Lieutenant Apollo Soucek waves from the cockpit of the Wright XF3W-1 Apache. (NASM)
8 May 1929: Lieutenant Apollo Soucek, United States Navy, set a Fédération Aéronautique Internationale (FAI) World Record for Altitude when he flew the prototype Wright Aeronautical Division XF3W-1 Apache, Bu. No. A7223, to 11,930 meters (39,140 feet) over NAS Anacostia, Washington, D.C. ¹ The record was certified by the National Aeronautic Association.
Lieutenant Soucek was awarded the Distinguished Flying Cross for this achievement.
Flight reported:
New Altitude Record Claimed
It is announced in Washington that Lieut. Apollo Soucek, U.S.N., claims to have created a new height record of 40,000 ft. on May 8. In the course of his flight he encountered a temperature of 60 deg. F. below zero. [-51 °C.]
—FLIGHT The Aircraft Engineer & Airships, No. 1064. (No. 20. Vol. XXI.) May 16, 1929, Page 405 at Column 2
Lieutenant Apollo Soucek, United States Navy.
Lieutenant Soucek set two other World Records with the XF3W-1 Apache. On 4 June 1929, with the Apache configured as afloat plane, he flew it to an altitude of 11,753 meters (38,560 feet). ² The following year, 4 June 1930, he flew the Apache to 13,157 meters (43,166 feet). ³
Wright XF3W-1 Apache, Bu. No. A7223, at NACA Langley. (NASA)
Wright Aeronautical Division XF3W-1 Apache, Bureau of Aeronautics serial number A7223, was a prototype for a single-place, single-engine fighter for the U.S. Navy. The XF3W-1 was a single-bay biplane with a fuselage constructed of steel tubing, covered with doped fabric. The wings were constructed of wood. It was 22 feet, 1 inch (6.731 meters) long with a wingspan of 27 feet, 4 inches (8.331 meters) and height of 8 feet, 6 inches (2.591 meters). It had an empty wight of 1,414 pounds (641 kilograms) and gross weight of 2,128 pounds (965 kilograms). Only one XF3W-1 was built.
The XF3W-1 was designed to use the new air-cooled, supercharged 1,176.036-cubic-inch-displacement (19.272 liters) Wright Aeronautical Division R-1200 Simoon 9-cylinder radial engine, which was rated at 350 horsepower at 1,900 r.p.m. The R-1200 weighed 640 pounds (290 kilograms).
Pratt & Whitney Wasp A Serial Number 1, (R-1340), Radial 9 Engine at the National Air and Space Museum. (NASM)
After taking delivery of the prototype, the Navy installed the number two Pratt & Whitney Wasp A engine. (The XF3W-1 was the first airplane to fly with a Pratt & Whitney Wasp engine, 5 May 1926.) The Wasp A was an air-cooled, supercharged, 1,343.8-cubic-inch displacement (22.021 liters) nine-cylinder radial direct-drive engine with a compression ratio of 5.25:1. It was rated at 410 horsepower at 1,900 r.p.m. at Sea Level, burning 58 octane gasoline. The Wasp A was 3 feet, 6.63 inches (1.083 meters) long, 4 feet, 3.44 inches (1.307 meters) in diameter, and weighed 745 pounds (338 kilograms).
The National Advisory Committee for Aeronautics (NACA) used the XF3W-1 for engine and cowling tests at the Langley Memorial Aeronautical Laboratory (LMAL), Langley Field, Hampton, Virginia. Which engine was installed at the time of Lieutenant Soucek’s record flight is uncertain.
The XF3W-1’s engine was supercharged by a NACA Model 2E Roots-type supercharger, built by the Allison Engineering Company. This supercharger, serial number 1, is in the collection of the National Air and Space Museum.
The XF3W-1 was also configured as a float plane.
