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GBU-12
The GBU-12 Paveway II is an American aerial laser-guided bomb, based on the Mk 82 500-pound (227 kg) general-purpose bomb, but with the addition of a nose-mounted laser seeker and fins for guidance. A member of the Paveway series of weapons, Paveway II entered into service c. 1976. It is currently in service with the U.S. Air Force, U.S. Navy, U.S. Marine Corps, and various other air forces. Development and deployment The development of the GBU-12 traces back to the Vietnam War. The U.S. Air Force wanted a greater variety of laser-guided bombs, especially a lighter and more maneuverable one to be able to hit moving targets on the Ho Chi Minh trail. Earlier designs of guided bombs such as the BOLT-117 were quickly superseded by the Paveway series of add-on kits for conventional bombs. GBU-12 bombs (along with the balance of the Paveway series) are produced by defense contractors Lockheed Martin and Raytheon. Raytheon began production after purchasing the product line f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
F-15E
The McDonnell Douglas (now Boeing) F-15E Strike Eagle is an American all-weather multirole strike fighter derived from the McDonnell Douglas F-15 Eagle. The F-15E was designed in the 1980s for long-range, high-speed interdiction without relying on escort or electronic-warfare aircraft. United States Air Force (USAF) F-15E Strike Eagles can be generally distinguished from other US Eagle variants by darker aircraft camouflage, conformal fuel tanks (CFTs) mounted along the engine intake ramps (although CFTs can also be mounted on earlier F-15 variants) and a tandem-seat cockpit. The Strike Eagle has been deployed for military operations in Iraq, Afghanistan, Syria, and Libya, among others. During these operations, the strike fighter has carried out deep strikes against high-value targets and combat air patrols, and provided close air support for coalition troops. It has also been exported to several countries. Development Origins The McDonnell Douglas F-15 Eagle was intr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paveway
Paveway is a series of laser-guided bombs (LGBs). ''Pave'' or PAVE is sometimes used as an acronym for ''precision avionics vectoring equipment''; literally, electronics for controlling the speed and direction of aircraft. Laser guidance is a form of Pave. Pave, paired with other words, is the first name for various laser systems that designate targets for LGBs, for example Pave Penny, Pave Spike, Pave Tack and Pave Knife, and for specialized military aircraft, such as AC-130U Pave Spectre, MH-53 Pave Low, and HH-60 Pave Hawk. Development The Paveway series of laser-guided bombs was developed by Texas Instruments, with the project starting in 1964. The program was conducted on a shoestring budget, but the resultant emphasis on simplicity and economical engineering proved to be a benefit, and a major advantage over other more complex guided weapons. The first test, using a M117 bomb as the warhead, took place in April 1965. Early version featured aerodynamic designs led by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark 82 Bomb
The Mark 82 (Mk 82) is an unguided, low- drag general-purpose bomb, part of the United States Mark 80 series. The explosive filling is usually tritonal, though other compositions have sometimes been used. Development and deployment With a nominal weight of , it is one of the smallest in current service, and one of the most common air-dropped weapons in the world. Although the Mk 82's nominal weight is 500 lb, its actual weight varies depending on its configuration, from . It is a streamlined steel casing containing of Tritonal high explosive. The Mk 82 is offered with a variety of fin kits, fuzes, and retarders for different purposes. The Mk 82 is the warhead for the GBU-12 laser-guided bombs and for the GBU-38 JDAM. Currently only the General Dynamics plant in Garland, Texas and Nitro-Chem in Bydgoszcz, Poland are Department of Defense-certified to manufacture bombs for the US Armed Forces. The Mk 82 is currently undergoing a minor re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guided Munition
A precision-guided munition (PGM, smart weapon, smart munition, smart bomb) is a guided munition intended to precisely hit a specific target, to minimize collateral damage and increase lethality against intended targets. During the First Gulf War guided munitions accounted for only 9% of weapons fired, but accounted for 75% of all successful hits. Despite guided weapons generally being used on more difficult targets, they were still 35 times more likely to destroy their targets per weapon dropped. Because the damage effects of explosive weapons decrease with distance due to an inverse cube law, even modest improvements in accuracy (hence reduction in miss distance) enable a target to be attacked with fewer or smaller bombs. Thus, even if some guided bombs miss, fewer air crews are put at risk and the harm to civilians and the amount of collateral damage may be reduced. The advent of precision-guided munitions resulted in the renaming of older, low-technology, bombs as "ungui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General-purpose Bomb
A general-purpose bomb is an air-dropped bomb intended as a compromise between blast damage, penetration, and fragmentation in explosive effect. They are designed to be effective against enemy troops, vehicles, and buildings. Characteristics General-purpose (GP) bombs use a thick-walled metal casing with explosive filler (typically TNT, Composition B, or Tritonal in NATO or United States service) comprising about 30% to 40% of the bomb's total weight. The British term for a bomb of this type is "medium case" or "medium capacity" (MC). The GP bomb is a common weapon of fighter bomber and attack aircraft because it is useful for a variety of tactical applications and relatively cheap. General-purpose bombs are often identified by their weight (e.g., ). In many cases this is strictly a ''nominal weight'' (the counterpart to the ''caliber'' of a firearm), and the actual weight of each individual weapon may vary depending on its retardation, fusing, carriage, and guidance syst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bang–bang Control
