Tham khảo Tiếp cận và hạ cánh thử nghiệm tàu con thoi

  1. 1 2 "Real life 'Enterprise' ready for space". Eugene Register-Guard. Associated Press. September 18, 1976. p. 3A.
  2. ↑ "Space shuttle rocket plane to fly soon". Sarasota Herald-Tribune. UPI. September 12, 1976. p. 11A.
  3. 1 2 Space Shuttle Approach and Landing Tests Fact Sheet From "Space Shuttle Chronology"; Accessed 11/03/08
  4. ↑ "Space flight milestone to be reached in July". Sarasota Herald-Tribune. (Washington Post / L.A. Times). April 11, 1977. p. 13A.
  5. ↑ "Shuttle's maiden solo flight Friday". Beaver County Times. UPI. August 11, 1977. p. A2.
  6. ↑ "Space Shuttle solo is soaring success". Milwaukee Sentinel. (Los Angeles Times). August 13, 1977. p. 3, part 1.
  7. 1 2 NASA – Dryden Flight Research Center (1977). “Shuttle Enterprise Free Flight”. NASA. Truy cập ngày 28 tháng 11 năm 2007. 
  8. ↑ "Test bumpy, but shuttle lands safely". Free Lance-Star. Fredericksburg, Virginia. Associated Press. October 27, 1977. p. 15.
  9. ↑ "Space shuttle landing rough". Lodi News-Sentinel. UPI. October 27, 1977. p. 22.
  10. ↑ "Joe H. Engle", NASA Johnson Space Center Oral History Project, June 3, 2004.
  11. ↑ Astronautix.com Accessed 11/03/08

Tài liệu tham khảo

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