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AH-64A
The Boeing AH-64 Apache () is an American twin-turboshaft attack helicopter with a tailwheel-type landing gear arrangement and a tandem cockpit for a crew of two. It features a nose-mounted sensor suite for target acquisition and night vision systems. It is armed with a M230 chain gun carried between the main landing gear, under the aircraft's forward fuselage, and four hardpoints mounted on stub-wing pylons for carrying armament and stores, typically a mixture of AGM-114 Hellfire missiles and Hydra 70 rocket pods. The AH-64 has significant systems redundancy to improve combat survivability. The Apache began as the ''Model 77'' developed by Hughes Helicopters for the United States Army's Advanced Attack Helicopter program to replace the AH-1 Cobra. The prototype YAH-64 was first flown on 30 September 1975. The U.S. Army selected the YAH-64 over the Bell YAH-63 in 1976, and later approved full production in 1982. After purchasing Hughes Helicopters in 1984, McDonnell Do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advanced Attack Helicopter
The Advanced Attack Helicopter (AAH) was a United States Army program to develop an advanced ground attack helicopter beginning in 1972. The Advanced Attack Helicopter program followed cancellation of the Lockheed AH-56 Cheyenne. After evaluating industry proposals, the AAH competition was reduced to offerings from Bell Helicopter, Bell and Hughes Helicopters, Hughes. Following a flight test evaluation of prototypes, Hughes' Boeing AH-64 Apache, YAH-64 was selected in December 1976. Background During the mid-1960s, the United States Army initiated the Advanced Aerial Fire Support System (AAFSS) program, which led to the development of the Lockheed AH-56 Cheyenne for use in the anti-tank gunship role. The US Army pursued the Bell AH-1 Cobra, AH-1G HueyCobra as an "interim type" for the "jungle fighting" role. However, the Army's broader concern was the task of protecting Western Europe from the legions of Warsaw Pact armor to the east. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell AH-1 Cobra
The Bell AH-1 Cobra is a single-engined attack helicopter developed and manufactured by the American rotorcraft manufacturer Bell Helicopter. A member of the prolific Huey family, the AH-1 is also referred to as the HueyCobra or Snake. The AH-1 was rapidly developed as an interim gunship in response to the United States Army's needs in the Vietnam War. It used the same engine, transmission and rotor system of the Bell UH-1 Iroquois, which had already proven itself to be a capable platform during the conflict, but paired it with a redesigned narrow fuselage among other features. The original AH-1, being a dedicated attack helicopter, came equipped with stub wings for various weapons, a chin-mounted gun turret, and an armored tandem cockpit, from which its was operated by a pilot and gunner. Its design was shaped to fulfil a need for a dedicated armed escort for transport helicopter, giving the latter greater survivability in contested environments. On 7 September 1965, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AGM-114 Hellfire
The AGM-114 Hellfire is an air-to-ground missile (AGM) first developed for anti-armor use, later developed for precision drone strikes against other target types, especially high-value targets. It was originally developed under the name '' Heliborne laser, fire-and-forget missile'', which led to the colloquial name "Hellfire" ultimately becoming the missile's formal name. It has a multi-mission, multi-target precision-strike ability and can be launched from multiple air, sea, and ground platforms, including the Predator drone. The Hellfire missile is the primary class air-to-ground precision weapon for the armed forces of the United States and many other nations. It has also been fielded on surface platforms in the surface-to-surface and surface-to-air roles. Description Most variants are laser-guided, with one variant, the AGM-114L "Longbow Hellfire", being radar-guided. Laser guidance can be provided either from the launcher, such as the nose-mounted opto-electronics of the A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greece
Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to the northeast. The Aegean Sea lies to the east of the Geography of Greece, mainland, the Ionian Sea to the west, and the Sea of Crete and the Mediterranean Sea to the south. Greece has the longest coastline on the Mediterranean Basin, featuring List of islands of Greece, thousands of islands. The country consists of nine Geographic regions of Greece, traditional geographic regions, and has a population of approximately 10.4 million. Athens is the nation's capital and List of cities and towns in Greece, largest city, followed by Thessaloniki and Patras. Greece is considered the cradle of Western culture, Western civilization, being the birthplace of Athenian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Israeli Air Force
The Israeli Air Force (IAF; he, זְרוֹעַ הָאֲוִיר וְהֶחָלָל, Zroa HaAvir VeHahalal, tl, "Air and Space Arm", commonly known as , ''Kheil HaAvir'', "Air Corps") operates as the aerial warfare branch of the Israel Defense Forces. It was founded on May 28, 1948, shortly after the Israeli Declaration of Independence. , Aluf Tomer Bar has been serving as the Air Force commander. The Israeli Air Force was established using commandeered or donated civilian aircraft and obsolete and surplus World War II combat aircraft. Eventually, more aircraft were procured, including Boeing B-17s, Bristol Beaufighters, de Havilland Mosquitoes and P-51D Mustangs. The Israeli Air Force played an important part in Operation Kadesh, Israel's part in the 1956 Suez Crisis, dropping paratroopers at the Mitla Pass. On June 5, 1967, the first day of the Six-Day War, the Israeli Air Force performed Operation Focus, debilitating the opposing Arab air forces and attaining air suprema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hughes Helicopters
Hughes Helicopters was a major manufacturer of military and civil helicopters from the 1950s to the 1980s. The company began in 1947, as a unit of Hughes Aircraft, then was part of the Hughes Tool Company after 1955. It became the Hughes Helicopter Division, Summa Corporation in 1972, and was reformed as Hughes Helicopters, Inc. in 1981. However, throughout its history, the company was informally known as "Hughes Helicopters". It was sold to McDonnell Douglas in 1984 and made a subsidiary under the name ''McDonnell Douglas Helicopter Systems''. See MD Helicopters for history of the company after this acquisition. In 1997 McDonnell Douglas merged with Boeing with Boeing as the surviving company. History In 1947, Howard Hughes redirected the Hughes Aircraft Company's efforts from airplanes to helicopters. The effort began in earnest in 1948, when helicopter manufacturer Kellett Autogiro Corporation sold their latest design to Hughes for production. The XH-17 "Sky Crane" firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attack Helicopter
