Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Bombsight> ?p ?o }
- Bombsight abstract "A bombsight is a device used by aircraft to accurately drop bombs. Bombsights are a feature of most aircraft from World War I on, first found on the purpose-designed bomber aircraft, and then moving to fighter-bombers and modern tactical aircraft as these aircraft took up the brunt of the bombing role.A bombsight has to estimate the path the bomb will take after release from the aircraft. The two primary forces during its fall are gravity and air drag, which make the path of the bomb through the air roughly parabolic. There are additional factors such as changes in air density and wind that may be considered, but these are only a concern for bombs that spend a significant portion of a minute falling through the air. These effects can be minimized by reducing the fall time through low-level bombing or by increasing the speed of the bombs. These effects are combined in the dive bomber. However, low-level bombing also increases the danger to the bomber from ground-based defences, and accurate bombing from higher altitudes has always been desired. This has led to a series of increasingly sophisticated bombsight designs dedicated to high-altitude level bombing.Since their first application prior to WWI, bombsights have gone though several major revisions. The earliest systems were iron sights that were pre-set to an estimated fall angle. In some cases these consisted of nothing more than a series of nails hammered into a convenient spar, lines drawn on the aircraft, or visual alignments of certain parts of the structure. These were replaced by the earliest custom-designed systems, normally iron sights that could be set based on the aircraft's airspeed and altitude. These early systems were replaced by the vector bombsights, which added the ability to measure and adjust for winds. Vector bombsights were useful for altitudes up to about 3,000 m and speeds up to about 300 km/h. Starting in the 1930s, mechanical computers with the performance needed to "solve" the equations of motion were incorporated into the new tachometric bombsights, the most famous being the Norden. Later in World War II, tachometric bombsights were often combined with radar systems to allow accurate bombing through clouds or at night. When post-war studies demonstrated that bomb accuracy was roughly equal when optically or radar guided, optical bombsights were generally removed and the role passed to dedicated radar bombsights. Finally, especially from the 1960s on, fully computerized bombsights were introduced, which combined the bombing with long-range navigation and mapping.Modern aircraft do not have a bombsight, per se, instead using highly computerized systems that combine bombing, gunnery, missile fire and navigation into a single head-up display. These systems have the performance to calculate the bomb trajectory in real time as the aircraft manoeuvres, and add the ability to adjust for weather, relative altitude, relative speeds for moving targets, and climb or dive angle. This makes them useful both for level bombing, as in earlier generations, and tactical missions formerly bombed by eye.".
- Bombsight thumbnail Bombsight.jpg?width=300.
- Bombsight wikiPageExternalLink books?id=G7JOZAzv_Z4C&pg=PA27.
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- Bombsight wikiPageExternalLink LSearle_bombsight.pdf.
- Bombsight wikiPageExternalLink Volume_I.htm.
- Bombsight wikiPageExternalLink CHAPTER-23-D.html.
- Bombsight wikiPageExternalLink Terminal-Ballistic-Data-Vol-3-Bombs-Artillery-Mortar-Fire-Rockets.
- Bombsight wikiPageExternalLink Terminal-Ballistic-Data-I.
- Bombsight wikiPageID "5138454".
- Bombsight wikiPageLength "45187".
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- Bombsight wikiPageRevisionID "682677211".
- Bombsight wikiPageWikiLink APA-47.
- Bombsight wikiPageWikiLink APA-59.
- Bombsight wikiPageWikiLink APQ-13.
- Bombsight wikiPageWikiLink APQ-24.
- Bombsight wikiPageWikiLink APQ-7.
- Bombsight wikiPageWikiLink Air_density.
- Bombsight wikiPageWikiLink Air_drag.
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- Bombsight wikiPageWikiLink Classical_mechanics.
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- Bombsight wikiPageWikiLink Density_of_air.
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- Bombsight wikiPageWikiLink Drag_(physics).
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- Bombsight wikiPageWikiLink Dutch_roll.
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- Bombsight wikiPageWikiLink Federal_Aviation_Administration.
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- Bombsight wikiPageWikiLink File:Drift_Sight_Mk._I_on_DH4.jpeg.
- Bombsight wikiPageWikiLink First_World_War.
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- Bombsight wikiPageWikiLink H2S_(radar).
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- Bombsight wikiPageWikiLink Harry_Wimperis.
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- Bombsight wikiPageWikiLink Indicated_airspeed.
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- Bombsight wikiPageWikiLink Lotfernrohr_7.
- Bombsight wikiPageWikiLink Luftwaffe.
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- Bombsight wikiPageWikiLink Mechanical_computer.
- Bombsight wikiPageWikiLink Newtonian_mechanics.
- Bombsight wikiPageWikiLink No._617_Squadron_RAF.
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- Bombsight wikiPageWikiLink North_American_Aviation_XB-70_Valkyrie.
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- Bombsight wikiPageWikiLink Nuclear_weapon.
- Bombsight wikiPageWikiLink Oboe_(navigation).
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- Bombsight wikiPageWikiLink Prism.
- Bombsight wikiPageWikiLink Prism_(optics).
- Bombsight wikiPageWikiLink RAF_Bomber_Command.
- Bombsight wikiPageWikiLink Radar.