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No. 521 Squadron RAF
No. 521 Squadron of the Royal Air Force was a Second World War meteorological observation unit operating from Norfolk. History First formation The Squadron began on 4 February 1941 as No. 401 (Met) Flight of RAF Bomber Command. When all the meteorological flights were put under RAF Coastal Command it became No. 1401 (Met) Flight. On 1 August 1942 at RAF Bircham Newton the flight combined with 1403 flight to form No. 521 (met) Squadron. It took part in Coastal Command's Meteorological operations The squadron had inherited from its 1401 flight aircraft such as Gloster Gladiator biplanes and some Hawker Hurricanes. From 1403 flight came its Bristol Blenheims and Lockheed Hudsons. Later the squadron received some Supermarine Spitfires and de Havilland Mosquitos. The operations of the original Flights and later the Squadron was taking meteorological information for weather forecasting – previously provided by merchant shipping to the Met Office. The aircraft would take measu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many List of islands of the United Kingdom, smaller islands within the British Isles. Northern Ireland shares Republic of Ireland–United Kingdom border, a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humidity
Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. Humidity indicates the likelihood for precipitation, dew, or fog to be present. Humidity depends on the temperature and pressure of the system of interest. The same amount of water vapor results in higher relative humidity in cool air than warm air. A related parameter is the dew point. The amount of water vapor needed to achieve saturation increases as the temperature increases. As the temperature of a parcel of air decreases it will eventually reach the saturation point without adding or losing water mass. The amount of water vapor contained within a parcel of air can vary significantly. For example, a parcel of air near saturation may contain 28 g of water per cubic metre of air at , but only 8 g of water per cubic metre of air at . Three primary measurements of humidity are widely employed: absolute, relative, and specific. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scotland
Scotland (, ) is a Countries of the United Kingdom, country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a Anglo-Scottish border, border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the north and west, the North Sea to the northeast and east, and the Irish Sea to the south. It also contains more than 790 Islands of Scotland, islands, principally in the archipelagos of the Hebrides and the Northern Isles. Most of the population, including the capital Edinburgh, is concentrated in the Central Belt—the plain between the Scottish Highlands and the Southern Uplands—in the Scottish Lowlands. Scotland is divided into 32 Subdivisions of Scotland, administrative subdivisions or local authorities, known as council areas. Glasgow, Glasgow City is the largest council area in terms of population, with Highland (council area), Highland being the largest in terms of area. Limi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caithness
Caithness ( gd, Gallaibh ; sco, Caitnes; non, Katanes) is a historic county, registration county and lieutenancy area of Scotland. Caithness has a land boundary with the historic county of Sutherland to the west and is otherwise bounded by sea. The land boundary follows a watershed and is crossed by two roads (the A9 and the A836) and by one railway (the Far North Line). Across the Pentland Firth, ferries link Caithness with Orkney, and Caithness also has an airport at Wick. The Pentland Firth island of Stroma is within Caithness. The name was also used for the earldom of Caithness ( 1334 onwards) and for the Caithness constituency of the Parliament of the United Kingdom (1708 to 1918). Boundaries are not identical in all contexts, but the Caithness area lies entirely within the Highland council area. Toponymy The ''Caith'' element of the name ''Caithness'' comes from the name of a Pictish tribe known as the ''Cat'' or ''Catt'' people, or ''Catti'' (see Kingd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RAF Skitten
Royal Air Force Skitten or more simply RAF Skitten is a former Royal Air Force satellite station directly east of the village of Killimster, located north east of Watten, Caithness, Scotland and northwest of Wick, Caithness, Scotland. On 19 November 1942, Operation Freshman departed from RAF Skitten. History ;Squadrons: ;Units: * No. 1693 (General Reconnaissance) Flight (September - December 1943) * No. 2709 Squadron RAF Regiment * No. 2716 Squadron RAF Regiment * No. 4010 Anti-Aircraft Flight RAF Regiment Current use The site is now used for quarrying and as farmland. See also * List of former Royal Air Force stations This list of former RAF stations includes most of the stations, airfields and administrative headquarters previously used by the Royal Air Force. The stations are listed under any former county or country name which was appropriate for the du ... References Citations Bibliography * * * * {{DEFAULTSORT:Skitten Royal Air Force stations of Wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridgeshire
Cambridgeshire (abbreviated Cambs.) is a county in the East of England, bordering Lincolnshire to the north, Norfolk to the north-east, Suffolk to the east, Essex and Hertfordshire to the south, and Bedfordshire and Northamptonshire to the west. The city of Cambridge is the county town. Following the Local Government Act 1972 restructuring, modern Cambridgeshire was formed in 1974 through the amalgamation of two administrative counties: Cambridgeshire and Isle of Ely, comprising the historic county of Cambridgeshire (including the Isle of Ely); and Huntingdon and Peterborough, comprising the historic county of Huntingdonshire and the Soke of Peterborough, historically part of Northamptonshire. Cambridgeshire contains most of the region known as Silicon Fen. The county is now divided between Cambridgeshire County Council and Peterborough City Council, which since 1998 has formed a separate unitary authority. In the non-metropolitan county there are five district counc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RAF Oakington
