Early years Gentry was born in
Enid, Oklahoma to Louise (née Hoyt) Gentry and Richard "Dick" Gentry. He attended
Kemper Military School in
Boonville, Missouri. He graduated from the
United States Naval Academy at
Annapolis, Maryland in 1957 and accepted his commission with the U.S. Air Force.
Military career Gentry received pilot training in 1958 and flew the
F-100 Super Sabre. He attended the
Aerospace Research Pilot School (now the USAF Test Pilot School) at
Edwards Air Force Base in California and graduated with class 63A. He spent the next seven years at the
Air Force Flight Test Center flying tests on the
F-104 Starfighter,
Northrop F-5,
General Dynamics F-111, and the
F-4 Phantom II. Gentry was the project pilot on a series of F-4E
spin susceptibility and prevention tests with
Burt Rutan as a project engineer. The spin test program culminated in a report and a training film,
Unload for Control, that was presented to F-4 aircrews.
Lifting body test pilot Gentry's most notable contributions to flight tests occurred when he was assigned to the lifting body research program in 1965. The lifting body program, operated jointly by the
National Aeronautics and Space Administration (NASA) and the Air Force, performed the initial manned tests to evaluate the feasibility of landing a wingless spacecraft on a pre-determined runway. Gentry was the eighth pilot assigned to the lifting body program and made his first air-towed flight in the
NASA M2-F1 on July 16, 1965. He transitioned to the heavyweight
Northrop M2-F2 lifting body which he first flew on October 12, 1966, in an unpowered mission air-dropped from a
B-52 Stratofortress. By May 1967, he had made five unpowered flights in the M2-F2 to define the vehicle's aerodynamic characteristics in preparation for upcoming rocket-powered supersonic flights. M2-F2 testing ended prematurely when the vehicle crashed on May 10, 1967, severely injuring fellow lifting body test pilot,
Bruce Peterson. Gentry transitioned to another heavyweight lifting body, the Northrop HL-10, and made the second flight of this vehicle on March 15, 1968. The HL-10 had just returned to flying status after nearly sixteen months of modifications to correct handling deficiencies. Gentry confirmed that the modifications were successful and reestablished confidence in the HL-10. On October 23, 1968, Gentry attempted the first powered flight in the HL-10. However, the rocket engine failed shortly after launch resulting in an emergency landing on Rosamond Dry Lake. On April 17, 1969, Gentry flew the first, unpowered, glide-flight of the Martin-Marietta X-24A—a short teardrop shaped lifting body. After several additional unpowered flights, preparations began for the powered flight using an LR-11 rocket engine. Gentry flew the first powered flight of the X-24A on March 19, 1970, reaching a speed of Mach 0.87. In June 1970, the
Northrop M2-F3 became available for testing. The M2-F3, the last of the heavyweight lifting bodies used in the program, was built from the wreckage of the M2-F2 and modified with an additional third vertical fin to improve handling characteristics. Gentry made his 30th and final lifting body flight in the M2-F3 on February 9, 1971. He was the only lifting body pilot to fly five different vehicles in the program. While working on the lifting body program, Gentry earned a master's degree in aerospace systems management from the
University of Southern California.
Vietnam and Cold War In January 1971, Gentry was assigned to the
8th Tactical Fighter Wing stationed at
Ubon Royal Thai Air Force Base in
Thailand where he flew more than 200 combat missions in the
F-4 Phantom during the
Vietnam War. As a Fast
Forward Air Controller (FAC), Gentry earned the
Silver Star—the United States' third highest military decoration for valor. After returning to the United States, Gentry held a leadership role in the Air Force's
Lightweight Fighter program that produced the
F-16 Fighting Falcon. He also served as an aerial combat commander at the
Red Flag tactical training exercises at
Nellis Air Force Base in
Nevada. On August 11, 1980, Gentry was named commander of the
388th Tactical Fighter Wing (TFW) at
Hill Air Force Base in
Utah. Under his command the 388th TFW was the first to transition into the F-16. In 1983, Gentry was assigned to the office of research, development and acquisitions at the headquarters for the United States Air Force. He retired from active duty in 1985.
Later years After retiring from the Air Force, Gentry founded the aerospace consulting firm of Gentry & Associates located in Alexandria, Virginia. He was a member of many organizations related to aviation including the
Air Force Association, the Red River Valley Fighter Pilots Association, the
Order of Daedalians, the
Society of Experimental Test Pilots, and the
International Order of Characters. Gentry died on March 3, 2003, in
Alexandria, Virginia after several months of illness. A funeral was held on April 9, 2003, at the Old Post Chapel at
Fort Myer followed by burial at
Arlington National Cemetery. He was survived by his wife, Anne, two sons, and several grandchildren. ==Honors==