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Vympel R-23
The Vympel R-23 (NATO reporting name AA-7 ''Apex'') is a medium-range air-to-air missile developed by Vympel PTO, Vympel in the Soviet Union for fighter aircraft. An updated version with greater range, the R-24, replaced it in service. It is comparable to the American AIM-7 Sparrow, both in terms of overall performance as well as role. Development Design of a new missile to arm the Mikoyan-Gurevich MiG-23, MiG-23 fighter started in the mid-1960s under the direction of V.A. Pustyakov's design team. Known as the K-23 during its design, the new weapon was intended for use against bomber-sized targets, with "snap-up" capability to attack targets at higher altitude than the launch aircraft. It originally was intended to have a dual-mode seeker using both semi-active radar homing (SARH) and infrared (IR) guidance, but this proved unfeasible, and separate SARH and IR models (''Izdeliye'' (Product) 340 and 360, respectively) were developed instead. Test firings were carried out in 1967 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Union
The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet Union, it dissolved in 1991. During its existence, it was the list of countries and dependencies by area, largest country by area, extending across Time in Russia, eleven time zones and sharing Geography of the Soviet Union#Borders and neighbors, borders with twelve countries, and the List of countries and dependencies by population, third-most populous country. An overall successor to the Russian Empire, it was nominally organized as a federal union of Republics of the Soviet Union, national republics, the largest and most populous of which was the Russian SFSR. In practice, Government of the Soviet Union, its government and Economy of the Soviet Union, economy were Soviet-type economic planning, highly centralized. As a one-party state go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vympel PTO
Vympel NPO is a Russian research and production company (NPO) based near Moscow, mostly known for their air-to-air missiles. Other projects include SAM and ABM defenses. It was started in the Soviet era as an OKB (experimental design bureau). History Vympel started out after World War II as OKB-134, with leading the team. The first product they designed was the K-7 missile. Their first missile built in serial production was the K-13 (R-13) in 1958. Toropov moved to Tushino Aviation Facility in 1961 and was replaced by . Somewhere between 1966 and 1968 the OKB got renamed to Vympel. In 1977, Matus Bisnovat of OKB-4 Molniya died, and all missile related work was passed to Vympel. G. Khokhlov led the team until 1981, when Genadiy A. Sokolovski succeeded him. In 1992, the GosMKB Vympel got started on the basis of the OKB and in 1994 Sokolovski became the director of development at the company. In May 2004, the Tactical Missiles Corporation was formed and Vympel became a part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar Fuse
In military munitions, a fuze (sometimes fuse) is the part of the device that initiates its function. In some applications, such as torpedoes, a fuze may be identified by function as the exploder. The relative complexity of even the earliest fuze designs can be seen in cutaway diagrams. A fuze is a device that detonates a munition's explosive material under specified conditions. In addition, a fuze will have safety and arming mechanisms that protect users from premature or accidental detonation. For example, an artillery fuze's battery is activated by the high acceleration of cannon launch, and the fuze must be spinning rapidly before it will function. "Complete bore safety" can be achieved with mechanical shutters that isolate the detonator from the main charge until the shell is fired. A fuze may contain only the electronic or mechanical elements necessary to signal or actuate the detonator, but some fuzes contain a small amount of primary explosive to initiate the detonation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infrared Homing
Infrared homing is a Missile guidance#Passive homing, passive weapon guidance system which uses the infrared (IR) light emission from a target to track and follow it seamlessly. Missiles which use infrared seeking are often referred to as "heat-seekers" since infrared is radiated strongly by hot bodies. Many objects such as people, vehicle engines and aircraft generate and emit heat and so are especially visible in the infrared wavelengths of light compared to objects in the background. Infrared seekers are passive devices, which, unlike radar, provide no indication that they are tracking a target. That makes them suitable for sneak attacks during visual encounters or over longer ranges when they are used with a forward looking infrared or similar cueing system. Heat-seekers are extremely effective: 90% of all timeline of United States military operations, United States air combat losses between 1984 and 2009 were caused by infrared-homing missiles. They are, however, subject ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquid Nitrogen
Liquid nitrogen (LN2) is nitrogen in a liquid state at cryogenics, low temperature. Liquid nitrogen has a boiling point of about . It is produced industrially by fractional distillation of liquid air. It is a colorless, mobile liquid whose viscosity is about one-tenth that of acetone (i.e. roughly one-thirtieth that of water at room temperature). Liquid nitrogen is widely used as a coolant. Physical properties The diatomic character of the N2 molecule is retained after liquefaction. The weak van der Waals interaction between the N2 molecules results in little interatomic attraction. This is the cause of nitrogen's unusually low boiling point. The temperature of liquid nitrogen can readily be reduced to its freezing point by placing it in a vacuum chamber pumped by a vacuum pump. Liquid nitrogen's efficiency as a coolant is limited by the fact that it boils immediately on contact with a warmer object, enveloping the object in an insulating layer of nitrogen gas bubbles. Thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Countermeasure
