tag:blogger.com,1999:blog-91046098224256714712024-03-25T22:43:17.158+05:30SuperNovaGopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.comBlogger36125tag:blogger.com,1999:blog-9104609822425671471.post-60786097703246166012014-01-13T23:53:00.000+05:302014-01-14T23:40:07.627+05:30Some interesting tidbits! <div dir="ltr" style="text-align: left;" trbidi="on">
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Although this a comparatively old presentation (around 2009), it provides a load of valuable information. Some information is dated and no longer applies. Many things in this presentation will already be known to people who are following the Indian Space Program closely over the last few years.<br />
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Well, the basic Mk II configuration seems to have changed a bit with the GS2 already containing 40 tons of propellant in both of its flights (D3 and D5). The MkIIA configuration will have payload fairing which will be 4m in diameter. The CUS with 15 tons of propellant is said generate 90kN of thrust against 75kN of the current engine (although it can be already throttled above 75kN but not to 90kN). <br />
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Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com8tag:blogger.com,1999:blog-9104609822425671471.post-77714810114335940772013-05-02T03:13:00.003+05:302013-05-02T03:29:16.699+05:30Martians! Here we come! <div class="separator" style="clear: both; text-align: center;">
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The Mars mission, India's first ever to a distant planet was announced by our Prime Minister Dr. Manmohan Singh during India's 66th Independence Day celebrations. This was to be a considerable challenge to our burgeoning space program considering the fact that even countries with established space programs such as the Russia Federation have found it difficult to achieve much success when it comes to the red planet. <br />
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But ISRO on the other hand has things going right for them on the deep space exploration side of the things. Buoyed by the success of Chandrayaan 1 and the impeding launch of Chandrayaan 2 missions to our moon, the scientists at ISRO are confident of achieving yet another feat with Mars mission. <br />
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The mission itself has always been short of details except for the occasional new reports saying that the orbiter is on schedule for a 2014 launch. Every piece of information that can be found on this mission is indeed valuable. There are certain titbits from mission that we would like to share. <br />
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<ul>
<li><strong>The Mars orbiter will be placed in an elliptical orbit of around 500 X 80,000 km around the red planet.</strong> It is much more difficult to put an orbiter into a circular orbit. A circular orbit requirement would require a significant increase in the fuel carried by the orbiter and hence its weight. It would also make the procedure of achieving the required orbit much more complex. The orbiter would first be inserted into an elliptical orbit. Then through a series of burns the apoapsis would need to be reduced to achieve a circular orbit. An elliptical orbit on the other hand reduces the complexity but doesn't make it any more easier to achieve. </li>
</ul>
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<ul>
<li><strong>The orbiter will be launch by the PSLV-XL</strong>, the same version which launched the Chandrayaan 1. ISRO understandably wants to go with the proven workhorse as opposed to the GSLV even if it means much stringent weight limitations of the orbiter. This might also be one of the reasons for choosing an elliptical orbit as a circular orbit means more fuel which in turn means more weight. The PSLV should be capable of sending a orbiter with ~200 kg of space for instruments to the Martian orbit. </li>
</ul>
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<ul>
<li><strong>The orbiter would need around 300 days to reach Mars and is supposed be launched during October-November 2013</strong>. The launch window is very important since missions to Mars can be launched when Earth and Mars are relatively close to each other. This window occurs only once every 26 months. So, miss this window and the mission will have to wait for another 2 years. </li>
</ul>
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<ul>
<li>The orbiter is supposed to carry very few instruments, considering the weight limitations and <strong>all the instruments are planned to be Indian</strong>. The goal of the mission to establish the capability to send orbiters to Mars, so if this mission is successful much bigger missions may follow. </li>
</ul>
There are a lot of challenges in this mission. Some more intimidating than others but all of which have to be overcome for success. Some of the significant challenges as mentioned by ISRO are<br />
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<ul>
<li>The spacecraft needs shielding from the radiation in the Van Allen belt and also the deep space radiation. The spacecraft will have a significant and prolonged exposure to radiation so it needs augmented radiation shielding. </li>
</ul>
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<ul>
<li>There is a communication delay of ~20 mins between Earth and Mars. This is due to enormous distance that varies between 55-385 million kms between the two bodies. Compare this with the 2 second communication delay between the Earth and the Moon which are separated by 384,000 kms.</li>
</ul>
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<ul>
<li>The propulsion system of the spacecraft needs to be robust and reliable. The spacecraft propulsion system will remain dormant for almost 300 days when the spacecraft is travelling from Earth to Mars. Then once it is close to Mars, the propulsion system has to work exactly as it should to insert the spacecraft into orbit around Mars.</li>
</ul>
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<ul>
<li>The most challenging phase is certainly inserting the spacecraft into orbit around Mars. The room for error in this phase is minimal and could result in the spacecraft being lost in the depths of space. This critical event will ensure whether the mission is a success.</li>
</ul>
ISRO has a daunting task ahead of it to ensure that this mission goes as planned given such a large number of variables involved. There are scientists who are working day and night to ensure just that. So, wishing success for ISRO with this challenging mission that is set to boost India's image in the world to new heights. <br />
<br />Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com1tag:blogger.com,1999:blog-9104609822425671471.post-42525556325011510042013-05-02T01:40:00.001+05:302013-05-02T01:40:32.457+05:30SuperNova is back SuperNova is pleased to inform everyone that we are back after a long hiatus. The blog would like to thank all its readers for the numerous positive feedbacks and the constant encouragement. That's the thing that keeps us up and running.<br />
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SuperNova hopes to keeps its readers constantly updated with the happenings within the Indian Space scene and much more. A report on the upcoming Mars mission will be the first step in that direction and the post should be up shortly. <br />
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Regards<br />
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Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com3tag:blogger.com,1999:blog-9104609822425671471.post-78779542344972175522011-12-03T00:33:00.001+05:302011-12-03T00:46:25.372+05:30US interest in Indian Human Spaceflight Program<div dir="ltr" style="text-align: left;" trbidi="on">
<a href="http://pib.nic.in/newsite/erelease.aspx?relid=77934">This</a> release from PIB caught attention, for it mentions:<br />
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<blockquote class="tr_bq">
<span id="content">The United states has also expressed interest to
collaborate with India on Human Space Flight as stated in the joint
statement of Indian Prime Minister and US President during November
2010. </span><br />
<span id="content"></span></blockquote>
We had previously heard from the media about Boeing offering to help with the Indian Human Spaceflight Program. That could have possibly involved India co-developing (or buying in harsher terms) a variant of the CST-100 that Boeing has been developing for the CCDev Program. But, there hasn't much news on willingness of NASA, the official government space entity, to support India in it's Human Spaceflight ambitions. This old bit news points to NASA's "interest" in assisting India although whether such an assistance would be in India's interest is a different question altogether.<br />
