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De Havilland DH9
The Airco DH.9 (from de Havilland 9) – also known after 1920 as the de Havilland DH.9 – was a British single-engined biplane bomber developed and deployed during the First World War. The DH.9 was a development of Airco's earlier successful DH.4, with which it shared many components. These were mated to an all-new fuselage and the BHP/Galloway ''Adriatic'' engine, which promised increased performance. Anticipating its usefulness, the type was ordered in very large numbers for Britain's Royal Flying Corps (RFC). Upon entering service, the DH.9's performance was found to be unsatisfactory. The Adriatic engine was unreliable and failed to provide the expected power, which gave the DH.9 poorer performance than the aircraft it had been meant to replace. The performance deficit was blamed for the heavy losses they suffered over the Western Front. The redesigned DH.9A was fitted with a more powerful and reliable American Liberty L-12 engine which rectified the shortcomings of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bomber
A bomber is a military combat aircraft designed to attack ground and naval targets by dropping air-to-ground weaponry (such as bombs), launching aerial torpedo, torpedoes, or deploying air-launched cruise missiles. The first use of bombs dropped from an aircraft occurred in the Italo-Turkish War, with the first major deployments coming in the World War I, First World War and World War II, Second World War by all major airforces causing devastating damage to cities, towns, and rural areas. The first purpose built bombers were the Italy, Italian Caproni Ca 30 and United Kingdom, British Bristol T.B.8, both of 1913. Some bombers were decorated with nose art or victory markings. There are two major classifications of bomber: strategic and tactical. Strategic bombing is done by heavy bombers primarily designed for long-range bombing missions against strategic targets to diminish the enemy's ability to wage war by limiting access to resources through crippling infrastructure or reduci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bomber
A bomber is a military combat aircraft designed to attack ground and naval targets by dropping air-to-ground weaponry (such as bombs), launching aerial torpedo, torpedoes, or deploying air-launched cruise missiles. The first use of bombs dropped from an aircraft occurred in the Italo-Turkish War, with the first major deployments coming in the World War I, First World War and World War II, Second World War by all major airforces causing devastating damage to cities, towns, and rural areas. The first purpose built bombers were the Italy, Italian Caproni Ca 30 and United Kingdom, British Bristol T.B.8, both of 1913. Some bombers were decorated with nose art or victory markings. There are two major classifications of bomber: strategic and tactical. Strategic bombing is done by heavy bombers primarily designed for long-range bombing missions against strategic targets to diminish the enemy's ability to wage war by limiting access to resources through crippling infrastructure or reduci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siddeley Puma
The Siddeley Puma was a British aero engine developed towards the end of World War I and produced by Siddeley-Deasy. The first engines left the production lines of Siddeley-Deasy in Coventry in August 1917, production continued until December 1918. At least 4,288 of the 11,500 ordered engines were delivered, orders were cancelled following the Armistice with Germany (Compiègne), Armistice. Production was continued under the name Armstrong Siddeley Puma when the manufacturer was bought by Armstrong Whitworth and became Armstrong Siddeley. The engine was based on a previous Beardmore Halford Pullinger, B.H.P engine which was also developed as the Galloway "Adriatic." Applications *The Puma engine was used in the British World War I bomber aircraft, the Airco D.H.9. In use it proved to be highly troublesome, making the aircraft significantly inferior to the type it replaced. The engine was also installed untidily, with the cylinder heads protruding. The D.H.9, as a type, was impr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Weir, 1st Viscount Weir
William Douglas Weir, 1st Viscount Weir GCB PC (12 May 1877 – 2 July 1959) was a Scottish industrialist and politician, who served as President of the Air Council in 1918. Early life Weir was born in Glasgow in 1877, the eldest child of James Weir (1842/3–1920) and his wife, Mary Richmond (1848–1931). He attended Allan Glen's School and the High School of Glasgow before entering an apprenticeship in the business established by his father and his uncle, G. and J. Weir, manufacturers of condensers, pumps, and evaporators. Industrialist Weir rose to become a director of G. and J. Weir, before serving as managing director between 1902 and 1915, and as chairman from 1910 to 1953. During World War I, he converted his factories to produce explosive shells. He went on to hold a number of other directorships, including Lloyds Bank (1928–38), Imperial Chemical Industries (1928–53), International Nickel (1928–59), and Shell Transport and Trading (1939). He was also chairm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secretary Of State For Air
The Secretary of State for Air was a Secretary of State (United Kingdom), secretary of state position in the British government, which existed from 1919 to 1964. The person holding this position was in charge of the Air Ministry. The Secretary of State for Air was supported by the Under-Secretary of State for Air. History The position was created on 10 January 1919 to manage the Royal Air Force. In 1946, the three posts of Secretary of State for War, First Lord of the Admiralty, and Secretary of State for Air became formally subordinated to that of Minister of Defence (UK), Minister of Defence, which had itself been created in 1940 for the co-ordination of defence and security issues. On 1 April 1964, the Air Ministry was incorporated into the newly-created united Ministry of Defence (United Kingdom), Ministry of Defence, and the position of Secretary of State for Air was abolished. List of leaders Notes {{notelist External linksHansard – Secretary of State for Air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hugh Trenchard, 1st Viscount Trenchard
