John Houbolt made vital contributions to Apollo moon landing

NASA engineer John Houbolt, who passed away last Tuesday, convinced the space agency to develop a module that would carry the Apollo crew to the moon from lunar orbit. 

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    John C. Houbolt explains the size of different rockets required to launch various methods for landing on the moon at Grainger Engineering Library in Urbana, Ill., in 2003.
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John C. Houbolt, an engineer whose contributions to the U.S. space program were vital to NASA's successful moon landing in 1969, has died. He was 95.

Houbolt died Tuesday at a nursing home in Maine, his son-in-law Tucker Withington confirmed Saturday.

As NASA describes on its website, while under pressure during the U.S.-Soviet space race, Houbolt was the catalyst in securing U.S. commitment to the science and engineering theory that eventually carried the Apollo crew to the moon and back safely.

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His efforts in the early 1960s are largely credited with convincing NASA to focus on the launch of a module carrying a crew from lunar orbit, rather than a rocket from Earth or a spacecraft while orbiting the planet.

Houbolt argued that a lunar orbit rendezvous, or lor, would not only be less mechanically and financially onerous than building a huge rocket to take man to the moon or launching a craft while orbiting the Earth, but it also was the only option to meet President John F. Kennedy's challenge before the end of the decade.

NASA describes "the bold step of skipping proper channels" that Houbolt took by pushing the issue in a private letter in 1961 to an incoming administrator.

"Do we want to go to the moon or not?" Houbolt asks. "... why is a much less grandiose scheme involving rendezvous ostracized or put on the defensive? I fully realize that contacting you in this manner is somewhat unorthodox, but the issues at stake are crucial enough to us all that an unusual course is warranted."

Houbolt started his career with NASA's predecessor in 1942, served in the Army Corps of Engineers and worked in an aeronautical research and consulting firm before returning to NASA in 1976 as chief aeronautical scientist. He retired in 1985 but continued private consulting work.

Houbolt earned degrees in civil engineering from the University of Illinois at Urbana-Champaign. He earned a doctorate from the Swiss Federal Institute of Technology at Zurich in 1957.

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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