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Context:
The Indian Space Research Organisation (ISRO) has successfully completed the Integrated Air Drop Test (IADT-01) to validate the parachute-based recovery system of the Gaganyaan crew module, a crucial milestone in India’s first human spaceflight programme.
ISRO Integrated Air Drop Test (IADT-01)
What it is?
- A specialised air-drop test to validate the end-to-end parachute recovery system of the Gaganyaan crew module.
- Conducted using a dummy crew capsule (~5 tonnes) dropped from an Indian Air Force Chinook helicopter.
- Developed by: Indian Space Research Organisation (ISRO).
Aim
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- To demonstrate the reliability and sequencing of parachutes required to slow and stabilise the crew module during re-entry and splashdown.
- To ensure astronaut safety during the descent and landing phases, the most critical stage of human spaceflight.
How the IADT System Works?
- Air Drop Release:
- The dummy crew module is lifted to altitude by an IAF Chinook helicopter and released for free fall.
- Initial Deceleration – Drogue Parachutes:
- Two drogue parachutes deploy to stabilise the capsule and reduce tumbling.
- Trigger Mechanism – Pilot Chutes:
- Smaller pilot chutes deploy to activate the main parachutes.
- Final Deceleration – Main Parachutes:
- Three large main parachutes deploy sequentially to slow the module to splashdown speed.
- Redundancy built-in: Safe landing possible even if one parachute fails.
- Splashdown & Recovery:
- Capsule lands safely in water.
- Indian Navy & Coast Guard teams execute recovery operations.
