ISRO successfully tests Gaganyaan Service Module Propulsion System

A file photo of the poster of Orbital and Service Module of Gaganyaan.

Indian Space Research Organization (ISRO) successfully tested will be the same The Service Module Propulsion System (SMPS) at the ISRO Propulsion Complex in Mahendragiri, Tamil Nadu on July 19.

The test consisted of 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 each.

The Service Module of Gaganyaan is a regulated bi-propellant based propulsion system that meets the requirements of the Orbital Module, performs orbit injection, circularization, on-orbit control, de-boost maneuver and SM-based abort (if any). climbing stage.

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

The warm test of the System Demonstration Model (SDM) simulated the fluid circuits of the service module propulsion system, including the propellant tank feed system, helium pressurization system, flight-qualified thrusters and control components.

The first warm-up 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, consisted of firing the RCS thrusters as well as the LAM engines in continuous mode following the test profile.

As part of the Phase-I test series of the Service Module SDM, ISRO had conducted five hot tests, with a total duration of 2,750 seconds.

Stage-I consisted of five 440 N LAM engines and eight 100 N RCS thrusters. The Phase-II test series included the full configuration of five 440 N LAM engines and 16 100 N RCS thrusters.

With the successful completion of the hot test, the SMPS demonstrated its performance in full configuration. Going forward, ISRO has scheduled five additional tests to demonstrate nominal and off-nominal mission scenarios, strengthening the rigor of the test.

The Gaganyaan project envisages demonstrating human spaceflight capability by launching a crew of three members into a 400 km orbit for a three-day mission and returning them safely to Earth by landing in Indian waters.

ISRO plans to execute Gaganyaan first abortion test in August.