Flight 91X-15United States Air Force Launch Status Success Thu · Aug 22nd, 1963 2:05 PM EDT Crew Joseph A. Walker PilotStatus: Deceased 2/20/1921 - 6/8/1966 Nationality: American Type: Government First Flight: 7/19/1963 Last Flight: 8/22/1963Joseph Albert Walker was an American World War II pilot, experimental physicist, NASA test pilot, and astronaut. He was one of twelve pilots who flew the North American X-15, an experimental spaceplane jointly operated by the Air Force and NASA. MissionFlight 91Type: Test FlightX-15 Flight 91 was a 1963 American crewed mission, and the second and final flight in the program to achieve sub-orbital spaceflight—a flight over 100 km in altitude. It was the highest flight of the X-15 program. LocationEdwards Air Force BaseAir launch to Suborbital flight2 rockets have launched from Air launch to Suborbital flight. RocketNorth American X-15Length: 15.47 meters Diameter: 6.61 meters First Launch: June 8, 1959The North American X-15 was a hypersonic rocket-powered aircraft operated by the United States Air Force and the National Aeronautics and Space Administration as part of the X-plane series of experimental aircraft.The North American X-15 rocket has been launched a total of 2 times with 2 successful and 0 failed launches. AgencyUnited States Air ForceType: Government Abbreviation: USAFCountry: USA View Rocket Launch Schedule