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Chain Home Low
Chain Home Low (CHL) was the name of a British early warning radar system operated by the RAF during World War II. The name refers to CHL's ability to detect aircraft flying at altitudes below the capabilities of the original Chain Home (CH) radars, where most CHL radars were co-located. CHL could reliably detect aircraft flying as low as . The official name was AMES Type 2, referring to the Air Ministry Experimental Station at Bawdsey Manor where it was developed, but this name was almost never used in practice. The system had originally been developed by the British Army's research group, also based at Bawdsey, as a system for detecting enemy shipping in the English Channel. It was built using the electronics being developed for the Airborne Interception radar systems, which worked on the 1.5 m band. This high-frequency (200 MHz), for the era, allowed it to use smaller antennas that could be swung back and forth to look for returns, in contrast to the enormous fixed anten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hopton-on-Sea
Hopton-on-Sea is a village, civil parish and seaside resort on the coast of East Anglia in the county of Norfolk. The village is south of Great Yarmouth, north-west of Lowestoft and near the UK's most easterly point, Lowestoft Ness. The village has many amenities for tourists with amusement arcades and food outlets. It is also home to Potters Resort, the first permanent, mixed-use holiday camp in the UK, founded in 1920. This employs approximately 560 permanent staff making it the largest private sector employer in the area. Every January, Hopton-on-Sea hosts the World Indoor Bowls Championships at Potters Resort with players, spectators, the BBC and many others staying in the village for what is regarded as the biggest event in the bowls calendar. History The villages name means 'Farm/settlement in enclosed spot'. Here perhaps it's referring to the promontory jutting into marsh. The earliest human activity in the parish dates to the Palaeolithic era with the discover ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Night Fighter
A night fighter (also known as all-weather fighter or all-weather interceptor for a period of time after the Second World War) is a fighter aircraft adapted for use at night or in other times of bad visibility. Night fighters began to be used in World War I and included types that were specifically modified to operate at night. During the Second World War, night fighters were either purpose-built night fighter designs, or more commonly, heavy fighters or light bombers adapted for the mission, often employing radar or other systems for providing some sort of detection capability in low visibility. Many night fighters of the conflict also included instrument landing systems for landing at night, as turning on the runway lights made runways into an easy target for opposing intruders. Some experiments tested the use of day fighters on night missions, but these tended to work only under very favourable circumstances and were not widely successful. Avionics systems were greatly mini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GL Mk
GL, Gl, or gl may refer to: Businesses and brands *Air Greenland, IATA airline designator *Germanischer Lloyd, a classification society * GlobalLogic, a Digital Product Engineering Services company Government and military * GreenLeft, a Dutch political party * Green-Libertarian, a North American political philosophy * Gwardia Ludowa, a Polish resistance group during World War II * Grenade launcher, a military weapon Language * Galician language (ISO 639 alpha-2 language code) * Good Luck, in Internet slang * Palatal lateral approximant, a digraph in Italian Miscellaneous media * Girls' love, an anime and manga jargon term for lesbian fiction * Golden Lovers, a Japanese professional wrestling team * ''Good Luck!!'', a 2003 television drama * Green Lantern, any of a number of similarly themed DC Comics characters * ''Guiding Light'', an American soap opera * ''Gurren Lagann'', a 2007 Japanese anime People *G. L. Peiris, Sri Lankan politician and academic *Gary Lightbody, lead s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-aircraft Artillery
Anti-aircraft warfare, counter-air or air defence forces is the battlespace response to aerial warfare, defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It includes surface based, subsurface ( submarine launched), and air-based weapon systems, associated sensor systems, command and control arrangements, and passive measures (e.g. barrage balloons). It may be used to protect naval, ground, and air forces in any location. However, for most countries, the main effort has tended to be homeland defence. NATO refers to airborne air defence as counter-air and naval air defence as anti-aircraft warfare. Missile defence is an extension of air defence, as are initiatives to adapt air defence to the task of intercepting any projectile in flight. In some countries, such as Britain and Germany during the Second World War, the Soviet Union, and modern NATO and the United States, ground-based air defence and air defence aircraft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar, Anti-Aircraft
Radar, Anti-Aircraft, or simply AA radar for short, was a classification system for British Army radars introduced in 1943 and used into the 1960s when these systems were replaced by missiles with their own integral radar systems. The classification included subcategories, Number 1 through 8, as well as the many individual systems which were assigned Marks. Some of the Army radars pre-date the introduction of this classification system and had their own nomenclature that tended to remain in use even after they officially received new names. Notable among these are the Gun Laying and Searchlight Control categories. Additionally, equipment introduced after the classification system often have rainbow codes that they are well known by. Some were also used by the Royal Air Force and thus also had an AMES number. Number 1 AA Number 1 was assigned to the early gun laying radars operating in the 1.5 m VHF band. They were almost always referred to by their original name, GL Mk. I rada ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Beaumont Wood