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<br /></div>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com2tag:blogger.com,1999:blog-9104609822425671471.post-20782174165527847882011-07-22T01:15:00.000+05:302011-07-22T01:15:32.107+05:30Updates on Chandrayaan-2 and GSLV<div dir="ltr" style="text-align: left;" trbidi="on">In a <a href="http://www.livemint.com/2011/07/08213841/K-Radhakrishnan--Flight-stage.html?h=B">recent interview to LiveMint</a>, the chairman of ISRO, Dr. K. Radhakrishnan was asked some question regarding the GSLV and the effects of it's two successive failures on the launch of Chandrayaan-2, planned for 2013.<br />
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<blockquote><b>Does it mean all major missions till Chandrayaan-2 will only use indigenous engines? Since the Russian engine has to be examined, will Chandrayaan-2 be delayed?</b> </blockquote><blockquote>Yes, it has to be tested on indigenous cryogenic engines, and we’ll only use our engines for future launches, but that is not why there will be a delay. Historically, the Chandrayaan missions are a joint Indo-Soviet mission. The agreement was that the lander [that will descend on the moon] and the (lunar) rover (a robot vehicle) would be provided by the Russians. We wanted to put a smaller rover; it’s something new that we are developing. However, in Russia there was a rethink. They decided they’ll only develop the lander and some instruments related to it. That means India would have to make a bigger rover, a decision taken almost a year ago. There are also preliminary design reviews to be undertaken this year to select which instruments are to be carried onboard the mission. So it’s not only GSLV (engines); there are other reasons for the delay.</blockquote><br />
On the GSLV,<br />
<blockquote><b>Next week you’re launching a satellite on the Polar Satellite Launch Vehicle (PSLV). When can we next expect a launch aboard a Geosynchronous Satellite Launch Vehicle (GSLV) with our own cryogenic engine, given that previous attempts have resulted in failure?</b></blockquote><br />
<blockquote><div class="dvbxImg">Next year this time, we will be conducting flight stage tests (a preliminary to the launch). Flight stage readiness is one thing, but before it is inducted into a launch, we have to ensure that all the ground tests are okay. <b>Also, when we launched the satellite in December, we used a very costly satellite (GSAT-5P)— almost <span class="rupee">R<span>s.</span></span> 150 crore—with lots of features. This time we’ll go for a cheaper satellite (GSAT-14), something that doesn’t require much effort. At best, we’ll be able to put in some transponders in the C-band. If the vehicle underperforms, it won’t be much of a loss.</b> If this one goes well, we will launch the GSAT-6, the “famous” one (that was embroiled in the Isro-Devas row). This, too, will go only on an indigenously developed cryogenic engine. After that it will be Chandrayaan-2 (scheduled for around 2013). There are also changes in the whole GSLV vehicle per se. From 1.5-tonne payloads, we’ve now reached about 2.2-tonne payloads. The biggest change effected is the size of the heat shield [a protective sheath that also determines the size of communication satellites to be put into orbit] and the materials we use for it. We’ve gone from 3.5m heat shields to 4m, and use composites [such as plastic fibre] instead of metal. For GSLV Mark-3, we may have to use 5m shields. </div></blockquote><blockquote><b>Why is developing a GSLV so difficult?</b> </blockquote><blockquote>We’ve bought seven cryogenic engines from Russia, of which we’ve used six. The results coming out of GSLV have been mixed. Sometimes unforeseen obstacles don’t emerge until it’s actually launched. For instance, when we tried to launch last April using (an) indigenous cryogenic engine, all the preliminary stages were fine and our cryogenic engine ignited—and ignition in vacuum is a difficult thing. But after a few seconds, it stopped. For it to keep going, another device called a two-steering engine (or turbo pumps, which keep the launcher steady) ought to ignite, too. This will ignite only if hydrogen and oxygen are present in exact amounts. When we looked into it, there are several possible explanations as to why the turbo pumps stopped: There are three bearings for these turbo pumps; the bearings must rotate without being (distorted) out of shape by the liquid hydrogen fuel it is submerged into. It could also be that the turbo pumps were blown out of shape. There are several things that can go wrong, and each time we have to test from scratch and develop new solutions. While all these have been looked into, we have to undertake a full ground test, before we can be sure that this will work in flight. Hopefully, this flight stage should be ready for testing in March 2012. </blockquote><blockquote><b>So what about the seventh cryogenic engine from Russia? There were reports that both Isro and Russia disagreed on technical reasons for the failure of the most recent GSLV mission in December.</b> </blockquote><blockquote>The last two engines (the sixth and seventh) have greater thrust than previous engines. They was supplied in 2004 and 2005, and stored in specified conditions. So the reason for the failure (in December) was the inadvertent snapping of the connectors, well before time [connectors are critical for controlling the vehicle]. This happened because the shroud gave away (the shroud is a casing that separates the liquid and solid stages of the launch cover). It’s a cover that sits on (the) bottom of the cryogenic stage. Now, why did the shroud go? Was it the 4m heat shield? We then realized that it was the inherent vulnerability of the shroud. The shroud was at the bottom of the cryogenic stage. There were 10 connectors in two stages, and both gave way. Initially, the Russians said it was our 4m shield that was responsible. We put both our analyses, and finally the Russians also came around. <b>We then decided that the seventh engine has to be inspected, too. We did it and found that they weren’t made in the dimensions specified to in the document. There are lots of shortcomings, and the Russians admitted it. Now, the point is that this has to be corrected before it can be used for launch and would require a detailed inspection by them.</b></blockquote>The delay in the launch of Chandrayaan-2, at the time thought to be because of the GSLV failures, was well documented during the weeks and months following the failure of the F06 flight. But, the additional task of having to develop the rover all by themselves is seemingly a bigger challenge for ISRO. For the record, ISRO does not have any prior experience in building rovers of any sort and different aspects like design, testing are going to take a lot of time (and assistance from the Russians). The rover design will supposedly be finalized this year. The mission itself could possibly be delayed upto 2015 and beyond while ISRO is optimistic about launching it in 2014.<br />
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Regarding the GSLV, Dr. Radhakrishnan clears the fact that all future flights of GSLV will use the indigenous upper stage (then the final Russian upper-stage will indeed go unused). The additional time and resources that will have to go into overcoming the short-comings of the Russian stage just for a single mission should have deterred ISRO from using it on any future flights. <br />
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The next launch of the GSLV will use a comparatively inexpensive satellite in the GSAT-14. ISRO wants to ensure that if this launch were to fail, then the loss wouldn't be as great as in the case of the previous launch (GSAT-5P). In case of a successful flight (one which we pray for), the GSLV will then launch the GSAT-6 and the GSAT-7.<br />
