ISRO completes Crew Module and Service Module separation tests for Gaganyaan

25 October 2026

ISRO has completed a series of Crew Module and Service Module separation tests for the Gaganyaan Programme. A test setup simulating the full Crew Module and Service Module assembly was built at the Vikram Sarabhai Space Centre, Thiruvananthapuram, with extensive instrumentation. The tests validated the design of the separation system and included cutting several umbilical connections between the two modules. Shock survivability was checked for avionics, inertial navigation, the thermal protection system, the deployable umbilical shield and pyrotechnic devices. Crew Module separation uses precisely sequenced pyrotechnic devices and jettisoning systems, and happens before re-entry. The results support the first uncrewed Gaganyaan mission, G1.