7 April 1924

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Major de Infanteria aviador António Jacinto da Silva Brito Pais and tenente de Engenharia José Manuel Sarmento de Beires, Serviço Aeronáutico Militar.

7 April 1924: At 6:02 a.m., local time, Major de Infanteria aviador António Jacinto da Silva Brito Pais and tenente de Engenharia José Manuel Sarmento de Beires departed Vila Nova Milfontes on the western coast of Portugal, enroute to Macau, the Portuguese colony on the southeast coast of China. This was intended as a step toward an eventual around-the-world flight, a reminder of the Portuguese voyages of discovery of the 15th and 16th centuries.

Bréguet Type 16 Bn. 2, Pátria.

Their route of flight was:

Stage 1: 7 April, Vila Nova Milfontes, Portugal, to Málaga, Andalusia, Spain. 4 hours, 30 minutes (4:30).

Stage 2: 9 April, Málaga to Oran, French Algeria. 2:45.

Stage 3: 12 April, Oran to Tunis, French Tunisia. 6:50.

Stage 4: 14 April, Tunis to Tripoli, Italian Libya. 6:50.

Stage 5: 16 April, Tripoli to Al-Khums, Italian Libya. 4:00.

Stage 6: 18 April, Al-Khums to Benghazi, Italian Libya. 6:18.

Stage 7: 20 April, Benghazi to Cairo, Kingdom of Egypt. 9:15.

Stage 8: 23 April, Cairo to Riyaq, Greater Lebanon. 5:10.

Stage 9: 26 April, Riyaq to Baghdad, Kingdom of Iraq. 6:00.

Stage 10: 27 April, Baghdad to Bushehr, Persia. 6:05.

Stage 11: 2 May, Bushehr to Bandar Abbas, Persia. 4:31.

Stage 12: 3 May, Bandar Abbas to Chabahar, Persia. 3:30.

Stage 13: 4 May, Chabahar to Karachi, Sindh. 6:29.

Stage 14: 7 May, Karachi to N. 26° 13′, E. 72° 58″ (near Pipar Road, Jodhpur, Rajputana). 5:20.

Route of the Lisboa–Macau Raid 1924

On 7 May, Pátria departed Karachi (in what is now Pakistan) at 6:18 a.m., enroute to Agra, British India. During the flight, water used as engine coolant began leaking from the radiator and the engine temperature started to rise, requiring a reduction in power. Eventually, the airplane was unable to maintain altitude and the crew began a gradual descent. Near the village of Pipar Road, they sighted an open field that seemed suitable for landing. Just before touchdown the airplane was caught by a gust of wind and crashed. The crew received only minor injuries, but their airplane was heavily damaged. It was impractical to repair so far from a major city, so it was abandoned.

Brito Pais, Sarmento de Beires and Gouveia walked back to Karachi, where they continued their journey by train.

The wreck of Pátria was eventually shipped back to Portugal. Its Renault 12 Fe V-12 engine is in the collection of the Museo do Ar at Base Aérea de Sintra, Sintra, Portugal.

De Havilland DH.9A Pátria II.

Several weeks later, they acquired another airplane, a 1920 de Havilland DH.9A powered by a Liberty L-12 engine, which they named Pátria II.

Pátria II could carry only two, so Gouveia had to continue by train. In 10 additional stages, Brito Pais and Sarmento de Beires finally arrived at Macau, 20 June 1924, but after overflying the city, crashed inside Chinese territory. The two aviators, again not seriously hurt, had to walk until they reached the British colony of Hong Kong. Their journey covered 16,760 kilometers (10,414 miles) in 117 hours, 41 minutes flight time.