In control theory, a bang–bang controller (2 step or on–off controller), is a feedback controller that switches abruptly between two states. These controllers may be realized in terms of any element that provides hysteresis. They are often used to control a plant that accepts a binary input, for example a furnace that is either completely on or completely off. Most common residential thermostats are bang–bang controllers. The Heaviside step function in its discrete form is an example of a bang–bang control signal. Due to the discontinuous control signal, systems that include bang–bang controllers are variable structure systems, and bang–bang controllers are thus variable structure controllers. Bang–bang solutions in optimal control In optimal control problems, it is sometimes the case that a control is restricted to be between a lower and an upper bound. If the optimal control switches from one extreme to the other (i.e., is strictly never in between the bounds), t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laser-guided Bomb
A laser-guided bomb (LGB) is a guided bomb that uses semi-active laser guidance to strike a designated target with greater accuracy than an unguided bomb. First developed by the United States during the Vietnam War, laser-guided bombs quickly proved their value in precision strikes of difficult point targets. These weapons use on-board electronics to track targets that are designated by laser, typically in the infrared spectrum, and adjust their glide path to accurately strike the target. Since the weapon is tracking a light signature, not the object itself, the target must be illuminated from a separate source, either by ground forces, by a pod on the attacking aircraft, or by a separate support aircraft. Data from the 28,000 laser guided bombs dropped in Vietnam showed that laser-guided bombs achieved direct hits nearly 50% of the time, despite the laser having to be aimed out the side window of the back seat of another aircraft in flight. Unguided bombs had an accuracy rate o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
F/A-18
The McDonnell Douglas F/A-18 Hornet is an all-weather, twin-engine, supersonic, carrier-capable, multirole combat aircraft, designed as both a fighter and attack aircraft (hence the F/A designation). Designed by McDonnell Douglas (now part of Boeing) and Northrop (now part of Northrop Grumman), the F/A-18 was derived from the latter's YF-17 in the 1970s for use by the United States Navy and Marine Corps. The Hornet is also used by the air forces of several other nations, and formerly by the U.S. Navy's Flight Demonstration Squadron, the Blue Angels. The F/A-18 was designed to be a highly versatile aircraft due to its avionics, cockpit displays, and excellent aerodynamic characteristics, with the ability to carry a wide variety of weapons. The aircraft can perform fighter escort, fleet air defense, suppression of enemy air defenses, air interdiction, close air support, and aerial reconnaissance. Its versatility and reliability have proven it to be a valuable carrier asse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US Department Of Defense
The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national security and the United States Armed Forces. The DoD is the largest employer in the world, with over 1.34 million active-duty service members (soldiers, marines, sailors, airmen, and guardians) as of June 2022. The DoD also maintains over 778,000 National Guard and reservists, and over 747,000 civilians bringing the total to over 2.87 million employees. Headquartered at the Pentagon in Arlington, Virginia, just outside Washington, D.C., the DoD's stated mission is to provide "the military forces needed to deter war and ensure our nation's security". The Department of Defense is headed by the secretary of defense, a cabinet-level head who reports directly to the president of the United States. Beneath the Department of Defense are th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circular Error Probable
In the military science of ballistics, circular error probable (CEP) (also circular error probability or circle of equal probability) is a measure of a weapon system's precision. It is defined as the radius of a circle, centered on the mean, whose perimeter is expected to include the landing points of 50% of the rounds; said otherwise, it is the median error radius. That is, if a given munitions design has a CEP of 100 m, when 100 munitions are targeted at the same point, 50 will fall within a circle with a radius of 100 m around their average impact point. (The distance between the target point and the average impact point is referred to as bias.) There are associated concepts, such as the DRMS (distance root mean square), which is the square root of the average squared distance error, and R95, which is the radius of the circle where 95% of the values would fall in. The concept of CEP also plays a role when measuring the accuracy of a position obtained by a navigati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smart Bomb
Smart or SMART may refer to: Arts and entertainment * ''Smart'' (Hey! Say! JUMP album), 2014 * Smart (Hotels.com), former mascot of Hotels.com * ''Smart'' (Sleeper album), 1995 debut album by Sleeper * ''SMart'', a children's television series about art on CBBC Businesses and brands * S-Mart, a Mexican grocery store chain * SMART (advertising agency), an Australian company * SmartCell, a network operator in Nepal * Smart Communications, a cellular service provider in the Philippines * Smart Technologies, a company providing group collaboration tools * Smart Telecom, a network operator in the Republic of Ireland * Smart (cigarette), an Austrian brand * Smart (drink), a brand of fruit-flavored soda produced by The Coca-Cola Company for Mainland China Computing * Smart device, an electronic device connected to other devices or networks wirelessly * Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.), a standard used in computer storage devices * SMART Informat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
