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ISRO successfully tests Gaganyaan Service Module Propulsion System

ISRO successfully tests Gaganyaan Service Module Propulsion System

The Hindu
Thursday, July 20, 2023 9:43 AM GMT

With the successful completion of the hot test, the Service Module Propulsion System (SMPS) demonstrated its performance in the full configuration.

Indian Space Research Organisation (ISRO) successfully tested the Gaganyaan Service Module Propulsion System (SMPS) at ISRO Propulsion Complex in Mahendragiri, Tamil Nadu, on July 19.

This test involved five liquid apogee motor (LAM) engines with a thrust of 440 N, and 16 reaction control system (RCS) thrusters with a thrust of 100 N.

The service module of Gaganyaan is a regulated bi-propellant based propulsion system that caters to the requirements of the Orbital Module, performing orbit injection, circularisation, on-orbit control, de-boost manoeuvring, and SM-based abort (if any) during the ascent phase.

The 440 N thrust LAM engines provide the main propulsive force during the ascending phase, while the RCS thrusters ensure precise altitude correction.

The hot test of the System Demonstration Model (SDM) emulated the fluid circuit of the Service Module Propulsion System, encompassing the propellant tank feed system, helium pressurisation system, flight-qualified thrusters, and control components.

The first hot test of the Phase-2 test series demonstrated the integrated performance of the Gaganyaan Service Module Propulsion System. The test, conducted for a duration of 250 seconds, involved LAM engines firing in continuous mode, along with RCS thrusters, adhering to the test profile.

As part of the Phase-1 test series of service module SDM, ISRO had carried out five hot tests, totalling a duration of 2,750 seconds.

Read full story on The Hindu
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