Bréguet Br 16 Bn2 Pátria photographed in Iraq, 26 or 27 April 1924. (San Diego Air and Space Museum Archives)

The airplane used for the first half of this journey was an Avion Bréguet Type 16 Bn. 2 (also designated Bre. 16 Bn. 2), a military aircraft produced by France. The airplane had been purchased by the government of Portugal for a series of long-range flights based on the recommendation of Brito Pais and Sarmento de Beres, both officers in the Serviço Aeronáutico Militar, Portugal’s military air service. It was built in France by the Société Anonyme des Ateliers d’Aviation Louis Bréguet and shipped, knocked down, to Amadora, near Lisbon, where it was assembled. It made its first flight 22 September 1921.

Brito Pais named the airplane Pátria. The phrase, ESTA É A DITOSA PÁTRIA MINHA AMADA, was painted on both sides of the fuselage. This is a line from a poem, Os Luisíades, written by Luís Vaz de Camõs and published in 1572. Translated, it means, “This is my beloved Homeland.”

In November, the new airplane was seriously damaged in a storm. Repairs were not begun until June 1922. On 28 June 1923, the Bre. 16 crashed, but was again repaired and made its next flight 26 October 1923.

The Bréguet Type 16 Bn. 2 is a single-engine, two-place, three-bay biplane, designed toward the end of World War I as a night bomber. It had fixed, two-wheel landing gear with a tail skid. The Bre. 16 Bn. 2 was 9.550 meters (31 feet, 4 inches) long, with a wingspan of 17.000 meters (55 feet, 9.3 inches), and chord of  2.350 meters (7 feet, 8.5 inches). The wings were of equal span. The upper wing was staggered slightly behind lower wing. Both upper and lower wings are equipped with ailerons. The wings are swept aft approximately 3°. The lower wing has no dihedral, while the upper wing has approximately 3° dihedral.  Wing area is variously reported as 72, 73.5 or 75.50 square meters (775, 791.1 or 812.68 square feet). The bomber had an empty weight of 1,268 kilograms (2,862 pounds) and gross weight of 2,398 kilograms (5,287 pounds). Bréguet informed Brito Pais and Sarmento de Beires that the Type 16’s structure was capable of safely supporting 2,719.5 kilograms (5,995.5 pounds) total weight.

A Renault 12 Fe SOHC V-12 engine in the collection of the Smithsonian Institution, National Air and Space Museum. (NASM)

The Type 16 was powered by a water-cooled, normally aspirated, 22.089 liter (1,347.973 cubic inch Renault 12 Fe, a 50° single-overhead-cam, direct-drive V-12 engine with 2 valves per cylinder and a compression ratio of 5.0:1. The 12 Fe produced 305 chavel vapeur (301 horsepower) at 1,550 r.p.m., and 312 chavel vapeur (308 horsepower) at 1,600 r.p.m. The engine was 2.057 meters (6 feet, 9 inches) long, 1.124 meters (3 feet, 8.25 inches) wide and 1.372 meters (3 feet, 8.8 inches) high. It weighed 369 kilograms (813.5 pounds).

The Bre. 16 Bn. 2 had a cruise speed of 140 kilometers per hour (87 miles per hour) and maximum speed of 160 kilometers per hour (99 miles per hour) at Sea Level. Its service ceiling was 4,600 meters (15,092 feet), and normal range was 900 kilometers (559 miles).

Approximately 200 Type 16 airplanes were built.

© 2017, Bryan R. Swopes

6 April 1959

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Colonel Edward H. Taylor’s record-setting McDonnell RF-101C-75-MC Voodoo, 56-0119, at Edwards AFB, April 1959. (U.S. Air Force)
Colonel Edward H. Taylor, USAF, with McDonnell RF-101C Voodoo. (U.S. Air Force via aeroweb)

6 April 1959: At Edwards Air Force Base, in the high desert of southern California, Colonel Edward Hamilton Taylor, United States Air Force, set a Fédération Aéronautique Internationale (FAI) World Record for Speed Over a 1000 Kilometer Course of 1,126.62 kilometers per hour (700.05 miles per hour),¹ flying a McDonnell RF-101C-75-MC Voodoo, serial number 56-0119.