162 m.p.h., 38,560′
Wright Aeronautical XF3W-1 Apache, Bu. No. A7223, at NACA Langley Memorial Aeronautical Laboratory, Hampton, Virginia, 28 August 1926. (NASA)
Apollo Soucek was born 24 February 1897, at Lamont, Oklahoma. He was a son of Bohemian immigrants, Johann Grothard Soucek, a blacksmith, and Ludmila Pishny Soucek. He had a brother, two years his junior, named Zeus.
Midshipman Apollo Soucek, U.S. Naval Academy, 1921. (The Lucky Bag)
Soucek received an appointment as a midshipman at the United States Naval Academy, Annapolis Maryland. He entered on 9 June 1917 as a member of the Class of 1921. While at Annapolis, “Soakem” Soucek played baseball and football. In The Lucky Bag it was written, “When you want a man you can rely on and trust ’till there’s skating in Hell, just page old Soakem—he’s there with the goods.”
Midshipman Soucek graduated and was commissioned an ensign, United States Navy, with a date of precedence of 3 June 1921.
Ensign Soucek’s first assignment was aboard the New Mexico-class battleship, USS Mississippi (BB-41).
In February 1924, Ensign Soucek was transferred to the Naval Air Station, Pensacola, Florida, for flight instruction. He was designated a Naval Aviator in October 1924. He was promoted to lieutenant (junior grade) and assigned as assistant flight officer aboard the U.S. Navy’s first aircraft carrier, USS Langley (CV-1).
USS Langley (CV-1), 1922. (U.S. Navy)
Soucek was next transferred to Observation Squadron 1 (VO-1), Aircraft Squadrons, Battle Fleet, aboard USS Maryland (BB-46), a Colorado-class battleship. He had collateral duty as the ship’s assistant navigator.
In 1925, Lieutenant (j. g.) Souceck served aboard USS Aroostock (CM-3), a minesweeper which had been converted to an aircraft tender, and in 1926, was assigned to the Naval Aircraft Factory, Philadephia, Pennsylvania.
Lieutenant (j.g.) Soucek was promoted to lieutenant, 3 June 1927, and he began a tour of duty with the Bureau of Aeronautics, 29 June 1927. He specialized in engines in the Bureau’s Material Division.
Lieutenant Apollo Soucek married Miss Agnes Eleanor O’Connor at Washington, D.C., 27 May 1930.
In 1931, Lieutenant Soucek served with Fighting Squadron 1B (VF-1B). He returned to duty at the Naval Aircraft Factory in 1933.
Lieutenant Apollo Soucek, United States Navy, 16 March 1932. The airplane is a Boeing F4B-2, A8801, assigned to VF-1, USS Saratoga (CV- 3). Lieutenant Soucek is wearing the green uniform of a U.S. Naval Aviator. (U.S. Navy via Davis-Monthan Airfield Register)
In 1936, Lieutenant Souceck served aboard the aircraft carrier USS Ranger (CV-4).
USS Ranger (CV-4). (U.S. Navy)
Souceck was promoted to the rank of lieutenant commander, 3 June 1937, and was assigned as commanding officer of Fighting Squadron 2 (VF-2). In 1938, he returned to the Bureau of Aeronautics, working in both the Flight Division and the Personnel Division.
In 1940, Lieutenant Commander Soucek served as navigator aboard USS Yorktown (CV-5).
Souceck was promoted to the rank of commander, 27 August 1941. He was assigned as Air Officer aboard the Yorktown-class aircraft carrier, USS Hornet (CV-8). When the carrier’s executive officer was promoted, Commander Soucek was assigned as Hornet‘s executive officer, serving under Captain Marc A. Mitscher. Hornet participated in the Halsey-Doolittle Raid of 18 April 1942; the Battle of Midway; and the Solomons Campaign.
Commander Soucek was promoted to the rank of captain (temporary), 20 August 1942, with date of rank 20 June 1942.
Hornet was sunk at the Battle of the Santa Cruz Islands, 27 October 1942. Captain Soucek was awarded the Silver Star for his actions during the battle.
