Thomas J. Kelly (aerospace engineer)
Thomas J. Kelly had just turned 40 when ice formed in a fuel line on the spacecraft he had built. It was the 20th of July, 1969. Neil Armstrong had stepped onto the Moon inside the Lunar Module, and a clog in the fuel system had the potential to cause a detonation. The problem corrected itself. But Kelly later developed a nervous tic during the project. NASA would give him a title that captured his role precisely: the Father of the Lunar Module. How does an engineer earn a name like that, and what did it take to get there?
Kelly was born in Brooklyn, New York, on the 14th of June, 1929, and raised in Merrick, New York. In his local neighborhood, parents held their children to a specific standard. "Tom would never get a C, study harder," they would say, using Kelly as the benchmark. As a child at what is now called Camp Avenue school in North Merrick, he was remembered as likeable and popular, never showing arrogance despite his abilities.
At Wellington C. Mepham High School, Kelly was known for his genial nature and impish smile. He played the trumpet and aced every test, and he graduated as valedictorian. In 1946, a Grumman scholarship took him to Cornell University. He spent his summers working at Grumman and earned a bachelor's degree in mechanical engineering, along with a Reserve Officers' Training Corps commission, in 1951. He was also a member of the Quill and Dagger society at Cornell. He later added a master's degree from Columbia University and a Ph.D. from the Polytechnic Institute of Brooklyn. His career would pass through air force bases, a defense contractor, and eventually the Moon.
Kelly arrived at Grumman full-time in 1951 as a propulsion engineer on the Rigel Missile Program. He moved from there to the F-11 Tiger program, where he was promoted to group leader. In 1956, the Air Force called him to active duty at Wright-Patterson Air Force Base in Dayton, Ohio. Kelly worked as a performance engineer on the B-58 Hustler, the F-105 Thunderchief, and the AGM-28 Hound Dog. He was discharged in 1958.
After his discharge, Kelly briefly led rocket propulsion development engineering at Lockheed Corporation's missile and space division, staying until 1959. He then returned to Grumman as assistant chief of propulsion. Within a year, he moved into work on Grumman's proposals for the Apollo program and the Lunar Module. During that period, Kelly helped develop the concept of lunar orbit rendezvous. The idea called for a separate lander to descend to the Moon's surface while a command module remained in orbit above. In late 1962, Grumman won the $2-billion NASA contract that would turn that concept into hardware.
Kelly was placed at the head of the design team for what NASA initially called the Lunar Excursion Module. He was responsible for more than 7,000 employees in the design and construction effort. His team devised the spacecraft as two stages. A descent stage would lower two astronauts to the lunar surface. An ascent stage would then carry them back up to rejoin the command module waiting in orbit. A third astronaut remained in lunar orbit throughout each mission.
Grumman built fifteen lunar modules in total, each incorporating significant upgrades over its predecessor. Only six of them landed on the Moon's surface. Kelly served as project engineer, engineering manager, and deputy program manager for the full span of the program, from 1962 to 1970. In a 1998 interview, Kelly reflected on the landing. "It was the greatest thing in my career. And, in hindsight, it was even more significant than we thought at the time."
Kelly retired from Grumman in 1992, after thirty-eight years with the company. Shortly after, Grumman merged with Northrop to form Northrop Grumman Corporation, and operations dispersed from Long Island. In a 2000 poll called Long Island: Our Past, residents chose their favorite figures from the island's history. Kelly placed fourth, behind Robert Moses, Theodore Roosevelt, and William Levitt.
He published Moon Lander: How We Developed the Apollo Lunar Module in 2001. Matt Craven had portrayed him in the 1998 television miniseries From the Earth to the Moon. Kelly died on the 23rd of March, 2002. The spacecraft he built remains the only one ever used by humans to land on another celestial body.
Continue browsing
Updated
Common questions
Why is Thomas J. Kelly called the Father of the Lunar Module?
NASA gave Kelly that title because he led Grumman's design and construction of the Apollo Lunar Module. He served as project engineer, engineering manager, and deputy program manager from 1962 to 1970, overseeing more than 7,000 employees in the effort.
What was the two-stage design that Thomas J. Kelly's team developed for the Lunar Module?
Kelly's team devised the Lunar Module as two separate stages. A descent stage lowered two astronauts to the lunar surface, while an ascent stage carried them back up to rejoin the command module in orbit; a third astronaut remained in lunar orbit throughout each mission.
How many Apollo lunar modules did Grumman build?
Grumman built fifteen lunar modules in total. Each incorporated significant upgrades over its predecessor, but only six of the fifteen actually landed on the Moon's surface.
What book did Thomas J. Kelly write about the Apollo Lunar Module?
Kelly published Moon Lander: How We Developed the Apollo Lunar Module in 2001. The book documents the process of designing, building, and flying the Lunar Module.
Who portrayed Thomas J. Kelly in the television miniseries From the Earth to the Moon?
Matt Craven portrayed Thomas J. Kelly in the 1998 television miniseries From the Earth to the Moon.
Where did Thomas J. Kelly rank in the Long Island: Our Past poll?
Kelly placed fourth in the 2000 Long Island: Our Past poll of favorite figures from the island's history. He ranked behind Robert Moses, Theodore Roosevelt, and William Levitt.
All sources
6 references cited across the entry