For which major Indian program is the thermal research at ATSRC mentioned as being potentially critical for security?

Answer

Gaganyaan human spaceflight programme

Thermal management is described as a life-critical area for the Gaganyaan programme, particularly concerning the thermal protection systems (TPS) needed during high-speed atmospheric re-entry.

For which major Indian program is the thermal research at ATSRC mentioned as being potentially critical for security?
SpaceorganizationISROresearchcentre