Title: Two Photographs of John C. Houbolt.
Publisher: ND, N.P.
The two black & white photographs are in Fine condition and both are signed by Houbolt. John Cornelius Houbolt (born 1919) is credited with having effectively promoted the lunar mission mode called Lunar Orbit Rendezvous or LOR. This flight path was eventually endorsed by Wernher von Braun in June 1961 and was chosen for the Apollo program in early 1962. This critical decision was viewed as vital to ensuring that Man would reach and return from the Moon in the 1960's, Although the basics of the LOR concept had been expressed as early as 1923 by German rocket pioneer Hermann Oberth, no one had recognized the fundamental significance of LOR until just a few years before President Kennedy's decision to land a man on the Moon. Some engineers were averse to the maneuver being done in lunar orbit, where there would be no fallback options in case of a major mishap. Houbolt was an engineer at the Langley Research Center in Hampton, Virginia, and he was one of the most vocal of a minority of engineers who supported LOR and his campaign in 1961 and 1962. Once this mode was chosen in 1962, many other aspects of the mission were significantly based on this fundamental design decision."The most important [aspect of the mission]," said Houbolt, "was the decision to use LOR. Without that decision, I firmly believe we still would not be on the moon. " When Wernher von Braun endorsed "lunar-orbit rendezvous" (LOR) as the mode for landing on the Moon, the decision became one of the most critical dates in the Apollo program. It effectively ended a months-long, divisive debate inside NASA over LOR versus "earth-orbit rendezvous" (EOR) versus "direct ascent" (a single huge rocket to launch a lander directly at the Moon, with no rendezvous). Bookseller Inventory # 25688
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