New Delhi, May 26 -- AnduraX, an Andhra Pradesh-based space technology startup building reusable re-entry vehicles, is preparing to conduct what it claims will be India's first high-altitude balloon drop test for a privately developed reusable spaceplane system.

The startup said the test mission, designated ADM-01 (ARES Drop Mission 1), is scheduled for the first week of June 2026. The experimental vehicle will be lifted to an altitude of 25,000 metres using a high-altitude balloon before being released under near-stratospheric conditions. The exercise is aimed at validating flight behaviour, precision landing systems, and the company's Guidance, Navigation, and Control (GNC) architecture.

The company is developing ARES, a reusable re-e...