Jim Chamberlin

James Arthur Chamberlin (May 23, 1915 – March 8, 1981) was a Canadian engineer who contributed to the design of the Canadian Avro Arrow, NASA's Gemini spacecraft and the Apollo program. In addition to his pioneering air and space efforts, he is often cited as an example of Canadian brain drain to the U.S. In the early 1960s, he was one of the key people that proposed and moved that Lunar Orbit Rendezvous (LOR) was the best option for landing a crew on the Moon, the method eventually used on Apollo lunar landing missions. He left NASA in 1970 and worked for McDonnell Douglas, in their Houston offices, until his death in 1981.

Early life Chamberlin was born in Kamloops, British Columbia on May 23, 1915, the son of Walter A. Chamberlin and Theresa Goldie. His father was an English-born architect, who was killed at the Battle of Vimy Ridge while serving with the Royal Regiment of Canadian Artillery. His mother, a sister of William Goldie, moved to Toronto following her husband's death and was later remarried. Chamberlin subsequently attended high school at the University of Toronto Schools. Having maintained a keen interest in aircraft from a young age, he built original design model airplanes in his adolescent years, at one point winning a model aircraft contest organized by The Mail and Empire. Chamberlin later took mechanical engineering degrees at the University of Toronto (1936) and Imperial College London (1939). According to Canada's Aviation Hall of Fame, it was under Chamberlin's leadership that the Arrow's technical design team conducted engineering research and applied development techniques that were "a generation or more ahead of those used by other aircraft companies" at the time.

As head of engineering for Project Mercury, chief designer and NASA's first Project Manager for the Gemini spacecraft built by McDonnell Aircraft, and then troubleshooter on Apollo, Chamberlin played an instrumental role in creating and implementing the first three generations of American crewed spacecraft.

Chamberlin was described by space historian David Baker as "probably one of the most brilliant men ever to work for NASA." Chamberlin left NASA in 1970 to join McDonnell Douglas Astronautics, where he prepared an ultimately unsuccessful space shuttle bid before becoming technical director for the company's facility at the Johnson Space Center in Houston, a position he held until his death on March 8, 1981. He and his wife had a son and a daughter.

Honors NASA awarded Chamberlin its Exceptional Scientific Achievement, Exceptional Service and Exceptional Engineering Achievement medals. Chamberlin was a Professional Engineer of the Province of Ontario, a member of the Institute of Aeronautical Scientists and an Associate Fellow of the Canadian Aeronautical Institute. In 2001, he was inducted into Canada's Aviation Hall of Fame. In 2019, Canada Post issued stamps commemorating Canadian contributions to the Apollo 11 mission which included Chamberlin's likeness.

In the 1997 CBC miniseries The Arrow, Chamberlin is played by actor Aidan Devine.