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Kehl-Strasbourg Radio Control Link
The Kehl-Straßburg radio control link was a German MCLOS radio control system of World War II. The system was named for Strasbourg, the French/German city on the Rhine and Kehl, at the time a suburb of Strasbourg. It was used by the Fritz X guided bomb and the Henschel Hs 293 guided missile, and would also be trialled in test of the Henschel Hs 298 MCLOS-guidance air-to-air missile. Description The generic term ''Funkgerät'', the source for the ''FuG'' prefix, translates directly into "radio equipment" in English (funk - radio; gerät - equipment), and also prefixed the designations of other various types of German military electronics, like the ''Lichtenstein'' and ''Neptun'' airborne intercept radar series, and the ''Erstling'' IFF radio gear, among others. The ''Kehl-Straßburg'' system combined two units. The dual-axis, single-joystick-equipped ''Funkgerät (FuG 203) Kehl'' series of radio-control transmitter sets, fitted aboard the launch aircraft, were used to send ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manual Command To Line Of Sight
Manual command to line of sight (MCLOS) is a method for guiding guided missiles. With an MCLOS missile, the operator must track the missile and the target simultaneously and guide the missile to the target. Typically the missile is steered with a joystick, and its path is observed through a periscope-type telescopic sight. The missiles are usually equipped with a magnesium flare in the base that automatically ignites on launch and allows the gunner to visually track the fast-moving missile in a manner similar in concept to tracer ammunition. MCLOS requires considerable training and practice to master, since even a minor disruption in the gunner's concentration would likely cause a miss. These guidance systems have marginal accuracy on tank-sized targets, even with perfect line-of-sight by the gunner, due to erratic flight paths requiring timely manual corrections. As demonstrated by the Israeli Army under fire from Soviet-armed Arab states, responding to the distinctive smoke puff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Destroyer Escort
Destroyer escort (DE) was the United States Navy mid-20th-century classification for a warship designed with the endurance necessary to escort mid-ocean convoys of merchant marine ships. Development of the destroyer escort was promoted by the British need in World War II for anti-submarine ships that could operate in open oceans at speeds of up to 20 knots. These "British Destroyer Escort"s were designed by the US for mass-production under Lend Lease as a less expensive alternative to fleet destroyers. The Royal Navy and Commonwealth forces identified such warships as frigates, and that classification was widely accepted when the United States redesignated destroyer escorts as frigates (FF) in 1975. From circa 1954 until 1975 new-build US Navy ships designated as destroyer escorts (DE) were called ocean escorts. Similar types of warships in other navies of the time included the 46 diesel-engined ''Kaibōkan'' of the Imperial Japanese Navy, 10 ''Kriegsmarine'' F-class escort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Dragoon
Operation Dragoon (initially Operation Anvil) was the code name for the landing operation of the Allied invasion of Provence ( Southern France) on 15August 1944. Despite initially designed to be executed in conjunction with Operation Overlord, the Allied landing in Normandy, the lack of available resources led to a cancellation of the second landing. By July 1944 the landing was reconsidered, as the clogged-up ports in Normandy did not have the capacity to adequately supply the Allied forces. Concurrently, the French High Command pushed for a revival of the operation that would include large numbers of French troops. As a result, the operation was finally approved in July to be executed in August. The invasion sought to secure the vital ports on the French Mediterranean coast and increase pressure on the German forces by opening another front. After preliminary commando operations, the US VI Corps landed on the beaches of the Côte d'Azur under the shield of a large naval tas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invasion Of Normandy
Operation Overlord was the codename for the Battle of Normandy, the Allied operation that launched the successful invasion of German-occupied Western Europe during World War II. The operation was launched on 6 June 1944 (D-Day) with the Normandy landings. A 1,200-plane airborne assault preceded an amphibious assault involving more than 5,000 vessels. Nearly 160,000 troops crossed the English Channel on 6 June, and more than two million Allied troops were in France by the end of August. The decision to undertake a cross-channel invasion in 1944 was taken at the Trident Conference in Washington in May 1943. General Dwight D. Eisenhower was appointed commander of Supreme Headquarters Allied Expeditionary Force, and General Bernard Montgomery was named commander of the 21st Army Group, which comprised all the land forces involved in the invasion. The coast of Normandy of northwestern France was chosen as the site of the invasion, with the Americans assigned to land at sectors c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corsica
Corsica ( , Upper , Southern ; it, Corsica; ; french: Corse ; lij, Còrsega; sc, Còssiga) is an island in the Mediterranean Sea and one of the 18 regions of France. It is the fourth-largest island in the Mediterranean and lies southeast of the French mainland, west of the Italian Peninsula and immediately north of the Italian island of Sardinia, which is the land mass nearest to it. A single chain of mountains makes up two-thirds of the island. , it had a population of 349,465. The island is a territorial collectivity of France. The regional capital is Ajaccio. Although the region is divided into two administrative departments, Haute-Corse and Corse-du-Sud, their respective regional and departmental territorial collectivities were merged on 1 January 2018 to form the single territorial collectivity of Corsica. As such, Corsica enjoys a greater degree of autonomy than other French regional collectivities; for example, the Corsican Assembly is permitted to exercise li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinkel He 177
