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Željava Air Base
Željava Air Base, situated on the border between Croatia and Bosnia and Herzegovina under the mountain, near the city of Bihać, was the largest underground hangar and military air base in the SFR Yugoslavia, Socialist Federal Republic of Yugoslavia (SFRY), and one of the largest in Europe. The facilities are shared by the local governments of Bihać and Lika-Senj County of Croatia. History The "Objekat" series of military installations can be found in secluded but strategically important areas within the former Yugoslavia, and the construction of these military bases was initialized by the SFRY's defence ministry. During the Yugoslav Wars, most of these bases were used by the Serbs in certain operations, but due to extenuating circumstances imposed by the Croat forces, they were destroyed and later rendered useless for military use. Nowadays, they are popular for urban exploration, although it is risky due to the possibility of anti-personnel landmines being located in unexpl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Air Base
An airbase (stylised air base in American English), sometimes referred to as a military airbase, military airfield, military airport, air station, naval air station, air force station, or air force base, is an aerodrome or airport used as a military base by a military force for the operation of military aircraft. Airbase facilities An airbase typically has some facilities similar to a Civil aviation, civilian airport; for example, air traffic control and Aircraft rescue and firefighting, firefighting. Some military aerodromes have passenger facilities; for example, RAF Brize Norton in England has a terminal used by passengers for the Royal Air Force's passenger transport flights. A number of military airbases may also have a civil enclave for commercial passenger flights, e.g. Beijing Nanyuan Airport (China), Chandigarh Airport (India), Ibaraki Airport (Japan), Burlington International Airport (USA), Sheikh Ul-Alam International Airport Srinagar (India), Taipei Songshan Airpo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlas Obscura
''Atlas Obscura'' is an United States, American-based travel and exploration company. It was founded in 2009 by author Joshua Foer and documentary filmmaker/author Dylan Thuras. It catalogs unusual and obscure travel destinations via professional and user-generated content, operates group trips to destinations around the world, produces a daily podcast, as well as books, TV and film. The brand covers a number of topics including history, science, food, and obscure places. History Thuras and Foer met in 2007, and soon discussed ideas for a different kind of atlas, featuring places not commonly found in guidebooks. They hired a web designer in 2008 and launched ''Atlas Obscura'' in 2009. Annetta Black was the site's first senior editor. In 2010, the site organized the first of the international events known as Obscura Day. Thuras has stated that one of the site's main goals is "Creating a real-world community who are engaging with us, each other and these places and getting away ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface-to-air Missile
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 or the sea to destroy aircraft or other missiles. It is one type of anti-aircraft warfare, 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. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cafeteria
A cafeteria, called canteen outside the U.S., is a type of food service location in which there is little or no waiting staff table service, whether in a restaurant or within an institution such as a large office building or school; a school dining location is also referred to as a dining hall or lunchroom (in American English). Cafeterias are different from coffeehouses, although the English term came from the Spanish term ''cafetería'', which carries the same meaning. Instead of table service, there are food-serving counters/stalls or booths, either in a line or allowing arbitrary walking paths. Customers take the food that they desire as they walk along, placing it on a tray. In addition, there are often stations where customers order food, particularly items such as hamburgers or tacos which must be served hot and can be immediately prepared with little waiting. Alternatively, the patron is given a number and the item is brought to their table. For some food items ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Novi Avion
The Novi Avion (Serbian Cyrillic: Нови Aвион ) was a fourth generation multi-role combat aircraft programme that was to be built by Yugoslav aircraft manufacturer SOKO. The Avion featured a cropped delta- canard configuration and was to be capable of achieving supersonic speeds under a combat configuration. The Avion shared several areas of commonality with French company Dassault Aviation's Rafale fighter aircraft; France had provided considerable technical assistance to Yugoslavia during the course of the Avion programme. Development work on the fighter was undertaken by the ''Vazduhoplovno Tehnički Institut'' (VTI) (Aeronautical Technical Institute) of Belgrade, the former Yugoslavia's main military-technical institute, in cooperation with Dassault Aviation. Upon its entry to service with the Yugoslav Air Force, which was anticipated to occur during the late 1990s to early 2000s, the Avion would have been used as a replacement for the nation's aging fleet of Mikoy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fixed-wing Aircraft
