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Armstrong-Siddeley Cheetah
The Armstrong Siddeley Cheetah is a seven-cylinder British air-cooled aircraft radial engine of 834 cu in (13.65 L) capacity introduced in 1935 and produced until 1948. Early variants of the Cheetah were initially known as the Lynx Major.Lumsden 2003, p.74. The Cheetah was used to power many British trainer aircraft during World War II including the Avro Anson and Airspeed Oxford. Design and development The Cheetah was developed from the earlier Lynx using the increased bore cylinders from the Armstrong Siddeley Panther but the engine retained the stroke of the Lynx. Initially only direct-drive variants were produced with later engines being made available with propeller reduction gear of various ratios. Superchargers were also available for later variants, both geared and directly driven by the crankshaft. The basic design of the Cheetah remained unchanged from its introduction in 1935 to the last examples built in 1948. It was the first engine of its type to be certi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by '' Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time Between Overhaul
Time between overhauls (abbreviated as TBO or TBOH) is the manufacturer's recommended number of running hours or calendar time before an aircraft engine or other component requires overhaul. On rotorcraft, many components have recommended or mandatory TBOs, including main rotor blades, tail rotor blades and gearboxes. For engines, the time between overhauls is generally a function of the complexity of the engine and how it is used. Piston-based engines are much more complex than turbine-powered engines, and generally have TBOs on the order of 1,200 to 2,000 hours of running time. They tend toward the lower number if they are new designs, or include boosting options such as a turbocharger. In comparison, jet engines and turboprop A turboprop is a turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a propelling nozzle. Air enters the intake and is compressed by the compressor. Fuel ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Hawk Moth
The de Havilland DH.75 Hawk Moth was a 1920s British four-seat cabin monoplane built by de Havilland at Stag Lane Aerodrome, Edgware. Design and development The DH.75 Hawk Moth was the first of a family of high-wing monoplane Moths, and was designed as a light transport or air-taxi for export. The aircraft had a fabric-covered steel-tube fuselage and wooden wings. The Hawk Moth was first flown on 7 December 1928 from Stag Lane.Jackson 1987, p.284. The first aircraft used a 200 hp (149 kW) de Havilland Ghost engine. This engine comprised two de Havilland Gipsys mounted on a common crankcase to form an air-cooled V-8. With the Ghost, the aircraft was underpowered and a Armstrong Siddeley Cheetah 7-cylinder radial engine was fitted to it and all but one production aircraft. Changes were also made to the structure including increased span and chord wings and the aircraft was redesignated the DH.75A. In December 1929 the first aircraft was demonstrated in Canada wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CASA C-201 Alcotán
The CASA C-201 Alcotán ("Kestrel") was a 1950s transport aircraft, built by CASA for the Spanish Air Force. Design and development The C-201 was the result of an agreement between the Spanish government and manufacturer Construcciones Aeronáuticas SA (CASA), to develop a transport aircraft for the air force capable of carrying a payload of one tonne over a range of . The design was a twin-engine low-wing cantilever monoplane of conventional configuration. The main units of the tailwheel undercarriage retracted into the engine nacelles. Operational history Two prototypes were constructed, and the first of those first flew on 11 February 1949. An order for twelve pre-production aircraft and one hundred series aircraft was then placed. The pre-production machines were planned to demonstrate a range of different equipment fits for the airframe, enabling it for a variety of roles including personnel transport, training for bombing and photo-reconnaissance work, and instrument flyin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol Bulldog
The Bristol Bulldog is a British Royal Air Force single-seat biplane fighter designed during the 1920s by the Bristol Aeroplane Company. More than 400 Bulldogs were produced for the RAF and overseas customers, and it was one of the most famous aircraft used by the RAF during the inter-war period. Background The design of the Bulldog was the outcome of a series of design studies for fighters undertaken by Frank Barnwell during the 1920s. In 1924 Barnwell had started work on a fighter powered by the Rolls-Royce Falcon to meet the requirements of specification F.17/24. The project was shelved since Bristol preferred to use its own engine designs, but was revived in 1926 when Barnwell started work on a design, designated the Bristol 102, to meet either F.9/26 for a day-and-night fighter or N.21/26 for a shipborne fighter. The Type 105 designation was first applied to a subsequent proposal for another aircraft to meet F.9/26 powered by the Mercury engine then under develo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blackburn Lincock
The Blackburn F.2 Lincock was a British single-seat lightweight fighter produced by Blackburn Aircraft Limited. Design and development In 1928 Blackburn designed and built a private venture lightweight biplane fighter powered by an Armstrong Siddeley Lynx IVC engine. The Blackburn F.2 Lincock was of wooden construction and first appeared in May 1928. It performed well in demonstrations but failed to gain any orders. The Canadian government showed an interest in the design, and a metal construction variant (the Lincock II) was built. It was tested in Canada at Camp Borden in 1930 where there was interest in using the Lincock as an advanced trainer, but the type was not ordered. It was later used to perform public aerobatic displays in 1933 and 1934. The final version was the Lincock III of which five were produced, two were delivered to China, two to Japan and one retained as a demonstrator. Interest from Italy resulted in Piaggio acquiring a licence to produce a two-seat versi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avro 652
