The Advanced Technology Vehicle (ATV) is a light rocket developed by ISRO to carry payloads of 200-400 kg to altitudes of up to 800 km. It provides an excellent platform for upper atmospheric research and microgravity experiments. ISRO's first ATV test flight in 2010 was a success, carrying a passive scramjet engine to Mach 6. The next ATV flight will actively test ISRO's scramjet engine. As of 2014, ISRO had completed mission specifications and hardware development for the second ATV flight to demonstrate the active scramjet engine.