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De Havilland Engine Company
The de Havilland Engine Company was an offshoot of the de Havilland aircraft building company, which started life as the 'Engine Division of the de Havilland Aircraft Company' in 1926 producing the famous de Havilland Gipsy aero-engine. The company was merged with Bristol Siddeley (BSEL) engines in 1961 with BSEL subsequently becoming part of Rolls-Royce Limited in 1968. History The company was officially formed at Stag Lane in February 1944 and later moved into a factory leased by the government in 1946 at Leavesden, which had earlier been a site for Handley Page Halifax production.Lumsden 2003, p.136. This is now the location of Leavesden Film Studios. It went on to produce one of the early turbojet engines the de Havilland Goblin which saw service in the early post-war de Havilland Vampire fighter. The later Ghost turbojet propelled early versions of the de Havilland Comet jetliner and the de Havilland Venom fighter. The company later developed the de Havilland Gnome tur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol Siddeley
Bristol Siddeley Engines Ltd (BSEL) was a British aero engine manufacturer. The company was formed in 1959 by a merger of Bristol Aero-Engines Limited and Armstrong Siddeley Motors Limited. In 1961 the company was expanded by the purchase of the de Havilland Engine Company and the engine division of Blackburn Aircraft. Bristol Siddeley was purchased by Rolls-Royce Limited in 1966. History Bristol Siddeley Engines Limited was formed by the 1 April 1959 merge of Bristol Aero-Engines and Armstrong Siddeley Motors. These were the aero engine manufacturing companies of the Bristol Aeroplane Company and the Hawker Siddeley Group. The share capital of Bristol Siddeley was held in equal proportions by these two parent organisations. At around the same time Bristol's aircraft manufacturing was being subsumed into the British Aircraft Corporation along with those of English Electric and Vickers-Armstrong. Armstrong Siddeley Motors had been producing aero-engines and motor-cars sinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Electric T58
The General Electric T58 is an American turboshaft engine developed for helicopter use. First run in 1955, it remained in production until 1984, by which time some 6,300 units had been built. On July 1, 1959, it became the first turbine engine to gain FAA certification for civil helicopter use. The engine was license-built and further developed by de Havilland in the UK as the Gnome, in the West Germany by Klöckner-Humboldt-Deutz, and also manufactured by Alfa Romeo and the IHI Corporation. Design and development Development commenced with a 1953 US Navy requirement for a helicopter turboshaft to weigh under 400 lb (180 kg) while delivering 800 hp (600 kW). The engine General Electric eventually built weighed only 250 lb (110 kg) and delivered 1,050 hp (780 kW) and was soon ordered into production. First flight was on a modified Sikorsky HSS-1 in 1957, and civil certification for the CT58-100 variant was obtained two years later. A number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Aircraft Museum
The de Havilland Aircraft Museum, formerly the de Havilland Aircraft Heritage Centre, is a volunteer-run aviation museum in London Colney, Hertfordshire, England. The collection is built around the definitive prototype and restoration shops for the de Havilland Mosquito and also includes several examples of the de Havilland Vampire – the third operational jet aircraft in the world. The museum is the largest such museum devoted to one manufacturer in the country. History Salisbury Hall The site has been occupied by a number of large manor houses since the 9th Century. The present house was built around 1668 by the London banker James Hoare, bringing with it associations with Charles II and Nell Gwynne, who lived in a cottage by the bridge to the Hall. The Hall subsequently passed through various hands, and during the latter part of the 19th century was occupied by a succession of farmers. However, about 1905 Lady Randolph Churchill, as Mrs. Cornwallis West, came here to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Spectre
