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Fairey Delta 2
The Fairey Delta 2 or FD2 (internal designation Type V within Fairey) is a British supersonic research aircraft that was produced by the Fairey Aviation Company in response to a specification from the Ministry of Supply for a specialised aircraft for conducting investigations into flight and control at transonic and supersonic speeds. Features included a delta wing and a drooped nose. On 6 October 1954, the Delta 2 made its maiden flight, flown by Fairey test pilot Peter Twiss; two aircraft would be produced. The Delta 2 was the final aircraft to be produced by Fairey as an independent manufacturer. The Fairey Delta 2 was the first jet aircraft to exceed in level flight. On 10 March 1956, it set a new world speed record of , exceeding the previous official record by . The Delta 2 held the absolute World Air Speed Record for over a year. It continued to be used for flight testing, and was allocated to the Royal Aircraft Establishment (RAE) in 1958. A testbed aircraft was requi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fairey Aviation Company
The Fairey Aviation Company Limited was a British aircraft manufacturer of the first half of the 20th century based in Hayes in Middlesex and Heaton Chapel and RAF Ringway in Cheshire. Notable for the design of a number of important military aircraft, including the Fairey III family, the Swordfish, Firefly, and Gannet, it had a strong presence in the supply of naval aircraft, and also built bombers for the RAF. After World War II the company diversified into mechanical engineering and boat-building. The aircraft manufacturing arm was taken over by Westland Aircraft in 1960. Following a series of mergers and takeovers, the principal successor businesses to the company now trade as FBM Babcock Marine Ltd, Spectris plc, and WFEL (formerly Williams Fairey Engineering Limited), the latter manufacturing portable bridges. History Founded in 1915 by Charles Richard Fairey (later Sir Richard Fairey) and Belgian engineer Ernest Oscar Tips on their departure from Short Brothers, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operational Requirement F
An operational definition specifies concrete, replicable procedures designed to represent a construct. In the words of American psychologist S.S. Stevens (1935), "An operation is the performance which we execute in order to make known a concept." For example, an operational definition of "fear" (the construct) often includes measurable physiologic responses that occur in response to a perceived threat. Thus, "fear" might be operationally defined as specified changes in heart rate, galvanic skin response, pupil dilation, and blood pressure. Overview An operational definition is designed to model or represent a concept or theoretical definition, also known as a construct. Scientists should describe the operations (procedures, actions, or processes) that define the concept with enough specificity such that other investigators can replicate their research. Operational definitions are also used to define system states in terms of a specific, publicly accessible process of preparation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swept Wing
A swept wing is a wing that angles either backward or occasionally forward from its root rather than in a straight sideways direction. Swept wings have been flown since the pioneer days of aviation. Wing sweep at high speeds was first investigated in Germany as early as 1935 by Albert Betz and Adolph Busemann, finding application just before the end of the Second World War. It has the effect of delaying the shock waves and accompanying aerodynamic drag rise caused by fluid compressibility near the speed of sound, improving performance. Swept wings are therefore almost always used on jet aircraft designed to fly at these speeds. The term "swept wing" is normally used to mean "swept back", but variants include forward sweep, variable sweep wings and oblique wings in which one side sweeps forward and the other back. The delta wing is also aerodynamically a form of swept wing. Reasons for sweep There are three main reasons for sweeping a wing: 1. to arrange the center of gravity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gloster Javelin
The Gloster Javelin is a twin-engined T-tailed delta-wing subsonic night and all-weather interceptor aircraft that served with Britain's Royal Air Force from the mid-1950s until the late 1960s. The last aircraft design to bear the Gloster name, it was introduced in 1956 after a lengthy development period and received several upgrades during its lifetime to its engines, radar and weapons, which included the De Havilland Firestreak air-to-air missile. The Javelin was succeeded in the interceptor role by the English Electric Lightning, a supersonic aircraft capable of flying at more than double the Javelin's top speed, which was introduced into the RAF only a few years later. The Javelin served for much of its life alongside the Lightning; the last Javelins were withdrawn from operational service in 1968 following the introduction of successively more capable versions of the Lightning. Development Origins In the aftermath of the Second World War, Britain identified a threat pose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawker Hunter
The Hawker Hunter is a transonic British jet-powered fighter aircraft that was developed by Hawker Aircraft for the Royal Air Force (RAF) during the late 1940s and early 1950s. It was designed to take advantage of the newly developed Rolls-Royce Avon turbojet engine and the swept wing, and was the first jet-powered aircraft produced by Hawker to be procured by the RAF. On 7 September 1953, the modified first prototype broke the world air speed record for aircraft, achieving a speed of . The single-seat Hunter was introduced to service in 1954 as a manoeuvrable day interceptor aircraft, quickly succeeding first-generation jet fighters in RAF service such as the Gloster Meteor and the de Havilland Venom. The all-weather/night fighter role was filled by the Gloster Javelin. Successively improved variants of the type were produced, adopting increasingly more capable engine models and expanding its fuel capacity amongst other modifications being implemented. Hunters were also us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean War
