The prototype Sikorsky S-51 commercial helicopter, NX92800, in flight between Bridgeport and East Hartford, Connecticut, 1946. (Sikorsky Historical Archive)
16 February 1946: The Sikorsky S-51 prototype, NX92800, made its first flight. The test pilot was Dimitry D. (“Jimmy”) Viner, who later made the first civilian rescue using a helicopter. The S-51 was the first helicopter intended for commercial use, though it was also widely used by military services worldwide. (The prototype was later delivered to Aéronavale, French Naval Aviation.)
Dimitry D. (“Jimmy”) Viner with a Sikorsky S-51, N5219, the civil version of the R-5. (Sikorsky Historical Archive)
The S-51 was a commercial version of the Sikorsky R-5 series military helicopters. It was a four-place, single engine helicopter, operated by one pilot. The cabin was built of aluminum with Plexiglas windows. The fuselage was built of plastic-impregnated plywood, and the tail boom was wood monocoque construction.
The main rotor consisted of three fully-articulated blades built of metal spars and plywood ribs and covered with two layers of fabric. (All metal blades soon became available.) The three bladed semi-articulated tail rotor was built of laminated wood. The main rotor turned counter-clockwise, as seen from above. (The advancing blade is on the helicopter’s right.) The tail rotor was mounted on the helicopter’s left side in a pusher configuration. It turned clockwise as seen from the helicopter’s left. (The advancing blade is below the axis of rotation.)
Sikorsky S-51 three-view illustration with dimensions. (Sikorsky Historical Archives)
The helicopter’s fuselage was 41 feet, 1¾ inches (12.541 meters). The main rotor had a diameter of 48 feet, 0 inches (14.630 meters) and tail rotor diameter was 8 feet, 5 inches (2.568 meters) giving the helicopter an overall length of 57 feet, ½ inch (17.386 meters). It was 12 feet, 11-3/8 inches (3.947 meters) high. The landing gear tread was 12 feet, 0 inches (3.658 meters).
The S-51 had an empty weight of 4,050 pounds (1,837.05 kilograms) and maximum takeoff weight of 5,500 pounds (2,494.76 kilograms). Fuel capacity was 100 gallons (378.5 liters).
Sikorsky S-51 NC92813, Los Angeles Airways, departs on a commercial flight, Los Angeles, California, 1947. (Los Angeles Times)
The helicopter was powered by a 986.749-cubic-inch-displacement (16.170 liter) air-cooled, supercharged, Pratt & Whitney Wasp Jr. T1B4 (R-985 AN-5) direct-drive, nine-cylinder radial engine which was placed vertically in the fuselage behind the crew compartment. This engine had a compression ratio of 6:1 and was rated at 450 horsepower at 2,300 r.p.m., Standard Day at Sea Level. The R-985 AN-5 was 48.00 inches (1.219 meters) long, 46.25 inches (1.175 meters) in diameter and weighed 684 pounds (310.3 kilograms) with a magnesium crankcase.
The S-51 had a maximum speed (VNE) of 107 knots (123.1 miles per hour/198.2 kilometers per hour). Range was 275 miles (442.6 kilometers). The service ceiling was 14,800 feet (4,511 meters). The absolute hover ceiling was 3,000 feet (914.4 meters).
Of 220 helicopters in the S-51 series built by Sikorsky, 55 were commercial models. Westland built another 159 helicopters under license.
One of Los Angeles Airways’ Sikorsky S-51 helicopters takes off from roof of the the Terminal Annex Post Office, Los Angeles, California, 1 October 1947. (Los Angeles Times Photographic Archive/UCLA Library)Dimitry D. Viner, circa 1931
Дмитро Дмитрович Вінер (Dimitry Dimitrovich Viner) was born in Kiev, Ukraine, Imperial Russia, 2 October 1908. He was the son of Dimitry Nicholas Weiner and Helen Ivan Sikorsky Weiner, a teacher, and the sister of Igor Ivanovich Sikorsky.
At the age of 15 years, Viner, along with his mother and younger sister, Galina, sailed from Libau, Latvia, aboard the Baltic-American Line passenger steamer S.S. Latvia, arriving at New York City, 23 February 1923.
“Jimmy” Viner quickly went to work for the Sikorsky Aero Engineering Company, founded by his uncle, Igor Sikorsky.
Dimitry Viner became a naturalized United States citizen on 27 March 1931.
Viner married Miss Irene Regina Burnett. They had a son, Nicholas A. Viner.
On 29 November 1945, Jimmy Viner and Captain Jackson E. Beighle, U.S. Army, flew a Sikorsky YR-5A to rescue two seamen from an oil barge which was breaking up in a storm off of Fairfield, Connecticut. This was the first time that a hoist had been used in an actual rescue at sea.
A Sikorsky R-5 flown by Jimmy Viner with Captain Jack Beighle, lifts a crewman from Texaco Barge No. 397, aground on Penfield Reef, 29 November 1945. (Sikorsky Historical Archive)
In 1947, Viner became the first pilot to log more than 1,000 flight hours in helicopters.
Dimitry Dimitry Viner died at Stratford, Connecticut, 14 June 1998, at the age of 89 years.
