|
R-25 Vulkan
The R-25 Vulkan ( sr, Вулкан) was a surface-to-air missile (SAM) designed by Serbian engineer Obrad Vučurović and built in the Socialist Federal Republic of Yugoslavia (SFRY) in the late 1950s, early 1960s. Development The mid-1950s saw the emergence of viable SAMs for the purpose of air defence. Due to their inability to import foreign SAM systems, in 1958 Yugoslavia initiated a program to develop an indigenous missile at the Belgrade Military Technical Institute. Designated the R-25 Vulkan (Volcano), this completely original Yugoslavian design brought together a team of experts led by engineer Obrad Vučurović to design the missile, with the prototypes being made in the SOKO aircraft factory in Mostar. Two versions of the missile were developed: one that had a booster-rocket engine with seven rockets and a second one with four rockets. Although, initial prototypes used a liquid fuel rocket engine developed for a rocket-powered torpedo, later operational production mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museum Of Aviation (Belgrade)
The Aeronautical Museum Belgrade, formerly known as the Yugoslav Aeronautical Museum, is a museum located in Surčin, Belgrade, the capital of Serbia. Founded in 1957, the museum is located adjacent to Belgrade Nikola Tesla Airport. The current facility, designed by architect Ivan Štraus, was opened to the public on 21 May 1989. History In 1975 Jat Airways, JAT, the national flag carrier, donated of land for the museum and the museum later purchased further . Construction of the present building of the museum began in the mid-1970s. The construction work dragged on, so it was only in late 1988 that the setting of the first permanent exhibition began. The museum's new location was ceremonially opened on 21 May 1989. The museum owns over 200 aircraft previously operated by the Yugoslav Air Force (both Royal Yugoslav Air Force, royal and Yugoslav Air Force, communist), Serbian Air Force, and others, as well as aircraft previously flown by several civil airliners and private flyin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rocket Launcher
A rocket launcher is a weapon that launches an unguided, rocket-propelled projectile. History The earliest rocket launchers documented in imperial China consisted of arrows modified by the attachment of a rocket motor to the shaft a few inches behind the arrowhead. The rocket was propelled by the burning of the black powder in the motor; these should not be confused with early fire arrows, which were conventional arrows carrying small tubes of black powder as an incendiary that ignited only after the arrow hit its target. The rocket launchers were constructed of wood, basketry, and bamboo tubes. The launchers divided the rockets with frames meant to keep them separated, and the launchers were capable of firing multiple rockets at once. Textual evidence and illustrations of various early rocket launchers are found in the 1510 edition of the ''Wujing Zongyao'' translated by Needham and others at Princeton University. (The original ''Wujing Zongyao'' was compiled between 1040 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface-to-air Missiles Of The Cold War
A surface-to-air missile (SAM), also known as a ground-to-air missile (GTAM) or surface-to-air guided weapon (SAGW), is a missile designed to be launched from the ground to destroy aircraft or other missiles. It is one type of anti-aircraft system; in modern armed forces, missiles have replaced most other forms of dedicated anti-aircraft weapons, with anti-aircraft guns pushed into specialized roles. The first attempt at SAM development took place during World War II, but no operational systems were introduced. Further development in the 1940s and 1950s led to operational systems being introduced by most major forces during the second half of the 1950s. Smaller systems, suitable for close-range work, evolved through the 1960s and 1970s, to modern systems that are man-portable. Shipborne systems followed the evolution of land-based models, starting with long-range weapons and steadily evolving toward smaller designs to provide a layered defence. This evolution of design increas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telemetry
Telemetry is the in situ data collection, collection of measurements or other data at remote points and their automatic data transmission, transmission to receiving equipment (telecommunication) for monitoring. The word is derived from the Greek language, Greek roots ''tele'', "remote", and ''metron'', "measure". Systems that need external instructions and data to operate require the counterpart of telemetry, telecommand. Although the term commonly refers to wireless data transfer mechanisms (e.g., using radio, ultrasonic, or Infrared#Communications, infrared systems), it also encompasses data transferred over other media such as a telephone or computer network, optical link or other wired communications like power line carriers. Many modern telemetry systems take advantage of the low cost and ubiquity of GSM networks by using SMS to receive and transmit telemetry data. A ''telemeter'' is a physical device used in telemetry. It consists of a sensor, a transmission path, and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Measuring
Measurement is the quantification of attributes of an object or event, which can be used to compare with other objects or events. In other words, measurement is a process of determining how large or small a physical quantity is as compared to a basic reference quantity of the same kind. The scope and application of measurement are dependent on the context and discipline. In natural sciences and engineering, measurements do not apply to nominal properties of objects or events, which is consistent with the guidelines of the ''International vocabulary of metrology'' published by the International Bureau of Weights and Measures. However, in other fields such as statistics as well as the social and behavioural sciences, measurements can have multiple levels, which would include nominal, ordinal, interval and ratio scales. Measurement is a cornerstone of trade, science, technology and quantitative research in many disciplines. Historically, many measurement systems existed for t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yugoslav People's Army
