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ISRO News & Discussions

Discussion in 'Education & Research' started by Varad, Apr 17, 2011.

  1. Varad

    Varad Lieutenant FULL MEMBER

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    Re: Isro new and discussions

    Great launch ISRO. Gear up for GSLV now.:india:
     
  2. Dilemma

    Dilemma Captain SENIOR MEMBER

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    Re: Isro new and discussions

    Congratulations!
     
  3. flanker143

    flanker143 Captain SENIOR MEMBER

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    Re: Isro new and discussions

    Congrats isro !!!
    Good luck with the future lauches.........happy rocketing !!!
     
  4. RoYaN

    RoYaN Lt. Colonel ELITE MEMBER

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    Re: Isro new and discussions

    Some one Edit the Title!!
    Congrats ISRO!!!
     
  5. Desi Jatt

    Desi Jatt Captain ELITE MEMBER

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    Re: Isro new and discussions

    Congratulations ISRO !!!
     
  6. Desi Jatt

    Desi Jatt Captain ELITE MEMBER

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    Re: Isro new and discussions

    [​IMG]
     
  7. flanker143

    flanker143 Captain SENIOR MEMBER

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    Re: Isro new and discussions

     
    Last edited by a moderator: Mar 12, 2014
  8. flanker143

    flanker143 Captain SENIOR MEMBER

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    Last edited by a moderator: Mar 12, 2014
  9. flanker143

    flanker143 Captain SENIOR MEMBER

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  10. indian spetsnaz

    indian spetsnaz 2nd Lieutant FULL MEMBER

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    Re: Isro new and discussions

    hats off yo our scientists!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
     
  11. Varad

    Varad Lieutenant FULL MEMBER

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    Re: Isro new and discussions

    Design flaw behind GSLV crash

    BANGALORE: Design deficiency in the shroud (cover) at the bottom of the cryogenic stage has been identified as the primary factor in the crash of Isro's GSLV-F06 flight on December 25, 2010, over the Bay of Bengal. A report on this has been submitted to the department of space.

    The cover at the bottom of the cryogenic stage could not withstand load and pressure distribution that built up as the flight took off and caused the "pulling out" of the connectors between the onboard computer in the equipment bay and four strap-ons on the first stage, aborting a signal to the strap-ons, ultimately leading to altitude dip and crash, failure analysis committee chairman and former Isro chairman G Madhavan Nair told TOI.

    "There is a need for correction in the design of the shroud. The shroud at the bottom of the cryogenic stage did not fulfil all service conditions during the flight, as a result of which the connectors linked to the shroud snapped. The connectors were linked to the shroud."

    "The shroud was influenced by the pressure distribution that built up in the flight at around 46 seconds and was distorted. 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.

    The space scientist said two key recommendations have been made for future course of action — either make the shroud stronger/tougher or do away with it altogether. "The second is a possibility which we need to work out. If that is possible, all other parameters of the GSLV are fine. A successful flight of the GSLV is not an impossibility."

    Design flaw behind GSLV crash - The Times of India
     
  12. Desi Jatt

    Desi Jatt Captain ELITE MEMBER

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    Singapore delighted at ISRO's launch of X-Sat

    The news of India's success in launching Singapore's experimental satellite, X-Sat, was greeted with delight here on Wednesday.

    The Nanyang Technological University (NTU), which played a role in charting Singapore's tryst with the outer space, said India's Polar Satellite Launch Vehicle PSLV-C16 placed the 105-kg X-Sat in the “planned orbit around the Earth.â€

    Built by NTU

    Singapore's “first indigenous micro-satellite†was “developed and built†by the NTU in “collaboration with DSO National Laboratories,†a defence research and development organisation here.

    The mission control station at the NTU's Research Techno Plaza started trying to establish contact with X-Sat shortly after it was sky-rocketed into a pre-determined orbit.

    Three payloads

    “X-Sat carries three payloads†and “research associated with earth remote-sensing applications†would be carried out during the “mission life of three years,†it was said.