The F-101 Voodoo was the first production airplane capable of speeds over 1,000 miles per hour (1,609.34 kilometers per hour). Colonel Taylor’s RF-101C was an unarmed photographic reconnaissance variant.

Nine days later, Captain George A. Edwards, Jr., flew another RF-101C to a World Record for Speed Over a Closed Circuit of 500 Kilometers of 1,313.677 kilometers per hour (816.281 miles per hour).²

Ed Taylor, 1940 (The Cactus)

Edward Hamilton Taylor was born 8 October 1920 at Lone Oak, Texas. He was the son of Dr. Edward and Mrs. Viola Taylor. He graduated from Austin High School, Austin, Texas, and attended the University of Texas in Austin.

Taylor enlisted in the Texas National Guard on his eighteenth birthday, 8 October 1938. He was appointed an aviation cadet, Air Corps, Army of the United States (A.U.S.), 7 February 1942, and was commissioned as a second lieutenant, 10 November 1942. He was promoted to first lieutenant, 9 September 1943, and captain, 6 April 1944. On 6 April 1945, Taylor was promoted to major, A.U.S. Following World War II, Taylor reverted to his permanent rank of first lieutenant, Air Reserve.

Miss Cordelia Brown Harwood, (Holbrook Studio/Valley Morning Star)

Edward Hamilton Taylor married Miss Cordelia Brown Harwood at St. Albin’s Church in Austin, 31 August 1946. They would have four sons.

Edward Taylor was a combat veteran of World War II, the Korean War and the Vietnam War, flying reconnaissance missions over Saipan and Iwo Jima in the Lockheed P-38 Lightning, F-80 fighters in Korea and over North Vietnam in both the RF-101C and the RF-4C Phantom II.

His final Air Force assignment was as Director of Aerospace Vehicles Training, Randolph Air Force Base, Texas. Colonel Taylor retired from the Air Force 1 January 1968 after 29 years of military service.

A Command Pilot with over 5,000 hours of flight experience, he had been twice awarded the Legion of Merit; the Distinguished Flying Cross, also twice, and fifteen Air Medals.

Colonel Edward Hamiton Taylor, United States Air Force (Retired) died  at Austin, Texas 17 June 2007. He was buried at the Austin Memorial Park Cemetery, Austin, Texas.

His record-setting Voodoo had been on display at Bergstrom AFB, Austin, Texas, Colonel Taylor’s home town. The airplane’s nose section with its reconnaissance array is now in the collection of the National Air and Space Museum.

The world record setting McDonnell RF-101C-75-MC Voodoo 56-0119 at Bergstrom Air Force Base, Austin, Texas, 1978. (Ron Downey/Aviation Archives)

The RF-101C Voodoo was an unarmed reconnaissance variant of the F-101C fighter. It was 69 feet, 4 inches (21.133 meters) long with a wingspan of 39 feet, 8 inches (12.090 meters). The height was 18 feet (5.486 meters). Empty weight for the RF-101C was 26,136 pounds (11,855 kilograms), with a maximum takeoff weight of 51,000 pounds (23,133 kilograms).

McDonnell RF-101C-75-MC Voodoo 56-0119 (NASM)

The F-101C was powered by two Pratt & Whitney J57-P-13 afterburning turbojet engines. The J57 was a two-spool axial-flow turbojet which had a 16-stage compressor section (9 low- and 7 high-pressure stages), and a 3-stage turbine (1 high- and 2 low-pressure stages). The J57-P-13 was rated at 10,200 pounds of thrust (45.37 kilonewtons), and 15,800 pounds (70.28 kilonewtons) with afterburner. It was 17 feet, 7.0 inches (5.359 meters) long, 3 feet, 4.3 inches (1.024 meters) in diameter, and weighed 5,25 pounds (2,279 kilograms).

The F-101C had a maximum speed of 1,012 miles per hour (1,629 kilometers per hour) at 35,000 feet (10,668 meters). The service ceiling was 55,300 feet (16,855 meters).