USS Hornet (CV-8) under attack during the Battle of the Santa Cruz Islands, 26 October 1942. (U.S. Navy)
Captain Soucek next was as assistant chief of staff for operations, U.S Pacific Fleet, then the Naval Air Training Command. He was promoted to the rank of rear admiral (temporary), 23 July 1944. After the war, reverted to the permanent rank of captain, with the 23 July 1944 date of rank.
On 27 October 1945, Captain Soucek became the first commanding officer of the Midway-class aircraft carrier, USS Franklin D. Roosevelt (CVB-42). He was appointed Commander, Carrier Division 14, in January 1946. He remained in command of Roosevelt until relieved, 2 March 1946.
USS Franklin D. Roosevelt (CVB-42), (U.S. Navy)
After leaving Roosevelt, Soucek was assigned as Commander Fleet Air Wing 1.
From July 1947 through 1949, Rear Admiral Soucek was Commander, Naval Air Test Center, Patuxent River, Maryland. In late 1949, he was Assistant Chief of Naval Operations for Aviation Plans, and then, in 1950, Director, Aviation Plans, in the Office of the Chief of Naval Operations.
In 1951 Rear Admiral Soucek was appointed Naval Attaché for Air at the United States Embassy, London, England. His wife, Agnes, died that year.
Soucek returned to combat during the Korean War. In 1952, he commanded Carrier Division 3 and Task Force 77 from his flagship, USS Boxer (CV-21). He was awarded the Distinguished Service Medal.
Two Vought F4U-5N Corsairs fly past USS Boxer (CV-21), off Korea, 4 September 1951. (U.S. Navy)
Rear Admiral Soucek became Chief, Bureau of Aeronautics, 18 June 1953.
In 1954, Rear Admiral Soucek became a member of the advisory board of the Smithsonian Institution National Air Museum, serving without compensation.
Soucek suffered a heart attack in February 1955. Unable to return to full duty, he was transferred to the Retired List on 1 July 1955.
Rear Admiral Apollo Soucek, United States Navy, died at his home in Washington, D.C., 19 July 1955. He was posthumously promoted to the rank of Vice Admiral. He was buried at the Arlington National Cemetery.
Lieutenant Commander George Clinton Watkins, United States Navy, set a World Altitude Record with a Grumman F11F-1F Super Tiger, 18 April 1958. (U.S. Navy)
16 April 1958: At Edwards Air Force Base, California, test pilot Lieutenant Commander George Clinton Watkins, United States Navy, set a Fédération Aéronautique Internationale (FAI) World Altitude Record of 23,449 meters (76,932 feet) ¹ with a Grumman F11F-1F Tiger, Bureau of Aeronautics serial number (Bu. No.) 138647.
Lieutenant Commander Watkins wore a David Clark Co. C-1 capstan-type partial-pressure suit with an International Latex Corporation (ILC Dover) K-1 helmet and face plate for protection at high altitudes.
The Valley Times reported:
Edwards Flier Sets Altitude Mark For Jets
By WALT KEESHAN JR. Valley Times Aviation Editor
EL CENTRO — The world’s altitude record for jet planes has been taken to the Antelope Valley by a Navy pilot dressed in a Mars-like suit who flew to the edge of space at 76,828.8 feet above Mojave.
This historic event, announced yesterday at the third annual Naval Air Weapons meet, staged in the Imperial Valley, brought the Distinguished Flying Cross to LCDR George C. Watkins, 37, who gave America the first altitude record it has held in 28 years. The flight was Wednesday.
Flying a F-11-1F Super Tiger, Watkins, of Pasadena, proved that jet airplanes can operate for a brief period of time 14 miles above earth—a period long enough to launch missiles into space.
45-Minute Flight
The actual flight which took Watkins up into the Ozonosphere lasted 45 minutes and covered a distance of 500 miles stretching from Needles to Mojave. He stayed at the record altitude for four seconds.
Watkins flew in a patch like a ballistic missile strapped in his swept-wing fighter, Outside the snug cockpit the temperature was 69 degrees below zero.
The swept-wing fighter shot from the Edwards Air Force Base runway loaded with 6,270 pounds of fuel and raced for Needles, 210 miles to the east.