The de Havilland Spectre is a rocket engine that was built by the de Havilland Engine Company in the 1950s. It was one element of the intended mixed power-plant for combination rocket-jet interceptor aircraft of the Royal Air Force, such as the Saunders-Roe SR.177. Design and development The Spectre was a bipropellant engine burning kerosene and hydrogen peroxide. The power could be controlled from 10–100% delivering 8,000 lbf (35.7 kN) of thrust at full power. In the SR.53 it used the same fuel tanks as the turbojet engine and if run at full power was expected to consume the full load in about seven minutes. In 1952 static testing commenced with the Spectre DSpe.l. The aircraft industry had no precedent for an engine which would gain in thrust with altitude and the required maximum thrust was estimated at between and thrust. The design was based on a variable thrust which could be throttled from to . Design philosophy was matched to the mixed power concept of an ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Sprite
The de Havilland Sprite is a British rocket engine that was built by de Havilland in the early-1950s for use in RATO (Rocket-assisted take off) applications. A developed engine with slightly less thrust but a longer burn time was known as the Super Sprite, production ceased in October 1960. Design and development For RATO use only a short burn time is required, with simplicity and light weight as major virtues. The intended market was for assisting take-off of de Havilland Comet 1 airliners (as hot and high operations in the British Empire were considered important) and also for V bombers carrying heavy nuclear weapons. 30 successful test flights were carried out by Comets, from May 1951, but gas turbine performance improved rapidly, and so RATO was not required in service. A hydrogen peroxide monopropellant was used, decomposed into oxygen and steam over a metallic calcium catalyst. The maximum thrust was , varying over the 16 second burn time for a total impulse of 55,00 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolls-Royce Gem
The Rolls-Royce Gem is a turboshaft engine developed specifically for the Westland Lynx helicopter in the 1970s. The design started off at de Havilland (hence the name starting with "G") and was passed to Bristol Siddeley as the BS.360. When Rolls-Royce bought out the latter in 1966, it became the RS.360. Design and development The Gem's three-shaft engine configuration is rather unusual for turboshaft/turboprop engines. Basic arrangement is a four-stage axial LP (Low Pressure) compressor, driven by a single stage LP turbine, supercharging a centrifugal HP (High Pressure) compressor, driven by a single stage HP turbine. Power is delivered to the load via a third shaft, connected to a two-stage free (power) turbine. A reverse flow combustor is featured. The Gem 42 develops at Take-off, Sea Level Static, ISA, but the Maximum Contingency Rating (MCR) is . Until recently all versions of the Lynx have been Gem powered. However, now that Rolls-Royce own Allison, they have been mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Gyron Junior
The de Havilland Gyron Junior was a military turbojet engine design of the 1950s developed by the de Havilland Engine Company and later produced by Bristol Siddeley. The Gyron Junior was a scaled-down derivative of the de Havilland Gyron. Design and development The Gyron Junior was a two-fifths flow scale version of the existing Gyron engine. It started as Project Study number 43 in 1954 and the first prototype ran in August 1955. It powered the Blackburn Buccaneer S.1 twin-engined Naval strike aircraft. The engine was rather unreliable and considered short of thrust."A Passion For Flying"Tom Eeles, Pen & Sword Books Ltd. 2008, , p.42 The later Buccaneer S.2 used the more powerful Rolls-Royce Spey engine. The engine had variable inlet guide vanes, as used on many other engines, necessary for accelerating from idle to high thrust. However, on the Gyron Junior, positioning of the vanes was not reliable and could cause surging which, in turn, could prevent accelerating to high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Gyron
The de Havilland PS.23 or PS.52 Gyron, originally the Halford H-4, was Frank Halford's last turbojet design while working for de Havilland. Intended to outpower any design then under construction, the Gyron was the most powerful engine of its era, producing "dry", and with afterburner ("reheat" in British terminology). The design proved too powerful for contemporary aircraft designs and saw no production use. It was later scaled down to 45% of its original size to produce the de Havilland Gyron Junior, which was somewhat more successful. Design and development The Gyron was Halford's first axial-flow design, a complete departure from his earlier centrifugal-flow engines based on Whittle-like designs, the Goblin (H-1) and Ghost (H-2). The Gyron was also one of the first engines designed specifically for supersonic flight. The Gyron first ran in 1953. Flight testing started in 1955 on a modified Short Sperrin, a bomber design that was instead turned into an experimenta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Gipsy Twelve
