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Airco DH9
The Airco DH.9 (from Geoffrey de Havilland, de Havilland 9) – also known after 1920 as the de Havilland DH.9 – is a British single-engined biplane bomber that was developed and deployed during the World War I, First World War. The DH.9 was a development of Airco's earlier successful Airco DH.4, DH.4, with which it shared many components. These were mated to an all-new fuselage and the Beardmore Halford Pullinger#230 hp BHP engine, 230 hp BHP 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 BHP 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 (World War I), Western Front. The redesigned Airco DH.9 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bomber
A bomber is a military combat aircraft that utilizes air-to-ground weaponry to drop bombs, launch aerial torpedo, torpedoes, or deploy air-launched cruise missiles. 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, reducing industrial output, or inflicting massive civilian casualties to an extent deemed to force surrender. Tactical bombing is aimed at countering enemy military activity and in supporting offensive operations, and is typically assigned to smaller aircraft operating at shorter ranges, typically near the troops on the ground or against enemy shipping. Bombs were first dropped from an aircraft during the Italo-Turkish War, with the first major deployments coming in the World War I, First World War and World War II, Seco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siddeley-Deasy
The Siddeley-Deasy Motor Car Company Limited was a British automobile, aero engine and aircraft company based in Coventry in the early 20th century. It was central to the formation, by merger and buy-out, of the later Armstrong Siddeley Motor and Armstrong Whitworth Aircraft companies. History The Deasy Motor Car Manufacturing Company Limited was founded by Henry Hugh Peter Deasy in the factory that had previously been used to manufacture Iden cars. Deasy left in 1908 following disagreements with his Chief Engineer. In 1910 John Davenport Siddeley, 1st Baron Kenilworth, J D Siddeley took up the appointment of managing director having moved to Deasy in 1909 from managing Wolseley Motors, Wolseley. The shareholders were so pleased with his success that on 7 November 1912 they unanimously agreed to change the company's name to The Siddeley-Deasy Motor Car Company Limited. Siddeley's name had been added to the product's radiator in 1912.Bill Smith, ''Armstrong Siddeley Motors'' D ... [...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 c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secretary Of State For Air
The Secretary of State for Air was a secretary of state position in the British government that 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 The Royal Air Force (RAF) is the Air force, air and space force of the United Kingdom, British Overseas Territories and Crown Dependencies. It was formed towards the end of the World War I, First World War on 1 April 1918, on the merger of t .... 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, 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 Defenc ... [...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 military 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, he served in India; with the outbreak of the Boer War, he volunteered for service in South Africa. While fighting the Boers, he was critically wounded; 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, but owing to the boredom he suffered, took up bobsleighing. After a heavy crash, he 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 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, next became the Aeroplane Experimental Establishment (Home) in 1920 and then 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 use The A&AEE ... [...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 is 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, ' ... [...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 [the UK's] international 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 Tracey Coxwell, 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, ... [...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. 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 type must be certified by a governing agency (such as the Federal Aviation Administration in the United States) before it can enter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piston Engine
A reciprocating engine, more often known as a piston engine, is a heat engine that uses one or more Reciprocating motion, reciprocating pistons to convert high temperature and high pressure into a Circular motion, 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 engine, spark-ignition (SI) engine, where the spark plug initiates the combustion; or a compression-ignition engine, compression-ignition (CI) engine, where the air within the cylinder is compressed, Adiabatic process, thus heating it, so that the heated air ignites fuel that is injected diesel engine, then or hot-bulb engine, earlier.''Thermodynamics: An Engineering Approach'' by Yunus A. Cengal and Michael A. Boles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Gunner
An air gunner or aerial gunner is a member of a military aircrew who operates flexible-mount or turret-mounted machine guns or autocannons in an aircraft. Modern aircraft weapons are usually operated automatically without the need for a dedicated air gunner, but older generation (World War II and earlier) bombers used to carry up to eight air gunners. Most modern air gunners are helicopter door gunners, who typically have other primary roles such as crew chief or observer in addition to their air gunner role. Others fly as members of aircrews on gunships, where their duties may include loading guns or manually firing them if computer systems fail. A modern gunner can be someone who operates armament on an aircraft besides the pilot An aircraft pilot or aviator is a person who controls the flight of an aircraft by operating its Aircraft flight control system, directional flight controls. Some other aircrew, aircrew members, such as navigators or flight engineers, are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