The Voodoo could carry up to three drop tanks, giving a total fuel capacity of 3,150 gallons (11,294 liters) and a maximum range of 2,145 miles (3,452 kilometers).

The RF-101C carried six cameras in its nose. Two Fairchild KA-1s were aimed downward, with four KA-2s facing forward, down and to each side.

Beginning in 1954, McDonnell Aircraft Corporation built 807 F-101 Voodoos. 166 of these were the RF-101C variant. This was the only F-101 Voodoo variant to be used in combat during the Vietnam War. The RF-101C remained in service with the U.S. Air Force until 1979.

¹ FAI Record File Number 8928

² FAI Record File Number 8858

© 2019, Bryan R. Swopes

6 April 1955, 18:00:04.1 UTC

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Operation Teapot HA fireball, 6 April 1955. (U.S. Air Force)
Operation Teapot HA fireball, 6 April 1955. (U.S. Air Force)

6 April 1955: At 10:00:04.1 a.m. local time (1800 GMT), a Convair B-36H assigned to the 4925th Test Group (Atomic) at Kirtland Air Force Base, New Mexico dropped an atomic weapon from 42,000 feet (12,802 meters) over the Nevada Test Site, Area 1. The bomb was parachute-retarded to slow its fall so that the bomber could escape its blast effects.

The weapon was a test device produced by the Los Alamos Scientific Laboratory to investigate its use as an air-to-air anti-aircraft missile warhead. The bomb detonated at 36,620 feet (11,162 meters) with an explosive force of 3.2 kilotons. Because of the altitude of the explosion, there was no significant fallout.

All test observers (with goggles) agreed that the fireball appeared more intensely bright than in events of similar yield fired at lower altitude.

—United States High-Altitude Test Experiences by Herman Hoerlin, Los Alamos Scientific Laboratory, June 1976, at Page 12.

Captain William L. Hickey, USAF, pilot of a Convair B-36 Peacemaker very long-range heavy bomber during Operation Teapot, 1955. Captain Hickey is wearing a David Clark Co. S-2 capstan-type partial-pressure suit and K-1 helmet for protection at high altitude. (U.S. Air Force via Jet Pilot Overseas)
Captain William L. Hickey, USAF, pilot of a Convair B-36 Peacemaker very long-range heavy bomber during Operation Teapot, 1955. Captain Hickey is wearing a David Clark Co. S-2 capstan-type partial-pressure suit and K-1 helmet for protection at high altitude. (Jet Pilot Overseas)

The warhead was designed at the Los Alamos Scientific Laboratory (LASL) in New Mexico and was similar to the Wasp Prime device, which had been detonated earlier in the Operation Teapot test series. It used a spherical implosion system. The warhead was a 17-inch (43.2 centimeters) diameter sphere weighing approximately 125 pounds (56.7 kilograms). It was placed inside a Mark 5 bomb case which weighed 1,085 pounds (492.2 kilograms).

This was the only bomb dropped by parachute at the Nevada Test Site.

Flight crew of a Convair B-36 Peacemaker, 4925th Test Group (Atomic) during Operation Teapot, 1955. The crewmen are wearing David Clark Co. S-2 capstan-type partial-pressure suits for protection at high altitude. The two white helmets are early K-1 "split shell" 2-piece helmets, while the green helmets are later K-1 1-piece models. (U.S. Air Force via Jet Pilot Overseas)
Flight crew of a Convair B-36 Peacemaker, 4925th Test Group (Atomic) during Operation Teapot, 1955. The crewmen are wearing David Clark Co. S-2 capstan-type partial-pressure suits for protection at high altitude. The two white helmets are early K-1 “split shell” two-piece helmets, while the green helmets are later K-1 one-piece models. (Jet Pilot Overseas)

The Convair B-36H Peacemaker was the definitive version of the ten engine bomber, with 156 B-36H/RB-36H built out of the total production of 383 Peacemakers. It is similar to the previous B-36F variant, though with a second flight engineer’s position, a revised crew compartment, and improved radar controlling the two 20 mm autocannons in the tail turret.