The de Havilland Gipsy Twelve was a British aero engine developed by the de Havilland Engine Company in 1937. Approximately 95 were manufactured. It was known as the Gipsy King in Royal Air Force service. Applications * de Havilland Albatross, de Havilland DH.91 Albatross * de Havilland Don, de Havilland DH.93 Don Engines on display Preserved de Havilland Gipsy Twelve engines are on public display at the following museums: *de Havilland Aircraft Museum *Science Museum, London, London Science Museum. Specifications (Gipsy King I) See also References Notes Bibliography * Lumsden, Alec. ''British Piston Engines and their Aircraft''. Marlborough, Wiltshire: Airlife Publishing, 2003. . External links Photo of a de Havilland Gipsy Twelve at Enginehistory.org {{DHaeroengines Aircraft air-cooled V piston engines 1930s aircraft piston engines De Havilland aircraft engines, Gipsy Twelve Inverted V12 aircraft engines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Gipsy Queen
The de Havilland Gipsy Queen is a British six-cylinder aero engine of capacity that was developed in 1936 by the de Havilland Engine Company. It was developed from the de Havilland Gipsy Six for military aircraft use. Produced between 1936 and 1950 Gipsy Queen engines still power vintage de Havilland aircraft types today. Variants ''Note:'' ;Gipsy Queen I :(1936) , military version of Gipsy Six II. Splined crankshaft, but intended for fix-pitch airscrews fitted with an adapter. No fittings for a VP airscrew fitted. Very limited production. ;Gipsy Queen II :(1936) , military version of the Gipsy Six Series II. Strengthened crankcase. Splined crankshaft for V/P airscrew. ;Gipsy Queen III :(1940) , military version of Gipsy Six, strengthened crankcase, tapered crankshaft for fixed-pitch;-1,358 built. Most of these engines were fitted with a very basic top-cover, as per the early Gipsy-Six, with no accessory drives at the rear of the top-cover whatsoever. ;Gipsy Queen IV :(1941) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Gipsy Six
The de Havilland Gipsy Six is a British six-cylinder, air-cooled, inverted inline piston engine developed by the de Havilland Engine Company for aircraft use in the 1930s. It was based on the cylinders of the four-cylinder Gipsy Major and went on to spawn a whole series of similar aero engines that were still in common use until the 1980s. The engines were of particular note for their exceptionally low cross-sectional area, a drag-reducing feature which made them ideal for the many racing aircraft of that period. In 1934, the basic bronze-headed Gipsy Six, rated at 185 horsepower (138 kW) at 2,100 rpm was modified for use in the DH.88 Comet air racer as the Gipsy Six "R" which produced 223 horsepower (166 kW) at 2,400 rpm for takeoff. Many Gipsy Six engines remain in service powering vintage aircraft types today. Design and development The De Havilland Engine Company company had hoped to produce a version of the basic engine capable of utilising a hydraulicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Gipsy Major
The de Havilland Gipsy Major or Gipsy IIIA is a four-cylinder, air-cooled, inverted inline engine used in a variety of light aircraft produced in the 1930s, including the famous Tiger Moth biplane. Many Gipsy Major engines still power vintage aircraft types. Engines were produced by de Havilland in the UK and by the Australian arm of the company, de Havilland Australia, the latter modifying the design to use imperial measures rather than the original metric measurements. Design and development The engine was a slightly modified Gipsy III, which was effectively a de Havilland Gipsy engine modified to run inverted so that the cylinders pointed downwards below the crankcase. The Major was also bored-out (118 mm from 114 mm) compared to the Gipsy III, increasing displacement from 5 L to 6.1 L. The inverted configuration allowed the propeller shaft to be kept in a high position without having the cylinders blocking the pilot's forward view over the nose of the airc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
