Avatar (Sanskrit: अवतार, romanized: avatāra; from "Aerobic Vehicle for Transatmospheric Hypersonic Aerospace TrAnspoRtation") is a concept study for a robotic single-stage reusable spaceplane capable of horizontal takeoff and landing, by India's Defence Research and Development Organisation. The mission concept is for low cost military and commercial satellite space launches. This spaceplane concept is unrelated to India's RLV Technology Demonstration Programme (RLV-TD).