Beatrice Shilling
| Beatrice Shilling | |
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Beatrice Shilling and her Norton motorcycle
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| Born | 8 March 1909 Waterlooville, Hampshire |
| Died | Script error: The function "death_date_and_age" does not exist. |
| Nationality | British |
| Education | Manchester University |
| Spouse(s) | George Naylor |
| Engineering career | |
| Engineering discipline | Aeronautical Engineering |
| Institution memberships | Institution of Mechanical Engineers Women's Engineering Society |
| Employer(s) | Royal Aircraft Establishment |
| Significant projects | Rolls-Royce Merlin |
| Significant advance | Aircraft engine |
| Significant awards | OBE |
Beatrice (Tilly) Shilling OBE PhD MSc CEng (8 March 1909 – 18 November 1990)[1] was a British aeronautical engineer and motor racer. During World War II, she invented "Miss Shilling's orifice", a fix for the Rolls-Royce Merlin engines of the Hawker Hurricane and Supermarine Spitfire fighters, which prevented engine flooding in a dive.
Shilling raced motorcycles in the 1930s, and after the war raced automobiles.
Contents
Early life
Shilling was born at Waterlooville, Hampshire, the daughter of a butcher. At age 14, she bought herself a motorcycle, which she tinkered with; she was already determined to become an engineer.[2] After completing secondary school, she worked for an electrical engineering company for three years, installing wiring and generators.[3] Her employer, Margaret Partridge, encouraged her to study electrical engineering at the University of Manchester; she received a bachelor's degree in 1932 and stayed on for a year to get a Master of Science degree in mechanical engineering.[3] Jobs were hard to find in the Depression; she worked as a research assistant for Professor G. F. Mucklow at the University of Birmingham.[3] In 1936 she was hired as a scientific officer by the Royal Aircraft Establishment (RAE), the research and development agency of the Royal Air Force (RAF) in Farnborough, Hampshire. She worked at Royal Aircraft Establishment until her retirement in 1969.
World War II
Shilling worked on many projects for RAE during the war.
The orifice
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During the Battle of France and Battle of Britain in 1940, RAF pilots discovered a serious problem in fighter planes with Merlin engines, such as the Hurricane and Spitfire. When the plane went nose-down to begin a dive, the resulting negative g-force would flood the engine's carburettor, causing the engine to stall.
German fighters used fuel injection engines and did not have this problem. So in combat, a German fighter could evade a pursuing RAF fighter by flying a negative g maneuver which the RAF plane couldn't follow.
Shilling devised the R.A.E. restrictor to solve this problem. It was a small metal disc with a hole in the middle, fitted into the engine's carburettor. The disk limited maximum fuel flow and prevented flooding. By March 1941, she had led a small team on a tour of RAF fighter bases, installing the devices in their Merlin engines. The restrictor was immensely popular with pilots, who affectionately named it 'Miss Shilling's orifice' or simply the 'Tilly orifice.' It continued in use as a stop-gap until the introduction of the pressure carburettor in 1943.[4]
Later life
After the war, Shilling worked on a variety of projects including the Blue Streak missile[3] and the effect of a wet runway upon braking.[1] Shilling was once described by a fellow scientist as "a flaming pathfinder of women's lib"; she always rejected any suggestion that as a woman she might be inferior to a man in technical and scientific fields. However, her brusque manner and contempt for bureaucracy led to an uneasy relationship with management. Shilling worked for the RAE until 1969, rising to a senior post in the Mechanical Engineering Department.[3]
She held a doctorate from the University of Surrey, and was a CEng and member of the Institution of Mechanical Engineers and the Women's Engineering Society.
Motor sports
In the 1930s, Shilling raced motorcycles. She beat professional riders, such as Noel Pope, and was awarded the Gold Star for lapping the Brooklands circuit at 106 miles per hour (171 km/h) on her Norton M30.[5]
Post-war, she raced cars. In the 1960s, she and her husband owned, tuned, and raced an Austin-Healey Sebring Sprite, an Elva Courier, and an Elva Formula Junior single-seat racing car.[6]
Personal life
Shilling married George Naylor, in September 1938.[7] He also worked at the RAE. According to anecdote, she refused to marry him until he also had been awarded the Brooklands Gold Star for lapping the circuit at over 100 mph.[3] During World War II he was a bomber pilot with No. 625 Squadron RAF and reached the rank of Wing Commander.
Legacy
In 2011, the J D Wetherspoon chain of public houses opened a pub in Farnborough named the Tilly Shilling in her honour.[8][9] In 2015, a collection of her racing badges and trophies was bought by the Brooklands Museum.[10]
See also
References
Notes
- ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Hampshire Biographies: Beatrice Shilling 1909 – 1990: Aeronautical engineer and motorcycle racer
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lumsden 2003, p.32.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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Bibliography
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
- Lua error in package.lua at line 80: module 'strict' not found.
External links
- Use dmy dates from January 2015
- Use British English from January 2015
- Articles with hCards
- 1909 births
- 1990 deaths
- English inventors
- Women inventors
- People from Waterlooville
- Alumni of the University of Manchester
- English aerospace engineers
- English motorcycle racers
- Officers of the Order of the British Empire
- Women in engineering
- Women in technology
- British women in World War II