, date = {{Ubl, 25 June 1950 – 27 July 1953 (''de facto'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950, month2=7, day2=27, year2=1953), 25 June 1950 – present (''de jure'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950) , place = Korean Peninsula, Yellow Sea, Sea of Japan, Korea Strait, China–North Korea border , territory = Korean Demilitarized Zone established * North Korea gains the city of Kaesong, but loses a net total of {{Convert, 1506, sqmi, km2, abbr=on, order=flip, including the city of Sokcho, to South Korea. , result = Inconclusive , combatant1 = {{Flag, First Republic of Korea, name=South Korea, 1949, size=23px , combatant1a = {{Plainlist , * {{Flagicon, United Nations, size=23px United Nations Command, United Nations{{Refn , name = nbUNforces , group = lower-alpha , On 9 July 1951 troop constituents were: US: 70.4%, ROK: 23.3% other UNC: 6.3%{{Cite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First-generation Jet Fighter
Jet fighter generations classify the major technology leaps in the historical development of the jet fighter. Different authorities have identified different technology jumps as the key ones, dividing fighter development into different numbers of generations. Five generations are now widely recognised, with the development of a sixth under way.Baker 2018 Classification In 1990, air historian Richard P. Hallion proposed a classification of jet fighters into six generations up to that time. Other schemes comprising five generations up to around the same period have since been described, although the demarcation lines between generations differ. Taylor and Guilmartin name four; subsonic, transonic, supersonic and Mach 2, and add a fifth "new" generation with multimission capability and culminating in types such as the F-16 and MiG-29. A NASA web publication divides jet development into five stages; pioneer (straight wing), swept wing, transonic, the 1960s and 1970s on, culminating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Air Force
The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) and the Royal Naval Air Service (RNAS). Following the Allied victory over the Central Powers in 1918, the RAF emerged as the largest air force in the world at the time. Since its formation, the RAF has taken a significant role in British military history. In particular, it played a large part in the Second World War where it fought its most famous campaign, the Battle of Britain. The RAF's mission is to support the objectives of the British Ministry of Defence (MOD), which are to "provide the capabilities needed to ensure the security and defence of the United Kingdom and overseas territories, including against terrorism; to support the Government's foreign policy objectives particularly in promoting international peace and security". The R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MoD Boscombe Down
MoD Boscombe Down ' is the home of a military aircraft testing site, on the southeastern outskirts of the town of Amesbury, Wiltshire, England. The site is managed by QinetiQ, the private defence company created as part of the breakup of the Defence Evaluation and Research Agency (DERA) in 2001 by the UK Ministry of Defence (MoD). The base was originally conceived, constructed, and operated as Royal Air Force Boscombe Down, more commonly known as RAF Boscombe Down, and since 1939, has evaluated aircraft for use by the British Armed Forces. The airfield has two runways, one in length, and the second . The airfield's evaluation centre is currently home to Rotary Wing Test and Evaluation Squadron (RWTS), Fast Jet Test Squadron (FJTS), Heavy Aircraft Test Squadron (HATS), Handling Squadron, and the Empire Test Pilots' School (ETPS). History First World War An aerodrome opened at the Boscombe Down site in October 1917 and operated as a Royal Flying Corps Training Depot Station. Kn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fairey Delta 1
The Fairey Delta 1 (FD1) was a research aircraft developed and produced by British aircraft manufacturer Fairey Aviation. It holds the distinction of being the first British-designed aircraft to be furnished with a delta wing. Initially referred to as the ''Type R'', work on the aircraft had begun with the intention of developing a ramp-launched vertical takeoff (VTO) fighter. As its design was refined, the VTO features were discarded, instead exploring other concepts in line with Air Ministry Specification E.10/47. Accordingly, the aircraft was developed to investigate the then-unfamiliar qualities of the delta wing, particularly its flight characteristics when flown at transonic speeds. A total of three aircraft were ordered by the Ministry of Supply (MoS). The type received the name "Fairey Delta" shortly thereafter. The first aircraft was produced at Fairey's facility in Heaton Chapel, Stockport. Ground testing commenced during mid-1950. On 12 March 1951, the FD1 perform ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woomera, Australia
Woomera, unofficially Woomera village, refers to the domestic area of RAAF Base Woomera. Woomera village has always been a Defence-owned and operated facility. The village is located on the traditional lands of the Kokatha people in the Far North (South Australia), Far North region of South Australia, but is on Commonwealth-owned land and within the area designated as the 'Woomera Prohibited Area' (WPA). The village is approximately north of Adelaide. In common usage, "Woomera" refers to the wider RAAF Woomera Range Complex (WRC), a large Australian Defence Force aerospace and systems testing range (the 'Woomera Test Range' (WTR)) covering an area of approximately and is operated by the Royal Australian Air Force. Woomera 'village' is part of RAAF Base Woomera which, along with the ''Woomera Test Range'' (WTR), forms the larger entity known as the Woomera Range Complex (WRC), promulgated by Chief of Air Force (Australia), Chief of Air Force (CAF) in June 2014. As at the the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wales
Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the Bristol Channel to the south. It had a population in 2021 of 3,107,500 and has a total area of . Wales has over of coastline and is largely mountainous with its higher peaks in the north and central areas, including Snowdon (), its highest summit. The country lies within the Temperateness, north temperate zone and has a changeable, maritime climate. The capital and largest city is Cardiff. Welsh national identity emerged among the Celtic Britons after the Roman withdrawal from Britain in the 5th century, and Wales was formed as a Kingdom of Wales, kingdom under Gruffydd ap Llywelyn in 1055. Wales is regarded as one of the Celtic nations. The Conquest of Wales by Edward I, conquest of Wales by Edward I of England was completed by 1283, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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