Onizuka
Onizuka
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Ellison Shoji Onizuka American Mission Specialist Astronaut. Born 24 June 1946. Died 28 January 1986. Died in Challenger accident.

Personal: Male, Married, Two children. Born in Kealakekua, Kona, Hawaii, USA. Challenger explosion.

Astronaut Career

Astronaut Group: NASA Group 8 - 1978. Deceased Entered space service: 16 January 1978. Left space service: 1986. Number of Flights: 2.00. Total Time: 3.07 days.

Official NASA Biography

Ellison S. Onizuka, was born in Kealakekua, Kona, Hawaii, on June 24, 1946, of Japanese-American parents. He attended the University of Colorado, receiving B.S. and M.S. degrees in engineering in June and December 1969, respectively. While at the university he married Lorna Leido Yoshida of Hawaii, and the couple eventually had two children. He also participated in the Air Force R.O.T.C. program, leading to a commission in January 1970. Onizuka served on active duty with the Air Force until January 1978 when he was selected as a NASA astronaut. With the Air Force in the early 1970s he was an aerospace flight test engineer at the Sacramento Air Logistics Center. After July 1975 he was assigned to the Air Force Flight Test Center at Edwards Air Force Base, California, as squadron flight test officer and later as chief of the engineering support section.

When Onizuka was selected for the astronaut corps he entered into a one year training program and then became eligible for assignment as a mission specialist on future Space Shuttle flights. He worked on orbiter test and checkout teams and launch support crews at the Kennedy Space Center for the first two Shuttle missions. Since he was an Air Force officer on detached duty with NASA, Onizuka was a logical choice to serve on the first dedicated Department of Defense classified mission. He was a mission specialist on STS-51-C, taking place 24-27 Jan. 1985 on the Discovery orbiter. The Challenger flight on which he was killed was his second Shuttle mission.


Onizuka Spaceflight Log

  • 24 January 1985 Flight: STS-51-C. Flight Up: STS-51-C. Flight Back: STS-51-C. Flight Time: 3.06 days.
  • 28 January 1986 Flight: STS-51-L. Flight Up: STS-51-L. Flight Back: STS-51-L. Flight Time: 0.0008 days.

Onizuka Chronology

16 January 1978 - NASA Astronaut Training Group 8 selected.. The group was selected to provide pilot, engineer, and scientist astronauts for space shuttle flights. Recruit women and minorities to introduce diversity into the astronaut corps. Qualifications: Pilots: Bachelor's degree in engineering, biological science, physical science or mathematics. Advanced degree desirable. At least 1,000 flight-hours of pilot-in-command time. Flight test experience desirable. Excellent health. Vision minimum 20/50 uncorrected, correctable to 20/20 vision; maximum sitting blood pressure 140/90. Height between 163 and 193 cm.

Mission Specialists: Bachelor's degree in engineering, biological science, physical science or mathematics and minimum three years of related experience or an advanced degree. Vision minimum 20/150 uncorrected, correctable to 20/20. Maximum sitting blood pressure of 140/90. Height between 150 and 193 cm.. 8,079 applicants, of which half met the basic qualifications. 208 invited for physical tests and interviews. Of the 35 selected, six were women, three were male African-Americans, and one was a male Asian-American.


1983 November - STS-10 (cancelled). Assignment: Proposed Prime Crew. Flight: STS-10. Planned Department of Defense shuttle mission. Cancelled due to payload delays.
1984 July - STS-41-E (cancelled). Assignment: Proposed Prime Crew. Flight: STS-41-E. Planned Department of Defense shuttle mission. Cancelled due to IUS failure.
24 January 1985 - STS-51-C. Assignment: Prime Crew. Flight: STS-51-C. Manned five crew. Deployed USA 8 (Aquacade ELINT spacecraft). Orbits of Earth: 48. Landed at: Runway 15 at Kennedy Space Center, Florida. Landing Speed: 342 kph. Touchdown miss distance: 839.00 m. Landing Rollout: 2,240.00 m. Payloads: Department of Defence classified payloads.
27 January 1985 - Landing of STS-51-C. Assignment: Return Crew. Flight: STS-51-C. STS-51-C landed at 21:28 GMT.
28 January 1986 - STS-51-L. Assignment: Prime Crew. Flight: STS-51-L. Exploded 73 seconds after launch, all 7 crewmembers were killed; carried TDRSS satellite.

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