Making a U-turn 30 miles beyond Needles, Watkins poured on teh speed and dashed toward Edwards with his throttle wide open at 1,260 miles per hour (Mach 1.9) at 40,000 feet.
Cruise Climb
Watkins slowly began to cruise climb, rising 1,500 feet a minute until he had only 400 pounds of fuel left. Rising skyward the afterburner cut off at 65,000 feet and he was on his way.
The altimeter began to spin crazily and all the energy he had built up pushed him up at a rate of 50,000 feet a minute in what pilots call a zoom-glide.
As he eased over the top at 76,828.8 feet, the Super Tiger was only going 100 miles an hour and Watkins was experiencing zero-gravity for more than a minute—an uncomfortable 60 seconds when he became weightless and objects began floating in the cockpit.
Outside the sky was very deep blue. He was the first jet pilot to see this new color. “I hardly had time to look,” Watkins said.
Lands Without Fuel
During the record run he had to hit a five mile square area in the sky so that radar cameras on the ground could officially record his record. He landed without enough fuel to taxi back to the hangar.
The record run was part of “Operation Apollo” now being staged at Edwards. He will try for 84,000 feet probably the first part of next week when the temperature gets down to a minus 79 degrees outside. The colder it is the faster he can go.
The Air Force and the Navy are both interested in this altitude mark because solid missiles could be launched from these sky platforms and fired at tremendously increased distances—maybe put in orbit.
The record Watkins broke was 70,308 feet set by the British last year in a combination jet and rocket powered airplane.
—Valley Times, Vol. 21, No. 93, Friday 18 April 1958, Page 1, Column 3, and Page 2, Column 3
Watkins’ flight was observed by the National Aeronautic Association and certified by the Fédération Aéronautique Internationale (FAI). For his record-setting flight, Lieutenant Commander Watkins was presented the Distinguished Flying Cross by Vice Admiral William F. Davis, Jr., Deputy Chief of Operations for Air.
Grumman F11F-1F Tiger, Bu. No. 138647, in flight near Edwards AFB, California. (U.S. Navy)
The F11F-1F Tiger was a higher performance variant of the U.S. Navy F11F single-seat, single-engine swept wing aircraft carrier-based supersonic fighter. The last two regular production F11F-1 Tigers, Bu. Nos. 138646 and 138647 were completed as F11F-2s, with the standard Westinghouse J65-WE-18 turbojet engine replaced by a more powerful General Electric YJ79-GE-3, which produced 9,300 pounds of thrust (41.37 kilonewtons), or 14,350 pounds (63.83 kilonewtons) with afterburner. The air intakes on each side of the fuselage were longer and had a larger area to provide greater airflow for the new engine. After testing, the fuselage was lengthened 1 foot, 1½ inches (0.343 meters) and an upgraded J79 engine installed. The first “Super Tiger” was damaged beyond repair in a takeoff accident and was “expended” as a training aid for fire fighters.
The U.S. Navy determined that the F11F-2 was too heavy for operation aboard carriers and did not place any orders. The designation was changed from F11F-2 to F11F-1F, and later, to F-11B, although the remaining aircraft was no longer flying by that time.
The F11F-1F Tiger is 48 feet, 0.5 inches (14.643 meters) long with a wingspan of 31 feet, 7.5 inches (9.639 meters) and overall height of 13 feet, 10 inches (4.216 meters). The Super Tiger has an empty weight of 16,457 pounds (7,465 kilograms) and maximum takeoff weight of 26,086 pounds (11,832 kilograms).
The General Electric J79 is a single-spool axial-flow afterburning turbojet, which used a 17-stage compressor and 3-stage turbine. The engine is 17 feet, 3.5 inches (5.271 meters) long, 3 feet, 2.3 inches (0.973 meters) in diameter, and weighs 3,325 pounds (1,508 kilograms).
