Joseph Albert Walker
Born: 20 February 1921, Washington, Pennsylvania, United States
Nationality: American
Died: 8 June 1966 (Aircraft accident)
Group: Man In Space Soonest (25 June 1958)
Status: Deceased
| USAF (Non-FAI) Flights: | |||
| 1 | X-15 Flight #77 | 17 January 1963 | 9 minutes, 44 seconds |
| FAI Flights: | |||
| 1 | X-15 Flight #90 | 19 July 1963 | 11 minutes, 25 seconds |
| 2 | X-15 Flight #91 | 22 August 1963 | 11 minutes, 9 seconds |
| Non-Qualifying Flights with Significance: | ||
| X-15 Flight #9 | 25 March 1960 | 9 minutes, 8 seconds |
| X-15 Flight #13 | 19 April 1960 | 9 minutes, 59 seconds |
| X-15 Flight #15 | 25 May 1960 | 10 minutes, 10 seconds |
| X-15 Flight #18 | 4 August 1960 | 10 minutes, 23 seconds |
| X-15 Flight #20 | 19 August 1960 | 9 minutes, 42 seconds |
| X-15 Flight #35 | 30 March 1961 | 10 minutes, 16 seconds |
| X-15 Flight #37 | 25 May 1961 | 12 minutes, 8 seconds |
| X-15 Flight #40 | 12 September 1961 | 8 minutes, 44 seconds |
| X-15 Flight #44 | 17 October 1961 | 10 minutes, 12 seconds |
| X-15 Flight #50 | 20 April 1962 | 8 minutes, 59 seconds |
| X-15 Flight #52 | 30 April 1962 | 9 minutes, 46 seconds |
| X-15 Flight #56 | 7 June 1962 | 8 minutes, 24 seconds |
| X-15 Flight #59 | 27 June 1962 | 9 minutes, 32 seconds |
| X-15 Flight #61 | 16 July 1962 | 9 minutes, 38 seconds |
| X-15 Flight #65 | 2 August 1962 | 9 minutes, 14 seconds |
| X-15 Flight #67 | 14 August 1962 | 9 minutes, 5 seconds |
| X-15 Flight #76 | 20 December 1962 | 8 minutes, 54 seconds |
| X-15 Flight #79 | 18 April 1963 | 7 minutes, 13 seconds |
| X-15 Flight #81 | 2 May 1963 | 9 minutes, 17 seconds |
| X-15 Flight #84 | 29 May 1963 | 11 minutes, 48 seconds |
| X-15 Flight #86 | 25 June 1963 | 9 minutes, 59 seconds |
| X-15 Flight #88 | 9 July 1963 | 8 minutes, 58 seconds |
Walker piloted 25 of the 199 X-15 flights. He was killed when his F-104 chase plane collided with an XB-70 bomber. Walker was the only X-15 pilot to achieve FAI definition astronaut status in the X-15. (Joe Engle achieved this status in the space shuttle, not the X-15).
