Understanding the Mechanics and Importance of ISRO’s Gaganyaan Crew Escape System (CES)

ISRO's Gaganyaan mission, which aims to send Indian astronauts to low-earth orbit, incorporates a vital Crew Escape System (CES). The CES is designed to rapidly separate the crew module from the LVM3 launch vehicle in case of a malfunction during the atmospheric phase of flight. There are two types of CES: puller type (used in Gaganyaan) and pusher type (used by SpaceX). ISRO has successfully tested the CES using a cost-effective Test Vehicle (TV-D1) powered by a Vikas engine. The system ensures astronaut safety by moving the module to a safe distance before a parachute-assisted splashdown in the sea.

Key Points

  • The Crew Escape System (CES) is critical during the atmospheric phase where the rocket faces high structural loads.
  • Gaganyaan uses a 'puller type' CES that pulls the crew module away from the launch vehicle.
  • The Test Vehicle (TV-D1) validated the system under transonic conditions in October 2023.
  • The Integrated Vehicle Health Management system monitors parameters to decide when to activate the CES.

Exam Facts

  • Mission name: Gaganyaan
  • Launch vehicle: LVM3 (HLVM3)
  • Test vehicle: TV-D1
  • Engine used for test: Vikas engine

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All current affairs of 15 October 2025