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ISRO News & Discussions

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

  1. X_Killer

    X_Killer Captain FULL MEMBER

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    Everything has its utmost importance like
    Needle and sword has their own significance and importance. Neither one can replace each other.

    Improvement is always a required factor in any field. DRDO needs to attain its improvements required at urgent call whereas we can/may stick with present pace.
     
    Wolfpack likes this.
  2. Guynextdoor

    Guynextdoor Lt. Colonel SENIOR MEMBER

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    'm sure weatherwise it's more problematic at SHAR. And SHAR is not the most livable place for employees.
     
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  3. Zer0reZ

    Zer0reZ 2nd Lieutant FULL MEMBER

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    ISRO Develops Ship-Based Antenna System to Track Satellite Launches

    The Indian Space Research Organisation (ISRO) has successfully designed and developed a ship-borne transportable antenna terminal to fulfill the telemetry tracking and command requirements for all satellites and launch vehicle missions.

    New Delhi (Sputnik) — ISRO Telemetry, Tracking and Command Network (ISTRAC)'s 4.6-meter ship-borne antenna system has been built indigenously and consists of three-axis Antenna Mount, a Motion Simulator, Reflector and Feed, Servo Control Systems and RF Electronics.
    It can be easily mounted on mobile telemetry, tracking and command (TTC) stations even in mid-sea wherein conventional ground station antenna will not be suitable. Moreover, the agency has done it in a cost-efficient manner and roped in industry support as well, as part of its policy to promote greater private sector participation in future projects.

    Experts said the main reason to develop a ship-borne antenna system is to provide tracking and command support to deep space missions as ISRO is planning quite a few of them.

    "A ship-borne tracking system was very much needed as ISRO is planning for deep space missions. In addition to being tracked by ground stations in India, the Mangalyaan mission was also tracked in the Asia-Pacific. As ISRO has planned deep space missions, including Chandrayaan and others, it will require the capability to track them beyond our territory and this is where this system will be used. As ISRO has already established a network of ground TTC stations, it already had the basic knowledge to build such a system," Dr Mayank Vahia, an astrophysicist from Mumbai-based Tata Institute of Fundamental Research, told Sputnik.

    Bengaluru-based ISTRAC provides tracking support for all satellite and launch vehicle missions of the agency, including space operations support for Deep Space Missions.


    Deep Space Missions require a large number of ground stations to provide TTC support. Some of these launches based on vehicle trajectory and visibility requirement require the TTC stations to be located in mid-sea wherein conventional ground station antennas are not handy.
    ISTRAC worked on technical aspects and aimed at building a system comparable to internationally available systems. The system was tested and validated on a motion simulator. The final system check was done in a sea trial, successfully tracking PSLV-C38, located on Sagar Manjusha, a ship hired from the National Institute of Ocean Technology.

    PSLV-C38 was launched on June 23 from the spaceport in Sriharikota in Andhra Pradesh, carrying the Cartosat-2 series satellite — a dedicated satellite for the defense forces — along with 30 nanosatellites as co-passengers.
     
  4. kurup

    kurup 2nd Lieutant IDF NewBie

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    PSLV launch scheduled

    BAY OF BENGAL AND INDIAN OCEAN (.)CHARTS 32 33 41 313 356 391 INT 70 71 (.)

    PSLV LAUNCH SCHEDULED FROM 31 AUG – 02 SEP 17 BETWEEN 1200 - 1600 UTC FROM 13-43.2N 080-13.8E

    2. DANGER ZONE AS FOLLOWS

    ZONE -1: CIRCLE OF 10 NM AROUND LAUNCHER
    ZONE–2: 13-30N 080-30E, 13-50N 080-35E, 13-35N 081-30E, 13-15N 081-25E
    ZONE–3: 13-00N 082-10E, 13-30N 082-15E, 12-55N 084-05E, 12-25N 084-00E
    ZONE–4: 12-20N 084-05E, 13-00N 084-15E, 12-45N 085-10E, 12-05N 085-00E
    ZONE–5: 11-10N 088-25E, 11-45N 088-35E, 11-25N 089-40E, 10-50N 089-30E
    ZONE–6: 09-05N 094-50E, 09-55N 095-05E, 09-35N 096-00E, 08-45N 095-45E
    ZONE–7: 19-00S 134-00W, 17-00S 134-00W, 13-00S 112-00W, 07-30S 090- 00W, 09-30S 090-00W, 15-00S 112-00W

    3. CANCEL THIS MSG 021700 UTC SEP 17
     
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  5. kurup

    kurup 2nd Lieutant IDF NewBie

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    ^^^^^^

    pslv-1.jpg

    pslv-2.jpg

    Zone 7 , where the third stage falls into , is very close to South America .
     
  6. kurup

    kurup 2nd Lieutant IDF NewBie

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    Heat shield didnot seperate ...... as a result PSLV launch failed .
     
  7. Zer0reZ

    Zer0reZ 2nd Lieutant FULL MEMBER

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    IRNSS-1H mission unsuccessful as heat shield fails to separate, says ISRO chairman

    The heat shield failed to separate after the Indian Space Research Organisation launched the navigation satellite IRNSS-1H from Sriharikota on Thursday. Further analysis will be carried out later.
    Indian Space Research Organisation (ISRO) launched the navigation satellite IRNSS-1H from Sriharikota on Thursday.
    The launch will augment the existing seven satellites of the NavIC constellation.
    IRNSS-1H would be a back up navigation satellite for IRNSS-1A one of the seven satellites of the constellation, as its three rubidium atomic clocks on board had stopped functioning.
    The launch vehicle PSLV-C39 rocket carried the satellite.


