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Aurora (aircraft)
Aurora was a rumored mid-1980s American reconnaissance aircraft. There is no substantial evidence that it was ever built or flown and it has been termed a myth."Aurora, Strategic Reconnaissance." ''AerospaceWeb.org.'' Retrieved: 17 October 2010. The U.S. government has consistently denied such an aircraft was ever built. Aviation and space reference site ''Aerospaceweb.org'' concluded, "The evidence supporting the Aurora is circumstantial or pure conjecture, there is little reason to contradict the government's position." Former |
Aurora X-plane 3
An aurora (plural: auroras or aurorae), also commonly known as the polar lights, is a natural light display in Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic). Auroras display dynamic patterns of brilliant lights that appear as curtains, rays, spirals, or dynamic flickers covering the entire sky. Auroras are the result of disturbances in the magnetosphere caused by the solar wind. Major disturbances result from enhancements in the speed of the solar wind from coronal holes and coronal mass ejections. These disturbances alter the trajectories of charged particles in the magnetospheric plasma. These particles, mainly electrons and protons, precipitate into the upper atmosphere (thermosphere/exosphere). The resulting ionization and excitation of atmospheric constituents emit light of varying colour and complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isosceles Triangle
In geometry, an isosceles triangle () is a triangle that has two sides of equal length. Sometimes it is specified as having ''exactly'' two sides of equal length, and sometimes as having ''at least'' two sides of equal length, the latter version thus including the equilateral triangle as a special case. Examples of isosceles triangles include the isosceles right triangle, the golden triangle, and the faces of bipyramids and certain Catalan solids. The mathematical study of isosceles triangles dates back to ancient Egyptian mathematics and Babylonian mathematics. Isosceles triangles have been used as decoration from even earlier times, and appear frequently in architecture and design, for instance in the pediments and gables of buildings. The two equal sides are called the legs and the third side is called the base of the triangle. The other dimensions of the triangle, such as its height, area, and perimeter, can be calculated by simple formulas from the lengths of the legs an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern California
Southern California (commonly shortened to SoCal) is a geographic and Cultural area, cultural region that generally comprises the southern portion of the U.S. state of California. It includes the Los Angeles metropolitan area, the second most populous urban agglomeration in the United States. The region generally contains ten of California's 58 counties: Imperial County, California, Imperial, Kern County, California, Kern, Los Angeles County, California, Los Angeles, Orange County, California, Orange, Riverside County, California, Riverside, San Bernardino County, California, San Bernardino, San Diego County, California, San Diego, Santa Barbara County, California, Santa Barbara, San Luis Obispo County, California, San Luis Obispo and Ventura County, California, Ventura counties. The Colorado Desert and the Colorado River are located on Southern California's eastern border with Arizona, and San Bernardino County shares a border with Nevada to the northeast. Southern California's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonic Boom
A sonic boom is a sound associated with shock waves created when an object travels through the air faster than the speed of sound. Sonic booms generate enormous amounts of sound energy, sounding similar to an explosion or a thunderclap to the human ear. A decibel is the primary unit measurement of sound. "A thunderclap is incredibly loud, producing levels between 100 and 120 dBA (Decibel, decibels A)- the equivalent of standing near a jet during take-off." The crack of a supersonic bullet passing overhead or the crack of a bullwhip are examples of a sonic boom in miniature. Sonic booms due to large supersonic aircraft can be particularly loud and startling, tend to awaken people, and may cause minor damage to some structures. This led to prohibition of routine supersonic flight overland. Although they cannot be completely prevented, research suggests that with careful shaping of the vehicle, the nuisance due to the sonic booms may be reduced to the point that overland super ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tarpaulin
A tarpaulin ( , ) or tarp is a large sheet of strong, flexible, water-resistant or waterproof material, often cloth such as canvas or polyester coated with polyurethane, or made of plastics such as polyethylene. Tarpaulins often have reinforced grommets at the corners and along the sides to form attachment points for rope, allowing them to be tied down or suspended. Inexpensive modern tarpaulins are made from woven polyethylene; this material is so associated with tarpaulins that it has become colloquially known in some quarters as polytarp. Uses Tarpaulins are used in many ways to protect persons and things from wind, rain, and sunlight. They are used during construction or after disasters to protect partially built or damaged structures, to prevent mess during painting and similar activities, and to contain and collect debris. They are used to protect the loads of open trucks and wagons, to keep wood piles dry, and for shelters such as tents or other temporary structures. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agusta 109
