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Kammhuber Line
The Kammhuber Line was the Allied name given to the German night air defense system established in July 1940 by Colonel Josef Kammhuber. It consisted of a series of control sectors equipped with radars and searchlights and an associated night fighter. Each sector would direct the night fighter into visual range with target bombers. The Line was very effective against early Bomber Command tactics. However, the German method was analyzed by the RAF and a counter measure developed. On the night of 30/31 May 1942 in its 1,000 plane raid against Cologne, Bomber Command introduced the use of the bomber stream. The concentration of bombers through a few of the boxes resulted in the defenses being overwhelmed. In response, the Germans converted their ground radar into a radar network, which would follow the path of the British bombers, while a controller directed the night fighters into the stream. Measure and counter measure continued until October 1944, when German defenses were no lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seeburg Plotting Table
{{unreferenced, date=January 2022 The Seeburg plotting table (German: ''Seeburg-Tisch'') was a mechanical plotting table used by Nazi Germany in their operation rooms to track aircraft and coordinate operations during World War II. Attached to the plotting table was a Freya radar and two Würzburg-Riese radars. Freya radars would pick up and track the bombing raids and an attached Würzburg radar would then select an individual bomber and track it. The other Würzburg would track the night fighter that was sent out to find and attack the bombers. This plotting was done on a large, translucent glass plate. The radar position of both enemy bombers and the friendly night fighters were displayed on the table as moving spots of light. The enemy was displayed with a red spot and a blue spot represented the night fighter. The table had a grid that corresponded to the Kammhuber Line system (or Himmelbett as it was known in Germany) over the sector that was covered by its radar. The grid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamburg
(male), (female) en, Hamburger(s), Hamburgian(s) , timezone1 = Central (CET) , utc_offset1 = +1 , timezone1_DST = Central (CEST) , utc_offset1_DST = +2 , postal_code_type = Postal code(s) , postal_code = 20001–21149, 22001–22769 , area_code_type = Area code(s) , area_code = 040 , registration_plate = , blank_name_sec1 = GRP (nominal) , blank_info_sec1 = €123 billion (2019) , blank1_name_sec1 = GRP per capita , blank1_info_sec1 = €67,000 (2019) , blank1_name_sec2 = HDI (2018) , blank1_info_sec2 = 0.976 · 1st of 16 , iso_code = DE-HH , blank_name_sec2 = NUTS Region , blank_info_sec2 = DE6 , website = , footnotes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bombing Of Hamburg In World War II
The Allied bombing of Hamburg during World War II included numerous attacks on civilians and civic infrastructure. As a large city and industrial centre, Hamburg's shipyards, U-boat pens, and the Hamburg-Harburg area oil refineries were attacked throughout the war. As part of a sustained campaign of strategic bombing during World War II, the attack during the last week of July 1943, code named Operation Gomorrah, created one of the largest firestorms raised by the Royal Air Force and United States Army Air Forces in World War II, killing an estimated 37,000 civilians and wounding 180,000 more in Hamburg, and virtually destroying most of the city. Hamburg was selected as a target because it was considered particularly susceptible to attack with incendiaries, which, from the experience of the Blitz, were felt to inflict more damage than just high explosive bombs. Hamburg also contained a high number of targets supporting the German war effort and was relatively easy for navigator ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Window (radar Countermeasure)
Chaff, originally called Window by the British and ''Düppel'' by the Second World War era German Luftwaffe (from the Berlin suburb where it was first developed), is a radar countermeasure in which aircraft or other targets spread a cloud of small, thin pieces of aluminium, metallized glass fibre or plastic, which either appears as a cluster of primary targets on radar screens or swamps the screen with multiple returns, in order to confuse and distract. Modern armed forces use chaff (in naval applications, for instance, using short-range SRBOC rockets) to distract radar-guided missiles from their targets. Most military aircraft and warships have chaff dispensing systems for self-defense. An intercontinental ballistic missile may release in its midcourse phase several independent warheads as well as penetration aids such as decoy balloons and chaff. Modern radar systems can distinguish chaff from target objects by measuring the Doppler shift; chaff quickly loses speed compared to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruhr Valley
The Ruhr ( ; german: Ruhrgebiet , also ''Ruhrpott'' ), also referred to as the Ruhr area, sometimes Ruhr district, Ruhr region, or Ruhr valley, is a polycentric urban area in North Rhine-Westphalia, Germany. With a population density of 2,800/km2 and a population of over 5 million (2017), it is the largest urban area An urban area, built-up area or urban agglomeration is a human settlement with a high population density and infrastructure of built environment. Urban areas are created through urbanization and are categorized by urban morphology as cities, t ... in Germany. It consists of several large cities bordered by the rivers Ruhr (river), Ruhr to the south, Rhine to the west, and Lippe (river), Lippe to the north. In the southwest it borders the Bergisches Land. It is considered part of the larger Rhine-Ruhr metropolitan regions in Germany, metropolitan region of more than 10 million people, which is the third largest in Europe, behind only London and Paris. The Ruhr c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Window - Lancaster Dropping Window