An electronic countermeasure (ECM) is an electrical or electronic device designed to trick or deceive radar, sonar, or other detection systems, like infrared (IR) or lasers. It may be used both offensively and defensively to deny targeting information to an enemy. The system may make many separate targets appear to the enemy, or make the real target appear to disappear or move about randomly. It is used effectively to protect aircraft from guided missiles. Most air forces use ECM to protect their aircraft from attack. It has also been deployed by military ships and recently on some advanced tanks to fool laser/IR guided missiles. It is frequently coupled with stealth advances so that the ECM systems have an easier job. Offensive ECM often takes the form of jamming. Self-protecting (defensive) ECM includes using blip enhancement and jamming of missile terminal homers. History The first example of electronic countermeasures being applied in a combat situation took place durin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monopulse Radar
Monopulse radar is a radar system that uses additional encoding of the radio signal to provide accurate directional information. The name refers to its ability to extract range and direction from a single signal pulse. Monopulse radar avoids problems seen in conical scanning radar systems, which can be confused by rapid changes in signal strength. The system also makes jamming more difficult. Most radars designed since the 1960s are monopulse systems. The monopulse method is also used in passive systems, such as electronic support measures and radio astronomy. Monopulse radar systems can be constructed with reflector antennas, lens antennas or array antennas. Historically, monopulse systems have been classified as either phase-comparison monopulse or amplitude monopulse. Modern systems determine the direction from the monopulse ratio, which contain both amplitude and phase information. The monopulse method does not require that the measured signals are pulsed. The altern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1974 In Aviation
This is a list of aviation-related events from 1974. 1974 had been deemed as "the single worst year in airline history" although this has since been surpassed. Events * Japan creates its Aircraft Accident Investigation Commission, responsible for investigation aviation accidents in Japan. * Spring 1974 – Under an international agreement to clear the Suez Canal of naval mines in the wake of the Yom Kippur War, United States Navy RH-53D Sea Stallion minesweeping helicopters of Helicopter Mine Countermeasures Squadron 12 (HM-12) operating from the amphibious assault ships and use Mark 105 hydrofoil minesweeping sleds to sweep 120 square miles of water between Port Said and Suez, Egypt, in Operation Nimbus Star. January * January 1 **Abu Dhabi, Bahrain, Oman, and Qatar sign the Foundation Treaty, which gives each state a 25 percent ownership stake in Gulf Aviation. Gulf Aviation becomes a holding company, and its airline flight operations are transferred to a new airline bra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vympel R-27
The Vympel R-27 (NATO reporting name AA-10 Alamo) is a family of air-to-air missiles developed by the Soviet Union during the late Cold War-era. It remains in service with the Russian Aerospace Forces, air forces of the Commonwealth of Independent States and air forces of many other countries as the standard medium-range air-to-air missile despite the development of the more advanced R-77. The R-27 is manufactured in infrared-homing/IR (R-27T, R-27ET), semi-active radar homing/ SARH (R-27R, R-27ER), and active-radar homing/ARH (R-27EA) versions. R-27 family missiles are produced by both Russian and Ukrainian manufacturers. The R-27 missile is carried by the Mikoyan MiG-29 and Sukhoi Su-27 family fighters. The R-27 missile is also license-produced in China, though the production license was bought from Ukraine instead of Russia. Variants * R-27R: ''AA-10 Alamo-A'', semi-active radar homing. Missile can be used at altitude (launch platform or target). Effective kill range f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1967 In Aviation
This is a list of aviation-related events from 1967. Events * The Canadian Golden Centennaires aerobatic team is formed and performs all year to celebrate the Canadian Centennial year. * Boeing opens its biggest factory (largest building by volume), the Boeing Everett Factory, in Everett, Washington. * Pacific Air Lines launches a controversial marketing campaign devised by advertising executive and comedian Stan Freberg that highlights and spoofs passengers' fear of flying, including a full-page advertisement in the ''New York Times'' on April 28. Matthew E. McCarthy, Pacific's chief executive and biggest shareholder, explains the campaign by saying, "It's basically honest. We spoof the passengers' concern, but at least we admit they have it." Philip H. Dougherty, writing in the Business and Finance section of the May 1 edition of ''The New York Times'', describes the advertisements as "rather shocking". After stockholders raise objection to the unorthodox campa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infrared
Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves. The infrared spectral band begins with the waves that are just longer than those of red light (the longest waves in the visible spectrum), so IR is invisible to the human eye. IR is generally (according to ISO, CIE) understood to include wavelengths from around to . IR is commonly divided between longer-wavelength thermal IR, emitted from terrestrial sources, and shorter-wavelength IR or near-IR, part of the solar spectrum. Longer IR wavelengths (30–100 μm) are sometimes included as part of the terahertz radiation band. Almost all black-body radiation from objects near room temperature is in the IR band. As a form of EMR, IR carries energy and momentum, exerts radiation pressure, and has properties corresponding to both those of a wave and of a particle, the photon. It was long known that fires e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
