August 26, 2025
First Integrated Air Drop Test (IADT-01)
Why in the News?
ISRO carried out its maiden Integrated Air Drop Test (IADT-01) at Sri harikota.
- This marks an important step in the Gaganyaan mission, which aims to send Indians to space aboard an indigenously developed spacecraft.
Key Highlights: First Integrated Air Drop Test (IADT-01)
IADT-01 (Integrated Air Drop Test)
- Conducted at Sriharikota.
- The parachute system for slowing down the crew module, essential for ensuring astronauts’ safe landing, was successfully tested.
- VSSC (Vikram Sarabhai Space Centre) led the effort, responsible for 90% of the activities, along with Human Space Flight Centre (HSFC), SDSC-SHAR, and the Indian Air Force.

Next Steps in Gaganyaan Programme
TV-D2 (Test Vehicle Mission – 2):
- Will test the Crew Escape System (CES) under critical conditions.
- Follows the success of TV-D1 in October 2023.
Uncrewed G1 Mission:
- Spacecraft will be launched on a human-rated LVM3 rocket.
- It will transport Vyom Mitra, a humanoid robot created by ISRO.
- A rehearsal before sending human astronauts.
Role of VSSC
- Designed and modelled the parachute deceleration system.
- Played a major role in IADT-01, ensuring end-to-end validation.
Significance of the Development
- Ensures astronaut safety, which is paramount in manned missions.
- Validates critical systems like crew module recovery and escape mechanisms.
- Puts India closer to achieving its first human spaceflight (expected around 2025–26).
Strengthens India’s position in the elite group of human spacefaring nations (currently only USA, Russia, China).