The Avro 652 was a 1930s British light airliner, built by A.V. Roe and Company. It was a twin-engine, low-wing monoplane with a retractable undercarriage, and a tailwheel. Although only two were produced, it formed the basis for the successful Avro Anson. Design and development In 1933, Imperial Airways issued a specification to Avro, for a light airliner to transport four passengers for up to 420 mi (676 km) at a cruising speed of 130 mph (210 km/h). By August 1933, Roy Chadwick's team had produced a design study. This had to be revised when Imperial Airways changed the specification, to enable the machine to fly the Karachi-Bombay-Colombo night mail service. The amended design was accepted, and in April 1934 an order for two aircraft was issued. The first aircraft flew on 7 January 1935, and the type was certificated in March 1935. Operational history On 11 March 1935, the two Avro 652s were delivered to Imperial Airways at Croydon Airport. They served wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avro 626
The Avro 626 is a single-engined British biplane trainer aircraft produced by Avro during the (1918-1939) inter-war period. Design and development The Model 626 was developed by Avro from the company's Model 621 (Tutor) for export to smaller air forces, the idea being that the 626 would be a single aircraft that could carry out general aircrew training as well as a number of other roles. The types 621 and 626 were both two-seaters, but the latter had an additional cockpit behind the rear seat of the 621 and accessible from it. This additional cockpit was fitted with a Scarff ring for a machine gun and carried equipment for air navigation, wireless and gunnery training. Structurally and aerodynamically, it was almost identical to the Tutor: it had a conventional fabric-covered, metal airframe with single-bay wings. Most of the 626s, like the Tutors had an Armstrong Siddeley Lynx IVC engine of 240 hp (180 kW), but most of those supplied to the Egyptian and Brazilian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airspeed Viceroy
The Airspeed AS.8 Viceroy was a British racing version of the Airspeed AS.6 Envoy built by Airspeed (1934) Limited at Portsmouth. The Viceroy was built to order for Captain T. Neville Stack and Sydney Lewis Turner, to compete in the England-Australia MacRobertson Air Race. Only one aircraft, registered G-ACMU, was built. Design and development The Viceroy was a modified Airspeed Envoy. Modifications included: *More powerful, supercharged Armstrong Siddeley Cheetah VI engines in long chord, smooth NACA cowlings *Strengthened main landing gear to allow higher weight takeoff *An auxiliary petrol tank, capacity was 270 Imp gallon/1,227 litres installed in the aft fuselage *Narrowed fuselage without passenger windows Operational history The Airspeed Viceroy started the race from RAF Mildenhall, England, but after several reliability problems including with the mainwheel brakes, it was withdrawn from the race at Athens. The pilots concluded that it would be unsafe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airspeed Queen Wasp
The Airspeed AS.30 Queen Wasp was a British pilotless target aircraft built by Airspeed Limited at Portsmouth during the Second World War. Although intended for both Royal Air Force and Royal Navy use, the aircraft never went into series production. Design and development The Queen Wasp was built to meet an Air Ministry Specification Q.32/35 for a pilotless target aircraft to replace the de Havilland Tiger Moth based de Havilland Queen Bee. Two prototypes were ordered in May 1936, one to have a wheeled landing gear for use by the Royal Air Force and the other as a floatplane for Royal Navy use for air-firing practice at sea. Powered by the Armstrong Siddeley Cheetah engine, a total of 65 aircraft were ordered, contingent on the success of the flight test programme. The aircraft was a single- engined biplane constructed of wood with sharply-tapered wings and fabric-covered control surfaces. An enclosed cabin with one seat was provided so the Queen Wasp could be flown manuall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airspeed Envoy
The Airspeed AS.6 Envoy was a twin-engined light transport aircraft designed and produced by the British aircraft manufacturer Airspeed Ltd. The Envoy originated as a heavier twin-engine derivative of Airspeed's Courier light transport aircraft. Sharing much of its design with this earlier aircraft, it was relatively easy to develop; confidence in the project was so high that within a week of the prototype's maiden flight, it was performing as a display aircraft to the public. Quantity production of the Envoy had been initiated even before this first flight. Early on, Airspeed worked closely with the British engine manufacturer Wolseley Motors as both a key supplier and early custom of the Envoy; development subsequently branched out to a wide variety of engines and configurations. The majority of Envoys were produced by Airspeed at their facility at Portsmouth Aerodrome, Hampshire. The type was also produced overseas in Japan by Mitsubishi following the acquisition of a lic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airspeed Courier
The Airspeed AS.5 Courier was a British six-seat single-engined light aircraft that was designed and produced by the British aircraft manufacturer Airspeed Ltd, Airspeed Limited at Portsmouth Airport, Hampshire, Portsmouth. It has the distinction of being the first British aircraft fitted with a retractable landing gear, undercarriage to go into quantity production. Initial development work on the Courier started in 1931, being envisioned as an advanced aircraft intended primarily for private owner-pilots. Its ambitious design, including its unorthodox undercarriage, attracted the attention of the British aviation pioneer, Sir Alan Cobham, who saw it as a suitable aircraft for demonstrating his Aerial refueling, airborne refuelling techniques for long distances flights. Following the order's confirmation in August 1932, a single prototype was constructed, performing its maiden flight on 10 April 1933. The Courier quickly proved itself to be a sound design as well as capable of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