Brigadier General Charles E. Yeager, United States Air Force
Brigadier General Charles Elwood Yeager, United States Air Force, was born at Myra, Lincoln County, West Virginia, 13 February 1923. He was the second of five children of Albert Halley Yeager, a gas field driller, and Susan Florence Sizemore Yeager. He attended Hamlin High School, at Hamlin, West Virginia, graduating in 1940.
Chuck Yeager enlisted as a private, Air Corps, United States Army, 12 September 1941, at Fort Thomas, Newport, Kentucky. He was 5 feet, 8 inches tall (1.73 meters) and weighed 133 pounds (60 kilograms), with brown hair and blue eyes. He was assigned service number 15067845. Initially an aircraft mechanic, he soon applied for flight training. Private Yeager was accepted into the “flying sergeant” program.
Corporal Yeager in primary flight training. (U.S. Air Force)Yeager’s P-39 over the gunnery range, Tonapah, Nevada, April 1943. (chuckyeager.com)
Sergeant Yeager completed flight training at Yuma, Arizona, and on 10 March 1943, he was given a warrant as a Flight Officer, Air Corps, Army of the United States.
Assigned to the 363rd Fighter Squadron at Tonopah, Nevada, Flight Officer Yeager completed advanced training as a fighter pilot in the Bell P-39 Airacobra.
On 23 October 1943, while practicing tactics against a formation of Consolidated B-24 Liberator bombers, the engine of Yeager’s P-39 exploded. He wrote,
I was indicating about 400 mph when there was a roaring explosion in the back. Fire came out from under my seat and the airplane flew apart in different directions. I jettisoned the door and stuck my head out, and the prop wash seemed to stretch my neck three feet. I jumped for it. When the chute opened, I was knocked unconscious. . . I was moaning and groaning in a damned hospital bed. My back was fractured and it hurt like hell.
—Yeager: An Autobiography, Charles E. Yeager and Leo Janos, Bantam Books, Inc., New York, 1985, Chapter 3 at Page 21
Flight Officer Charles E. (“Chuck”) Yeager, Air Corps, Army of the United States.
When the 363rd deployed to England in November 1943, he transitioned to the North American Aviation P-51B Mustang. He named his P-51B-5-NA, 43-6762, Glamourus Glen, after his girlfriend. The airplane carried the squadron identification markings B6 Y on its fuselage. On 4 March 1944, he shot down an enemy Messerschmitt Bf-109G.
On his eighth combat mission, the following day, Yeager was himself shot down east of Bourdeaux, France, by Focke-Wulf Fw 190A 4 flown by Unteroffizier Irmfried Klotz.
. . . The world exploded and I ducked to protect my face with my hands, and when I looked a second later, my engine was on fire, and there was a gaping hole in my wingtip. The airplane began to spin. It happened so fast, there was no time to panic. I knew I was going down; I was barely able to unfasten my safety belt and crawl over the seat before my burning P-51 began to snap and roll, heading for the ground. I just fell out of the cockpit when the plane turned upside down—my canopy was shot away.
—Yeager: an Autobiography, by Charles E. Yeager and Leo Janos, Bantam Books, New York, 1985, Chapter 4 at Page 26.
Flight Officer Charles E. Yeager, Air Corps, Army of the United States, with his North American Aviation P-51B -5-NA Mustang, 43-6763, “Glamourus Glen.” (littlefriends.co.uk)
Yeager was slightly wounded. His Mustang was destroyed. Over the next few months he evaded enemy soldiers and escaped through France and Spain, returning to England in May 1944. He returned to combat with a new P-51D-5-NA Mustang, 44-13897, which he named Glamorous Glenn II.¹ He later flew Glamorous Glen III, P-51D-15-NA Mustang, 44-14888.²
First Lieutenant Charles Elwood (“Chuck”) Yeager, Air Corps, Army of the United States, standing on the wing of his North American Aviation P-51D-5-NA Mustang, 44-13897, “Glamorous Glenn II,” at Air Station 373, 12 October 1944. (Roger Freeman Collection, American Air Museum in Britain, FRE 000483)
Flight Officer Yeager was commissioned as a 2nd lieutenant, Air Corps, Army of the United States, 6 July 1944. A few months later, 24 October 1944, he was promoted to the rank of captain, A.U.S. Between 4 March and 27 November 1944, Captain Yeager was officially credited with 11.5 enemy aircraft destroyed during 67 combat missions.
Chuck Yeager’s Mustang, Glamorous Glen III: North American Aviation P-51D-15-NA, serial number 44-14888, identification markings B6 Y, at USAAF Station 373 (RAF Leiston), Winter 1945. (U.S. Air Force)
During World War II, Captain Yeager had been awarded the Silver Star with one oak leaf cluster (two awards); Distinguished Flying Cross; Bronze Star Medal with “V” (for valor); Air Medal with 6 oak leaf clusters (7 awards); and the Purple Heart.
With the end of the War in Europe approaching, Yeager was rotated back to the United States.
Captain Yeager married Miss Glennis Faye Dickhouse of Oroville, California, 26 February 1945, at at the Yeager family home in Hamlin, West Virginia. The double-ring ceremony was presided over by Rev. Mr. W. A. DeBar of the Trinity Methodist Church. “The pretty brunette was attired in a light aqua crepe dress of street length. Her accessories were black and her corsage was fashioned of yellow rosebuds.”
