Donald Kent "Deke" Slayton (March 1, 1924 – June 13, 1993) was an American Air Force pilot, aeronautical engineer, test pilot, and one of the original Mercury Seven astronauts. He went on to become NASA's first chief of the Astronaut Office and director of Flight Crew Operations, responsible for NASA crew assignments.
Slayton joined the U.S. Army Air Forces during World War II, and flew in the Europe and the Pacific theaters. He left the Army after World War II, went on to receive a Bachelor of Science degree in aeronautical engineering from University of Minnesota in 1949, and later joined the Minnesota Air National Guard after working for Boeing as an aeronautical engineer. He joined the United States Air Force, and attended the U.S. Air Force Test Pilot School in 1955. In 1959, he applied to, and was selected as one of the Mercury Seven, NASA's first class of astronauts. Slayton was scheduled to pilot the second U.S. crewed orbital spaceflight, but was grounded in 1962 by atrial fibrillation, an irregular heart rhythm. In March 1972, he was medically cleared to fly and was the docking module pilot of the 1975 Apollo–Soyuz Test Project (ASTP). Slayton continued to work at NASA until 1982. He also helped develop the Space Shuttle.
Slayton died from brain cancer on June 13, 1993, aged 69.
Early life and career
Donald Kent Slayton was born on March 1, 1924, on a farm near Leon, Wisconsin, to Charles Sherman Slayton and Victoria Adelia Slayton (). He was of English and Norwegian descent. From a young age, he worked on the farm to raise sheep and cows, and grow tobacco. Throughout Slayton's childhood, his family's home did not have electricity or indoor plumbing. At the age of five, Slayton was clearing a horse-drawn hay mower when his left ring finger was severed. He attended a two-room elementary school in Leon, and graduated from Sparta High School in 1942, where he boxed, played trombone, and was active in the Future Farmers of America (FFA).
World War II The 1941 attack on Pearl Harbor by the Empire of Japan occurred during Slayton's senior year of high school. He initially wished to join the U.S. Navy, but joined the U.S. Army Air Forces when it began accepting high school graduates to fly. After graduation, Slayton moved to San Antonio, Texas, and entered the Aviation Cadet Training Program. He was initially medically delayed because of his severed left ring finger, but was deemed able to fly. Slayton began flight training in Vernon, Texas, where he trained on the Fairchild PT-19, the PT-17 Stearman, and the AT-6 Texan. After three months of primary training, Slayton moved to Waco, Texas, for basic flight training, where he flew the BT-13 Valiant. Despite Slayton's wishes to fly single-engine fighter aircraft, he was selected to fly multi-engine aircraft. Slayton began multi-engine training on the Beechcraft AT-10, Cessna AT-17, and the Curtiss AT-9. Slayton graduated from flight training on April 22, 1943, and was assigned to fly on the North American B-25 Mitchell, his last choice for aircraft.
Slayton moved to Columbia Army Air Base in South Carolina for the three-month-long B-25 Mitchell training. After completing training, he was assigned to the 340th Bombardment Group, and departed for the European theater of operations on ship from Newport News, Virginia. After a stop in Zerni, North Africa, his convoy traveled to Naples, Italy. While traveling near the Strait of Gibraltar, their ships came under attack from German bombers and submarines. After he arrived in Naples, the 340th Bombardment Group moved to San Petrazio, where Slayton flew combat missions into the Balkan Peninsula. After six weeks, he moved to Foggia, where 48 aircraft were destroyed after an eruption of Mount Vesuvius. Afterwards, Slayton flew out of Salerno and Corsica, where he upgraded from copilot to pilot. After 56 combat sorties, Slayton completed his combat tour and returned to the U.S. in May 1944.
Immediately upon his return to Columbia Army Air Base to serve as a B-25 instructor, Slayton applied and was accepted to fly the new Douglas A-26 Invader bomber aircraft. He moved to Selfridge Field in Michigan for training, and began preparing for a deployment to the Pacific. In July 1945, he arrived on Okinawa Island and joined the 319th Bombardment Group. He flew seven combat missions over Japan, and encountered little Japanese resistance. Slayton flew his final combat mission on August 12, three days after the bombing of Nagasaki and spent two months waiting for his return to the U.S. After the war, Slayton worked as B-25 instructor in Albany, Georgia, and Boca Raton, Florida and separated from the Army in November 1946.
Post-World War II After he was discharged from the Army, Slayton enrolled at the University of Minnesota, in Minneapolis, and studied aeronautical engineering. As a student, he supported himself using the GI Bill and by working at a Montgomery Ward warehouse. He graduated with a Bachelor of Science degree in 1949, and accepted a job as an engineer with the Boeing Aircraft Corporation at Seattle, Washington. After moving to Seattle, Slayton lived in a rooming house and began working as a junior design engineer. While at Boeing, he worked on the B-52 Stratofortress and the KC-97 Stratofreighter.
