Rustom (English: Warrior) is a Medium Altitude Long Endurance unmanned combat air vehicle (UCAV) being developed by Defence Research and Development Organisation for the three services, Indian Army, Indian Navy and the Indian Air Force of the Indian Armed Forces. Rustom is derived from the NAL's LCRA (Light Canard Research Aircraft) developed by a team under the leadership of late Prof Rustom B Damania in the 1980s. The UAV will have structural changes and a new engine.