On 10 February 1947, Captain Yeager received a commission as a second lieutenant, Air Corps, United States Army, with date of rank retroactive to 6 July 1944 (the date of his A.U.S. commission). He was promoted to first lieutenant on 6 July 1947. (These were permanent Regular Army ranks. Yeager continued to serve in the temporary rank of captain.) When the United States Air Force was established as a separate military service, 18 September 1947, Yeager became an Air Force officer.
Captain Chuck Yeager, U.S. Air Force
Captain Yeager was assigned to the six-month test pilot school at Wright Field, Dayton, Ohio. He took part in several test projects, including the Lockheed P-80 Shooting Star and Republic P-84 Thunderjet. He also evaluated the German and Japanese fighter aircraft brought back to the United States after the war. Captain Yeager was then selected by Colonel Albert Boyd to fly the experimental Bell XS-1 rocket plane at Muroc Field in the high desert of southern California.
Captain Chuck Yeager on Rogers Dry Lake with the Bell X-1, 1948.
After a series of gliding and powered flights, on 14 October 1947, Captain Yeager and the XS-1 were dropped from a modified B-29 Superfortress at an altitude of 20,000 feet (6,048 meters). (Yeager had named his new rocket plane Glamorous Glennis.) Starting the 4-chambered Reaction Motors rocket engine, Yeager accelerated to Mach 1.06 at 42,000 feet. He had “broken” the Sound Barrier.
Yeager made more than 40 flights in the X-1 over the next two years, exceeding 1,000 miles per hour (1,610 kilometers per hour) and 70,000 feet (21,336 meters). He was awarded the Mackay and Collier Trophies in 1948. In 1949, the Fédération Aéronautique Internationale awarded its Gold Medal to Captain Yeager. General Yeager’s gold medal is in the collection of the Smithsonian Institution National Air and Space Museum, along with the Bell X-1 rocket plane, Glamorous Glennis.
The X-1 was followed by the Bell X-1A. On 12 December 1953, Major Yeager flew the new rocket plane to 1,650 miles per hour (2,655 kilometers per hour), Mach 2.44, at 74,700 feet (22,769 meters).
After the rocket engine was shut down, the X-1A tumbled out of control—”divergent in three axes” in test pilot speak—and fell out of the sky. It dropped nearly 50,000 feet (15,240 meters) in 70 seconds. Yeager was exposed to accelerations of +8 to -1.5 g’s. The motion was so violent that Yeager cracked the rocket plane’s canopy with his flight helmet.
Yeager was finally able to recover by 30,000 feet (9,144 meters) and landed safely at Edwards Air Force Base.
Yeager later remarked that if the X-1A had an ejection seat he would have used it.
Bell Aircraft Corporation engineers had warned Yeager not to exceed Mach 2.3.
Major Charles E. Yeager, U.S. Air Force, seated in the cockpit of the Bell X-1A, 48-1384, circa 1953. (U.S. Air Force)
During the Korean War, Major Yeager test flew a captured North Korean Mikoyan-Gurevich MiG-15 fighter. Its pilot, Lieutenant No Kum-Sok, had flown it to Kimpo Air Base, Republic of South Korea, on 21 September 1953.
A Mikoyan-Gurevich MiG-15bis in a hangar at Kimpo Air Base, South Korea.It was examined and test flown by Air Force test pilot Major Charles E. Yeager. (U.S. Air Force).
On 17 November 1954, in a ceremony at The White House, President Dwight D. Eisenhower presented the Harmon International Trophy to Major Yeager, for his Mach 2.44 flight. His friend, Jackie Cochran, was awarded the Harmon Aviatrix Trophy at the same time.
Jackie Cochran and Chuck Yeager being presented with the Harmon International Trophies by President Dwight D. Eisenhower at The White House, 17 November 1954. (Air Force Flight Test Center History Office 040130-F-0000G-011)
In 1954, Major Yeager was assigned to command the 417th Fighter Bomber Squadron at Hahn Air Base, Germany. The 417th flew the North American Aviation F-86H Sabre.
The 1956 U.S. Air Forces in Europe (50th Fighter-Bomber Wing) representatives to the Air Force Fighter Weapons Meet at Nellis Air Force Base, Nev., included (left to right) Capt. Coleman Baker, Lt. Col. Charles “Chuck” Yeager, Col. Fred Ascani, Maj. James Gasser and Capt. Robert Pasqualicchio. (U.S. Air Force 061208-F-0000C-002)
In 1958, Lieutenant Colonel Yeager assumed command of the 1st Fighter Day Squadron at George Air Force Base, Victorville, California, which was equipped with the North American Aviation F-100 Super Sabre.
Lieutenant Colonel Charles E. Yeager, USAF, 1st Fighter Day Squadron, 413th Fighter Day Wing, with North American Aviation F-100F-15-NA Super Sabre, 56-3950, George Air Force Base, Victorville, California, 1958. (U.S. Air Force via Jet Pilot Overseas)
Yeager attended the Air War College at Maxwell AFB, Montgomery, Alabama, graduating in June 1961.
On 23 July 1962, Colonel Yeager returned to Edwards Air Force Base to become commandant of the Aerospace Research Pilot School.
Colonel Yeager became Commandant of the U.S. Air Force Aerospace Research Pilot School at Edwards Air Force Base, 23 July 1962. (U.S. Air Force)
The Aerospace Research Pilots School trained all of the U.S. military’s astronaut candidates. One of the training aircraft was the Aerospace Trainer (AST), a highly-modifies Lockheed NF-104A Starfighter. The AST was equipped with a rocket engine and a reaction control system to provide pitch, roll and yaw control when at very high altitudes where the normal aircraft flight controls could not function.