A window is an opening in a wall, door, roof, or vehicle that allows the exchange of light and may also allow the passage of sound and sometimes air. Modern windows are usually glazed or covered in some other transparent or translucent material, a sash set in a frame in the opening; the sash and frame are also referred to as a window. Many glazed windows may be opened, to allow ventilation, or closed, to exclude inclement weather. Windows may have a latch or similar mechanism to lock the window shut or to hold it open by various amounts. In addition to this, many modern day windows may have a window screen or mesh, often made of aluminum or fibreglass, to keep bugs out when the window is opened. Types include the eyebrow window, fixed windows, hexagonal windows, single-hung, and double-hung sash windows, horizontal sliding sash windows, casement windows, awning windows, hopper windows, tilt, and slide windows (often door-sized), tilt and turn windows, transom windows, sidel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erhard Milch
Erhard Milch (30 March 1892 – 25 January 1972) was a German general field marshal (''Generalfeldmarschall'') of Jewish heritage who oversaw the development of the German air force (''Luftwaffe'') as part of the re-armament of Nazi Germany following World War I. He was State Secretary in the Reich Ministry of Aviation and Inspector General of the Air force. During most of World War II, he was in charge of all aircraft production and supply. He was convicted of war crimes and crimes against humanity during the Milch Trial, which was held before a U.S. military court in 1947, and sentenced to life imprisonment. However, Milch's sentence was commuted to 15 years in 1951. He was paroled in 1954, and died in 1972. Descendance and Jewish heritage Milch was born in Wilhelmshaven, the son of Anton Milch, a Jewish pharmacist who served in the Imperial German Navy, and Clara, née Vetter. The Gestapo would later investigate Milch due to his Jewish heritage. Under the Nuremberg Laws, Mil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bombing Of Cologne In World War II
The German city of Cologne was bombed in 262 separate air raidsStadtlandschaften versus Hochstadt at www.koelnarchitektur.de "Internet portal for the architecture of Cologne". (In German). by the during , all by the (RAF). A total of 34,711 long tons of bombs were dropped on the city by the RAF. 20,000 people died during the war in Cologne due to aerial bombardments. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gee (navigation)
Gee, sometimes written GEE, was a radio navigation system used by the Royal Air Force during World War II. It measured the time delay between two radio signals to produce a fix, with accuracy on the order of a few hundred metres at ranges up to about . It was the first hyperbolic navigation system to be used operationally, entering service with RAF Bomber Command in 1942. Gee was devised by Robert Dippy as a short-range blind landing system to improve safety during night operations. During development by the Telecommunications Research Establishment (TRE) at Swanage, the range was found to be far better than expected. It then developed into a long-range, general navigation system. For large, fixed targets, such as the cities that were attacked at night, Gee offered enough accuracy to be used as an aiming reference without the need to use a bombsight or other external references. Jamming reduced its usefulness as a bombing aid, but it remained in use as a navigational aid in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zahme Sau
(( Lit. tame :wikt:sow; generally known in English as "Tame Boar"John O’Connell (2007) The Effectiveness of Airpower in the 20th Century Pt p.53) was a night fighter interception tactic conceived by Viktor von Loßberg and introduced by the German ''Luftwaffe'' in 1943. As a raid approached, the fighters were scrambled and collected to orbit one of several radio beacons throughout Germany, ready to be directed en masse into the bomber stream by running commentaries from the . Once in the stream, fighters made radar contact with bombers, and attacked them for as long as they had fuel and ammunition. See also * (Wild Boar) * List of World War II electronic warfare equipment: Tactics * 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 i ... References {{reflist Ext ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reginald Victor Jones
Reginald Victor Jones , FRSE, LLD (29 September 1911 – 17 December 1997) was a British physicist and scientific military intelligence expert who played an important role in the defence of Britain in by solving scientific and technical problems, and by the extensive use of deception throughout the war to confuse the Germans. Early life Reginald Jones was born in Herne Hill, south London, on 29 September 1911. He was educated at Alleyn's School, Dulwich, and Wadham College, Oxford, where he studied Natural Sciences. In 1932 he graduated with First Class honours in physics and then, working in the Clarendon Laboratory, completed his DPhil in 1934. Subsequently, he took up a Skynner Senior Studentship in Astronomy at Balliol College, Oxford. Assistant Director of Intelligence (Science) In 1936 Jones took up the post at the Royal Aircraft Establishment, Farnborough, a part of the Air Ministry. Here he worked on the problems associated with defending Britain from an air attac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
