Tit Bit News

Discussion in 'Defence & Strategic Issues' started by arnabmit, Sep 14, 2013.

  1. arnabmit

    arnabmit Homo Communis Indus Senior Member

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    How Obama swearing-in scuttled BrahMos missile’s test flight

    The swearing-in ceremony of Barack Obama as US President in January 2009 had a disastrous impact on the test-firing of the BrahMos supersonic missile, according to A. Sivathanu Pillai, chief executive and managing director.

    The missile team had a nasty surprise when the test-firing failed. On analysis, the reason was traced to an erroneous GPS calculation.

    On detailed investigation, it was revealed that due to security reasons, the US had switched off GPS signals during the swearing-in ceremony.

    This was unexpected and the control and navigational system of the missile, which uses GPS data, failed. Pillai said this during a seminar here on ‘Achieving excellence through lessons from successes and failures’ at the Vikram Sarabhai Space Centre.
     
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  3. arnabmit

    arnabmit Homo Communis Indus Senior Member

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    DESTRAUGHT KALAM

    Former President and ace space scientist A.P.J Abdul Kalam and his team once demonstrated an experiment to Vikram Sarabhai, but it failed.

    The time was around 7 p.m. Sarabhai consoled Kalam and asked him to rectify the defects and get going by 9 p.m.

    Later into the night, Sarabhai witnessed the demo once again but it failed a second time. Sarabhai said he would come back next morning. Kalam and his team worked through the night and set up the system.

    Sarabhai walked in early next morning. Before Kalam could set up the show, he was called aside and told: “I want to give you a paper.”

    Kalam nervously skimmed through the contents only to find that it was his promotion order.
     
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  4. arnabmit

    arnabmit Homo Communis Indus Senior Member

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    COMPUTING INGENUITY

    The Prithvi missile programme demanded super computing prowess that India did not possess. The US was not ready to make the computer available to India either.

    Kalam led a small team of scientists to the US to see whether the US Government could be persuaded to sell their super computer Craig.

    But an apprehensive US official turned down the request and told Kalam: “Sorry Dr Kalam, we will give you good lunch and dinner, but no Craig computer.”

    Kalam came back empty-handed, but went on to develop the Pace Plus computer with help from the Indian Institute of Science and others in two years. And, Pace Plus proved to be 20 times faster than Craig!
     
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  5. drkrn

    drkrn Senior Member Senior Member

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    nice thread
     
  6. hitesh

    hitesh New Member

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    This is bullshit ,BrahMos missile use Intertial Navigation System (INS) and why would a indo russian missile use gps insted of russian glonass signals .:rofl:
     
  7. Abhijeet Dey

    Abhijeet Dey Regular Member

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    Maybe because Russian scientists insisted in using Russian GLONASS but the Indian side refused because they knew only GPS systems.
     
  8. p2prada

    p2prada Stars and Ambassadors Stars and Ambassadors

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    The story is true.

    Due to this debacle, Brahmos now uses GLONASS.
     
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  9. SajeevJino

    SajeevJino Long walk Elite Member

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    So if the US and Russians Turned off their GPS ..No GPS guided Missiles gets Navigation .

    What about Chinese and Ours
     
  10. Abhijeet Dey

    Abhijeet Dey Regular Member

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    That is the reason why India is launching its own desi GPS (Indian Regional Navigational Satellite System or IRNSS).
     
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  11. SajeevJino

    SajeevJino Long walk Elite Member

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    Can you Please shed Some News about our Own GPS ...thanks
     
  12. Abhijeet Dey

    Abhijeet Dey Regular Member

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    India’s first navigation satellite soars to success
    The Hindu: July 2, 2013

    With this launch, India has entered a new era in space applications, says ISRO chief.

    India’s first dedicated navigation satellite, the IRNSS-1A, developed by the Indian Space Research Organisation, was successfully put in orbit on Monday night.

    The launch vehicle, PSLV-C22, bearing the 1,425-kg navigation satellite, blasted off the launch pad at the Satish Dhawan Space Centre here at the scheduled lift-off time of 11.41 p.m.