The Yugoslav People's Army (abbreviated as JNA/; Macedonian and sr-Cyrl-Latn, Југословенска народна армија, Jugoslovenska narodna armija; Croatian and bs, Jugoslavenska narodna armija; sl, Jugoslovanska ljudska armada, JLA), also called the Yugoslav National Army, was the military of the Socialist Federal Republic of Yugoslavia and its antecedents from 1945 to 1992. Origins The origins of the JNA started during the Yugoslav Partisans of World War II. As a predecessor of the JNA, the People's Liberation Army of Yugoslavia (NOVJ) was formed as a part of the anti-fascist People's Liberation War of Yugoslavia in the Bosnian town of Rudo on 22 December 1941. After the Yugoslav Partisans liberated the country from the Axis Powers, that date was officially celebrated as the "Day of the Army" in the Socialist Federal Republic of Yugoslavia (SFR Yugoslavia). In March 1945, the NOVJ was renamed the "Yugoslav Army" ("''Jugoslavenska/Jugoslovenska Armija' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USSR
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national republics; in practice, both its government and its economy were highly centralized until its final years. It was a one-party state governed by the Communist Party of the Soviet Union, with the city of Moscow serving as its capital as well as that of its largest and most populous republic: the Russian SFSR. Other major cities included Leningrad (Russian SFSR), Kiev ( Ukrainian SSR), Minsk ( Byelorussian SSR), Tashkent (Uzbek SSR), Alma-Ata (Kazakh SSR), and Novosibirsk (Russian SFSR). It was the largest country in the world, covering over and spanning eleven time zones. The country's roots lay in the October Revolution of 1917, when the Bolsheviks, under the leadership of Vladimir Lenin, overthrew the Russian Provisional Gove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S-75 Dvina
The S-75 (Russian: С-75; NATO reporting name SA-2 Guideline) is a Soviet-designed, high-altitude air defence system, built around a surface-to-air missile with command guidance. Following its first deployment in 1957 it became one of the most widely deployed air defence systems in history. It scored the first destruction of an enemy aircraft by a surface-to-air missile, with the shooting down of a Taiwanese Martin RB-57D Canberra over China on 7 October 1959 that was hit by a salvo of three V-750 (1D) missiles at an altitude of 20 km (65,600 ft). This success was credited to Chinese fighter aircraft at the time to keep the S-75 program secret. This system first gained international fame when an S-75 battery, using the newer, longer-range, higher-altitude V-750VN (13D) missile was deployed in the 1960 U-2 incident, when it shot down the Lockheed U-2, U-2 of Francis Gary Powers overflying the Soviet Union on May 1, 1960. The system was also deployed in Cuba during the C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infrared
Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from around 1 millimeter (300 GHz) to the nominal red edge of the visible spectrum, around 700 nanometers (430 THz). Longer IR wavelengths (30 μm-100 μm) are sometimes included as part of the terahertz radiation range. Almost all black-body radiation from objects near room temperature is at infrared wavelengths. As a form of electromagnetic radiation, IR propagates 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 emit invisible heat; in 1681 the pioneering experimenter Edme Mariotte showed that glass, though transparent to sunlight, obstructed radiant heat. In 1800 the astronomer Sir William Herschel discovered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M 61 Fruška Gora
M, or m, is the thirteenth Letter (alphabet), letter in the Latin alphabet, used in the English alphabet, modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is English alphabet#Letter names, ''em'' (pronounced ), plural ''ems''. History The letter M is derived from the Phoenician alphabet, Phoenician Mem, via the Greek alphabet, Greek Mu (letter), Mu (Μ, μ). Semitic alphabets, Semitic Mem is most likely derived from a "Proto-Sinaitic script, Proto-Sinaitic" (Bronze Age) adoption of the N-water ripple (n hieroglyph), "water" ideogram in Egyptian hieroglyphs, Egyptian writing. The Egyptian sign had the acrophonic value , from the Egyptian word for "water", ''nt''; the adoption as the Semitic letter for was presumably also on acrophonic grounds, from the Semitic languages, Semitic word for "water", '':wikt:Reconstruction:Proto-Semitic/maʾ-, *mā(y)-''. Use in writing systems The letter represents the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asahi Shimbun
is one of the four largest newspapers in Japan. Founded in 1879, it is also one of the oldest newspapers in Japan and Asia, and is considered a newspaper of record for Japan. Its circulation, which was 4.57 million for its morning edition and 1.33 million for its evening edition as of July 2021, was second behind that of the ''Yomiuri Shimbun''. By print circulation, it is the third largest newspaper in the world behind the ''Yomiuri'', though its digital size trails that of many global newspapers including ''The New York Times''. Its publisher, is a media conglomerate with its registered headquarters in Osaka. It is a privately held family business with ownership and control remaining with the founding Murayama and Ueno families. According to the Reuters Institute Digital Report 2018, public trust in the ''Asahi Shimbun'' is the lowest among Japan's major dailies, though confidence is declining in all the major newspapers. The ''Asahi Shimbun'' is one of the five largest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.png "Click for more on -> Asahi Shimbun"){kind=spacer}