Marshal of the Royal Air Force Hugh Montague Trenchard, 1st Viscount Trenchard, (3 February 1873 – 10 February 1956) was a British officer who was instrumental in establishing the Royal Air Force. He has been described as the "Father of the Royal Air Force." During his formative years, Trenchard struggled academically, failing many examinations and only just succeeding in meeting the minimum standard for commissioned service in the British Army. As a young infantry officer, Trenchard served in India and with the outbreak of the Boer War, he volunteered for service in South Africa. While fighting the Boers, Trenchard was critically wounded and as a result of his injury, he lost a lung, was partially paralysed and returned to Great Britain. On medical advice, Trenchard travelled to Switzerland to recuperate and boredom saw him taking up bobsleighing. After a heavy crash, Trenchard found that his paralysis was gone and that he could walk unaided. Following further recuperation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RAF Martlesham Heath
Royal Air Force Martlesham Heath or more simply RAF Martlesham Heath is a former Royal Air Force station located southwest of Woodbridge, Suffolk, England. It was active between 1917 and 1963, and played an important role in the development of Airborne Interception radar. History RFC/RAF prewar use Martlesham Heath was first used as a Royal Flying Corps airfield during the First World War. In 1917 it became home to the Aeroplane Experimental Unit, RFC which moved from Upavon with the site named as the Aeroplane Experimental Station which became the Aeroplane Experimental Establishment (Home) in 1920 which became the Aeroplane and Armament Experimental Establishment (A&AEE) in 1924. The A&AEE carried the evaluation and testing of many of the aircraft types and much of the armament and other equipment that would later be used during the Second World War. No. 22 Squadron RAF and No. 15 Squadron RAF were present during the 1920s. No. 64 arrived in the 1930s. RAF Fighter Command ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colindale
Colindale is a district in the London Borough of Barnet; its main shopping street on the A5 forming the borough boundary with neighbouring Brent. Colindale is a suburban area, and in recent years has had many new apartments built. It's also the location of the 1960s-1970s Grahame Park housing estate, built on former parts of Hendon Aerodrome. It is situated about northwest of Charing Cross, directly northwest of Hendon, to the south of Edgware and east of Queensbury. History Formerly in the borough and ancient parish of Hendon, the area was essentially the dale between Mill Hill and The Burroughs. By the middle of the 20th century, it had come to include that part of the Edgware Road between The Hyde and Burnt Oak. The area was originally called Collin Deep after the 16th-century family of John Collin. Until the 20th century, Colindale was without any buildings save for a large house called Colindale Lodge, Colindale Farm and a few cottages. A spelling with two Ls, 'Collin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hendon Aerodrome
Hendon Aerodrome was an aerodrome in London, England, that was an important centre for aviation from 1908 to 1968. It was situated in Colindale, north west of Charing Cross. It nearly became a central hub of civil aviation ("the Charing Cross of he UK'sinternational air routes"), but for the actions of the RAF after the First World War in reserving it for military aviation. It was known as a place of pioneering experiments including the first airmail, the first parachute descent from a powered aircraft, the first night flights, and the first aerial defence of a city. Beginnings Henry Coxwell and James Glaisher were the first to fly from Hendon in a balloon called the Mammoth in 1862. Ballooning at the Brent Reservoir was a popular spectacle for crowds on bank holidays late in the 19th century. The first powered flight from Hendon was in an long non-rigid airship built by Spencer Brothers of Highbury. It took off from the Welsh Harp Reservoir in 1909, piloted by Henry Spen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maiden Flight
The maiden flight, also known as first flight, of an aircraft is the first occasion on which it leaves the ground under its own power. The same term is also used for the first launch of rockets. The maiden flight of a new aircraft type is always a historic occasion for the type and can be quite emotional for those involved. In the early days of aviation it could be dangerous, because the exact handling characteristics of the aircraft were generally unknown. The maiden flight of a new type is almost invariably flown by a highly experienced test pilot. Maiden flights are usually accompanied by a chase plane, to verify items like altitude, airspeed, and general airworthiness. A maiden flight is only one stage in the development of an aircraft type. Unless the type is a pure research aircraft (such as the X-15), the aircraft must be tested extensively to ensure that it delivers the desired performance with an acceptable margin of safety. In the case of civilian aircraft, a new typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piston Engine
A reciprocating engine, also often known as a piston engine, is typically a heat engine that uses one or more reciprocating pistons to convert high temperature and high pressure into a rotating motion. This article describes the common features of all types. The main types are: the internal combustion engine, used extensively in motor vehicles; the steam engine, the mainstay of the Industrial Revolution; and the Stirling engine for niche applications. Internal combustion engines are further classified in two ways: either a spark-ignition (SI) engine, where the spark plug initiates the combustion; or a compression-ignition (CI) engine, where the air within the cylinder is compressed, thus heating it, so that the heated air ignites fuel that is injected then or earlier.''Thermodynamics: An Engineering Approach'' by Yunus A. Cengal and Michael A. Boles Common features in all types There may be one or more pistons. Each piston is inside a cylinder, into which a gas is intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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