 From 1963 to 1976, he worked for a consulting firm, Aeronautics Research Associates, then returned to NASA until retirement in 1985.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 in a campaign that lasted from 1960 to 1962.Once this mode was chosen in 1962, many other aspects of the mission were significantly based on this fundamental design decision.