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RLV-TD is the first unmanned flying testbed being developed for the Indian Space Research Organisation (ISRO)’s Reusable Launch Vehicle Technology Demonstration Programme. It is a scaled down prototype of an eventual two-stage-to-orbit (TSTO) reusable launch vehicle.

The RLV-TD successfully completed its first test flight on 23 May 2016, which lasted for 770 seconds and reached a maximum altitude of . It is designed to evaluate various technologies, and development of the final version is expected to take 10 to 15 years. The fully developed RLV is expected to take off vertically like a rocket, deploy a satellite in orbit, return to Earth, and land on a runway.