While he was a college student, Slayton joined the Air Force Reserve, and was a T-6 Texan pilot flying out of Minneapolis–Saint Paul International Airport. He transitioned to the Minnesota Air National Guard (ANG), after accepting a demotion from captain to second lieutenant, to allow him to fly the A-26 Invader and P-51 Mustang. He left the Minnesota ANG when he moved to Seattle. Slayton attempted to join an Air Force Reserve unit in Seattle at the start of the Korean War, but was rejected on the grounds that his inactive reserve status had expired. He contacted his previous squadron commander in Minnesota and accepted his offer to rejoin his former squadron in February 1951. Upon his return, Slayton was initially medically disqualified from flying for his eyesight. He served as a maintenance officer while waiting for his medical clearance and then became a maintenance flight test officer once he had returned to flying status.
In 1952, Slayton transferred to active duty Air Force from the Air National Guard. After completing his education at Air Command and Staff School, he was assigned as a maintenance inspector at Twelfth Air Force Headquarters in Wiesbaden Army Airfield, West Germany. He additionally served as an F-86 Sabre pilot and maintenance officer with the 36th Fighter Day Wing at Bitburg Air Base, West Germany. While stationed in Germany, he met Marjorie Lunney and married her on May 18, 1955.
At the start of his assignment in West Germany, Slayton applied to the U.S. Air Force Test Pilot School (TPS), but was rejected on the basis that he had to complete his current three-year assignment. He reapplied and was accepted in 1955, and joined TPS Class 55C. After graduating in December 1955, he became a test pilot at the Flight Test Center at Edwards Air Force Base, California. He tested the F-101, F-102, F-104, F-105 and F-106. He was first assigned to the F-102, and tested the Matador and Genie missiles, and later tested the stall-spin characteristics of the F-105. In 1958, he helped test Britain's first supersonic fighter, the English Electric P1B Lightning.
NASA career Mercury Seven
In January 1959, Slayton was selected as one of the candidates for NASA's Project Mercury, the first U.S. crewed space flight program. Despite his initial lack of interest in spaceflight, he agreed to pursue astronaut selection. After an initial interview at the temporary NASA headquarters in the Dolley Madison House in Washington, D.C., Slayton was psychologically and physically tested at the Lovelace Clinic in Albuquerque, New Mexico, along with fellow future astronauts Scott Carpenter and Jim Lovell. On April 2, 1959, Slayton was notified of his selection as an astronaut. He moved his family from Edwards Air Force Base to a housing development near Fort Eustis, where he was neighbors with fellow Mercury Seven astronauts Gus Grissom and Wally Schirra.
After he began at NASA, Slayton was assigned to the development of the Convair Atlas LV-3B. In 1959, during a centrifuge training course, he underwent an electrocardiogram that found that he had erratic heart activity. He received further medical evaluation at Brooks Air Force Base and was diagnosed with idiopathic paroxysmal atrial fibrillation, but he was considered healthy enough to continue flying. During the uncrewed Mercury-Atlas 4 orbital spaceflight, he worked at the tracking station in Bermuda. He was selected for the second American crewed orbital mission, Mercury-Atlas 7, which he intended to name Delta 7. In early 1962, NASA Administrator James Webb opened an investigation into Slayton's atrial fibrillation. On March 15, 1962, two months prior to the launch of Delta 7, Slayton was medically disqualified from the flight and replaced on the mission by Scott Carpenter. Initially, Slayton's ineligibility was only for his assigned mission, and he attempted to improve his health by exercising more regularly and abstaining from alcohol. NASA leadership determined that Slayton was still at risk for atrial fibrillation and removed his eligibility to fly any of the remaining Mercury missions. Flight doctors recommended a cardiac catheterization to determine if he had a congenital condition, but NASA management rejected the proposal because of the risks of the operation.
NASA management
After being grounded by NASA, Slayton was selected in early 1962 to serve as the senior manager of the astronaut office. One of his first roles was to select the Group 2 astronauts, and the new class was announced in September 1962. Additionally, he was tasked with making future crew assignments, and assigned Gordon Cooper to Mercury-Atlas 9. In an administrative restructuring in October 1963, Slayton became assistant director of Flight Crew Operations, in addition to his job managing the astronaut office. In November 1963, he resigned from his commission in the Air Force after he was permanently disqualified from flying and became a civilian executive for NASA. After Alan Shepard was grounded due to Ménière's disease, he replaced Slayton as the manager of the astronaut office, while Slayton continued to work for Flight Crew Operations and was promoted to its director in 1966. Slayton continued to be responsible for making crew assignments, and determined the astronauts that would fly on the Gemini and Apollo missions. Slayton created a crew rotation, where a crew would be selected as the backup crew for a mission and would later be the prime crew three missions later.