    A consortium led by Bengaluru-based Alpha Design Technologies successfully completed 25 per cent of the development work of IRNSS-1H, under the guidance of ISRO scientists. Earlier, the private sector's role was only limited to supplying components to ISRO.
    A crucial part of the development of IRNSS-1H happened at the newly developed ISRO space park.
    Scientists measure the position of a satellite with the help of time. To find the satellite's position with an accuracy of 0.5 metre, atomic clocks are used as they are very precise. The atomic clocks that stopped working were imported from European aerospace manufacturer Astrium.
    he satellite would have joined the existing seven satellites of NavIC (Navigation with Indian Constellation). The Rs 1420-crore independent regional navigation satellite system is developed by India and is similar to Global Positioning System (GPS) of the US, which has 24 satellites in the orbit.
    The navigation system would have been helpful for railways in tracking trains and also giving alerts for unmanned level crossings. It would have also helped fishermen reach the fishing area as it could send alerts about bad weather conditions. These navigation services are provided through a software application on a smartphone.

    Read more at:
    http://economictimes.indiatimes.com...ofinterest&utm_medium=text&utm_campaign=cppst
     
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  8. GuardianRED

    GuardianRED Captain FULL MEMBER

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    What possible step can be taken to rectify this?
     
  9. kurup

    kurup 2nd Lieutant IDF NewBie

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    I don't think it is rectifiable ....... that sat is gone .
     
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  10. GuardianRED

    GuardianRED Captain FULL MEMBER

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    :cray:

    The sad part is the BS reporting ... where it looks like at the assembly stage there could be an issue. BUT every where it is implied that the blame on the PVT Co. who built the satellite (actual reality is that they built a small part) that is responsible

    Am i right?
     
  11. sangos

    sangos Lt. Colonel ELITE MEMBER

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    Its this darned container that did not separate into 2 halves after the final stage. So the satellite is still inside it intact, undeployed and orbiting in space. Somebody needs to go up with an axe/chisel &hammer,catch up with the payload and pry it open.:butcher:
    [​IMG]
     
    Last edited: Sep 2, 2017
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  12. kurup

    kurup 2nd Lieutant IDF NewBie

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    In case of PSLV , the heat shield seperation happens during the second stage ...... so its a mystery why they continued the mission when they knew the heat shield seperation didnot happen ........ or they never knew it untill the last minute :undecided:

    [​IMG]
     
  13. sangos

    sangos Lt. Colonel ELITE MEMBER

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    This is a good opportunity for DRDO to test an ASAT precision strike. The goal will be to crack the heat shield open with a glancing blow without damaging the satellite.:troll:
     
  14. TrueGR!T

    TrueGR!T FULL MEMBER

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    http://idrw.org/real-time-satellite-info-help-border-forces-check-intruders-pak-china-border-soon/

    We must go for high resolution multi spectral plenoptic cameras on our satellites which enable simultaneous real time analysis of multiple areas.
    The satellite must be able to track any Jehadi pigs trying to act cute on our Western border, while the same camera at the same time, is used to detect a PLA joker farting from too close to our Eastern border (using IR :wink:).

    https://pdfs.semanticscholar.org/3255/8a630dc5a0473f722bee5fed41e3752bcac9.pdf

     
    Last edited: Sep 4, 2017
  15. Gessler

    Gessler Lt. Colonel IDF NewBie

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    ISRO hold talks with ArianeGroup

    [​IMG]


    Collaboration being the global buzzword these days in space exploration, the ISRO is turning its gaze Europe-wards. Top VSSC officers and Paris-based ArianeGroup on Saturday met at VSSC, Thumba, and held discussions to identify areas for possible collaboration.

    ArianeGroup builds and operates the Ariane family of launch vehicles and is the European Space Agency’s (ESA) primary contractor for the futuristic Prometheus rocket engine. VSSC director K Sivan, who called his meeting with Marc Vales, head, Future Programmes, ArianeGroup, a ‘’brainstorming session’’, said a couple of possible areas for collaboration were explored, including the Reusable Launch Vehicle (RLV) programme. ‘’Our RLV programme is in its preliminary stages. They too have a similar one. It will be of use for both groups,’’ he said. Vales was here for the two-day ASET 2017 international conference organised by the Aeronautical Society of India (AeSI).

    Among other things, ISRO also has shown interest in the ESA’s planned Prometheus rocket engine which uses methane as propellant along with liquid oxygen (LOX). Sivan attributed ISRO’s interest to the reusability potential of the engine. He declined to divulge more details about Saturday’s discussions but stressed nothing has been finalised. ‘’We discussed potential areas where collaboration was possible. The details will be passed on to the ISRO management,’’ he said.

    Vales told Express both agencies have identified topics for collaboration. ArianeGroup builds and operates the Ariane 5 rocket, one of the best-known of its type, for ESA. Currently, it is developing the Ariane 6.

    The Prometheus project began as a collaboration between French space agency CNES and ArianeGroup in 2015, but has since then taken on a wider, more European character. India’s collaboration with France in space-related matters goes back to the Viking engine, which was the model for the Vikas engine used in the PSLV and GSLV.

    http://www.newindianexpress.com/sta...isro-hold-talks-with-arianegroup-1662207.html

    @Picdelamirand-oil @BON PLAN @Vergennes @halloweene
     

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