What is the primary function of the Gaganyaan Service Module Propulsion System (SMPS) tested by ISRO?

Solution

ISRO successfully tested the Gaganyaan Service Module Propulsion System (SMPS) on July 19. The test involved five 440 N thrust Liquid Apogee Motor (LAM) engines and 16 100 N thrust Reaction Control System (RCS) thrusters. The SMPS is a bi-propellant based propulsion system that performs various functions during the ascent phase, including orbit injection, circularisation, on-orbit control, de-boost manoeuvring, and abort (if required). The LAM engines provide main propulsive force during ascent, while RCS thrusters ensure precise altitude correction. The test involved a System Demonstration Model (SDM) with a duration of 250 seconds. ISRO plans to conduct Gaganyaan's first abort test in August. About ISRO Founded: 15 August 1969      Headquarters: Bengaluru         Chairperson: S. Somanath