With the YJ79 engine, the F11F-1F has a maximum speed of 836 miles per hour (1,345 kilometers per hour) at Sea Level, 1,325 miles per hour (2,132 kilometers per hour) at 35,000 feet (10,668 meters) and 1,400 miles per hour (2,253 kilometers per hour) at 40,000 feet (12,192 meters). Cruise speed is 580 miles per hour (933 kilometers per hour). It had an initial rate of climb of 8,950 feet per minute (45.5 meters per second) and service ceiling of 50,300 feet (15,331 meters). Range with internal fuel was 1,136 miles (1,828 kilometers).
The Tiger’s armament consisted of four 20 mm Colt Mk 12 autocannon with 125 rounds of ammunition per gun, and four AIM-9 Sidewinder heat-seeking missiles.
The single remaining F11F-1F, Bu. No. 138647, is on static display at the Naval Air Weapons center, China Lake, California.
George Clinton Watkins was born at Alhambra, California, 10 March 1921, the third of seven children of Edward Francis Watkins, a purchasing agent for the Edison Company, and Louise Whipple Ward Watkins. (Mrs. Watkins was a candidate for election to the United States Senate in 1938.) George’s brother, James, would later serve as Chief of Naval Operations.
George was educated at the Army and Navy Academy, Carlsbad, California, and at The Citadel, the Military College of South Carolina, before being appointed to the United States Naval Academy, Annapolis, Maryland. He entered the Academy 3 July 1940. He graduated and was commissioned as an Ensign, United States Navy, 9 June 1943. He was then assigned as a gunnery officer aboard the battleship, USS Pennsylvania (BB-38). Ensign Watkins was promoted to the rank of lieutenant (junior grade), 1 September 1944.
Near the end of the war, Lieutenant (j.g.) Watkins entered pilot training. He graduated and was awarded the gold wings of a Naval Aviator in 1945. He was promoted to the rank of lieutenant, 1 April 1946. His first operational assignment was as pilot of a Grumman TBF Avenger torpedo bomber with VT-41. In 1950 Watkins attended the Navy’s test pilot school at NAS Patuxent River on the Chesapeake Bay, Maryland. Among his classmates were future astronauts John H. Glenn and Alan B. Shepard. Lieutenant Watkins served as a fighter pilot during the Korean War, flying the Grumman F9F-6 with VF-24, aboard USS Yorktown (CVA-10)then returned to duty as a test pilot. On 1 January 1954, he was promoted to lieutenant commander.
George Watkins was the first U.S. Navy pilot to fly higher than 60,000 feet (18,288 meters), and 70,000 feet (21,336 meters). In 1956, he set a speed record of 1,210 miles per hour (1,947.3 kilometers per hour). Lieutenant Commander Watkins was promoted to the rank of commander, 1 March 1958. He was assigned as Commander Air Group 13 in August 1961. On 9 May 1962, Commander Watkins became the first U.S. Navy pilot to have made 1,000 aircraft carrier landings.
Commander Watkins was promoted to the rank of captain, 1 July 1964. Captain Watkins served in planning assignments at the Pentagon, and was an aide to Presidents Kennedy, Johnson and Nixon.
USS Mars (AFS-1). (United States Navy)Captain George Clinton Watkins, United States Navy (1921–2005)
From 14 December 1965 to 12 December 1966, Captain Watkins commanded USS Mars (AFS-1), a combat stores ship. (Experience commanding a deep draft ship was a requirement before serving as captain of an aircraft carrier).
He later served as a technical adviser for the 1970 20th Century Fox/Toei Company movie, “Tora! Tora! Tora!,” about the Japanese attack against Pearl Harbor which brought the United States of America into World War II.
By the time Captain Watkins retired from the Navy in 1973, he had flown more than 200 aircraft types, made 1,418 landings on 37 aircraft carriers, and logged more than 16,000 flight hours. He continued flying after he retired, operating sailplane schools at Santa Monica and Lompoc, California. He had flown more than 21,000 hours during 26,000 flights.
