| Joseph Albert "Joe" Walker | |
|---|---|
| USAF/NASA Test Pilot | |
| Nationality | American |
| Status | Deceased |
| Born | February 20, 1921 Washington, Pennsylvania |
| Died | June 8, 1966 (aged 45) near Barstow, California |
| Other occupation | Experimental physicist |
| Rank | Captain, U.S. Army Air Forces |
| Time in space | 22 minutes |
| Selection | 1958 USAF Man In Space Soonest group |
| Missions | X-15 Flight 90, X-15 Flight 91 |
Joseph Albert "Joe" Walker (20 February 1921 – 8 June 1966) was an American NASA test pilot, and member of the U.S. Air Force Man In Space Soonest program. In 1963, he made two X-15 Experimental rocket aircraft flights beyond the altitude of 100 kilometers - at the edge of outer space. These were the only powered spaceplane flights past that threshold until the flight of SpaceShipOne in 2004. These flights qualified him as an astronaut under both the rules of the U.S. Air Force and of the Fédération Aéronautique Internationale (FAI). Joe Walker was the first man to fly into outer space on two different occasions.
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Born in Washington, Pennsylvania, Walker graduated from the Trinity High School. He earned his bachelor's degree in physics from the Washington and Jefferson College before entering the U.S. Army Air Forces.
During World War II, Walker flew the Lockheed P-38 Lightning fighter and F-5A photo aircraft (a modified P-38) on weather reconnaissance flights. Walker earned the Distinguished Flying Cross once, awarded by General Nathan Twining in July 1944 and the Air Medal with seven oak leaf clusters.
After World War II, Walker retired from the Air Force and joined the National Advisory Committee for Aeronautics (NACA) Aircraft Engine Research Laboratory in Cleveland, Ohio, as an experimental physicist. While in Cleveland, Walker became a test pilot, and he conducted icing research in flight, as well as in the NACA icing wind tunnel. He transferred to the High-Speed Flight Research Station in Edwards, California, in 1951.
Walker served for 15 years at the Edwards Flight Research Facility - now called the Dryden Flight Research Center. By the mid-1950s, he was a Chief Research Pilot. Walker worked on several pioneering research projects. He flew in three versions of the Bell X-1: the X-1#2 (two flights, first on 27 August 1951), X-1A (one flight), X-1E (21 flights). When Walker attempted a second flight in the X-1A on 8 August 1955, the rocket aircraft was damaged in an explosion just before being launched from the JTB-29A mothership. Walker was unhurt, though, and he climbed back into the mothership with the X-1A subsequently jettisoned.
Other research aircraft that he flew were the Douglas D-558-I Skystreak #3 (14 flights), Douglas D-558-II Skyrocket #2 (three flights), D-558-II #3 (two flights), Douglas X-3 Stiletto (20 flights), Northrop X-4 Bantam (two flights), and Bell X-5 (78 flights).
Walker was the chief project pilot for the X-3 program. Walker reportedly considered the X-3 to be the worst airplane that he ever flew. In addition to research aircraft, Walker flew many chase planes during test flights of other aircraft, and he also flew in programs that involved the North American F-100 Super Sabre, McDonnell F-101 Voodoo, Convair F-102 Delta Dagger, Lockheed F-104 Starfighter and Boeing B-47 Stratojet.
In 1958, Walker was one of the pilots selected for the Air Force's Man In Space Soonest (MISS) project, but that project never came to fruition. That same year, NACA became the National Aeronautics and Space Administration (NASA), and in 1960, Walker became the first NASA pilot to fly the X-15, and the second X-15 pilot, following Scott Crossfield, the manufacturer's test pilot. On his first X-15 flight, Walker did not realize how much power that its rocket engines had, and he was crushed backward into the pilot's seat, screaming, "Oh, my God!". Then, a flight controller jokingly replied "Yes? You called?" Walker would go on to fly the X-15 24 times, including the only two flights that exceeded 100 kilometers (62.2 miles) in altitude, Flight 90 (on 19 July 1963: 106 km) and Flight 91 (on 22 August 1963: 108 km).
Walker was the first American civilian to make any spaceflight,[1] and the second civilian overall, preceded only by the Soviet Union's cosmonaut, Valentina Tereshkova[2] one month earlier, and Walker became the first human being, civilian or not to fly into outer space on two occasions.
Walker flew at the fastest speed in the X-15A-1: 4,104 mph (Mach 5.92) during a flight on 27 June 1962 (the fastest flight in any of the three X-15s was about 4,520 mph (Mach 6.7) flown by William J. Knight in 1967).
Walker also became the first test pilot of the Bell Lunar Landing Research Vehicle (LLRV), which was used to develop piloting and operational techniques for lunar landings. On 30 October 1964, Walker took the LLRV on its maiden flight, reaching an altitude of about 10 ft and a total flight time of just under one minute. He piloted 35 LLRV flights in total. Neil Armstrong later flew this craft many times in preparation for the spaceflight of Apollo 11 - the first manned landing on the Moon - including crashing it once and barely escaping from it with his ejection seat.
Walker was killed on 8 June 1966, when his F-104 Starfighter chase aircraft collided with a North American XB-70 Valkyrie. Walker had been flying in a tight group formation for a publicity photo, and his F-104 drifted into contact with the XB-70's right wingtip, flipped over, and rolling inverted, passed over the top of the XB-70, struck the vertical stabilizers and left wing and exploded, destroying the Valkyrie's rudders and damaging its left wing. [N 1] The careers of several Air Force colonels ended as a result of this aviation accident.[4]
Walker was a charter member and one of the first Fellows of the Society of Experimental Test Pilots. He received the Robert J. Collier Trophy, the Harmon International Trophy for Aviators, the Iven C. Kincheloe Award, and the Octave Chanute Award. His alma mater awarded him an honorary Doctor of Aeronautical Sciences degree in 1961. The National Pilots Association named him the Pilot of the Year in 1963.
Walker was inducted into the Aerospace Walk of Honor in 1991, and the International Space Hall of Fame in 1995. Joe Walker Middle School in Quartz Hill, California, is named in his honor as well as the Joe Walker Elementary School in Lagonda, Pennsylvania.
On 23 August 2005, NASA officially conferred on Walker his astronaut's wings, posthumously.[5]