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</div>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com0tag:blogger.com,1999:blog-9104609822425671471.post-27553892638353420492011-07-17T00:03:00.006+05:302011-07-17T01:33:02.565+05:30PSLV notches up another success<div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEie_xa2zs2IUMKkBT_Z2CsNDVISRsV-llQObDGW_8FtP1oiu5M_QvTXLK1AgmGKBmGwcD19AkYnM0lrp5lcsMnFc68QdOgTfk9fvPIp0peCJ8MI0EsJhLSWl28WRm5SR7e0ctte_7TOf53i/s1600/pslvc17-6.jpg"><img style="display:block; margin:0px auto 10px; text-align:center;cursor:pointer; cursor:hand;width: 319px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEie_xa2zs2IUMKkBT_Z2CsNDVISRsV-llQObDGW_8FtP1oiu5M_QvTXLK1AgmGKBmGwcD19AkYnM0lrp5lcsMnFc68QdOgTfk9fvPIp0peCJ8MI0EsJhLSWl28WRm5SR7e0ctte_7TOf53i/s400/pslvc17-6.jpg" alt="" id="BLOGGER_PHOTO_ID_5630038371998610402" border="0" /></a> <span style="font-style: italic;">The launch of PSLV-C17</span> Credit:ISRO<br /></div><br /><span style="font-family: arial;font-family:arial;font-size:130%;" >The PSLV has added another success in it's list after than the successful launch of the GSAT-12A on-board the PSLV-C17. This was the PSLV's 19th flight and it's 15th consecutive successful launch. The satellite was launched into a sub geostationary transfer orbit.</span><span style="font-size:130%;"><br /><br /></span><span style="font-family: arial;font-family:arial;font-size:130%;" >The 53 hour countdown started at 11:48 hours (IST) on July 13, 2011. ISRO has been generous enough to provide us with videos of launch vehicle integration which happened during the months and weeks leading upto the launch.</span><br /><br /><span style="font-style: italic;"><br />The integration of Solid rocket boosters with first stage.</span> Credit:ISRO<br /><br /><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.blogger.com/video.g?token=AD6v5dx_3yrj0XtadNJ_cWSDb5jkiFV4W7QJB4tvsfbQLOGeAefg5fT57sNTxlw43lyPCjQTT6ZykTm4Y7c092im4g' class='b-hbp-video b-uploaded' frameborder='0'></iframe><br /><br /><span style="font-style: italic;"><br />Integration of the third and fourth stages.</span> Credit:ISRO<br /><br /><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.blogger.com/video.g?token=AD6v5dyFXtWnKF80ymFM5Ye3VBgh3T4ETkSd_Une0rwFo67T1Ff6KzouJphpN93bZSIG5yF00fge7pStHBpROhh0Gw' class='b-hbp-video b-uploaded' frameborder='0'></iframe><br /><br /><span style="font-style: italic;"><br />Integration of the satellite and heat shield.</span> Credit:ISRO<br /><br /><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.blogger.com/video.g?token=AD6v5dxZQOd0ZgohRN-FP6KIUguDOrGAAxGfZn94AjwFN8lIDpEa89CCS6BkTjR_siZMLy_Uy1uWvudY6HX0tO_NYw' class='b-hbp-video b-uploaded' frameborder='0'></iframe><br /><br /><span style="font-family:arial;font-size:130%;">The GSAT-12A itself is a communications satellite of the INSAT-family, a replacement for the INSAT-3B. It was launched to address the ever-growing demand for transponders. This particular satellite carries 12 C-band transponders.<br /><br />The launch window for this flight opened at 16:48 hours for 20 minutes. The weather was gloomy but there was no rain leading-up to the launch. The mission director gave the go-ahead for the launch at the scheduled launch time (16:48 hours IST). During the last 15 minutes, the onboard mission computer takes over the launch control. It is also important to mention that this particular flight was the first PSLV flight with the indigenous flight computer Vikram (which was previously used on the GSLV-D3 flight).<br /><br />Due to this being a launch to sub-GTO orbit, the normal flight profile of the PSLV was altered slightly to obtain the large apogee. The configuration used here was the PSLV-XL</span><span style="font-family: arial;font-family:arial;font-size:130%;" > </span><span style="font-family: arial;font-family:arial;font-size:130%;" name="advenueINTEXT" id="advenueINTEXT" >with 13.5 meter long strap on solid boosters that each carried nearly 12 tonnes of propellant instead of the standard version were they are 11.3 meters long and carry 9 tonnes of propellant. </span><span style="font-family: arial;font-family:arial;font-size:130%;" name="advenueINTEXT" id="advenueINTEXT" >At liftoff the vehicle stood 44 meters tall and weighed about 320 tonnes.</span><span style="font-family: arial;font-family:arial;font-size:130%;" ><br /><br />The altered fight profile meant that </span><span style="font-family: arial;font-family:arial;font-size:130%;" name="advenueINTEXT" id="advenueINTEXT" ><span name="advenueINTEXT" id="advenueINTEXT">the fourth stage coasted for 2 minutes 25 seconds before ignition and fired for about 9 minutes. After about 20 minutes of the flight, the satellite was inserted into a </span></span><span style="font-family:arial;font-size:130%;">sub-Geosynchronous Transfer Orbit (sub-GTO) with a perigee of 284 km and an apogee of 21,020 km with an orbital inclination of 17.9 deg. </span><span style="font-family: arial;font-family:arial;font-size:130%;" name="advenueINTEXT" id="advenueINTEXT" ><span name="advenueINTEXT" id="advenueINTEXT">This was almost equal to the planned </span></span><span style="font-family:arial;font-size:130%;">284 km perigee and 21,000 km apogee orbit.</span><span style="font-family: arial;font-family:arial;font-size:130%;" name="advenueINTEXT" id="advenueINTEXT" ><span name="advenueINTEXT" id="advenueINTEXT"> </span></span><span style="font-family: arial;font-family:arial;font-size:130%;" > </span><span style="font-family:arial;font-size:130%;"><br /><br />The satellite will be placed into Geostationary orbit by firing of it's onboard thrusters during the coming weeks.<br /><br />Flight Brochure: <a href="http://www.isro.org/pslv-c17/pdf/pslv-c17-brochure.pdf">Link</a><br />Image Gallery: <a href="http://www.isro.org/pslv-c17/Imagegallery/launchvehicle.aspx">Link</a><br /></span>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com5tag:blogger.com,1999:blog-9104609822425671471.post-56881747652630022742011-04-20T22:10:00.007+05:302011-04-25T00:08:12.620+05:30Shroud design to blame for GSLV failure ?<div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBVFQOdyOWZS8aAMtJnABwNE09UT6Qk5Fe4NdtTpbigpAsT3_djNzJwjI2WZAT2IX4TOhJcw87q26E3KjsR5PFyjY8QgoNwv54_kcJs5gKGX8cTi5MFcCa9dW1EaBfJ32x1ZCfpeW-p_Yx/s1600/Indigenous-cryogenic.jpg"><img style="display:block; margin:0px auto 10px; text-align:center;cursor:pointer; cursor:hand;width: 350px; height: 237px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBVFQOdyOWZS8aAMtJnABwNE09UT6Qk5Fe4NdtTpbigpAsT3_djNzJwjI2WZAT2IX4TOhJcw87q26E3KjsR5PFyjY8QgoNwv54_kcJs5gKGX8cTi5MFcCa9dW1EaBfJ32x1ZCfpeW-p_Yx/s400/Indigenous-cryogenic.jpg" alt="" id="BLOGGER_PHOTO_ID_5597713888699291058" border="0" /></a><span style="font-style:italic;"> A picture showing the cryogenic stage shroud (of the ICUS)</span><br /></div><br />First of all, congratulations to ISRO and the scientific community on the successful launch of PSLV-C16 carrying Resourcesat-2. ISRO has really put a lot of work into reviewing every aspect of the launch vehicles after the GSLV-F-06 failure. And the PSLV has again stood up to it's name as the the workhorse of ISRO.<br /><br />Coming to GSLV-F06 flight. The failure analysis team had previously identified the cause of the snapping of connectors. Deformation in the cryogenic stage shroud was to blame. So as to what caused the deformation of the shroud, there was a difference of opinion between the Russians, who built the stage and the shroud, and ISRO.<br /><br />The Russian side put the blame on the bigger payload fairing, which caused addition aerodynamic forces that led to excessive stress the shroud causing it to give way.<br /><br />According to ISRO, the cause for deformation was not the bigger payload fairing but a design flaw in shroud (blaming Khrunichev, the manufacturer of stage).<br /><br />This disagreement was causing the delay in the submission of the Failure Report. But, today's TOI has an article saying that the issue has been resolved. ISRO seems to have gone through with it's assessment on the cause for shroud deformation.<br /><br />Link to article: <a href="http://timesofindia.indiatimes.com/articleshow/8032380.cms">Design flaw behind GSLV crash</a><br /><br /><blockquote>"There is a need for correction in the design of the shroud. The shroud at the bottom of the cryogenic stage <span style="font-weight:bold;">did not fulfill all service conditions during the flight</span>, as a result of which the connectors linked to the shroud snapped. The connectors were linked to the shroud."<br /><br />"<span style="font-weight:bold;">The shroud was influenced by the pressure distribution that built up in the flight at around 46 seconds and was distorted.</span> It is the distortion of the shroud that led to pulling out of the connectors, which shouldn't have happened before the separation of the stage. But since it did, the vehicle (GSLV) lost altitude and control as a signal to the strap-ons from the computer did not come, owing to the snapping of the connectors," Nair explained.<br /><br />The space scientist said two key recommendations have been made for future course of action — either<span style="font-weight:bold;"> make the shroud stronger/tougher</span> or <span style="font-weight:bolhttp://www.blogger.com/img/blank.gifd;">do away with it altogether</span>. "<span style="font-weight:bold;">The second is a possibility which we need to work out. If that is possible, all other parameters of the GSLV are fine.</span> A successful flight of the GSLV is not an impossibility."</blockquote><br /><br />The Failure report has been submitted to the Department of Space and we can expect the full report to be out in a week's time.Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com4tag:blogger.com,1999:blog-9104609822425671471.post-40143408805996227082011-04-19T00:41:00.002+05:302011-04-19T00:54:42.128+05:30Indo-Russian Soyuz mission confirmed?A year ago the media was abuzz with talks of Indian astronauts going into space on the Russian Soyuz as a precursor to Indian manned mission. Both the sides confirmed that talks were on for collaborative mission. But, Russia later announced that they wouldn't able to accommodate Indian astronauts as there weren't any spare Soyuz and all that were there would be used to transport crew to the ISS. <br /><br />Surprisingly, today there was a report that Indian astronauts would go to space in a Soyuz in 2015. There is much interest in this news due to person the comment came from and that even Roscosmos had this bit of news on it's website for confirmation. <br /><br /><blockquote>An Indian cosmonaut will first go on a Russian space mission in 2015, prior to the Indian manned mission in 2017, Alexey M Mzareulov, deputy consul-general of the Russian Federation, announced. He made the announcement at the 50th anniversary celebrations of the first human space flight by Yuri Gagarin, organized by the Russian Centre for Science & Culture, which saw many American diplomats.</blockquote><br /><br />Link: <a href="http://www.federalspace.ru/main.php?id=2&nid=11677">India-Russia Space Mission May Occur in 2015</a><br /><br />It's important to note that Roscosmos still mentions "India-Russia Space Mission <span style="font-weight:bold;">May</span> Occur in 2015". So, everything hasn't been finalized yet. Either way the news tells that the plan is at least moving ahead.Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com2tag:blogger.com,1999:blog-9104609822425671471.post-23262170698595261302011-04-15T22:26:00.004+05:302011-04-15T23:08:48.772+05:30Annual Report 2009-10The ISRO Annual Report for the fiscal year 2010-2011 is out. To be frank, this years report is something of a disappointment since there is not much new information released. Some of the missing topics are the development of Semicryogenic engine and something more substantial on the progress of Human Spaceflight Program.<br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://www.isro.org/rep2011/images/PAD-E-VIEW-frame-3652-.jpg"><img style="display:block; margin:0px auto 10px; text-align:center;cursor:pointer; cursor:hand;width: 250px; height: 375px;" src="http://www.isro.org/rep2011/images/PAD-E-VIEW-frame-3652-.jpg" border="0" alt="" /></a> <br /><br />On the GSLV Mk-III front, we have some updates regarding the development of C25 stage. <br /><br /><blockquote>The development of cryogenic engine for GSLV Mk III is progressing well. The hot test of Integrated Turbo Pump (TP) with Gas Generator (GG) in bootstrap mode was conducted for 40 seconds on August 13, 2010. The bootstrap mode starting of CE20 turbo-pump system with stored gas start up system was carried out and safe ignition of gas generator demonstrated.<br /><br />Subsystem level development tests have been completed in most of the areas. The project has entered into the phase of stage level tests for propulsion modules and vehicle level tests like Ground Resonance Test (GRT). Based on the development status of various subsystems GSLV MkIII vehicle, the Project has worked out the plan for achieving the first experimental launch during 2012. </blockquote> <br /><br />The 2012 date would be very hard to keep considering the work still remaining. If everything goes according to schedule the C25 should be ready for stage-level tests only by the middle of next year. <br /><br />The SRE-2 seems to be delayed from the tone used in the Report. It will now be launched in 2011-12 but is shown in 2012-13 launch slot in the mission profile chart. <br /><br />The Human Spaceflight program section doesn't provide any new information. It does mention one worrying prospect.<br /><br /><blockquote>Project report on “Development of critical technologies for Human Spaceflight Project” is under the consideration of Government of India for approval.</blockquote><br /><br />The program has to approved as soon as possible for Indians to be launched into space this decade. <br /><br />With respect to the RLV-TD program, the first demonstration flight, HEX, which was supposed to take place last year will now take place no sooner than in 2012. The report mentions that the vehicle mass was changed and hence a corresponding change in mission design had to be done. <br /><br />These are the snippets from the Space Transportation area. I will try and post another two posts on Earth Observation Systems and Communication satellites or combine them into one single post.<br /><br />Link to the Report : <a href="http://www.isro.org/rep2011/index.htm">2010-11 Annual Report</a>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com2tag:blogger.com,1999:blog-9104609822425671471.post-10019702191126831032011-03-01T00:35:00.003+05:302011-03-01T00:49:30.159+05:30Indian perspective on Manned Space MissionsWhile we wait for the failure report of GSLV-F06 to be out in the coming month, I thought I would post this seminar by Mr. Harish, Deputy Project Director, Human Spaceflight Program, VSSC. This particular seminar was part of the Aero India-2011 seminars and is titled "Indian perspective on Manned Space Missions - Reasons & Necessary Technologies".<br /><br />The presentation itself covers information about the Human spaceflight Program, most of which is already known. But, there is one interesting slide in the presentation which reiterated the notion about the future of Indian Human Spaceflight Program beyond the GSLV, which was previously reported here.<br /><br /><span style="font-style: italic;"><span style="font-weight: bold;"> </span></span><span style="" id="topstuff"></span><span style="font-style: italic;"><span style="font-weight: bold;"></span></span> <br /><br /><iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/ImI9vm2QGgI" frameborder="0" allowfullscreen></iframe>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com0tag:blogger.com,1999:blog-9104609822425671471.post-79570968952642219542010-12-25T17:24:00.004+05:302010-12-25T18:01:34.855+05:30GSLV-F06 Launch FailureThe GSLV-F06 flight was unsuccessful following an explosion at around T+60 seconds. <br /><br /><object width="640" height="385"><param name="movie" value="http://www.youtube.com/v/jd8_0UDdpHc?fs=1&hl=en_US"><param name="allowFullScreen" value="true"><param name="allowscriptaccess" value="always"><embed src="http://www.youtube.com/v/jd8_0UDdpHc?fs=1&hl=en_US" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="640" height="385"></embed></object><br /><br />The S139 does have a very good record flying on both the PSLV and the GSLV, so it would come somewhat as a surprise if it did cause the failure. The strap-on boosters would be another suspect having previously failed on one of the GSLV flights.<br /><br />It would be too early to debate the exact cause until there some official response from ISRO into what caused the failure.Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com4tag:blogger.com,1999:blog-9104609822425671471.post-84386842520518769672010-10-26T20:06:00.003+05:302010-10-26T20:37:59.603+05:30RISAT-1 postponed to 2011<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://www.isro.org/rep2009/images/RISAT-Tile-.jpg"><img style="display: block; margin: 0px auto 10px; text-align: center; cursor: pointer; width: 300px; height: 223px;" src="http://www.isro.org/rep2009/images/RISAT-Tile-.jpg" alt="" border="0" /></a><br /><div style="text-align: center;"><span style="font-style: italic;">RISAT-1 Tile</span> Source:ISRO<br /><br /></div>The launch of India's first satellite with an indigenous Synthetic Aperture Radar(SAR), the RISAT-1, has been delayed further to next year. Delays in the fabrication of satellite led to prioritization of RISAT-2, which uses a SAR developed from the Israel Aerospace Industries, launched back in April 2009.<br /><br />The satellite is supposed to be launched in the first half of 2011 according to the Chairman of ISRO. The Director of the Space Applications Center had previously stated that the satellite would be launched in mid-2011 in <a href="http://www.grss-ieee.org/risat-1-a-fully-polarimetric-c-band-sar-mission-of-isro/">an article</a> for the IEEE-GRSS Newsletter. It would used for mapping and managing natural disasters, besides amplifying defence surveillance capabilities.<br /><br />Further technical parameters and information on the satellite can he found here.