The Crew Module (CM) is the pressurized, habitable component of the Gaganyaan spacecraft, designed by ISRO to transport up to three Indian astronauts (Gaganauts) to a Low Earth Orbit (LEO) of approximately 400 km. It functions as the primary living space and command center during the mission.
Origin and Purpose Formally announced on August 15, 2018, the Gaganyaan program is managed by the Department of Space. The CM was developed to demonstrate indigenous human spaceflight capability, making India the fourth nation to do so. The first major demonstration of its recovery systems occurred during the TV-D1 (Test Vehicle Abort Mission-1) on October 21, 2023.
Key Features
- Structure: A double-walled metallic pressure vessel designed to withstand re-entry temperatures exceeding 2,000°C using an ablative thermal protection system.
- ECLSS: It houses the Environmental Control and Life Support System, which regulates oxygen, removes carbon dioxide, and maintains pressure and humidity.
- Safety: It is integrated with a Crew Escape System (CES), a high-thrust solid rocket motor assembly that pulls the CM away from the launch vehicle in case of an emergency during the ascent.
- Recovery: It utilizes a multi-stage parachute system (including drogue and main parachutes) to ensure a safe splashdown velocity in the Indian Ocean.
UPSC Significance Categorized under GS Paper III (Science and Technology - Space), this topic is essential for understanding India’s strategic autonomy and technological advancement. It is relevant for Prelims regarding technical specifications and for Mains regarding the socio-economic and geopolitical impacts of the Indian Human Spaceflight Programme (IHSP).
Related Concepts The CM is part of the Orbital Module, which includes the unpressurized Service Module (SM). It is launched by the LVM3 (Launch Vehicle Mark-3). Related developments include Vyommitra (a humanoid robot for uncrewed missions) and the Gaganyaan Service Module Propulsion System.