    “Huge leap for researchâ€

    NTU president Su Guaning said: “We are delighted with the successful launch of Singapore's first experimental micro-satellite into space. This represents a huge leap for our local research and development endeavours in space technology and [in] building micro-satellites.â€

    Dr. Su expressed hope that the space venture “will excite and inspire our youths.â€

    The Hindu : News / International : Singapore delighted at ISRO's launch of X-Sat
     
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  13. Desi Jatt

    Desi Jatt Captain ELITE MEMBER

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    ISRO to build orbiter for NASA :tup::tup:

    The National Aeronautics and Space Administration (NASA) has asked the Indian Space Research Organisation (ISRO) to build an orbiter that will provide the communication between the soil samples collected from the far side of the moon and the earth, according to ISRO Chairman K. Radhakrishnan.

    This joint venture between the ISRO and the Jet Propulsion Laboratory in Pasadena, California, would be part of the Moonrise missions planned by the NASA.

    “This project is in the planning phase, alongside India's lunar mission programme centred on Chandrayaan-2,” he said.

    The ISRO would provide an orbiting communicator to the NASA for this mission, scheduled for 2016.

    Chandrayaan-2 would be put in an orbit around the moon by a Geo-synchronous Satellite Launch Vehicle (GSLV) in 2013 and the project would cost Rs.462 crore, Mr. Radhakrishnan said. It would be a joint mission with Russia: while the spacecraft and the rover would be built by India, the lander would be from Russia.

    The two-member committee the Centre had appointed to go into the allocation of the S-band spectrum to private company Devas by ISRO's commercial arm Antrix Corporation had submitted its report. The government would give it to the ISRO, which would act on it, he said.

    The Hindu : News / National : ISRO to build orbiter for NASA
     
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  14. Varad

    Varad Lieutenant FULL MEMBER

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    Re: Isro new and discussions

    ISRO to conduct GSLV test flight in 2012 with Russian cryogenic stage engine


    SRIHARIKOTA : The Indian Space Research Organisation ( Isro ) will conduct a test flight of Geosynchronous Satellite Launch Vehicle ( GSLV ) with a Russian cryogenic stage engine by the first half of 2012, said its chairman K Radhakrishnan .

    The test flight would be conducted only after making necessary improvements based on the analysis of the GSLV F06 that failed on December 25, 2010.

    "We modified the booster pump in the liquid propulsion tank and tested it on Tuesday . More tests need to be conducted before it is integrated with the engine . We are also looking at a problem posed by the shroud of the rocket . The shroud failed so the connector could not function ," said S Ramakrishnan , director , Liquid Propulsion Systems Centre of Isro . Of the seven engines procured from Russia , only two are left, said Ramakrishnan .

    Two of India's GSLV launches last year had failed - GSLV (D3) on April 15 and GSLV- F06 on December 25. Isro has had a troubled past with GSLV , on which rest India's ambitious space programmes like the manned mission to space . Only two of the seven GSLV launches have been total successes. Though Isro claims that four launches had been successful, independent observers say only two of them were total successes.
    ISRO to conduct GSLV test flight in 2012 with Russian cryogenic stage engine - The Economic Times
     
  15. Varad

    Varad Lieutenant FULL MEMBER

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    ISRO’s main test will be to master GSLV launches


    Space scientists have reason to be proud of their successful mission on Wednesday. The time-tested Polar Satellite Launch Vehicle took off as commanded and placed three satellites in the orbit. That they have mastered the technology involved is borne out by the fact that it was the 17th successful mission on the PSLV platform. The payloads included an indigenously built, high-capability, resourcing-mapping satellite, and two foreign ones, including an Indo-Russian Nano satellite. The success proves India’s prowess in both building satellites and launching them. This opens a host of opportunities in the highly-competitive satellite-launching business.
    The PSLV has its limitations, in terms of the payload and the orbits in which it can place them. These confines can be crossed only by developing the Geosynchronous Satellite Launch Vehicle which uses cryogenic engines. Out of the seven GSLV missions so far, four were unsuccessful. The last one in December failed because of a glitch. The Indian Space Research Organisation now claims that it has identified the glitch, which was in the booster turbo pump, and necessary modifications have been made.
    India’s future space programmes depend a lot on its mastery of cryogenic engine technology. Its ambitious Chandrayaan mission, the successful culmination of which will be an Indian landing on the moon, is dependent on it. As it is the same technology used in the launching of long-range missiles with heavy payloads, it is crucial for India’s defence preparedness as well. That only a few countries have the capability to build a cryogenic engine makes the ISRO’s task all the more challenging. It should, therefore, do everything possible to make the next GSLV launch as fool-proof as Wednesday’s PSLV launch.

    ISRO
     

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