Space Test Experiments Platform 2 (STEP-2)
Pegasus HAPS
Orbital Sciences Corporation
Location
Edwards Air Force Base
Air launch to orbit
Edwards Air Force Base has witnessed the launch of 5 rockets, including 5 orbital launch attempts. While Air launch to orbit, has been the site for 51 rocket launches.
Rocket
Orbital Sciences Corporation Pegasus HAPS
The Pegasus is an air-launched rocket developed by Orbital Sciences Corporation (now part of Northrop Grumman Innovation Systems). Capable of carrying small payloads of up to 443 kilograms (977 lb) into low Earth orbit, the vehicle consists of three solid propellant stages and an optional monopropellant fourth stage. Pegasus is released from its carrier aircraft at approximately 40,000 ft (12,000 m), and its first stage has a wing and a tail to provide lift and attitude control while in the atmosphere.
The HAPS variant adds a Hydrazine Auxiliary Propulsion System maneuvering stage.