Colonel Charles E. Yeager, U.S. Air Force, in the cockpit of a Lockheed NF-104A Aerospace Trainer, at Edwards Air Force Base, California, 1963. (U.S. Air Force)Yeager’s NF-104A out of control. (Frame from film shot from a distance of 20 miles). (U.S. Air Force)
On 10 December 1963, Colonel Yeager was flying an AST, 56-762, on a zoom climb profile, aimingg for an altitude record at approximately 120,000 feet ( meters). He reached only 108,000 feet (32,918 meters) however. On reentry, the AST’s pitch angle was incorrect and its engine would not restart. The airplane went into a spin.
Yeager rode the out-of-control airplane down 80,000 feet (24,384 meters) before ejecting.
The data recorder would later indicate that the airplane made fourteen flat spins from 104,000 until impact on the desert floor. I stayed with it through thirteen of those spins before I punched out. I hated losing an expensive airplane, but I couldn’t think of anything else to do. . . I went ahead and punched out. . . .
— Yeager, An Autobiography, by Brigadier General Charles E. Yeager, U.S. Air Force (Retired) and Leo Janos, Bantam Books, New York, 1985, at Pages 279–281.
Colonel Yeager commanded the 405th Fighter Wing at Clark AFB, Philippine Islands, in July 1966. He flew 127 combat missions over Vietnam with the Martin B-57 Canberra light bomber.
Colonel Charles E. (“Chuck”) Yeager, USAF, commanding the 405th Fighter Wing, with crew chief TSGT Rodney Sirois, before a combat mission with a Martin B-57 Canberra during the Vietnam War. (Stars and Stripes)
Returning to the United States in February 1968, Colonel Yeager took command of the 4th Tactical Fighter Wing, Seymour Johnson AFB, North Carolina. The 4th deployed to the Republic of Korea during the Pueblo Crisis.
Colonel Yeager was promoted to the rank of brigadier general, 1 August 1969 (date of rank 22 June 1969). He was appointed vice commander, Seventeenth Air Force, at Ramstein Air Base, Germany.
Brigadier General Charles E. Yeager, United States Air Force, July 1969. (Stars and Stripes)
Brigadier General Yeager served as a U.S. defense representative to Pakistan from 1971 to 1973. He was then assigned to the Air Force Inspection and Safety Center, Norton AFB, near Riverside, California. He took command of the center June 1973.
Brigadier General Charles E. Yeager, USAF, at Edwards Air Force Base, California, 28 February 1975. (U.S. Air Force)
Brigadier General Yeager made his final flight as an active duty Air Force pilot in a McDonnell Douglas F-4E Phantom II at Edward Air Force Base, 28 February 1975. During his career, General Yeager flew 180 different aircraft types and accumulated 10,131.6 flight hours. He retired the following day, 1 March 1975, after 12,222 days of service.
Chuck Yeager’s popularity skyrocketed following the publication of Tom Wolfe’s book, The Right Stuff, in 1979, and the release of The Ladd Company’s movie which was based on it. (Yeager had a “cameo” appearance in the film.) He became a spokesperson for AC Delco and the Northrop Corporation’s F-20 Tigershark lightweight fighter prototype. In 1986 and 1988, he drove the pace car at the Indianapolis 500. Yeager co-wrote an autobiography, Yeager, with Leo Janos, published in 1985, and followed in 1988 with Press On!, co-authored by Charles Leerhsen.
In 1986, President Ronald Reagan appointed General Yeager to the Rogers Commission investigating the Challenger Disaster.
Glennis Yeager passed away 22 December 1990 at Travis Air Force Base, Sacramento, California.
TDiA was present at Edwards Air Force Base, 14 October 1997, on the 50th Anniversary of Yeager’s flight breaking the sound barrier. Flying in the forward cockpit of a McDonnell Douglas F-15D Eagle, with co-pilot Lieutenant Colonel Troy Fontaine and wingman Bob Hoover in a General Dynamics F-16 chase plane, Yeager again left a sonic boom in his path as he flew over the high desert.
On 22 August 2003, Chuck Yeager married Ms. Victoria Scott D’Angelo in a civil ceremony at Incline Village, Nevada.
Brigadier General Charles Elwood Yeager, United States Air Force (Retired) died at a hospital in Los Angeles, California, 7 December 2020, at the age of 97 years. His remains are buried at the Lincoln Memorial Cemetery, Myra, West Virginia.
¹ Glamorous Glenn II had initially been assigned to Captain K. Peters, who had named it Daddy Rabbit. The fighter crashed in bad weather 18 October 1944. 2nd Lieutenant Horace M. Roycroft was killed.
² Glamorous Glen III, renamed Melody’s Answer, was lost in combat 2 March 1945, south of Wittenburg, Germany. Its pilot, Flight Officer Patrick L. Mallione, was killed in action. (MACR 12869)
Space Shuttle Discovery (STS-63) lifts off from Launch Complex 39B, Kennedy Space Center, 05:22:04 UTC, 3 February 1995. (NASA)
3 February 1995: At 12:22:03.994 a.m., Eastern Standard Time, Space Shuttle Discovery (OV-103) lifted off from Launch Complex 39B at the Kennedy Space Center, Cape Canaveral, Florida. The mission, STS-63, was a rendezvous with the Russian space station, Mir.