Captain Watkins married Miss Monica Agnes Dobbyn, 20 years his junior, at Virginia Beach, Virginia, 9 June 1979. Mrs. Watkins is the author of Cats Have Angels Too, Angelaura & Company, 1998.
Captain Watkins died 18 September 2005 at the age of 84 years. His ashes were spread at sea from the deck of a United States Navy aircraft carrier.
Jackie Cochran with her North American Aviation P-51C Mustang, N5528N, circa December 1949. (FAI)
9 April 1951: Jackie Cochran set a Fédération Aéronautique Internationale (FAI) world record and National Aeronautic Association U.S. National Record on 9 April 1951, flying her North American Aviation P-51C Mustang, N5528N, to an average speed of 464.374 miles per hour (747.338 kilometers per hour) over a straight 16 kilometer (9.942 miles) high-altitude course at Indio, California.¹
National Aeronautic Association Certificate of Record in the San Diego Air and Space Museum Archive. (Bryan R. Swopes)
Thunderbird was Jackie Cochran’s third P-51 Mustang. She had purchased it from Academy Award-winning actor and World War II B-24 wing commander James M. Stewart, 19 December 1949. It was painted cobalt blue with gold lettering and trim.
That same day, Jackie Cochran flew her new airplane to two Fédération Aéronautique Internationale (FAI) World Records for Speed Over a 500 kilometer Closed Circuit Without Payload, and a U.S. National Aeronautic Association record, with an average speed of 703.275 kilometers per hour (436.995 miles per hour).
Thunderbird had won the 1949 Bendix Trophy Race from Rosamond Dry Lake, California, to Cleveland Municipal Airport, Ohio, with pilot Joe De Bona in the cockpit.
According to Civil Aviation Administration records, N5528N had been “assembled from components of other aircraft of the same type.” It has no USAAC serial number or North American Aviation serial number. The CAA designated it as a P-51C and assigned 2925 as its serial number. It was certificated in the Experimental category and registered N5528N.
Thunderbird, Jackie Cochran’s North American P-51C Mustang, N5528N, circa 1951. (FAI)
The North American Aviation P-51 Mustang is a single-place, single-engine long range fighter. It is a low-wing monoplane with retractable landing gear and is of all-metal construction. The fighter is powered by a liquid-cooled V-12 engine. It was originally produced for the United Kingdom’s Royal Air Force as the Mustang Mk.I. Two examples were provided to the U.S. Army Air Corps, designated XP-51. This resulted in orders for the P-51A and A-36 Apache dive bomber variant. These early Mustangs were powered by the Allison V-1750 engine driving a three-bladed propeller, which also powered the Lockheed P-38 Lightning and Curtiss P-40 Warhawk.
In 1942, soon after the first production Mustang Mk.I arrived in England, Rolls-Royce began experimenting with a borrowed airplane, AM121, in which they installed the Supermarine Spitfire’s Merlin 61 engine. This resulted in an airplane of superior performance.
In the United States, the Packard Motor Car Company of Detroit, Michigan, had begun building Merlin engines under license from Rolls-Royce. These American engines were designated V-1650. North American modified two P-51s from the production line to install the Packard V-1650-3. These were designated XP-51B. Testing revealed that the new variant was so good that the Army Air Corps limited its order for P-51As to 310 airplanes and production was changed to the P-51B.
The P-51B and P-51C are virtually Identical. The P-51Bs were built by North American Aviation, Inc., at Inglewood, California. P-51Cs were built at North American’s Dallas, Texas plant. They were 32 feet, 2.97 inches (9.829 meters) long, with a wingspan of 37 feet, 0.31-inch (11.282 meters) and overall height of 13 feet, 8 inches (4.167 meters) high. The fighter had an empty weight of 6,985 pounds (3,168 kilograms) and a maximum gross weight of 11,800 pounds (5,352 kilograms).