<br /><br /><a href="http://docs.google.com/viewer?a=v&q=cache:M4pX5qyvGvwJ:www.scanex.ru/en/publications/pdf/publication50.pdf+risat-1+delays&hl=en&gl=in&pid=bl&srcid=ADGEESh7WO-Okn13ubF1XbWtyVYdyvIHfafL__nxP9bzEB3GwAG1Sb1xniARpbs5vHIp4aF7K68Qu0w9MTTMWtU-Xd6vNDXfmEoobnX5y6si9_hc9jvrkydMmWSKAvTm-ggVksPH9h-6&sig=AHIEtbRAbbXfTQ8bcsXyQ8CxZKON5iJJ6A">RISAT-1</a>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com0tag:blogger.com,1999:blog-9104609822425671471.post-1610902290295501582010-08-27T00:39:00.002+05:302010-08-27T00:44:39.151+05:30India To Launch GSAT-5P In OctoberAn update on the status of GSLV-F06 from <a href="http://www.aviationnow.com/aw/generic/story_channel.jsp?channel=space&id=news/asd/2010/08/25/11.xml&headline=India%20To%20Launch%20GSAT-5P%20In%20October">Aviationweek</a>:<br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://www.aviationnow.com/media/images/india_report/gsat5p.jpg"><img style="display: block; margin: 0px auto 10px; text-align: center; cursor: pointer; width: 246px; height: 150px;" src="http://www.aviationnow.com/media/images/india_report/gsat5p.jpg" alt="" border="0" /></a><br /><span style="font-style: italic;">BENGALURU, India — The Indian Space Research Organization (ISRO) is gearing up to launch the 2,000-kg. GSAT-5P communication satellite in October using a Geostationary Satellite Launch Vehicle (GSLV), an ISRO official tells AVIATION WEEK. </span><p style="font-style: italic;">“Configured as an exclusive C-band communication satellite, GSAT-5P will carry 12 normal C-band transponders and six extended C-band transponders with wider coverage in uplink and downlink over Asia, Africa and Eastern Europe as well as zonal coverage,” the official says. “The spacecraft has a mission life of 12 years and [is] planned to be launched onboard GSLV-F06.”</p> <p style="font-style: italic;">The satellite is expected to expand existing telecommunication and television bandwidth. A Russian cryogenic engine will be powering the GSLV-F06; ISRO plans to launch a GSLV with an Indian-made cryogenic engine within a year. Meanwhile, former ISRO chief Madhavan Nair said in Bengaluru Aug. 22 that through combined efforts, India might launch a manned mission to the Moon by 2021.</p> <p style="font-style: italic;">“There are a lot of mysteries and hypotheses on the origin of the Moon, and probing into these could possibly throw light on the origin of the Earth, Solar System and even the universe,” he says. “Helium-3, emitted from the Sun and found on the Moon, could end the fossil fuel crisis in the future, though we need to do lot of explorations in this field.”</p>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com0tag:blogger.com,1999:blog-9104609822425671471.post-17882968356632871182010-08-09T22:43:00.002+05:302010-08-09T22:50:52.592+05:30Indian Delegation in Russia<object width="480" height="385"><param name="movie" value="http://www.youtube.com/v/rL4TnVnMcEY&hl=en_US&fs=1"><param name="allowFullScreen" value="true"><param name="allowscriptaccess" value="always"><embed src="http://www.youtube.com/v/rL4TnVnMcEY&hl=en_US&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="480" height="385"></embed></object><br /><br />Signing of <span id="result_box" class="long_text"><span style="" title="">an agreement on cooperation in space exploration between chairman of ISRO, Dr. K Radhakrishnan and head of ROSCOSMOS, </span></span><span id="result_box" class="long_text"><span style="" title="">Antony </span><span style="" title="">Perminov on August 4th in Moscow.<br /><br /><br /></span></span>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com0tag:blogger.com,1999:blog-9104609822425671471.post-15998793379748752692010-07-09T17:34:00.004+05:302010-07-09T17:39:45.632+05:30GSLV-D3 Failure Analysis ReportThe GSLV-D3 <a href="http://www.isro.org/pressrelease/scripts/pressreleasein.aspx?Jul09_2010">Failure Analysis Report</a> is out. Posting the report in full:<br /><br /><table align="center" border="0" cellpadding="0" cellspacing="0" width="750" height="237"><tbody><tr style="font-style: italic;"><td style="text-align: left;" valign="top" height="84"><div class="text1b" align="justify"> <p>The third developmental flight of Geosynchronous Satellite Launch Vehicle (GSLV-D3) conducted on April 15, 2010 from Satish Dhawan Space Centre SHAR, Sriharikota, primarily for the flight testing of indigenously developed Cryogenic Upper Stage (CUS), could not accomplish the mission objectives. Consequently, ISRO had instituted a two-tier process to carry out an in-depth analysis of the flight performance, identify the causes of failure and recommend corrective measures.</p><p>The Failure Analysis Committee comprising multi-disciplinary experts completed the analysis and its findings were further reviewed by a National Group of Eminent Experts. These reviews have brought out that: </p><ol><li>Following a smooth countdown, the lift-off took place at 1627 hrs (IST) as planned. All four liquid strap-on stages (L40), solid core stage (S139), liquid second stage (GS2) functioned normally.<br /><br /></li><li>The vehicle performance was normal up to the burn-out of GS-2, that is, 293 seconds from lift-off. Altitude, velocity, flight path angle and acceleration profile closely followed the pre-flight predictions. All onboard real time decision-based events were as expected and as per pre-flight simulations.<br /><br /></li><li>The navigation, guidance and control systems using indigenous onboard computer Vikram 1601 as well as the advanced telemetry system functioned flawlessly. The composite payload fairing of 4 metre diameter inducted first time in this flight, also performed as expected. Performance of all other systems like engine gimbal control systems and stage auxiliary systems was normal.<br /><br /></li><li>The initial conditions required for the start of the indigenous Cryogenic Upper Stage (CUS) were attained as expected and the CUS start sequence got initiated as planned at 294.06 seconds from lift-off.<br /><br /></li><li>Ignition of the CUS Main Engine and two Steering Engines have been confirmed as normal, as observed from the vehicle acceleration and different parameters of CUS measured during the flight. Vehicle acceleration was comparable with that of earlier GSLV flights up to 2.2 seconds from start of CUS. However, the thrust build up did not progress as expected due to non-availability of liquid hydrogen (LH2) supply to the thrust chamber of the Main Engine.<br /><br /></li><li>The above failure is attributed to the anomalous stopping of Fuel Booster Turbo Pump (FBTP). The start-up of FBTP was normal. It reached a maximum speed of 34,800 rpm and continued to function as predicted after the start of CUS. However, the speed of FBTP started dipping after 0.9 seconds and it stopped within the next 0.6 seconds.<br /><br /></li><li>Two plausible scenarios have been identified for the failure of FBTP, namely, (a) gripping at one of the seal location and seizure of rotor and (b) rupture of turbine casing caused probably due to excessive pressure rise and thermal stresses. A series of confirmatory ground tests are planned.<br /><br /></li></ol> <p>After incorporating necessary corrective measures, the flight testing of Indigenous Cryogenic Upper Stage on GSLV is targeted within a year. </p> <p>In the meantime, the next two GSLVs would fly with the available Russian Cryogenic Stages.</p> </div> </td> </tr> <tr> <td valign="top" height="10"><br /></td></tr></tbody></table>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com0tag:blogger.com,1999:blog-9104609822425671471.post-61853150041876831132010-07-08T21:39:00.004+05:302010-07-08T22:33:07.424+05:30PICTURES: Indian Space Transportation System - Present Scenario and Future Directions<embed type="application/x-shockwave-flash" src="http://picasaweb.google.com/s/c/bin/slideshow.swf" flashvars="host=picasaweb.google.com&hl=en_US&feat=flashalbum&RGB=0x000000&feed=http%3A%2F%2Fpicasaweb.google.com%2Fdata%2Ffeed%2Fapi%2Fuser%2Fcrgkc.r%2Falbumid%2F5491569930285357681%3Falt%3Drss%26kind%3Dphoto%26hl%3Den_US" pluginspage="http://www.macromedia.com/go/getflashplayer" width="400" height="267"></embed><br /><div style="text-align: center;"><span style="font-style: italic;">The presentation titled 'Indian Space Transportation System - Present Scenarion and Future Directions' presented by Dr. B.N.Suresh on 19th June, 2009 at TIFR, Mumbai. Credit:ISRO Click on the slideshow for larger images.</span><br /></div><br />Important Observations:<br /><ul><li>Slide 20 gives us an idea of the Indian interplanetary missions on the drawing board. The slide also gives the orbital and fly-by payload capacities of PSLV, GSLV and GSLV -Mk III to Mars, Venus and Asteroid (very vague definition in this case) respectively. The approximate date for robotic missions to Venus and asteroids is mentioned in Slide 34 as 2018 (Interplanetary missions beyond Mars). The Martian mission according to ISRO will take place only after 2015.