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Ranger program: Difference between revisions





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[[Image:Ranger7 PIA02975.jpg|thumb|200px|right|First image of the Moon returned by a Ranger mission (Ranger 7 in 1964)]]The '''Ranger program''' was a series of [[unmanned space mission]]s by the [[United States]] in the 1960s whose objective was to obtain the first close-up images of the surface of the [[Moon]]. The Ranger spacecraft were designed to take images of the lunar surface, transmitting those images to Earth until the spacecraft were destroyed upon impact. A series of mishaps, however, led to the failure of the first six flights. At one point, the program was called "shoot and hope".<ref>[http://www.jsc.nasa.gov/history/oral_histories/CortrightEM/EMC_8-20-98.pdf Cortright Oral History (p25)]</ref> Congress launched an investigation into “problems of management” at [[NASA]] Headquarters and [[JPL|Jet Propulsion Laboratory]].<ref>{{cite web|last=Dick|first=Steven J.|title=NASA's First 50 Years: Historical Perspectives|url=http://hdl.handle.net/2060/20100025873|work=NASA History|publisher=NASA Technical Reports Server|accessdate=21 September 2011|page=12}}</ref> After two reorganizations of the agencies,{{citation needed|date=October 2012}} [[Ranger 7]] successfully returned images in July 1964, followed by two more successful missions.
 
Ranger was originally designed, beginning in 1959, in three distinct phases, called "blocks". Each block had different mission objectives and progressively more advanced system design. The [[JPL]] mission designers planned multiple launches in each block, to maximize the engineering experience and scientific value of the mission and to assure at least one successful flight. Total research, development, launch, and support costs for the Ranger series of spacecraft (Rangers 1 through 9) was approximately $170 million (equivalent to ${{Inflation|US|170|1965|r=2}}&nbsp;million in {{Inflation-year|US}}).
 
==Ranger spacecraft==

Retrieved from "https://en.wikipedia.org/wiki/Ranger_program"
 




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