The B-36H was 162 feet, 1 inch (49.403 meters) long with a wingspan of 230 feet (70.104 meters) and overall height of 46 feet, 8 inches (14.224 meters). The total area of its wings was 4,772 square feet (443.3 square meters). The wings’ leading edges were swept aft 15° 5′ 39″. Their angle of incidence was 3°, with -2° twist and 2° dihedral. The empty weight of the B-36H was 165,887pounds (75,245 kilograms) and the maximum takeoff weight is 357,500 pounds (162,159 kilograms).

Three flight crewmen don their parachutes before boarding the B-36H Peacemaker for Operation Teapot HA, 5 April 1955. The automobile behind them is a 1955 Chevrolet Bel Air 4-door sedan. (U.S. Air Force)
Three flight crewmen don their parachutes before boarding the B-36H Peacemaker for Operation Teapot HA, 5 April 1955. The automobile behind them is a 1955 Chevrolet Bel Air 4-door sedan. (U.S. Air Force)

The B-36H has ten engines. There are six air-cooled, supercharged 4,362.49 cubic-inch-displacement (71.49 liter) Pratt & Whitney Wasp Major C6 (R-4360-53) four-row, 28-cylinder radial engines placed inside the wings in a pusher configuration. These had a compression ratio of 6.7:1 and required 115/145 aviation gasoline. The R-4360-53 had a Normal Power rating of 2,800 horsepower at 2,600 r.p.m. Its Military Power rating was 3,500 horsepower at 2,800 r.p.m., and 3,800 horsepower at 2,800 r.p.m. with water injection—the same for Takeoff. The engines turned three-bladed Curtiss Electric constant-speed, reversible propellers with a diameter of 19 feet, 0 inches (5.791 meters) through a 0.375:1 gear reduction. The R-4360-53 is 9 feet, 9.00 inches (2.972 meters) long, 4 feet, 7.00 inches (1.397 meters) in diameter, and weighs 4,040 pounds (1,832.5 kilograms).

A smoke ring formed following the detonation of the Operation Teapot HA test. Contrails of the test aircraft are visible. (U.S. Air Force)

Four General Electric J47-GE-19 turbojet engines are suspended under the wings in two-engine pods. The J47 is a  single-shaft axial-flow turbojet engine with a 12-stage compressor section, 8 combustion chambers, and single-stage turbine. The J47-GE-19 was modified to run on gasoline and was rated at 5,200 pounds of thrust (23.131 kilonewtons).

The B-36H was the fastest variant of the Peacemaker series, with a cruise speed of  216 knots (249 miles per hour/400 kilometers per hour) and a maximum speed of 382 knots (440 miles per hour/707 kilometers per hour) at 35,500 feet (10,820 meters). The service ceiling was 47,000 feet (14,326 meters) and its combat radius was 3,190 nautical miles (3,671 statute miles/5,908 kilometers). The ferry range was 7,120 nautical miles (8,194 statute miles/13,186 kilometers).

Convair RB-36H-40-CF 51-13741 Featherweight III. (U.S. Air Force)

The B-36H has six remotely-controlled retractable gun turrets mounting two M24A1 20 mm autocannon, each, with 600 rounds of ammunition per gun. The tail turret was radar-controlled, and another 2 guns were mounted in the nose.

The B-36 was designed during World War II, when nuclear weapons were unknown to the manufacturer. The bomber was built to carry up to 86,000 pounds (39,009 kilograms) of conventional bombs in fours bomb bays. It could carry two 43,000 pound ( kilogram) T-12 Cloudmakers, a conventional explosive earth-penetrating bomb, or several Mk.15 thermonuclear bombs. By combining the bomb bays, one Mk.17 25-megaton thermonuclear bomb could be carried.