</li><li>Slide 20 mentions the performance specifications of GSLV-Mk III i.e 4.5 tons to GTO and 10 tons to 400 km LEO. In addition it clearly specifies the growth potential to as 5 to 6 tons to GTO, a previously speculated figure. Slide 14 illustrates the flight sequence of Mk III.<br /></li><li> Slide 25-Slide 28 gives some information of the RLV program. Slide 25 is the image of RLV-TD. Slide 26 shows the RLV with an air-breathing engine. Slides 27 and 28 shows the configuration and flight profile of an RLV-TSTO (Two Stage to Orbit) version.</li><li>Slides 29-33 has information regarding the Indian Human Spaceflight Programme. The slides give information about the crew vehicle and the human-rated GSLV that would launch it and the mission profile. Slide 33 has already been discussed in detail in an earlier post.<br /></li></ul>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com2tag:blogger.com,1999:blog-9104609822425671471.post-44370948626009450702010-07-04T21:18:00.007+05:302010-07-04T22:30:22.805+05:30ISRO Heavy Lift Vehicle<div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbea3eY03pUeUQBbb0f3Q7F4g45KsF8wFS8Ge07Z9xHLszulw0nl65OQbzSNurw7dyXDoKZktOlHKls2jTNsqtbDmETSUKbCHYt-HOyMHEzuUJl9r2fs13GCvV-Qm7q6jZ1W67RH3kzwbb/s1600/Slide33.JPG"><img style="display: block; margin: 0px auto 10px; text-align: center; cursor: pointer; width: 320px; height: 240px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbea3eY03pUeUQBbb0f3Q7F4g45KsF8wFS8Ge07Z9xHLszulw0nl65OQbzSNurw7dyXDoKZktOlHKls2jTNsqtbDmETSUKbCHYt-HOyMHEzuUJl9r2fs13GCvV-Qm7q6jZ1W67RH3kzwbb/s320/Slide33.JPG" alt="" id="BLOGGER_PHOTO_ID_5490078863292985634" border="0" /></a><span style="font-style: italic;">A slide for Dr. B N Suresh's presentation titled '</span><span style="font-weight: bold; font-style: italic;">Indian Space Transportation System: Present Scenario and Future Directions</span><span style="font-style: italic;">' at TIFR-Mumbai, 19th June 2009 </span><span style="font-weight: bold; font-style: italic;">Credit:ISRO</span><br /></div><br />In an <a href="http://indianspaceweb.blogspot.com/2010/02/indian-lunar-rockets.html">earlier post</a> Super Nova had reported on the preliminary concept of an Indian Lunar manned mission presented at IAC-2009. That concept envisaged the development of a crew launch vehicle and a Cargo Launch Vehicle with payload capabilities of 31 and 84 tons respectively to Low Earth Orbit.<br /><br />The above image shows another concept Heavy Lift Vehicle (HLV) which would be able to haul 100 tons to LEO. What is interesting in this architecture is that no solid stages would be used on the vehicle. 4 SC460 Semi-cryogenic boosters with the SC800 first stage would generate the lift-off thrust for the vehicle. The C100 upper stage would probably serve as an Earth Departure stage (EDS) .<br /><br />In addition to the HLV, the presentation slide also gives us an idea of the role that the GSLV-Mk III would play in lead up to Lunar manned mission and more importantly in the Indian Human Spaceflight Program.<br /><br />As we know the present Human Spaceflight concept envisages the development of a crew capsule (Orbital Vehicle) which would be launched by the GSLV-Mk II. This capsule would probably not feature any docking system due to restriction in the payload capacity of GSLV-Mk II (around 5 tons).<br /><br />Given the greater capability of Mk-III, ISRO plans to use the vehicle to launch a bigger, better equipped crew capsule which would be use to demonstrate rendezvous and docking in addition Extra Vehicular Activity (EVA).Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com38tag:blogger.com,1999:blog-9104609822425671471.post-86391707489482381062010-05-11T22:09:00.007+05:302010-05-11T23:17:06.430+05:30PSLV variants<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGrsrZvuwoUqbIyNCqH2etObTwAYtFlrgTUMnUzRpy-stceKoxEQyFSCUofhRTLGfVyaxE3t43TI-_9feNpTmEFM8oV1P3eZ8Dxt_MakiI_o5sUSiaKBr8erjhGMHxF7Y-u9sWMhKNtYnK/s1600/PSLV+variants.jpg"><img style="display: block; margin: 0px auto 10px; text-align: center; cursor: pointer; width: 320px; height: 193px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGrsrZvuwoUqbIyNCqH2etObTwAYtFlrgTUMnUzRpy-stceKoxEQyFSCUofhRTLGfVyaxE3t43TI-_9feNpTmEFM8oV1P3eZ8Dxt_MakiI_o5sUSiaKBr8erjhGMHxF7Y-u9sWMhKNtYnK/s320/PSLV+variants.jpg" alt="" id="BLOGGER_PHOTO_ID_5470053693250642402" border="0" /></a><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhtxb6SEhkFk8_3zGj7EQR4b32Hw5jahpFhbrMJFTgyflg0XiY2S_Jpq139PoZgiG5Xw5lL8MA4zwdeHtXru9a2A0jdWTbUv_OVew_lg4kraaghfeMJN0Sixj31OddG0QDfYM3hH2BdQcnY/s1600/PSLV+variants1.jpg"><img style="display: block; margin: 0px auto 10px; text-align: center; cursor: pointer; width: 320px; height: 207px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhtxb6SEhkFk8_3zGj7EQR4b32Hw5jahpFhbrMJFTgyflg0XiY2S_Jpq139PoZgiG5Xw5lL8MA4zwdeHtXru9a2A0jdWTbUv_OVew_lg4kraaghfeMJN0Sixj31OddG0QDfYM3hH2BdQcnY/s320/PSLV+variants1.jpg" alt="" id="BLOGGER_PHOTO_ID_5470053938982699778" border="0" /></a> Extract from <span style="font-style: italic;">Evolution of Indian launch vehicle technologies</span> published in CURRENT SCIENCE, VOL. 93, NO. 12, 25 DECEMBER 2007<br /></div><br />PSLV was designed in 1980s for inserting 1 ton class of operational remote sensing satellites into Sun synchronous orbit. It was truly a quantum leap for Indian space technology at that time as a follow-on project of the ASLV. PSLV today is among the few launchers with a very high success rates and serves as the work-horse of ISRO.<br /><br />Different configurations are designed to provide wide variations in payload capabilities ranging from 600 kg in LEO to 1900 kg in SSPO. Core-alone configuration without strap-on motors is designed to launch two satellites of 400 kg each into LEO. A three-stage configuration without strap-on motors and liquid stage will offer lower launch cost of 500 kg class of satellites into LEO.<br /><br />The most interesting of these variants are the PSLV-HP and PSLV-3S, the most capable and least capable members of the PSLV family if built. The PSLV-HP is supposed to have a a capability of 1900 kg to SSPO. It was designed to launch the IRNSS constellation into orbit but there are doubts over the program following the revelation by ISRO that it was looking into the possibility of GSLV launching the IRNSS. The 3S variant without the PSLV second stage is designed to launch 500 kg payload into a 550 km LEO.Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com4tag:blogger.com,1999:blog-9104609822425671471.post-68360672787812321202010-04-15T19:51:00.005+05:302010-04-15T21:06:57.840+05:30Launch Report: D3 flight Unsuccessful<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjTCJl_GBuYWoUwxfW55zc6JSNoZlZkVr2MT0jQ4uLqCHw2JA5Qk-8yEPxzxArDH28DSCKfeaIQCWTar8Iw36QUG_hoQmHXmtWQCh0ZxZUP7MtEGspz3CNw3EQsp4wka6KBXXDSSp-LraAT/s1600/fia.jpg"><img style="display: block; margin: 0px auto 10px; text-align: center; cursor: pointer; width: 320px; height: 274px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjTCJl_GBuYWoUwxfW55zc6JSNoZlZkVr2MT0jQ4uLqCHw2JA5Qk-8yEPxzxArDH28DSCKfeaIQCWTar8Iw36QUG_hoQmHXmtWQCh0ZxZUP7MtEGspz3CNw3EQsp4wka6KBXXDSSp-LraAT/s320/fia.jpg" alt="" id="BLOGGER_PHOTO_ID_5460379331599379346" border="0" /></a><br /><br />The GSLV-D3 flight that lifted-off from SDSC at 16:47 IST was unsuccessful. This led the vehicle to lose altitude and splash down into the Bay of Bengal. The exact reason for the failure is ascertained but the ISRO Chairman, Dr. K Radhakrishnan told the press that the problem could have with vernier engines of the upper stage.<br /><br />The vehicle lifted-off at 16:47 IST and from here there are numerous reports of the vehicle terminating data transmission just after 505 seconds. The flight is said to have progressed normally upto the planned shut-down of S2 (2nd Stage) 293 seconds. Normally the S2 stage shut-downs at T +310 seconds at an altitude of 120 km and is jettisoned 4 seconds later at an altitude of 127 km. This is also when the cryogenic engine ignition takes place. But the parameters of the vehicle is said to have veered-out after T +293 seconds following a failure of the 2 vernier engines used to control the vehicle.<br /><br />The vehicle is said to have got a velocity of 4.9 km per second as planned and the cryogenic stage ignition command was issued as planned by the on board computer. The terminal velocity (ie at the end third stage shut-down) of the GSLV is 10.2 km/sec at an altitude of 195 km.<br /><br />The Chairman of ISRO told the press that, ”Indications are that the cryogenic engine got ignited”. But the vehicle started tumbling, due to loss of control, lost altitude and finally splashed down into the sea. This could have been caused by the ignition failure of the two vernier engines. These small thrusters are used for altitude control and adjustments in velocity.