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Inflatable Aerodynamic Decelerator
ISRO has successfully demonstrated a novel technology with the Inflatable Aerodynamic Decelerator (IAD), which it describes as a game-changer with multiple potentials for future missions.
An IAD built and developed by the Vikram Sarabhai Space Centre (VSSC) was successfully flight-tested aboard a Rohini-sounding rocket launched from Thumba Equatorial Rocket Launching Station (TERLS).
IAD, or Inflatable Aerodynamic Decelerator, is a method for atmospheric entry payloads.
The inflatable aerodynamic decelerator is comprised of an envelope and an inflatant (anything that inflates the envelope, such as air or helium).
As the lander enters the atmosphere, it inflates like a balloon and slows down.
The inflatant is intended to inflate the envelope to the point that it surrounds the payload intended to enter the atmosphere of a planet or satellite and creates aerodynamic forces to slow it down.
The IAD has enormous potential in numerous space applications, including —
- Recovery of expended rocket stage,
- In order to land payloads on Mars or Venus and
- In the construction of space habitats for human space flight missions.