Power Jets

For joint venture company by Snecma and NPO Saturn, see PowerJet.
Power Jets
Limited company
Industry Aircraft jet engines
Fate Merged with RAE forming NGTE Pyestock
Founded 27 January 1936
Founder Sir Frank Whittle
Defunct 1945
Headquarters Rugby, Warwickshire (initially in 1936)
Lutterworth (from January 1938)
Area served
 UK
Key people
 James Collingwood Tinling, Sir William Hawthorne
Products Gas turbines
Services Gas turbine research
Divisions Whetstone
Preserved Power Jets W.1 at the Science Museum (London)

Power Jets Ltd was a British company set up by Frank Whittle for the purpose of designing and manufacturing jet engines. The company was nationalised in 1944, and evolved into the National Gas Turbine Establishment.

History

Founded on January 27, 1936, the company consisted of Whittle, Rolf Dudley-Williams, James Collingwood Tinling, and Lancelot Law Whyte of investment bankers O T Falk & Partners.

Initial premises were hired from British Thomson-Houston (BTH) at Rugby, Warwickshire. In addition to the founder members, the company initially 'borrowed' some fitters from BTH to assist in the project and later Power Jets was able to get 'one or two' people on loan from the Royal Air Force. By the beginning of 1940 the company had a total workforce of about twenty five. In 1938 Power Jets had moved from Rugby to BTH's works in Lutterworth.

A major breakthrough for the company came in 1940 when at the prompting of Stanley Hooker, Ernest Hives, chairman of Rolls-Royce, visited Lutterworth, and offered to make any parts Whittle required at Rolls-Royce's Derby experimental shop.[1]

The Power Jets WU design was the first turbojet to run, being first tested on April 12, 1937,[2] and the Power Jets W.1 powered the Gloster E.28/39, the first jet aircraft to fly in the United Kingdom. The W.1 was also the first jet engine built in the United States where, as the General Electric I-A, it was the first US-built jet engine to run, and as the production General Electric J31 it powered the Bell P-59A Airacomet.

In 1941 experiments with boosting the W.1's thrust by introducing a liquid coolant were initiated, the first fluid tried being liquid ammonia which proved too effective, resulting in the engine over-speeding and pushing the thrust and rpm indicators off the scales, before later trials changed to using water, and water-methanol. A system to trial the technique in the E.28/39 was devised but never fitted.[3]

The Power Jets W.2 was intended to be produced by Rover, but because of delays was later transferred to Rolls-Royce where it entered production as the Welland, powering early versions of the Gloster Meteor. The W.2B/500 design, modified by Rover as the B.26, after transfer to Rolls-Royce and further re-design, entered service as the Derwent, which replaced the Welland in the Meteor.

After initial suggestions in 1939 by the Engine Department of the Royal Aircraft Establishment (RAE), the latter's Pyestock Section experimented with the technique of injecting fuel into the engine's exhaust nozzle, later known as reheat, and this technique was further refined after Power Jets and the personnel from Pyestock had been amalgamated. Reheat was later fight trialled in the W.2/700 engines in a Meteor I. The technique increased the Meteor's speed by 30-40mph.[4] The same engine was also trialled with an aft ducted fan.[5]

A version of the Power Jets W.2/700 was intended for the supersonic Miles M.52 research aircraft, but the aircraft was never completed.

On 28 March 1944, after discussions with the Air Ministry, Whittle reluctantly agreed to the nationalisation of Power Jets Ltd. for £135,000, and the company became Power Jets (Research and Development) Ltd.

After the Second World War the company was merged with the Turbine Division of the Royal Aircraft Establishment (RAE) at Farnborough, to form the National Gas Turbine Establishment (NGTE Pyestock).

In 1951 Power Jets received $4,000,000 (£1,428,600) from the US Government in payment for US use of some 200 Power Jets Whittle gas turbine patents for the next 20 years. Previously, patent fees payable by the US had been waived by Power Jets for the duration of the war.[6]

Products

The Power Jets W.2/700 engine flew in the Gloster E.28/39, the first British aircraft to fly with a turbojet engine, and the Gloster Meteor - the light-brown object in the middle of the jetpipe is a cork intended to prevent museum visitors from hurting themselves on the sharp, pointed end, of the turbine fairing

See also

References

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