<br /><br />The flight was the maiden one for the new Chairman of ISRO. The Chairman indicated at failure of vernier engines but he said that detailed analysis of the flight data is being carried out to find out the exact reasons for the failure and that corrective measures would be taken for the next test flight, scheduled to take place within a year.<br /><br /><a href="http://www.isro.org/pressrelease/scripts/pressreleasein.aspx?Apr15_2010">Here</a> is ISRO's official press release on the flight.Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com2tag:blogger.com,1999:blog-9104609822425671471.post-32455188559780186682010-04-13T23:28:00.005+05:302010-04-13T23:54:10.233+05:30PICTURES: GSLV-D3 and GSAT-4<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjhdUzwyVuuUbwBUEaKWIQOWul-_WiJNTsPubN-qLURW2A9snRRPEUPVmYKedNzBp51R_SitbRVh1MDNNjFjQ9sNxu9008aU4D4mS7oGyhj11idhw4pa9jvIWDyHJBlqQFEmY0jDnU6O4GQ/s1600/D3.jpg"><img style="display: block; margin: 0px auto 10px; text-align: center; cursor: pointer; width: 222px; height: 320px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjhdUzwyVuuUbwBUEaKWIQOWul-_WiJNTsPubN-qLURW2A9snRRPEUPVmYKedNzBp51R_SitbRVh1MDNNjFjQ9sNxu9008aU4D4mS7oGyhj11idhw4pa9jvIWDyHJBlqQFEmY0jDnU6O4GQ/s320/D3.jpg" alt="" id="BLOGGER_PHOTO_ID_5459688096078878642" border="0" /></a><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi43mvQ8DRiGoR3g0xYfsWdOxccfcs4d7bfRt94812JV9V7Bz0n7Euv98vph1ENUmCxAin_WIACz7wFgHeTtk8aNXIM7nkeU4WyRHil6h6OqhkjKUBhuE5S8sMipMKfBvN-L9nyzJI43uTT/s1600/L55.jpg"><img style="display: block; margin: 0px auto 10px; text-align: center; cursor: pointer; width: 208px; height: 320px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi43mvQ8DRiGoR3g0xYfsWdOxccfcs4d7bfRt94812JV9V7Bz0n7Euv98vph1ENUmCxAin_WIACz7wFgHeTtk8aNXIM7nkeU4WyRHil6h6OqhkjKUBhuE5S8sMipMKfBvN-L9nyzJI43uTT/s320/L55.jpg" alt="" id="BLOGGER_PHOTO_ID_5459688313260563938" border="0" /></a><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjYS9uIIuzcOJnKzeakCUalwG1HQR9LPB4jAbMCTUtREaXgcrMcFUNz5TQWE676k1PqwbtGRsYja46FPXjCTuFhIV6006pH-DtSXpVJYPC-qVm_BIXf_yd99CQNGLALkrLwj3ySha4X3EC/s1600/CUS.jpg"><img style="display: block; margin: 0px auto 10px; text-align: center; cursor: pointer; width: 320px; height: 228px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjYS9uIIuzcOJnKzeakCUalwG1HQR9LPB4jAbMCTUtREaXgcrMcFUNz5TQWE676k1PqwbtGRsYja46FPXjCTuFhIV6006pH-DtSXpVJYPC-qVm_BIXf_yd99CQNGLALkrLwj3ySha4X3EC/s320/CUS.jpg" alt="" id="BLOGGER_PHOTO_ID_5459688654413661410" border="0" /></a><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi_69zj7VYIN7zRIN8nYUsPtONdFzAAfu8l8JjIuEnXLrtrd7rUcn1vfdocyXbm-XssDypdholhP0MnuGHvN1uZkLYxAa3N1XeCH0viT2yS2nZdheyGUWXsqVhXfp9yGAuB_mT4_hN9XH7J/s1600/gsat4.jpg"><img style="display: block; margin: 0px auto 10px; text-align: center; cursor: pointer; width: 320px; height: 226px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi_69zj7VYIN7zRIN8nYUsPtONdFzAAfu8l8JjIuEnXLrtrd7rUcn1vfdocyXbm-XssDypdholhP0MnuGHvN1uZkLYxAa3N1XeCH0viT2yS2nZdheyGUWXsqVhXfp9yGAuB_mT4_hN9XH7J/s320/gsat4.jpg" alt="" id="BLOGGER_PHOTO_ID_5459689075513679938" border="0" /></a><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIsHW02n2fWx5mT-joU3_28-RmZNaNybHVRE1xXrjPIzgaPmopSKWG58MX6SeXnwOl-eDEJV_nza7RWFv_pIBNxx7i_xQYUgIfg64uxAXOeV1e7dxOYnH7-CoSi5VBfQxiV5-PTAf5tar0/s1600/gion.jpg"><img style="display: block; margin: 0px auto 10px; text-align: center; cursor: pointer; width: 320px; height: 240px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIsHW02n2fWx5mT-joU3_28-RmZNaNybHVRE1xXrjPIzgaPmopSKWG58MX6SeXnwOl-eDEJV_nza7RWFv_pIBNxx7i_xQYUgIfg64uxAXOeV1e7dxOYnH7-CoSi5VBfQxiV5-PTAf5tar0/s320/gion.jpg" alt="" id="BLOGGER_PHOTO_ID_5459689364593119410" border="0" /></a>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com5tag:blogger.com,1999:blog-9104609822425671471.post-29420153504921460482010-03-06T18:05:00.007+05:302010-03-10T21:18:26.063+05:30L110 static firing stopped prematurelyISRO has conducted the static firing of the L110 stage on March 2, 2010. The firing was stopped 150 seconds following a deviation in one of the parameters. Posting the press release in full -<br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkSHZt-eXUW172eOQtmCqRy_2tMF5j1TZtacwLSedJhpyH78Lfa2t2vlwK0knLntDVfOTwTjDRtXX8Ox8wpnt4T_LmPwq82BNMVBhIG_CcurbO3Dw3WqRdAIWl6FRreysmZXIIp5IgHwVc/s1600-h/L1101.jpeg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 266px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkSHZt-eXUW172eOQtmCqRy_2tMF5j1TZtacwLSedJhpyH78Lfa2t2vlwK0knLntDVfOTwTjDRtXX8Ox8wpnt4T_LmPwq82BNMVBhIG_CcurbO3Dw3WqRdAIWl6FRreysmZXIIp5IgHwVc/s400/L1101.jpeg" alt="" id="BLOGGER_PHOTO_ID_5445499985781610066" border="0" /></a><br /><span style="font-style: italic;">Indian Space Research Organisation conducted the static test of its liquid core stage (L110) of GSLV Mk III launch vehicle, for 150 seconds at its Liquid Propulsion Systems Centre (LPSC) test facility at Mahendragiri at 16:00 hrs yesterday (March 5, 2010).<br /></span><span style="font-style: italic;"><br /></span><span style="font-style: italic;">While the test was originally targeted for 200 seconds it was stopped at 150 seconds since a deviation in one of the parameters was observed. About 500 important parameters were monitored during the static test. The next static test for 200 seconds will be conducted after analysis of this data.</span><br /><p style="font-style: italic;" class="text1b" align="justify">GSLV Mk III launch vehicle is being developed for launching 4 tonne class of satellites in Geo-synchronous Transfer Orbit (GTO). Measuring 17 meters in length and 4 meters in diameter, L110 is an earth storable liquid propellant stage with propellant loading of 110 tonnes. L110 stage uses two high-pressure Vikas engines in a clustered configuration and draws its heritage from the second stage of PSLV and GSLV and strapons of GSLV.<br /></p><p style="font-style: italic;" class="text1b" align="justify">While in PSLV and GSLV, the liquid stage with single engine configuration burns for 150 seconds, the GSLV-MkIII requires burning for 200 seconds in a twin engine configuration.</p><p style="font-style: italic;" class="text1b" align="justify"><br /></p><p style="font-style: italic;" class="text1b" align="justify"><br /></p><p style="font-style: italic;" class="text1b" align="justify"><br /></p>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com2tag:blogger.com,1999:blog-9104609822425671471.post-42199516134367262592010-02-25T20:10:00.010+05:302010-02-27T18:56:38.854+05:30Indian Moon Rockets: First Look<div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjC-q_X1ROu-x_tC7A-RD5bhZys8Jc6hBnCkTIHL0idkYr-ciAOqeoMUobfZvhba74Ee2dROUimO8UTR_r8QE11mXLakf6GdcI3EnHFjRGRtcK2miAf0V279p4Opbt9k4mCeJdDl7HQbZRV/s1600-h/ISROL+ppt.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjC-q_X1ROu-x_tC7A-RD5bhZys8Jc6hBnCkTIHL0idkYr-ciAOqeoMUobfZvhba74Ee2dROUimO8UTR_r8QE11mXLakf6GdcI3EnHFjRGRtcK2miAf0V279p4Opbt9k4mCeJdDl7HQbZRV/s400/ISROL+ppt.jpg" alt="" id="BLOGGER_PHOTO_ID_5442191472551655346" border="0" /></a><span style="font-style: italic;">The Preliminary Lunar Manned Mission Concept (Right) showing the launch vehicle architecture.</span> Credit: ISRO<br /></div><br />Back in December, Supernova posted the presentation by ISRO at the IAC 2009. A very less known and highly ambitious part of that presentation was the preliminary concept of an Indian Lunar manned mission. The concept in itself is not very detailed but gives us an insight into what ISRO has in store for the future. More importantly, the concept showcases the future UMLV family (Unified Modular Launch Vehicle) being used to loft the crew vehicle. This is the first time that we have had any insight into the possible architecture of the UMLV family, which will be powered by a Common Liquid Core stage in development.<br /><br />The first thing that strikes when we look at the preliminary lunar concept are the 2 majestic launch vehicles. These launch vehicles, especially the one that launches the Earth Departure Stage (EDS), is a world beyond the capabilities that India possesses today.<br /><br />ISRO plans to use two rockets for the manned lunar mission. The first will be a crew launch vehicle with the capability to launch 31 tons to Low Earth orbit. This vehicle with a liftoff weight of 1690 tons, would launch the crew module and the service module.<br /><br />The second rocket will launch the Earth Departing Stage and the Lunar Descent module. This launch vehicle would be a true Super-heavy lifter with a capability to launch 84 tons into Low Earth orbit. The liftoff weight of this beast would 3075 tons.