Commander James Donald Wetherbee, United States Navy, on his second space flight, was the mission commander. Lieutenant Colonel Eileen Marie Collins, United States Air Force, on her first space flight, was Discovery’s pilot. This was the first time in the NASA Space Shuttle Program that a woman had been assigned as pilot of a space shuttle.
Also on board were Mission Specialists Bernard Anthony Harris, Jr., M.D.; Colin Michael Foale, Ph.D.; Janice Elaine Voss, Sc.D.; and Colonel Vladimir Georgiyevich Titov, Russian Air Force, of the Roscosmos State Corporation for Space Activities.
Flight crew of Space Shuttle Discovery, Mission STS-63. Seated, left to right: Janice Elaine Voss, Sc.D., Mission Specialist; Lieutenant Colonel Eileen Marie Collins, U.S. Air Force, Pilot; Commander James Donald Weatherbee, U.S. Navy, Mission Commander; Colonel Vladimir Georgiyevich Titov, Russian Air Force, Cosmonaut. Standing, Dr. Bernard Anthony Harris, Jr., M.D., Mission Spcialist; C. Michael Foale, Mission Spcialist. (NASA MSFC-9414225)
The primary purpose of the mission was to conduct a close approach and fly-around of Mir to demonstrate techniques prior to an actual docking, scheduled for a later flight. A number of scientific experiments and a space walk were carried out by the crew.
Space Station Mir imaged from Space Shuttle Discovery during Mission STS-63. Souz TM-20 is docked with the space station. (NASA)
Discovery landed at the Kennedy Space Shuttle Landing Facility at 11:50:19 UTC, 11 February, after completing 129 orbits. The total mission duration was 8 days, 6 hours, 28 minutes, 15 seconds.
Eileen Collins was born at Elmira, New York, 19 November 1956, a daughter of Irish immigrants to the United States of America. She graduated from high school in 1974 then attended Corning Community College, Corning, New York, where she earned an associate’s degree in Mathematics and Science, 1976. She went on to Syracuse University at Syracuse, New York, graduating in 1978 with a Bachelor of Arts (B.A.) degree in math and exonomics. In 1986 Collins earned a master of science degree in Operations Research from Stanford University, and three years later, received a second master’s degree in Space Systems Management from Webster University.
2nd Lieutenant Eileen M. Collins, USAF, with a Northrop T-38A Talon trainer at Vance AFB, September 1979. (U.S. Air Force)
Eileen Collins had expressed an interest in aviation and space flight from an early age. After graduating from Syracuse University, she was one of four women selected to attend U.S. Air Force pilot training at Vance Air Force Base, Oklahoma. She graduated in 1979, earning her pilot’s wings and was commissioned as a second lieutenant. She remained at Vance AFB as a pilot instructor, flying the Northrop T-38A Talon supersonic trainer.
Collins was next sent for pilot transition training in the Lockheed C-141 Starlifter, a four-engine transport. She served as a pilot at Travis Air Force Base, California.
From 1986–1989, Captain Collins was assigned as Assistant Professor in Mathematics at the U.S. Air Force Academy, Colorado Springs, Colorado. Next, she became only the second woman to attend the Air Force Test Pilot School at Edwards Air Force Base, graduating with Class 89B.
Major Eileen M. Collins, U.S. Air Force, with McDonnell F-4E-31-MC Phantom II 66-0289, at Edwards AFB, 1990. (U.S. Air Force)Eileen Collins (Irish America Magazine)
In 1990, Major Collins was accepted for the NASA astronaut program, and was selected as an astronaut in 1992.
Eileen Marie Collins was awarded the Harmon Trophy for her flight aboard Discovery (STS-63). In 1997, she flew as pilot for Atlantis (STS-84). She commanded Columbia (STS-93) in 1999, and Discovery (STS-114) in 2005.
Colonel Collins retired from the Air Force in January 2005, and from NASA in May 2006. With a remarkable record of four shuttle flights, she has logged 38 days, 8 hours, 10 minutes of space flight. During her career, she flew more than 30 aircraft types, and logged a total of 6,751 hours.
Colonel Eileen M. Collins, U.S. Air Force, NASA Astronaut. (Annie Liebovitz)
Test pilot Robert C. Chilton stands on the wing of a North American Aviation P-51B-10-NA Mustang, 42-106435. (North American Aviation, Inc.)
3 February 1943: North American Aviation test pilot Robert C. Chilton made the first flight of the first production P-51A Mustang, P-51A-1-NA, serial number 43-6003. A Model NA-99, the Mustang had manufacturer’s serial number 99-22106. This airplane was one of 1,200 which had been ordered by the United States Army Air Corps on 23 June 1942. (With the introduction of the Merlin-powered P-51B, the number of P-51A Mustangs was reduced to 310.)
The first production P-51A, 43-6003, shown with skis for winter operations testing. (U.S. Air Force)
The Mustang had been designed and built by North American Aviation, Inc., as a fighter for the Royal Air Force. Two Mustang Mk.I airplanes, the fourth and the tenth from the RAF production line, had been given to the Air Corps for evaluation and designated XP-51, serial numbers 41-038 and 41-039. Prior to this, the Air Corps had ordered 150 P-51 fighters, but these were Mustang Mk.I models to be turned over to England under Lend-Lease.