This Convair RB-36D-5-CF, 49-2686, is similar in appearance to the B-36H used in Operation Teapot HA. (U.S. Air Force)
This Convair RB-36D-5-CF, 49-2686, is similar in appearance to the B-36H used in Operation Teapot HA. (U.S. Air Force)

© 2019, Bryan R. Swopes

11 March–6 April 1949

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Lieutenant Stewart R. Graham, USCG, in cockpit of Sikorsky HNS-1 near Gander, Newfoundland, September 1946. (U.S. Coast Guard)
Lieutenant Stewart R. Graham, USCG, in cockpit of Sikorsky HNS-1 near Gander, Newfoundland, September 1946. (U.S. Coast Guard)

April 6, 1949: Lieutenant Stewart Ross Graham, United States Coast Guard, and his crewman, Aviation Metalsmith 2nd Class (AM2) Robert McAuliffe, completed the longest unescorted helicopter flight on record. They flew a Sikorsky HO3S-1G, serial number 51-234, from the Coast Guard Air Station, Elizabeth City, North Carolina, to Coast Guard Air Station Port Angeles, Washington, via San Diego, California, covering a distance of 3,750 miles (6,035 kilometers) in 57.6 flight hours over 11 days.

Lieutenant Graham was the first Coast Guard pilot to fly a helicopter from a ship.¹ On 16 January 1944, he flew a Sikorsky HNS-1, Bu. No. 46445,² from the deck of a British freighter, SS Daghestan, while in convoy from New York to Liverpool. After 30 minutes, he returned to the freighter. He was a pioneer in the use of the helicopter by the Coast Guard and the Navy.

U.S. Coast Guard Sikorsky HO3S-1G 51-232. (U.S. Coast Guard)
U.S. Coast Guard Sikorsky HO3S-1G 51-232, sister ship of 51-234. (U.S. Coast Guard)

The HO3S (Sikorsky S-51) was a second-generation helicopter, capable of carrying a pilot and up to three passengers. 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 helicopter’s fuselage was 41 feet, 7.5 inches (12.687 meters). The main rotor had a diameter of 48 feet (14.630 meters) and tail rotor diameter was 8 feet, 5 inches (2.2.565 meters) giving the helicopter an overall length of 57 feet, 1 inch (17.399 meters). It was 13 feet, 1.5 inches (4.001 meters) high. The landing gear tread was 12 feet (3.7 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).

The helicopter was powered by an air-cooled, supercharged, 986.749-cubic-inch-displacement (16.170 liter) Pratt & Whitney R-985 AN-5 (Wasp Jr. T1B4) 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).

Sikorsky built 220 helicopter of the S-51 series.

U.S. Coast Guard HO3S-1G, serial number 51-238, sister ship of Lieutenant Graham’s record-setting helicopter. (USCG/Smithsonian Institution)

¹ On 6 and 7 May 1943, Colonel Hollingsworth Franklin (“Frank”) Gregory, U.S. Army Air Corps, made 23 landings and takeoffs from the tanker SS Bunker Hill in Long Island Sound, flying the Army’s Vought-Sikorsky XR-4, 41-18874. Please see TDiA at: https://www.thisdayinaviation.com/6-7-may-1943/

² ex-U.S. Army YR-4B, serial number 42-107239

© 2017, Bryan R. Swopes

6 April 1940

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Jackie Cochran with her Seversky AP-7A, NX1384, prior to her speed record flight, 6 April 1940. )San Diego Air and Space Museum Archive)
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 Asscoication Certificate of Record in the San Diego Air and Space Museum Archive, (Bryan R. Swopes)
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. (Unattributed)
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-7, NX1384, at the Union Air Terminal, Burbank, California, September 1938.
Jackie Cochran’s Seversky AP-7A, NX1384, at the Union Air Terminal, Burbank, California, 1940. (Bill Larkins/Wikipedia)

¹ FAI Record File Number 12025.

© 2019, Bryan R. Swopes