Packard Motor Car Company V-1650-7 Merlin, liquid-cooled, supercharged SOHC 60° V-12 aircraft engine at the Smithsonian Institution National Air and Space Museum. This engine weighs 905 pounds (411 kilograms) and produces 1,490 horsepower at 3,000 r.p.m. (NASM)
P-51Bs and Cs were powered by a right-hand tractor, liquid-cooled, supercharged, 1,649-cubic-inch-displacement (27.04-liter) Packard V-1650-3 or -7 Merlin single overhead cam (SOHC) 60° V-12 engine which produced 1,380 horsepower at Sea Level, turning 3,000 r.p.m at 60 inches of manifold pressure (V-1650-3) or 1,490 horsepower at Sea Level, turning 3,000 r.p.m. at 61 inches of manifold pressure (V-1650-7). (Military Power rating, 15 minute limit.) These were license-built versions of the Rolls-Royce Merlin 63 and 66. The engine drove a four-bladed Hamilton Standard Hydromatic constant-speed propeller with a diameter of 11 feet, 2 inches (3.404 meters) through a 0.479:1 gear reduction.
North American Aviation P-51B-1-NA Mustang in flight. (Air Force Historical Research Agency)
The P-51B/C had a cruise speed of 362 miles per hour (583 kilometers per hour) and the maximum speed was 439 miles per hour (707 kilometers per hour) at 25,000 feet (7,620 meters). The service ceiling was 41,900 feet (12,771 meters). With internal fuel, the combat range was 755 miles (1,215 kilometers).
In military service, armament consisted of four air-cooled Browning AN-M2 .50-caliber machine guns, mounted two in each wing, with 350 rounds per gun for the inboard guns and 280 rounds per gun for the outboard.
1,988 P-51B Mustangs were built at North American’s Inglewood, California plant and another 1,750 P-51Cs were produced at Dallas, Texas. This was nearly 23% of the total P-51 production.
North American Aviation P-51B-1-NA Mustang 43-12491 at NACA Langley Field, Virginia, 1945. (NASA)
Jackie Cochran with her Seversky AP-7A, NX1384, prior to her speed record attempt. (San Diego Air and Space Museum Archive)
6 April 1940: Flying her Seversky AP-7A, NX1384, Jackie Cochran set a Fédération Aéronautique Internationale and National Aeronautic Association speed record over a 2,000 kilometer (1,242.742 miles) course from Mount Wilson, California (northeast of Los Angeles) to Mesa Giganta, New Mexico (west of Albuquerque) with an average speed of 533.845 kilometers per hour (331.716 miles per hour).¹
National Aeronautic Association Certificate of Record in the San Diego Air and Space Museum Archive. (Bryan R. Swopes)
The Seversky AP-7 was an improved civil version of the Seversky P-35 fighter, which was the first U.S. Army Air Corps single engine airplane to feature all-metal construction, an enclosed cockpit and retractable landing gear. It was designed by Major Alexander Nikolaievich Prokofiev de Seversky, a World War I Russian fighter ace.
Jackie Cochran paints her race number, 13, of the fuselage of her Seversky AP-7. (San Diego Air and Space Museum Archives)
Cochran’s AP-7A was a specially-built racer, modified from the original AP-7 with a new, thinner, wing and different landing gear arrangement. It was powered by a an air-cooled, supercharged, 1,829.39-cubic-inch-displacement (29.978 liter) Pratt & Whitney Twin Wasp S1B3-G (R-1830-11) two-row 14-cylinder radial engine rated at 850 horsepower at 2,450 r.p.m. at 5,000 feet (1,524 meters), and 1,000 horsepower at 2,600 r.p.m. for take off. The engine turned a three-bladed Hamilton-Standard controllable-pitch propeller through a 3:2 gear reduction. The R-1830-11 was 4 feet, 8.66 inches (1.439 meters) long with a diameter of 4 feet, 0.00 inches (1.219 meters), and weighed 1,320 pounds (599 kilograms).
This is the same airplane in which Jackie Cochran won the 1938 Bendix Trophy Race.
Jackie Cochran’s Seversky AP-7A, NX1384, at the Union Air Terminal, Burbank, California, 1940. (Bill Larkins/Wikipedia)