43-6003 was used for testing and was equipped with skis for takeoff and landing tests in New Hampshire and Alaska.
The second production North American Aviation P-51A-NA Mustang, 43-6004, (99-22107) was used for high-speed testing. It was called Slick Chick. (U.S. Air Force)
The North American Aviation P-51A Mustang was a single-seat, single-engine, long-range fighter. It is a low-wing monoplane with retractable landing gear and is of all-metal construction. It was 32 feet, 2½ inches (9.817 meters) long with a wingspan of 37 feet, ¼-inch (11.284 meters) and a height of 12 feet, 2-½ inches (3.721 meters) high. It had an empty weight of 6,451 pounds (2,926 kilograms) and gross weight of 8,000 pounds (3,629 kilograms).
The third production North American Aviation P-51A-1-NA Mustang, 43-6005 (99-22108). (North American Aviation, Inc.)
The P-51A was powered by a right-hand tractor, liquid-cooled, supercharged, 1,710.60-cubic-inch-displacement (28.032 liter) Allison Engineering Company V-1710-F20R (V-1710-81) single overhead cam (SOHC) 60° V-12 engine with a compression ratio of 6.65:1. The V-1710-81 had a Maximum Continuous Power rating of 870 horsepower at 2,600 r.p.m., at Sea Level, and 1,000 horsepower at 2,600 r.p.m. at 14,400 feet (4,389 meters). It was rated at 1,200 horsepower at 3,000 r.p.m. for takeoff. The Military Power rating was 1,125 horsepower at 3,000 r.p.m., to an altitude of 14,600 feet (4,450 meters). War Emergency Power was 1,480 horsepower. The engine drove a 10 foot, 9 inch (3.277 meter) diameter, three-bladed Curtiss Electric constant-speed propeller through a 2:1 gear reduction. The engine was 7 feet, 1.87 inches (2.181 meters) long, 3 feet, 0.75 inches (0.933 meters) high and 2 feet, 5.28 inches (0.744 meters) wide. It weighed 1,352 pounds (613 kilograms).
Allison-engined P-51A-1-NA Mustang 43-6008. (99-22111). (NASA Langley Research Center Vintage Photographs Collection)
Maximum speed of the P-51A in level flight was 415 miles per hour (668 kilometers per hour) at 10,400 feet (3,170 meters) at War Emergency Power. It could climb to 20,000 feet (6,096 meters) in 7 minutes, 3.6 seconds, and to 30,000 feet (9,144 meters) in 15 minutes, 4.8 seconds. Its service ceiling was 35,100 feet (10,699 meters) and the absolute ceiling was 36,000 feet (10,973 meters). Maximum range on internal fuel was 750 miles (1,207 kilometers).
The P-51A was armed with four Browning AN-M2 .50-caliber machine guns, with two mounted in each wing. The inner guns had 350 rounds of ammunition, each, and the outer guns had 280 rounds per gun.
Of the 1,200 P-51A Mustangs ordered by the Army Air Corps, 310 were delivered. The order was changed to the Packard V-1650 Merlin-powered P-51B Mustang.
The fourth production airplane, North American Aviation P-51A-1-NA Mustang 43-6006. This Mustang crashed in Alaska in 1944 and was recovered in 1977, then restored. It has FAA registration N51Z. (Kogo)
Robert Creed Chilton was born 6 February 1912 at Eugene, Oregon, the third of five children of Leo Wesley Chilton, a physician, and Edith Gertrude Gray. He attended Boise High School in Idaho, graduating in 1931. Chilton participated in football, track and basketball, and also competed in the state music contest. After high school, Chilton attended the University of Oregon where he was a member of the Sigma Chi fraternity (ΣΧ). He was also a member of the Reserve Officers Training Corps (ROTC).
Bob Chilton enlisted as an Aviation Cadet in the U.S. Army Air Corps, 25 June 1937. He was trained as a fighter pilot at Randolph Field and Kelly Field in Texas, and was commissioned as a Second Lieutenant in 1938. Lieutenant Chilton was assigned to fly the Curtiss P-36 Hawk with the 79th Pursuit Squadron, 20th Pursuit Group, at Barksdale Field, Louisiana. Because of a medical condition, he was released from active duty, 1 April 1939.
At some time prior to 1940, Bob Chilton, married his first wife, Catherine. They lived in Santa Maria, California, where he worked as a pilot at the local airport.
In January 1941, Chilton went to work as a production test pilot for North American Aviation, Inc., Inglewood, California. After just a few months, he was assigned to the NA-73X.
Chilton married his second wife, Betty W. Shoemaker, 15 November 1951.
On 10 April 1952, Bob Chilton returned to active duty with the U.S. Air Force, with the rank of lieutenant colonel. He served as Chief of the Republic F-84 and F-105 Weapons System Project Office, Air Material Command, at Wright-Patterson Air Force Base, Dayton, Ohio, until 9 March 1957.
From 1958, Chilton was a vice president for Horkey-Moore Associates, an engineering research and development company in Torrance, California, founded by former North American aerodynamacist Edward J. Horkey. In 1961, he followed Horkey to the Space Equipment Corporation, parent company of Thompson Industries and Kerr Products, also located in Torrance. Chilton served as corporate secretary and contracts administrator.