Albert Beaumont Wood DSc (1890 – 19 July 1964), better known as A B Wood, was a British physicist, known for his pioneering work in the field of underwater acoustics and sonar. Wood is known for his work on developing sonar (known at that time as 'ASDICS') in the UK from the First World War until after the Second World War. Education He graduated from Manchester University with First Class Honours in 1912, where he joined a team of notable scientists led by Sir Ernest Rutherford (later Lord Rutherford), including Henry Moseley, Hans Geiger, Niels Bohr, Ernest Marsden, James Chadwick, George de Hevesy and Charles Galton Darwin. In 1914 he was appointed a research fellow at the University of Liverpool and then a lecturer in physics. He still kept in touch with Rutherford, who was working on underwater acoustics, and arranged for him to work on countering the German naval threat. He was awarded his DSc degree by his university in 1919 and became a Fellow of the Physical Society ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tizard Committee
The Committee for the Scientific Survey of Air Defence (CSSAD), also known as the Tizard Committee after its chairman, Henry Tizard, was a pre-World War II scientific mission to study the needs of anti-aircraft warfare in the United Kingdom. The Committee is best known for its role in shepherding the development of radar, and the building of the Chain Home radar array and its associated control centres. Winston Churchill credited the success of the Battle of Britain to this work. CSSAD was formed in 1934. In September 1939, it was merged with the Committee for the Scientific Survey of Air Offence, which had been formed in 1937, and was also chaired by Tizard, to form the Committee for the Scientific Survey of Air Warfare (CSSAW). Tizard helped convince Churchill to hand over Britain's most important secret weapons technology to the Americans with no strings attached. The Tizard Mission The Tizard Mission, officially the British Technical and Scientific Mission, was a British d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Percival Rowe
Albert Percival Rowe, CBE (23 March 1898 – 25 May 1976), often known as Jimmy Rowe or A. P. Rowe, was a radar pioneer and university vice-chancellor. A British physicist and senior research administrator, he played a major role in the development of radar before and during World War II. Early years Rowe was born in Launceston, Cornwall, and after attending the Portsmouth Naval Dockyard School, he studied physics at the Royal College of Science, University of London, graduating with a first-class honours in 1921, and postgraduate diploma in air navigation in 1922. On 18 June 1932 at Beckenham, Kent, he married Mary Gordon Mathews, a solicitor. Air defence and radar In the Air Ministry he read up everything he could find on the art of air defence, and became alarmed. Working at that time for Harry Wimperis, he wrote a memo to him that concluded that "we were likely to lose the war if it starts within the next ten years". Wimperis took the report seriously, and in 1934 started th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service. From the middle decades of the 17th century, and through the 18th century, the Royal Navy vied with the Dutch Navy and later with the French Navy for maritime supremacy. From the mid 18th century, it was the world's most powerful navy until the Second World War. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superiority globally. Owing to this historical prominence, it is common, even among non-Britons, to ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avro Anson
The Avro Anson is a British twin-engined, multi-role aircraft built by the aircraft manufacturer Avro. Large numbers of the type served in a variety of roles for the Royal Air Force (RAF), Fleet Air Arm (FAA), Royal Canadian Air Force (RCAF) and numerous other air forces before, during, and after the Second World War. Initially known as the ''Avro 652A'', the Anson was developed during the mid-1930s from the earlier Avro 652 airliner in response to a request for tenders issued by the British Air Ministry for a maritime reconnaissance aircraft. Having suitably impressed the Ministry, a single prototype was ordered, which conducted its maiden flight on 24 March 1935. Following an evaluation in which the Type 652A bettered the competing de Havilland DH.89, it was selected as the winner, leading to Air Ministry Specification 18/35 being written around the type and an initial order for 174 aircraft being ordered in July 1935. The Type 652A was promptly named after British Admira ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Exercise
A military exercise or war game is the employment of military resources in training for military operations, either exploring the effects of warfare or testing strategies without actual combat. This also serves the purpose of ensuring the combat readiness of garrisoned or deployable forces prior to deployment from a home base. While both war games and military exercises aim to simulate real conditions and scenarios for the purpose of preparing and analyzing those scenarios, the distinction between a war game and a military exercise is determined, primarily, by the involvement of actual military forces within the simulation, or lack thereof. Military exercises focus on the simulation of real, full-scale military operations in controlled hostile conditions in attempts to reproduce war time decisions and activities for training purposes or to analyze the outcome of possible war time decisions. War games, however, can be much smaller than full-scale military operations, do not typi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Watson-Watt
Sir Robert Alexander Watson Watt (13 April 1892 – 5 December 1973) was a Scottish pioneer of radio direction finding and radar technology. Watt began his career in radio physics with a job at the Met Office, where he began looking for accurate ways to track thunderstorms using the radio signals given off by lightning. This led to the 1920s development of a system later known as high-frequency direction finding (HFDF or "huff-duff"). Although well publicized at the time, the system's enormous military potential was not developed until the late 1930s. Huff-duff allowed operators to determine the location of an enemy radio in seconds and it became a major part of the network of systems that helped defeat the threat of German U-boats during World War II. It is estimated that huff-duff was used in about a quarter of all attacks on U-boats. In 1935 Watt was asked to comment on reports of a German death ray based on radio. Watt and his assistant Arnold Frederic Wilkins quickly dete ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
