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posted by hubie on Thursday August 11 2022, @11:23PM   Printer-friendly
from the rocket-science-is-still-hard dept.

ISRO, has attributed the problem to a sensor issue and vowed to come back 'soon with SSLV-D2':

The Indian Space Research Organisation (ISRO) maiden's small satellite launch vehicle (SSLV), carrying earth observation satellite EOS-02 and co-passenger students satellite AzaadiSAT, didn't go as planned on Sunday.

The mission went awry as the SSLV-D1 placed the satellites in an elliptical orbit instead of a circular one, rendering them "no longer usable", as ISRO later said in a statement.

In its statement, ISRO said, "SSLV-D1 placed the satellites into 356 km x 76 km elliptical orbit instead of 356 km circular orbit. Satellites are no longer usable. Issue is reasonably identified. Failure of a logic to identify a sensor failure and go for a salvage action caused the deviation."

[...] The mission by the space agency was aimed at garnering a larger pie in the small launch vehicles market, as it could place the satellites into Low Earth Orbit.

As per a report published in The Wire, the problem appeared to be the SSLV's terminal stage, called the velocity trimming module (VTM). According to the launch profile, the VTM was supposed to have burnt for 20 seconds at 653 seconds after launch. However, it burnt for only 0.1 seconds, denying the rocket of the requisite altitude boost.

[...] According to the ISRO, "failure of logic to identify a sensor failure and go for salvage action caused the deviation. A committee would analyse and recommend. With the implementation of the recommendations, ISRO will come back soon with SSLV-D2".


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  • (Score: 0, Flamebait) by Runaway1956 on Friday August 12 2022, @12:03AM (5 children)

    by Runaway1956 (2926) Subscriber Badge on Friday August 12 2022, @12:03AM (#1266223) Homepage Journal

    Who sold them the faulty sensor? Zucherburger? Boeing? Alley-BaaBaa? North Korea? Sounds like sabotage to me!

    --
    Abortion is the number one killed of children in the United States.
    • (Score: 3, Insightful) by krishnoid on Friday August 12 2022, @12:16AM (4 children)

      by krishnoid (1156) on Friday August 12 2022, @12:16AM (#1266225)

      My concern was that more that it was *a* [wikipedia.org] sensor failure.

      • (Score: 3, Insightful) by ls671 on Friday August 12 2022, @03:13AM (1 child)

        by ls671 (891) on Friday August 12 2022, @03:13AM (#1266244) Homepage

        What if the majority gate fails?

        --
        Everything I write is lies, read between the lines.
      • (Score: 5, Interesting) by driverless on Friday August 12 2022, @10:56AM

        by driverless (4770) on Friday August 12 2022, @10:56AM (#1266286)

        They'll learn and get it right the next time. Every space program is beset by failures, you learn from them and do better next time. At the time the US launched its first man into space, there was a one in three change the rocket would explode. That's not "place him in the wrong orbit" or "return to earth prematurely", it's "turn into a gigantic fireball and kill everyone on board". So by rocketry standards this was a relatively minor glitch.

      • (Score: 2) by Freeman on Friday August 12 2022, @02:57PM

        by Freeman (732) Subscriber Badge on Friday August 12 2022, @02:57PM (#1266318) Journal

        Eventually, you get down to one thing that the whole system relies upon. When/if it goes *poof*, you get spectacular results. Such as rapid unplanned disassembly.

        --
        Joshua 1:9 "Be strong and of a good courage; be not afraid, neither be thou dismayed: for the Lord thy God is with thee"
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