Chilton married his third wife, Wilhelmina E. Redding (Billie E. Johnson) at Los Angeles, 26 July 1964. They divorced in 1972.
In 1965, Bob Chilton returned to North American Aviation as a flight test program manager. He retired in 1977.
Robert Creed Chilton died at Eugene, Oregon, 31 December 1994, at the age of 82 years.
General Dynamics YF-16 Fighting Falcon 72-1567, 2 February 1974. (U.S. Air Force 071202-F-9999J-029)
2 February 1974: Test pilot Philip Francis Oestricher made the first test flight of the General Dynamics YF-16 Light Weight Fighter prototype, 72-1567, at Edwards Air Force Base, California. During the 90-minute flight the airplane reached 400 knots (740.8 kilometers per hour) and 30,000 feet (9,144 meters).
A prototype General Dynamics YF-16 nears completion, 1973. (General Dynamics)
Built at Fort Worth, Texas, the prototype rolled out 13 December 1973. It was loaded aboard a Lockheed C-5A Galaxy heavy-lift transport and was flown to Edwards. During high-speed taxi tests on 20 January 1974 the YF-16 began to oscillate in the roll axis, threatening to touch the wingtips to the ground.
Philip Francis Oestricher, General Dynamics test pilot. (Photograph courtesy of Neil Corbett, Test and Research Pilots, Flight Test Engineers)
To prevent damage, Phil Oestricher lifted off to regain control and after six minutes, touched down again.
The airplane had sustained damage to the right horizontal stabilizer. Engineers determined that the airplane’s roll control was too sensitive, and that the exhaust nozzle was improperly wired, resulting in too much thrust at low throttle settings. The YF-16 was repaired and was ready for its first test flight on 2 February.
The first prototype YF-16, 72-1567, during a test flight, March 1974. Edwards Air Force Base is visible under the airplane’s left wing. (Lockheed Martin)
The two YF-16 prototypes competed against the Northrop YF-17 for the role of the Air Force and NATO light weight fighter program. The YF-16 was selected and single-seat F-16A and two-seat F-16B fighters were ordered. The YF-17 was developed into the U.S. Navy’s F/A-18 Hornet.
General DynamicsYF-16 72-1567 and Northrop YF-17 72-1569 prototypes. (U.S. Air Force)Phil Oestricher in the cockpit of the first General Dynamics YF-16 Light Weight Fighter prototype at Carswell Air Force Base, Texas, December 1973. (Lockheed Martin)
The F-16 was designed to be a highly-maneuverable, light weight air superiority day fighter, but it has evolved into a multi-role fighter/fighter bomber with all weather attack capability.
The F-16 (now, a Lockheed Martin product) remains in production, with more than 4,600 having been built in the United States and under license in Europe. The United States Air Force had 1,017 F-16s in service as of 2021,
A U.S. Air Force F-16C Block 50D Fighting Falcon, serial number 91-0405, of the 52nd Fighter Wing, Spangdahlem Air Base, Germany. This F-16 is armed with four AIM-120 air-to-air missiles and two air-to-ground AGM-88 High-speed Anti-Radiation Missiles (HARM). It carries external fuel tanks and an electronics countermeasures unit. (U.S. Air Force)
The F-16C is a single-seat, single-engine Mach 2+ fighter. It is 49.3 feet (15.03 meters) long with a wingspan of 32.8 feet (10.0 meters) and overall height of 16.7 feet (5.09 meters). It has an empty weight of 20,300 pounds (9,207.9 kilograms) and maximum takeoff weight of 48,000 pounds (21,772 kilograms).
The fighter is powered by one Pratt & Whitney F100-PW-229 or General Electric F110-GE-129 afterburning turbofan engine which produces 17,800 pounds of thrust (79.178 kilonewtons) each, or 29,100 pounds (129.443 kilonewtons) with afterburner) (F100), or 29,500 pounds (131.223 kilonewtons) (F110).
Lockheed Martin F-16C Block 30H Fighting Falcon 87-0292, 121st Fighter Squadron, 113th Operations Group, District of Columbia Air National Guard (Lockheed Martin)
The Fighting Falcon has a maximum speed of Mach 1.2 (913 miles per hour, or 1,470 kilometers per hour) at Sea Level, and Mach 2+ at altitude. The fighter’s service ceiling is higher than 50,000 feet (15,240 meters). Maximum range is 2,002 miles (3,222 kilometers).
The F-16C is armed with one General Electric M61A1 Vulcan 20 mm 6-barreled Gatling gun with 511 rounds of ammunition, and can carry a wide range of air-to-air and air-to-ground missiles and bombs.
The first production F-16A made its first flight December 1976. The U.S. Air Force inventory 1,017 C/D (2021) More than 4,600 have been built, serving with 25 air forces world wide.
The F-16 Block 70 remains in production at Greenville, South Carolina . Lockheed Martin has a backlog of 117 Block 72 aircraft as of 31 January 2025.
Lockheed Martin F-16 under construction at Greenville, South Carolina. (Lockheed Martin)
The first prototype YF-16, 72-1567, is now on display at the Virginia Air and Space Center, Hampton, Virginia.
The first of the two General Dynamics prototype YF-16 Fighting Falcon lightweight fighters, 72-1567, on display at the Virginia Air and Space Center, Hampton, Virginia. (Rtphokie via Wikipedia)Philip Oestricher, 1948
Philip Francis Oestricher was born at Orlando, Florida, 26 September 1931. He was the first of four children of Albert Raymond Oestricher, a chiropractor, and Henriette Hyacinthe Dodane Oestricher.
