The Geosynchronous Satellite Launch Vehicle (GSLV) with improvements added to its cryogenic upper stage (CUS) is expected to be ready in the second half of this year.
About:
A high-level panel which examined last year’s failed GSLV-F10/EOS-03 mission had recommended measures for making the CUS more robust.
Indian Space Research Organisation’s Liquid Propulsion Systems Centre (LPSC) is tasked with making the required modifications to the cryogenic engine-powered upper stage of the GSLV Mk II rocket.
The GSLV-F10 mission on August 12, 2021 was designed to place the earth observation satellite EOS-03 in a geosynchronous transfer orbit, but the upper stage of the rocket malfunctioned, forcing the space agency to abort the mission.
A national-level Failure Analysis Committee (FAC) later concluded that a leak in a Vent and Relief Valve (VRV) had led to a lower build-up of pressure in the Liquid Hydrogen (LH2) propellant tank, leading to a failed mission.
Pressure build-up in the liquid hydrogen (LH2) propellant tank was low when the upper stage engine was to ignite.
This caused the fuel booster turbo pump inside the LH2 tank, which feeds the main turbo pump of the engine to malfunction, affecting the flow of propellant into the engine thrust chamber.
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