Uncrewed Atmospheric Reentry Test Vehicles

A class of uncrewed spacecraft flown specifically to validate atmospheric reentry technology and vehicle design ahead of a later crewed or operational mission, rather than to carry out a primary science or communications objective of their own. The European Space Agency's Atmospheric Reentry Demonstrator flew a single suborbital mission on an Ariane 5 in October 1998 to test heat shield and reentry aerodynamics for a future European reentry vehicle concept. The Indian Space Research Organisation's Crew Module Atmospheric Re-entry Experiment, launched in December 2014 on a test flight of the LVM3 rocket, similarly validated reentry and splashdown performance for the crew module design that would later be developed into ISRO's Gaganyaan human spaceflight program. Both vehicles were built as capsule shaped test articles rather than production spacecraft, flew only once each, and existed to retire reentry risk for a national spaceflight effort still in development, distinguishing them from operational crewed capsules and from expendable science probes.