He attended Orlando High School, where he was a classmate of his future wife, Patricia Ratti. Both graduated in 1949.
Oestricher then attended the University of Florida at Gainesville, Florida, where he majored in engineering. While there, he was associate editor of Florida Engineer, and a member of the Institute of Aeronautical Sciences, Automotive Engineering Society, Sigma Tau (ΣΤ), an engineering honor society, and Phi Kappa Phi (ΦΚΦ), also an honor society. He graduated with a Bachelor of Science degree in aeronautical engineering, 8 June 1952. Oestricher continued post-graduate studies and earned a masters degree in engineering in 1953.
Miss Patricia Ratti
Philip Francis Oestricher married Miss Patricia Maria Ratti, then a senior at the University of Florida, at 10:00 a.m., 27 December 1952, in a ceremony held at the St. James Roman Catholic Church at the corner of Orange Avenue and Robinson Street, in downtown Orlando, Florida. They would eventually have four children.
Oestricher worked for the Convair Division of General Dynamics Corporation at Fort Worth, Texas, in 1953–1954.
Convair Division of General Dynamics Corporation at Fort Worth, Texas, circa 1954.
Having enlisted in the United States Marine Corps, Private First Class Oestricher entered the USMC Officer Candidate Course at Quantico, Virginia, 12 April 1954. He graduated as a Naval Aviator and was commissioned a second lieutenant in July 1954. He attended flight training at NAS Pensacola, Florida, in 1955. He continued with advanced flight training at NAS Corpus Christi, Texas, and was promoted to the rank of first lieutenant, 2 January 1956. On 27 January 1956, 1st Lieutenant Oestricher was cited as the outstanding fighter syllabus graduate from the Naval Air Advanced Training Command.
A flight of four Grumman F9F-8 Cougars of VMF(AW)-114, circa 1957. (USMC A135160)
Lieutenant Ostricher was assigned to Marine All-Weather Fighter Squadron 114 (VMF(AW)-114, “Death Dealers”) flying the Grumman F9F-8 Cougar and Douglas F4D-1 Skyray. The squadron deployed aboard the Midway-class large aircraft carrier USS Franklin D. Roosevelt (CVA-42). The carrier had just completed the SCB-110 refit and emerged with a new angled flight deck deck.
Three Douglas F4D-1 Skyrays of VMF(AW)-114, prepare to launch from USS Franklin D. Roosevelt, CVA-42. (Sgt. Harold (“Woody”) Woodrom, USMC)
Following this tour at sea, Lieutenant Oestricher left active duty, but remained in the U.S. Marine Corps Reserve, eventually rising to the rank of lieutenant colonel.
Phil Oestricher returned to Convair as an aeronautical engineer. He was assigned work on the B-58A Hustler, a Mach 2 strategic bomber; the Model 54, the U.S. Air Force NX-2 CAMAL ¹ nuclear-powered bomber prototype; and the RB-57F, a specialized strategic reconnaissance aircraft.
Artists rendering of the Convair Model 54, a proposal for the U.S. Air Force NX-2 nuclear-powered bomber. (Convair)General Dynamics RB-57F Canberra 63-13291. (U.S. Air Force 061031-F-1234P-021)
Phil Oestricher attended the U.S. Navy Test Pilot School (Class 44) at NAS Patuxent River, Maryland, in 1966. The course included 420 classroom hours, and about 150 flight hours. Oestricher flew 15 different aircraft types. He graduated as his class’s outstanding student.
“He stood out as an exceptionally capable test pilot in all respects. We are proud to list him as a graduate of our school,” said D. Z. Skalla, acting director of USNTPS.²
“TEST PILOTS—Graduates of Class No. 44, U.S. Naval Test Pilot School, inspect F-111A close up during a recent tour of Fort Worth division. Some will be flight-testing F-111Bs in the days ahead.” Phil Oestricher is sixth from right. (General Dynamics News)
Lieutenant Colonel Oestricher commanded VMF(AW)-112, the Marine Corps’ largest reserve squadron. At the time, the squadron was flying the Chance Vought F8U Crusader. Colonel Oestricher retired from the Marine Corps in 1973.
Phil Oestricher was a design safety engineer on the General Dynamics F-111 program. As a test pilot, he flew all models of that aircraft.
He made the first flight of the F-16B 8 August 1977.
In 1979, Oestricher was awarded the Iven C. Kincheloe Award of the Society of Experimental Test Pilots for “outstanding professional accomplishment in flight testing.”
Phil Oestricher worked for General Dynamics as an engineer and test pilot for 33 years. He was the Director of Flight Test for 11 years. He retired in July 1992.
General Dynamics YF-16 LWF prototype 72-1568 with pilot, Phil Oestricher, May 1974. (Code One Magazine)
Lieutenant Colonel Philip Francis Oestricher, United States Marine Corps (Retired), died at Benbrook, Texas, 18 December 2015. He was 84 years old. His remains were interred at Woodlawn Memorial Park, Gotha, Florida.
¹ Continuous Airborne Alert, Missile Launching and Low-Level Penetration
² GENERAL DYNAMICS NEWS, Wednesday, 30 November 1966, Page 6, Column 2
