Geoffrey de Havilland Jr
Encyclopedia
  • For the father of the same name see: Geoffrey de Havilland
    Geoffrey de Havilland
    Captain Sir Geoffrey de Havilland, OM, CBE, AFC, RDI, FRAeS, was a British aviation pioneer and aircraft engineer...



Geoffrey Roal de Havilland Jr., OBE
Order of the British Empire
The Most Excellent Order of the British Empire is an order of chivalry established on 4 June 1917 by George V of the United Kingdom. The Order comprises five classes in civil and military divisions...

 (1910 - 27 September 1946) was a British test pilot
Test pilot
A test pilot is an aviator who flies new and modified aircraft in specific maneuvers, known as flight test techniques or FTTs, allowing the results to be measured and the design to be evaluated....

 and the son of the English aviation pioneer and aircraft designer of the same name, Geoffrey de Havilland
Geoffrey de Havilland
Captain Sir Geoffrey de Havilland, OM, CBE, AFC, RDI, FRAeS, was a British aviation pioneer and aircraft engineer...

.

De Havilland was born in Kingsclere
Kingsclere
Kingsclere is a large village and civil parish in the county of Hampshire, England. Kingsclere is located near to Watership Down, the setting of Richard Adams' 1972 novel Watership Down.-Geography:...

, Hampshire
Hampshire
Hampshire is a county on the southern coast of England in the United Kingdom. The county town of Hampshire is Winchester, a historic cathedral city that was once the capital of England. Hampshire is notable for housing the original birthplaces of the Royal Navy, British Army, and Royal Air Force...

 in 1910.

Geoffrey de Havilland Jr. became de Havilland
De Havilland
The de Havilland Aircraft Company was a British aviation manufacturer founded in 1920 when Airco, of which Geoffrey de Havilland had been chief designer, was sold to BSA by the owner George Holt Thomas. De Havilland then set up a company under his name in September of that year at Stag Lane...

's Chief Test Pilot and made the maiden flights of both the de Havilland Mosquito
De Havilland Mosquito
The de Havilland DH.98 Mosquito was a British multi-role combat aircraft that served during the Second World War and the postwar era. It was known affectionately as the "Mossie" to its crews and was also nicknamed "The Wooden Wonder"...

 and the de Havilland Vampire
De Havilland Vampire
The de Havilland DH.100 Vampire was a British jet-engine fighter commissioned by the Royal Air Force during the Second World War. Following the Gloster Meteor, it was the second jet fighter to enter service with the RAF. Although it arrived too late to see combat during the war, the Vampire served...

.

De Havilland was awarded the OBE
Order of the British Empire
The Most Excellent Order of the British Empire is an order of chivalry established on 4 June 1917 by George V of the United Kingdom. The Order comprises five classes in civil and military divisions...

 in the King's birthday honours in 1945.

He died on the evening of 27 September 1946 whilst carrying-out high speed tests in the de Havilland DH.108
De Havilland Swallow
The de Havilland DH 108 "Swallow" was a British experimental aircraft designed by John Carver Meadows Frost in October 1945. The DH 108 featured a tailless, swept wing with a single vertical stabilizer, similar to the layout of the wartime German Messerschmitt Me 163 Komet rocket-powered...

 TG306
United Kingdom military aircraft serials
In the United Kingdom to identify individual aircraft, all military aircraft are allocated and display a unique serial number. A unified serial number system, maintained by the Air Ministry , and its successor the Ministry of Defence , is used for aircraft operated by the Royal Air Force , Fleet...

which broke-up over the Thames estuary
Thames Estuary
The Thames Mouth is the estuary in which the River Thames meets the waters of the North Sea.It is not easy to define the limits of the estuary, although physically the head of Sea Reach, near Canvey Island on the Essex shore is probably the western boundary...

, the remains of the aircraft being discovered the following day in the mud of Egypt Bay
Hoo Peninsula
The Hoo Peninsula is a peninsula in England separating the estuaries of the rivers Thames and Medway. It is dominated by a line of sand and clay hills, surrounded by an extensive area of marshland composed of alluvial silt. The name Hoo is the Old English word for spur of land.-History:The Romans...

, Gravesend
Gravesend, Kent
Gravesend is a town in northwest Kent, England, on the south bank of the Thames, opposite Tilbury in Essex. It is the administrative town of the Borough of Gravesham and, because of its geographical position, has always had an important role to play in the history and communications of this part of...

, Kent
Kent
Kent is a county in southeast England, and is one of the home counties. It borders East Sussex, Surrey and Greater London and has a defined boundary with Essex in the middle of the Thames Estuary. The ceremonial county boundaries of Kent include the shire county of Kent and the unitary borough of...

. Found on the mud flats at Whitstable
Whitstable
Whitstable is a seaside town in Northeast Kent, Southeast England. It is approximately north of the city of Canterbury and approximately west of the seaside town of Herne Bay. It is part of the City of Canterbury district and has a population of about 30,000.Whitstable is famous for its oysters,...

, his parachute pull ring untouched, the body of Captain de Havilland was found to have suffered a broken neck
Cervical fracture
A cervical fracture is commonly called a broken neck. There are seven cervical vertebrae in the human neck, and the fracture of any can be catastrophic. The most common causes are traffic accidents or diving into shallow water...

, the result of the aircraft having undergone severe and violent longitudinal oscillation
Oscillation
Oscillation is the repetitive variation, typically in time, of some measure about a central value or between two or more different states. Familiar examples include a swinging pendulum and AC power. The term vibration is sometimes used more narrowly to mean a mechanical oscillation but sometimes...

s prior to break-up, which resulted in de Havilland's head striking the cockpit canopy with great force. A pilot who flew another DH.108, Capt. Eric "Winkle" Brown suggests that a factor in de Havilland's death was due to his height, Brown suffering similar oscillations during a test flight, which due to his shorter stature, did not result in his head contacting the cockpit hood. The David Lean
David Lean
Sir David Lean CBE was an English film director, producer, screenwriter, and editor best remembered for big-screen epics such as The Bridge on the River Kwai , Lawrence of Arabia ,...

 film The Sound Barrier is based upon this event.

Two of de Havilland's cousins were the actresses Olivia de Havilland
Olivia de Havilland
Olivia Mary de Havilland is a British American film and stage actress. She won the Academy Award for Best Actress in 1946 and 1949. She is the elder sister of actress Joan Fontaine. The sisters are among the last surviving leading ladies from Hollywood of the 1930s.-Early life:Olivia de Havilland...

 and Joan Fontaine
Joan Fontaine
Joan de Beauvoir de Havilland , known professionally as Joan Fontaine, is a British American actress. She and her elder sister Olivia de Havilland are two of the last surviving leading ladies from Hollywood of the 1930s....

.
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