The Heinkel He 177 ''Greif'' (Griffin) was a long-range heavy bomber flown by the ''Luftwaffe'' during World War II. The introduction of the He 177 to combat operations was significantly delayed, by both problems with the development of its engines, and frequent changes to its intended role. Nevertheless, it was the only long-range, heavy bomber to become operational with the ''Luftwaffe'' during the war. The He 177 had a payload/range capability similar to that of four-engined heavy bombers used by the Allies in the European theatre. Work on the design began in response to a 1936 requirement, known as Bomber A, issued by the RLM for a purely strategic bomber. Thus the He 177 was intended originally to be capable of a sustained bombing campaign against Soviet manufacturing capacity, deep inside Russia. In contrast to its heavy payload and very wide, planform, the specifications called for the design to have only two very powerful engines. To deliver the power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intermediate Frequency
In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception. The intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a process called heterodyning, resulting in a signal at the difference or beat frequency. Intermediate frequencies are used in superheterodyne radio receivers, in which an incoming signal is shifted to an IF for amplification before final detection is done. Conversion to an intermediate frequency is useful for several reasons. When several stages of filters are used, they can all be set to a fixed frequency, which makes them easier to build and to tune. Lower frequency transistors generally have higher gains so fewer stages are required. It's easier to make sharply selective filters at lower fixed frequencies. There may be several such stages of intermediate frequency in a superheterodyne receiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Lansdale (DD-426)
The second USS ''Lansdale'' (DD-426) was a in the United States Navy during World War II. She was named for Philip Lansdale. ''Lansdale'' was laid down on 19 December 1938 by Boston Navy Yard; launched on 30 October 1939; sponsored by Mrs. Ethel S. Lansdale, widow of the ship's namesake; and commissioned on 17 September 1940 at Boston, Massachusetts. 1941 After shakedown in the Caribbean, ''Lansdale'' departed Boston on 18 January 1941 for Neutrality patrol duty in the Caribbean. She cruised off Cuba, the Virgin Islands, Martinique, and the British West Indies before returning to Boston on 6 March. After escort training along the Atlantic coast, she screened transports from Charleston, South Carolina, to NS Argentia, Newfoundland, in late June, then departed Argentia on 30 June on a neutrality-patrol run to Iceland. During the remainder of the year, she made three escort runs between Newfoundland and Iceland. ''En route'' to Hvalfjörður, Iceland, when the United States en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Madison (DD-425)
USS ''Madison'' (DD-425) was a ''Benson''-class destroyer in the United States Navy during World War II. She is the third Navy ship of that name, and the first named for Commander James J. Madison (1888–1922), who was awarded the Medal of Honor during World War I. ''Madison'' was laid down on 19 September 1938 by the Boston Navy Yard; launched on 20 October 1939; sponsored by Mrs. Ethel Madison Meyn, widow of Commander Madison; and commissioned on 6 August 1940. Pre World War II service Prior to the entry of the United States into World War II, the destroyer saw over a year's service opposing the spread of Axis power. In addition to Neutrality Patrol in the Caribbean and North Atlantic convoy duty, she was escort on two diplomatic voyages in January 1941. She escorted as the cruiser carried Admiral William D. Leahy to Portugal en route to France to become Ambassador to the Vichy France Government. In August, she escorted , carrying President Franklin D. Roosevelt to Argen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Woolsey (DD-437)
USS ''Woolsey'' (DD-437), a , was the second ship to be named ''Woolsey'' in the United States Navy. It is the first to be named for both Commodore Melancthon Brooks Woolsey and his father Commodore Melancthon Taylor Woolsey. ''Woolsey'' was laid down on 9 October 1939 at Bath, Maine by the Bath Iron Works and launched on 12 February 1941, sponsored by Mrs. Irving Spencer. The ship was commissioned on 7 May 1941. Service history Following a shakedown cruise in the Caribbean Sea, ''Woolsey'' joined the Atlantic Fleet at the beginning of the second week in September in 1941. Initially, she served on the Neutrality Patrol, established by President Franklin D. Roosevelt to keep the war in Europe from spreading to the western hemisphere. For a time, she also served as a unit in the screen of the newly commissioned battleship . As the year 1941 waned and the United States approached closer and closer to active belligerency, ''Woolsey'' began escorting convoys between the United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Shingle
The Battle of Anzio was a battle of the Italian Campaign of World War II that took place from January 22, 1944 (beginning with the Allied amphibious landing known as Operation Shingle) to June 5, 1944 (ending with the capture of Rome). The operation was opposed by German forces in the area of Anzio and Nettuno. The operation was initially commanded by Major General John P. Lucas, of the U.S. Army, commanding U.S. VI Corps with the intent to outflank German forces at the Winter Line and enable an attack on Rome. The success of an amphibious landing at that location, in a basin consisting substantially of reclaimed marshland and surrounded by mountains, depended on the element of surprise and the swiftness with which the invaders could build up strength and move inland relative to the reaction time and strength of the defenders. Any delay could result in the occupation of the mountains by the defenders and the consequent entrapment of the invaders. Lieutenant General Mark ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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