Royal Air Force Oakington or more simply RAF Oakington was a Royal Air Force station located north of Oakington, Cambridgeshire, England and north-west of Cambridge. History Second World War Construction was started in 1939, but was affected by the outbreak of war. The original plan called for Type-C hangars but two type J were erected instead. It was used by No. 2 Group in July 1940 for No. 218 Squadron which had recently returned from France. In September, Oakington was passed on for the No. 2 Group which stationed the first Short Stirling Squadron No. 7. The newly formed No. 3 Photographic Reconnaissance Unit RAF started to use RAF Oakington to conduct high altitude work for Bomber Command's target. However, there were poor surface conditions at RAF Oakington so No. 3 PRU often operated from RAF Alconbury. Post war During the 1950s RAF Oakington was an Advanced Flying Training School, No. 5 Flying Training School RAF (5 FTS), which reformed at the airfield on 1 Jun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RAF Chivenor
Royal Air Force Chivenor or RAF Chivenor was a Royal Air Force station located on the northern shore of the River Taw estuary, on the north coast of Devon, England. The nearest towns are Barnstaple and Braunton. Originally a civil airfield opened in the 1930s, the site was taken over by the Royal Air Force (RAF) in May 1940 for use as a RAF Coastal Command Station. After the Second World War, the station was largely used for training, particularly weapons training. During the 1950s and 1960s, No. 229 Operational Conversion Unit RAF (229 OCU) used Hawker Hunter aircraft for training. In 1974 the station was left on "care and maintenance", though No. 624 Volunteer Gliding Squadron (624 VGS) continued to fly from there. The RAF returned in 1979, forming 2 Tactical Weapons Unit (2 TWU) which flew BAE Systems Hawks, from 1979 until the unit was renamed as No. 7 Flying Training School RAF (7 FTS) in 1992. In 1994, 7 FTS left Chivenor, merging with No. 4 Flying Training School RAF ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Handley Page Halifax
The Handley Page Halifax is a British Royal Air Force (RAF) four-engined heavy bomber of the Second World War. It was developed by Handley Page to the same specification as the contemporary twin-engine Avro Manchester. The Halifax has its origins in the twin-engine ''HP56'' proposal of the late 1930s, produced in response to the British Air Ministry's Specification P.13/36 for a capable medium bomber for "world-wide use." The HP56 was ordered as a backup to the Avro 679, both aircraft being designed to use the underperforming Rolls-Royce Vulture engine. The Handley Page design was altered at the Ministry to a four-engine arrangement powered by the Rolls-Royce Merlin engine; the rival Avro 679 was produced as the twin-engine Avro Manchester which, while regarded as unsuccessful mainly due to the Vulture engine, was a direct predecessor of the famed Avro Lancaster. Both the Lancaster and the Halifax emerged as capable four-engined strategic bombers, thousands of which were built ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
B-17 Flying Fortress
The Boeing B-17 Flying Fortress is a four-engined heavy bomber developed in the 1930s for the United States Army Air Corps (USAAC). Relatively fast and high-flying for a bomber of its era, the B-17 was used primarily in the European Theater of Operations and dropped more bombs than any other aircraft during World War II. It is the third-most produced bomber of all time, behind the four-engined Consolidated B-24 Liberator and the multirole, twin-engined Junkers Ju 88. It was also employed as a transport, antisubmarine aircraft, drone controller, and search-and-rescue aircraft. In a USAAC competition, Boeing's prototype Model 299/XB-17 outperformed two other entries but crashed, losing the initial 200-bomber contract to the Douglas B-18 Bolo. Still, the Air Corps ordered 13 more B-17s for further evaluation, then introduced it into service in 1938. The B-17 evolved through numerous design advances but from its inception, the USAAC (later, the USAAF) promoted the aircraft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RAF Langham
Royal Air Force Langham or more simply RAF Langham is a former Royal Air Force station, located at Langham, northwest of Norwich in the English county of Norfolk. It operated between 1940 and 1961. The airfield was the most northerly of the wartime RAF airfields in Norfolk and its position, just from the North Sea at Blakeney, made it a suitable site for RAF Coastal Command aircraft. The airfield was built during the first few months of the Second World War as a dispersal and satellite station to RAF Bircham Newton. It became operational in the summer of 1940. History The airfield was originally laid out with three grass runways. The station became fully self-supporting in 1942, when it was upgraded with three concrete runways (tar-covered), three T2 type and four Blister hangars, an encircling perimeter track and 36 spectacle-shape hardstandings, plus a Type 12779/41 control tower and normal Mk 2 approach lighting for night operations. Primarily used by RAF Coastal Comma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lockheed Ventura
The Lockheed Ventura is a twin-engine medium bomber and patrol bomber of World War II. The Ventura first entered combat in Europe as a bomber with the RAF in late 1942. Designated PV-1 by the United States Navy (US Navy), it entered combat in 1943 in the Pacific. The bomber was also used by the United States Army Air Forces (USAAF), which designated it the Lockheed B-34 (''Lexington'') and B-37 as a trainer. Commonwealth of Nations, British Commonwealth forces also used it in several guises, including antishipping and antisubmarine search and attack. The Ventura was developed from the Lockheed Model 18 Lodestar transport, as a replacement for the Lockheed Hudson bombers then in service with the Royal Air Force. Used in daylight attacks against occupied Europe, they proved to have weaknesses and were removed from bomber duty and some used for patrols by Coastal Command. After USAAF monopolization of land-based bombers was removed, the US Navy ordered a revised design which enter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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