<br /><br />ISRO has also given some of the technical details about the launch vehicles. The basis for these launch vehicles (as that of the UMLV family) is the new 2ooo kN Semi-cryogenic engine in development. The architecture of the two vehicles would be :<br /><br /><span style="font-weight: bold;">Crew Launch Vehicle</span><br />* Architecture - 4 S230 + SC500 + C60<br />* Capability - 31 tons to Low Earth Orbit<br />* Payload - Crew Module (6 tons) + Service Module (25 tons)<br /><br /><span style="font-weight: bold;">Carge Launch Vehicle</span><br />* Architecture - 8 S230 + SC800 + C60<br />* Capability - 84 tons to Low Earth Orbit<br />* Payload - Earth Departure Stage (67 tons) + Lunar Descent Module (17 tons)<br /><br />The S230 would be solid boosters with 230 tons of propellants, future descendants of the S200 booster developed for the GSLV-Mk III. The SC500 and SC800 stages would be powered by the Semi-cryogenic engine and containing 500 and 800 tons of propellant respectively. The C60 would be the bleeder expander cycle upper cryogenic stage containing 60 tons of propellant.<br /><br />The modular architecture of the launch vehicles and that of the whole UMLV family would help in reducing the cost of the rockets. The lunar architecture itself seems to be loosely based on the Constellation Program (which is supposed to be axed this year) architecture.<br /><br />ISRO is pressing ahead with it's preliminary research on Lunar manned mission irrespective of prospective financial issues of such a high budget mission although the the program itself in full isn't expected to be started anytime before 2020.<br /><br />Will be back with some analysis on the other part of mission ie beyond the launch vehicles.Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com8tag:blogger.com,1999:blog-9104609822425671471.post-91153593231292402802010-02-01T22:19:00.010+05:302010-02-25T21:07:31.881+05:30Chandrayaan-2 Program updates<div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9bF7KChNn0Qh9qvzEeDwZnQvlGp7uax0-Y-jIhwRR9HUxaFsGGBmkq_cGTVN2hxE4QhozZRIJJAJL-8wklzIt8UTMKxHCQk26MEscr-jq-GrAWgxdspNXLwrxogQJQ0sodbEwDL8XPryf/s1600-h/chand22.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px; height: 267px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9bF7KChNn0Qh9qvzEeDwZnQvlGp7uax0-Y-jIhwRR9HUxaFsGGBmkq_cGTVN2hxE4QhozZRIJJAJL-8wklzIt8UTMKxHCQk26MEscr-jq-GrAWgxdspNXLwrxogQJQ0sodbEwDL8XPryf/s400/chand22.jpg" alt="" id="BLOGGER_PHOTO_ID_5434445054769701474" border="0" /></a><span style="font-style: italic;">Soft-landing scenario on lunar surface. Copyright: ISRO</span><br /></div><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirLkMNdZf8Kvr-DcK9cJbKl9OFs5yd4Egt8jvsSj3zl2WsKf9DnakSvXCG8bQ-GSVYUE9jeEqm5QCz2XRv25fj4TwMsjzvG5rywCHJs5HXQ1ODRzCeyKjOzV7_b_-FnDHSEsdLMBDK_8PO/s1600-h/chand31+copy.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px; height: 286px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirLkMNdZf8Kvr-DcK9cJbKl9OFs5yd4Egt8jvsSj3zl2WsKf9DnakSvXCG8bQ-GSVYUE9jeEqm5QCz2XRv25fj4TwMsjzvG5rywCHJs5HXQ1ODRzCeyKjOzV7_b_-FnDHSEsdLMBDK_8PO/s400/chand31+copy.jpg" alt="" id="BLOGGER_PHOTO_ID_5434445390038481698" border="0" /></a><span style="font-style: italic;">Rover deployment from the lander after landing on the lunar surface. Copyright: ISRO</span><br /></div><br />Chandrayaan-2, India's next shot to the moon has come a long way since the project was first conceptualized back in first half of this decade. Although some payloads have already been finalized the process is expected to be fully completed in 2 months time. ISRO has had thousands of payload proposals from different countries on the table, from which it will have to finalize the payloads. Afterall the orbiter can accommodate only 50 kg of scientific payload.<br /><br />The total weight of Chandrayaan-2 at launch will be 2457 kg, this including the lander and the orbiter. The orbiter and lander will be connected by an inter module adapter. The mass of the orbiter will be 1317 kg, of which 830 kg will be propellant for the orbiter and 487 kg will be the actual dry mass of the orbiter. Of 487 kg dry mass of the orbiter, the actual scientific payloads will weigh 50 kg. Only 10 kg of payload space will be open to international space agencies for their payloads.<br /><br />Now, for the most exciting part. ISRO has gone ahead with the plant soft-land the rover on the lunar surface. The rover will be inside the rover-module of the lunar lander. As explained above the lander will be connected to the orbiter at launch. The total mass of the lander will be 1100 kg.<br /><br />Out of the 1100 kg lander, 680 kg will be the propellant used for thrusters on the lunar-lander for soft landing. On the lunar surface the lander will weigh 420 kg including the rover and rover-module. Once the lander has landed on the lunar surface the 2 rovers, one Russian and another India will then emerge from the rover-module onto the surface of the moon.<br /><br />Many of the scientific instruments on the lander/rover have already been finalized. The rover will drill into the lunar soil and obtain samples for analysis. The <span style="font-weight: bold;">Regolith Evolved Gas Analyzer (REGA)</span> and Mass Spectrometer will analyze the composition of Lunar soil. Two instruments, a <span style="font-weight: bold;">Tunable Diode Laser</span> and a <span style="font-weight: bold;">Laser Induced ion Mass Spectrometer</span> will look for the presence of water in the polar shadowed region of the moon.<br /><br />Presently, ISRO is on-schedule for a 2013 launch of Chandrayaan-2. Chandrayaan-2 will be the stepping stone for a lots of things that in the future that ISRO already has planned for.Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com51tag:blogger.com,1999:blog-9104609822425671471.post-56080933648643559432010-01-27T23:01:00.004+05:302010-01-28T00:53:36.680+05:30Indian Human Spaceflight Program officially disclosedThe Chairman of the Indian Space Research Organization officially disclosed the commencement of the Indian Human Spaceflight Program in Bangalore on January 27th, 2010. Dr. Radhakishanan told the reporters that the much awaited approval by the union cabinet was received and that ISRO planned to conduct the first flight in 2016, revised from the previously announced date of 2015.<br /><br />The Chairman reiterated that ISRO would require 4 years to design the 'orbital vehicle' and another 3 years for testing and unmanned flights. ISRO is in the process of setting up a new astronaut training facility in Bangalore with the help of the Russian Space Agency. The media were also told that ISRO would shortly finalize 2 candidates as astronauts for the 2016 mission. These 2 astronauts would first travel to space aboard a Soyuz in 2013 to get the required experience for the indigenous manned mission 3 years later.Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com0tag:blogger.com,1999:blog-9104609822425671471.post-70137647913945065642010-01-25T02:03:00.003+05:302010-01-25T02:49:54.525+05:30PICTURES: S200, L110 static firing preparation<div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://img46.imageshack.us/img46/8794/s2004.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 444px; height: 557px;" src="http://img46.imageshack.us/img46/8794/s2004.jpg" alt="" border="0" /></a>S200 segment assembly at the new SRB facility at SHAR. Copyright:ISRO<br /></div><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://img705.imageshack.us/img705/2820/s2002.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 640px; height: 397px;" src="http://img705.imageshack.us/img705/2820/s2002.jpg" alt="" border="0" /></a>Employee checking the alingnment of S200 on the test bed. Copyright:ISRO<br /></div><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://img27.imageshack.us/img27/575/s2001b.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 639px; height: 396px;" src="http://img27.imageshack.us/img27/575/s2001b.jpg" alt="" border="0" /></a>Thrust frame being mated with the head of the motor. Copyright:ISRO<br /></div><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://beta.thehindu.com/multimedia/dynamic/00027/AVN25_PROPELLANT_27326f.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 636px; height: 356px;" src="http://beta.thehindu.com/multimedia/dynamic/00027/AVN25_PROPELLANT_27326f.jpg" alt="" border="0" /></a>S200on the test bed. Copyright:The Hindu<br /></div><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://beta.thehindu.com/multimedia/dynamic/00027/AVN23_GSLV_27187e.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 318px; height: 458px;" src="http://beta.thehindu.com/multimedia/dynamic/00027/AVN23_GSLV_27187e.jpg" alt="" border="0" /></a>L110 being readied for February tests. Copyright:The Hindu<br /></div><br /><div style="text-align: center;"><a target="_blank" href="http://img199.imageshack.us/i/s2003.jpg/"><img src="http://img199.imageshack.us/img199/4219/s2003.th.jpg" border="0" /></a><br /></div><br /><div style="text-align: center;">Motor test bed. Copyright:ISRO<br /></div>Gopala Krishnahttp://www.blogger.com/profile/15430638406790962609noreply@blogger.com0