The AgustaWestland AW109, originally the Agusta A109, is a lightweight, twin-engine, eight-seat multi-purpose helicopter designed and initially produced by the Italian rotorcraft manufacturer Agusta. It was the first all-Italian helicopter to be mass-produced."Law Enforcement: Italy." ''Police Aviation News'', No. 175. November 2010. Its production has been continued by Agusta's successor companies, presently (formerly , merged into the new |
Special Air Service
The Special Air Service (SAS) is a special forces unit of the British Army. It was founded as a regiment in 1941 by David Stirling and in 1950, it was reconstituted as a corps. The unit specialises in a number of roles including counter-terrorism, hostage rescue, direct action and covert reconnaissance. Much of the information about the SAS is highly classified, and the unit is not commented on by either the British government or the Ministry of Defence due to the secrecy and sensitivity of its operations. The corps currently consists of the 22 Special Air Service Regiment, the regular component, as well as the 21 Special Air Service Regiment (Artists) (Reserve) and the 23 Special Air Service Regiment (Reserve), which are reserve units, all under the operational command of United Kingdom Special Forces (UKSF). Its sister unit is the Royal Navy's Special Boat Service which specialises in maritime counter-terrorism. Both units are under the operational control of the Directo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AirForces Monthly
''Air Forces Monthly'' is a military aviation magazine published by Key Publishing, and based in Stamford, Lincolnshire, United Kingdom. It was established in 1988. It provides news and analysis on military aviation, technology and related topics. ''The Independent'' claims that "Air Forces Monthly is widely read in the MoD and in the defence industry, both in Britain and in the US." In 1997, an AFM report that a military aircraft crash at Boscombe Down in September 1994 involved a classified Aurora aircraft prompted denials from the Ministry of Defence and the United States Defense Department. Sister publications include ''Air International'', ''Air Enthusiast'', '' Airliner World'', and ''FlyPast A flypast is a ceremonial or honorific flight by an aircraft or group of aircraft. The term flypast is used in the United Kingdom and the Commonwealth. In the United States, the terms flyover and flyby are used. Flypasts are often tied in w ...''. References External links ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wiltshire
Wiltshire (; abbreviated Wilts) is a historic and ceremonial county in South West England with an area of . It is landlocked and borders the counties of Dorset to the southwest, Somerset to the west, Hampshire to the southeast, Gloucestershire to the north, Oxfordshire to the northeast and Berkshire to the east. The county town was originally Wilton, after which the county is named, but Wiltshire Council is now based in the county town of Trowbridge. Within the county's boundary are two unitary authority areas, Wiltshire and Swindon, governed respectively by Wiltshire Council and Swindon Borough Council. Wiltshire is characterised by its high downland and wide valleys. Salisbury Plain is noted for being the location of the Stonehenge and Avebury stone circles (which together are a UNESCO Cultural and World Heritage site) and other ancient landmarks, and as a training area for the British Army. The city of Salisbury is notable for its medieval cathedral. Swindon is the ... [...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] |
Tom King, Baron King Of Bridgwater
Thomas Jeremy King, Baron King of Bridgwater, (born 13 June 1933) is a British politician. A member of the Conservative Party, he served in the Cabinet from 1983 to 1992, and was the Member of Parliament (MP) for the constituency of Bridgwater in Somerset from 1970 to 2001. He was made a life peer in 2001. Life and career Education King was educated at two independent schools: at St Michael's School, a former boys' preparatory school (later co-educational), in the village of Tawstock in North Devon, followed by Rugby School (Sheriff House), a boarding school for boys in Warwickshire, before attending Emmanuel College, Cambridge. Military service King was commissioned as an officer in the Somerset Light Infantry in 1952 and during his period of national service he was seconded to the King's African Rifles. Political career King was elected to Parliament at the 1970 Bridgwater by-election, following the death of the sitting MP, Sir Gerald Wills. King was brought into the Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secretary Of State For Defence
The secretary of state for defence, also referred to as the defence secretary, is a secretary of state in the Government of the United Kingdom, with overall responsibility for the business of the Ministry of Defence. The incumbent is a member of the Cabinet of the United Kingdom. The post of Secretary of State for Defence was created on 1 April 1964 replacing the positions of Minister of Defence, First Lord of the Admiralty, Secretary of State for War and Secretary of State for Air, while the individual offices of the British Armed Forces were abolished and their functions transferred to the Ministry of Defence. In 1997, Michael Portillo was filling this post at the time of the Portillo moment. In 2019, Penny Mordaunt became the UK's first female defence secretary. The postholder is supported by the other ministers in the Defence Ministerial team and the MOD permanent secretary. The corresponding shadow minister is the shadow secretary of state for defence, and the sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