An attack helicopter is an armed helicopter with the primary role of an attack aircraft, with the offensive capability of engaging ground targets such as enemy infantry, military vehicles and fortifications. Due to their heavy armament they are sometimes called helicopter gunships. Attack helicopters can use weapons including autocannons, machine guns, rockets, and anti-tank missiles such as the AGM-114 Hellfire. Some attack helicopters are also capable of carrying air-to-air missiles, though mostly for purposes of self-defense against other helicopters and low-flying light combat aircraft. A modern attack helicopter has two primary roles: first, to provide direct and accurate close air support for ground troops; and second, the anti-tank role to destroy grouped enemy armor. Attack helicopters are also used as protective escort for transport helicopters, or to supplement lighter helicopters in the armed reconnaissance roles. In combat, an attack helicopter is proj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydra 70
The Hydra 70 rocket is a diameter fin-stabilized unguided rocket used primarily in the air-to-ground role. It can be equipped with a variety of warheads, and in more recent versions, guidance systems for point attacks. The Hydra is widely used by US and allied forces, competing with the Canadian CRV-7, with which it is physically interchangeable. Overview The Hydra 70 is derived from the diameter Mk 4/Mk 40 Folding-Fin Aerial Rocket developed by the United States Navy for use as a free-flight aerial rocket in the late 1940s. The Mk 40 was used during the Korean and Vietnam wars to provide close air support to ground forces from about 20 different firing platforms, both fixed-wing and armed helicopters. The main change made to produce the Hydra was the Mk. 66 motor which uses a new propellant that offers considerably more thrust, (Mod 2/3) (Mod 4). The fins of the Mk 40 flipped forward from the rear when the rocket left the launching tube, but in the Hydra they are curved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attack Helicopter
An attack helicopter is an armed helicopter with the primary role of an attack aircraft, with the offensive capability of engaging ground targets such as enemy infantry, military vehicles and fortifications. Due to their heavy armament they are sometimes called helicopter gunships. Attack helicopters can use weapons including autocannons, machine guns, rockets, and anti-tank missiles such as the AGM-114 Hellfire. Some attack helicopters are also capable of carrying air-to-air missiles, though mostly for purposes of self-defense against other helicopters and low-flying light combat aircraft. A modern attack helicopter has two primary roles: first, to provide direct and accurate close air support for ground troops; and second, the anti-tank role to destroy grouped enemy armor. Attack helicopters are also used as protective escort for transport helicopters, or to supplement lighter helicopters in the armed reconnaissance roles. In combat, an attack helicopter is proj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M230 Chain Gun
The M230 Cannon is a 30 mm (30×113 mm), single-barrel electrically-driven autocannon, using external electrical power (as opposed to recoil or expanding gas generated by the firing cartridge) to cycle the weapon between shots. It was designed and manufactured originally by Hughes Helicopters in Culver City, California. The company was acquired by McDonnell Douglas Helicopters in 1985, which merged into Boeing Corporation in 1997. In 2002, it was sold again to Alliant Techsystems, which merged with Orbital Sciences Corporation in 2015 to form Orbital ATK and was, in turn, bought out by Northrop Grumman in 2018. , it is produced by Northrop Grumman Innovation Systems. Development In 1972, Hughes Helicopters began a company-funded research effort to design a single machine gun to fire the U.S. Army's M50 round.Richardson & Peacock, 1992, pp. 38–40. By April 1973, the program had fired test rounds in more powerful WECOM linked ammunition, from a prototype (A model). In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egyptian Air Force
The Egyptian Air Force (EAF) ( ar, القوات الجوية المصرية, El Qūwāt El Gawīyä El Maṣrīya), is the aviation branch of the Egyptian Armed Forces that is responsible for all airborne defence missions and operates all military aircraft, including those used in support of the Egyptian Army, Egyptian Navy and the Egyptian Air Defense Forces. The latter was created as a separate command in the 1970s and it coordinates with the Air Force to integrate air and ground-based air defense operations. The EAF is headed by an air marshal (lieutenant general equivalent). Currently, the commander of the Egyptian Air Force is Air Marshal Mohamed Abbas Helmy. The force's motto is 'Higher and higher for the sake of glory' ( ar, إلى العلا في سبيل المجد, '). It was known as the Royal Egyptian Air Force until 18 June 1953 following the declaration of the Republic of Egypt by Muhammad Naguib. The Egyptian Army Air Service was formed in 1932, and became an i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redundancy (engineering)
In engineering, redundancy is the intentional duplication of critical components or functions of a system with the goal of increasing reliability of the system, usually in the form of a backup or fail-safe, or to improve actual system performance, such as in the case of GNSS receivers, or multi-threaded computer processing. In many safety-critical systems, such as fly-by-wire and hydraulic systems in aircraft, some parts of the control system may be triplicated, which is formally termed triple modular redundancy (TMR). An error in one component may then be out-voted by the other two. In a triply redundant system, the system has three sub components, all three of which must fail before the system fails. Since each one rarely fails, and the sub components are expected to fail independently, the probability of all three failing is calculated to be extraordinarily small; it is often outweighed by other risk factors, such as human error. Redundancy may also be known by the terms "m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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