    As the PSLV-C22 tore into the night skies and set off four stages of ignition and separation, all the while gaining in altitude and velocity, down on earth, twitchy mission controllers at the command centre awaited the final confirmation of the mission’s success.

    A round of applause greeted the successful kick-starting of the fourth stage of ignition, arguably the most critical component of the mission to place the satellite in the targeted orbit.

    About 20 minutes after the lift-off, the PSLV-C22 completed its task of injecting the IRNSS-1A into a sub geosynchronous transfer orbit with a 284-km perigee (nearest point to the Earth) and 20,650 km apogee (farthest point from the Earth).

    As the final act of the rocket separating from the satellite unfurled on the giant screen at the mission control room, the gathering of scientists and engineers broke into cheers and applause.

    Once again, Team ISRO had pulled off with clockwork precision the roughly 65-hour countdown that began on June 29 and ended in the lift-off close to midnight on July 1.

    ISRO Chairman K. Radhakrishnan, who congratulated the team, said that with the successful launch, India had entered a new era in space applications.

    P.J. Kurien, Deputy Chairman, Rajya Sabha, said it was a great moment for the nation.

    Yash Pal, one of the doyens of India’s space programme, was also present.

    The IRNSS-1A is the first of the proposed seven satellites in the Indian Regional Navigation Satellite System. Apart from India, its benefits would extend to a range of 1,500 km in the region.

    With a mission life of 10 years, it will deliver applications ranging across terrestrial, aerial and marine navigation, disaster management, tracking of vehicles, guiding hikers and travellers, and visual-voice navigation for drivers.

    The PSLV-XL used for the launch does not directly transfer satellites into a geosynchronous orbit. Instead, it puts the satellite into an interim sub Geosynchronous Transfer Orbit (sub-GTO), from where thrusters are used to push the satellite into geosynchronous orbit.

    Once it has been injected into the preliminary orbit, solar panels of the satellite are automatically deployed and the Master Control Facility at Hassan, Karnataka, takes over the control of the satellite — from the initial orbit raising manoeuvres to the final placement in the circular geosynchronous orbit.

    Some of the features of the IRNSS-1A are two solar panels with ultra triple junction solar cells that can generate about 1,660 watts of electrical power, Sun and star sensors as well as gyroscopes to provide orientation.

    It also carries Corner Cube Retro Reflectors for laser imaging and is endowed with a highly accurate Rubidium atomic clock.
     
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  13. arnabmit

    arnabmit Homo Communis Indus Senior Member

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  14. SajeevJino

    SajeevJino Long walk Elite Member

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    So we have a Operations Navigation System

    So why we Still Using Russian GLONASS For our Missiles
     
  15. Abhijeet Dey

    Abhijeet Dey Regular Member

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    Not yet operational. ISRO has launched only one IRNSS satellite into orbit. India needs a total of 7 IRNSS satellites (6 more) to make it operational. Next 6 IRNSS satellite will be completed in the end of 2014 as per ISRO.

    Maybe 2015 or 2016 this system will be integrated with Brahmos missile.
     
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  16. SajeevJino

    SajeevJino Long walk Elite Member

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    So until now we will still need Russian Systems

    Is it only for Brahmos are all other GPS based Hardwares
     
  17. Abhijeet Dey

    Abhijeet Dey Regular Member

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    The IRNSS would provide two services, with the Standard Positioning Service open for civilian use and the Restricted Service, encrypted one, for authorized users (military including Brahmos).

    Link:
    en.wikipedia.org/wiki/Indian_Regional_Navigational_Satellite_System
     
  18. W.G.Ewald

    W.G.Ewald Defence Professionals/ DFI member of 2 Defence Professionals

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    I can't believe that would have not caused global chaos and worldwide disasters. It has been my understanding the US military can only limit GPS accuracy to a certain extent. The subject is worth a thread of it's own. I am thinking of a title such as "GPS systems, capabilities and vulnerabilities".
     

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