20 September 1943: Geoffrey Raoul de Havilland, Jr., chief test pilot of the de Havilland Aircraft Co., Ltd., made the first flight in the prototype DH.100, LZ548/G, at Hatfield, Hertfordshire. (The “/G” in the identification indicated that the aircraft was to be guarded at all times.) Assigned the code name Spider Crab, the production DH.100 would be better known as the de Havilland Vampire.
The flight lasted approximately 30 minutes and the airplane exceeded 400 miles per hour (644 kilometers per hour). De Havilland reported that the prototype was trimmed with the left wing down, had overly sensitive ailerons and demonstrated instability in yaw with rudder applications.
This oscillation in the yaw axis—called “snaking”—was determined to be a result of the overly effective vertical fins. After wind tunnel and flight testing, it was decided to reduce the fins’ area, resulting in the flat top configuration seen in bottom photograph.
The DH.100 was a single-seat, single-engine fighter powered by a turbojet engine. The twin tail boom configuration of the airplane was intended to allow a short exhaust tract for the engine, reducing power loss in the early jet engines available at the time.
LZ548/G was originally powered by a Halford H.1 turbojet which produced 2,300 pounds of thrust (10.231 kilonewtons) at 9,300 r.p.m. This engine was produced by de Havilland and named Goblin.
The Goblin is a linear descendant of the early Whittle units. It comprises a single-sided centrifugal compressor delivering air to sixteen combustion chambers grouped symmetrically around the axis of the unit and leading to the nozzle of the single-stage axial turbine which drives the compressor. Compressor impeller and turbine rotor are coupled by a tubular shaft to form a single rotating assembly which is mounted on only two ball bearings. The maximum diameters of the engine, around the compressor casing, is 50in., [1.27 meters] and with a jet pipe of minimum length fitted the overall length is about 8ft. [2.438 meters] Equipped with a jet pipe and all the necessary engine auxiliaries the dry weight of the complete unit is 1,500 lb. [680 kilograms] Fuel consumption is at the rate of 1.23 lb. / hr. per lb. thrust.
—FLIGHT and AIRCRAFT ENGINEER, No. 1923. Vol. XLVIII. Thursday, 1 November 1945 at Page 472, Column 2
The Vampire entered service with the Royal Air Force in 1945 and remained a front-line fighter until 1953. 3,268 DH.100s were built.
The first of the three prototype Vampires, LZ548, crashed after takeoff from Hatfield, 23 July 1945, due to a fuel pump failure. Geoffrey Pike, the pilot, was not injured.
Jacqueline Marie-Thérèse Suzanne Douet was born 5 November 1917 at Challans, Vendée, France. She was the daughter of Edmund Pierre Victor Douet, a ship builder, and Suzanne Jeanne Chevy. She attended school in Nantes, then studied art at L’École du Louvre, Paris.
26 February 1938, Paul Auriol, the son of Vincent Jules Auriol, who was later the first president of France’s Fourth Republic, married Mlle Douet. They would have two sons. The couple divorced, 12 November 1965, but re-married, 24 Jan 1987.
During World War II, Paul and Jacqueline worked with La Résistance française, fighting against the German invaders and the Vichy government of France.
After taking a flight with Commander Raymond Guillaume, Mme Auriol was determined to learn to fly. She earned a private license in 1948.
July 1949, severely injured in crash of a Société de construction aeronavale (SCAN) 30 seaplane (a license-built Grumman G-44A Widgeon), on the Seine at Les Mureauxrequired 14 operation s at the Foch Hospital to repair the damage to her face, followed by 8 more operations at the Manhattan Eye, Ear and Throat Hospital in the United States.
In 1950, Jacqueline Auriol qualified as a military pilot. She was then accepted as a test pilot for Société des Avions Marcel Dassault.
While in the United States for continued medical treatment, Mme Auriol trained as a helicopter pilot at the Bell Aircraft Company plant at Buffalo, New York. After only 23 flight hours in a Bell Model 47, she was awarded her helicopter pilot certificate, 23 January 1951. Larry Bell, president of the company, said that she was “the most extraordinary woman in the world. She has met fear head-on and conquered it. She has a complete passion for flying.” She became the eighth member of Whirly-Girls, the international association of women helicopter pilots.
On 12 June 1951, Mme Auriol flew a Goblin-powered de Havilland DH.100 Vampire to set a Fédération Aéronautique Internationale (FAI) world record for speed over a given distance of 100 kilometers (62.14 statute miles), averaging 818.18 km/h (505.39 m.p.h.). ¹ She broke the existing record, 703.38 km/h (437.06 m.p.h.) set 29 December 1949 by Jacqueline Cochran of the United States with a North American Aviation P-51C Mustang. ² For her record flight, Mme Auriol was named Chevalier de la légion d’honneur. Harry S. Truman, President of the United States, presented her with the Harmon International Aviatrix Trophy.
On 21 December 1952, at Istres, France, Mme Auriol flew a license-built variant of the de Havilland DH.100 Vampire FB.53 fighter bomber—the Société nationale des constructions aéronautiques du Sud-Est (SNCASE) SE 535 Mistral—to set an FAI World Record for Speed Over 100 Kilometers Without Payload, at 855,92 km/h (531.84 m.p.h.). ³ The aircraft was equipped with a Hispano-built Rolls-Royce Nene 104 turbojet engine. Mme Auriol won a second Harmon Trophy.
On 31 May, 1955, Mme Auriol set a World Record for Speed Over a 15km/25km (9.3–15.5 statute miles) Straight Course, flying the prototype Dassault Mystère IV N interceptor. Her speed averaged 1 151 km/h (715 m.p.h.). ⁴ Again she broke a speed record set by Jackie Cochran with a prototype Canadair Sabre Mk.3. ⁵ For this flight, she was promoted to Officier de la Légion d’honneur, 31 October 1956. She was awarded a third Harmon Trophy. Her record-setting Mystère IV N is on display at the Conservatoire l’Air et l’Espace d’Acquitane, Bordeaux Merignac Airport, France.
Flying a delta-wing Dassault Mirage III C, at Istres, 22 June 1962, Jacqueline Auriol averaged 1 850,2 km/h (1,149.7 m.p.h.) to set an FAI World Record for Speed Over 100 Kilometers Without Payload. ⁵
The following year, 14 June 1963, Mme Auriol flew the reconnaissance version, the Dassault Mirage III R, over a 100 kilometer course at an average speed of 2 038,70 km/h (1,266.79 m.p.h.). This set her fifth FAI speed record. ⁷ She was the first woman to exceed Mach 2.
In 1965, Mme Auriol set two world speed records while flying the Dassault Aviation Mystère-Falcon 20 business jet. On 15 May, she averaged 819,13 km/h (508.98 m.p.h.) over a 2000-kilometer (1,242.7 statute miles) closed circuit, ⁸ and on 10 June, over a 1000-kilometer circuit (621.4 miles), 859,51 km/h (534.08 m.p.h.). ⁹
On 28 December 1979, Jacqueline Auriol was promoted to Commandeur de la Légion d’honneur, and 13 July 1992, to Grand officier de la Légion d’honneur.
She was awarded the Grand-croix Ordre National du Merite, 14 May 1957.
Mme Jacqueline Marie-Thérèse Suzanne Douet Auriol died at Hotel-de-Ville, Paris, 11 February 2000. Her remains were interred at the cemetery in Ville de Muret, France
“Now I know that only life and death are important. When I am in the air, close to both, things finally take on their proper perspective. Nonsense becomes nonsense. The big things stand out, become alive.”