A fixed-wing aircraft is a heavier-than-air aircraft, such as an airplane, which is capable of flight using aerodynamic lift. Fixed-wing aircraft are distinct from rotary-wing aircraft (in which a rotor mounted on a spinning shaft generates lift), and ornithopters (in which the wings oscillate to generate lift). The wings of a fixed-wing aircraft are not necessarily rigid; kites, hang gliders, variable-sweep wing aircraft, and airplanes that use wing morphing are all classified as fixed wing. Gliding fixed-wing aircraft, including free-flying gliders and tethered kites, can use moving air to gain altitude. Powered fixed-wing aircraft (airplanes) that gain forward thrust from an engine include powered paragliders, powered hang gliders and ground effect vehicles. Most fixed-wing aircraft are operated by a pilot, but some are unmanned or controlled remotely or are completely autonomous (no remote pilot). History Kites Kites were used approximately 2,800 years ago ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mikoyan-Gurevich MiG-21 Variants
This is a list of variants and specifications for variants of the Mikoyan-Gurevich MiG-21, which differed considerably between models. Variants All information in this section adapted from ''MiG-21'' (2008).Gordon, Yefim. ''Mikoyan MiG-21'' (Famous Russian aircraft). Hinckley: Midland, 2008. . Development and preproduction – Generation Zero (1954–1956) ; (1954) :Preliminary swept-wing design around the Mikulin AM-5A non-reheated turbojet. Instead of building it, the design was quickly reworked into the Ye-2. ; (1954; NATO reporting name, NATO: "Faceplate") :Swept-wing prototype with Mikulin AM-9B reheated turbojet, armed with three NR-30 cannon, and could carry one UB-16-57 rocket pod. Fitted with RSIU-4 VHF radio, ''Uzel'' IFF interrogator, ARK-5 ''Amur'' automatic direction finder with RUP landing approach computer, MRP-48P ''Dyatel'' marker beacon receiver, SRO-2 ''Khrom'' IFF transponder, ''Sirena-2'' RWR, SRD-1M ''Radal'-M'' radar rangefinder linked to an ASP-5N computin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squadron (aviation)
A squadron in an air force, or naval or army aviation service, is a unit comprising a number of military aircraft and their aircrews, usually of the same type, typically with 12 to 24 aircraft, sometimes divided into three or four flights, depending on aircraft type and air force. In most armed forces, two or more squadrons will form a group or a wing. Some military forces (including the United States Air Force, United States Space Force, French Air and Space Force, Royal Air Force, German Air Force, Royal Netherlands Air Force, Belgian Air Component and Republic of Singapore Air Force) also use the term "squadron" for non-flying ground units (e.g. radar squadrons, missile squadrons, air defense squadrons, aircraft maintenance squadrons, security forces squadrons, civil engineering squadrons, range operations squadrons, range management squadrons, weather squadrons, medical squadrons, etc.). Comparative organization Germany In World War I, the Imperial Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomic Bombings Of Hiroshima And Nagasaki
On 6 and 9 August 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki, respectively, during World War II. The aerial bombings killed between 150,000 and 246,000 people, most of whom were civilians, and remain the only uses of Nuclear warfare, nuclear weapons in an armed conflict. Surrender of Japan, Japan announced its surrender to the Allies on 15 August, six days after the bombing of Nagasaki and the Soviet–Japanese War, Soviet Union's declaration of war against Japan and Soviet invasion of Manchuria, invasion of Manchuria. The Japanese government signed an Japanese Instrument of Surrender, instrument of surrender on 2 September, End of World War II in Asia, ending the war. In the final year of World War II, the Allies of World War II, Allies prepared for a costly Operation Downfall, invasion of the Japanese mainland. This undertaking was preceded by a Air raids on Japan, conventional bombing and firebombing campaign that de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Bomb
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission or atomic bomb) or a combination of fission and fusion reactions (thermonuclear weapon), producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter. Nuclear bombs have had yields between 10 tons (the W54) and 50 megatons for the Tsar Bomba (see TNT equivalent). Yields in the low kilotons can devastate cities. A thermonuclear weapon weighing as little as can release energy equal to more than 1.2 megatons of TNT (5.0 PJ). Apart from the blast, effects of nuclear weapons include firestorms, extreme heat and ionizing radiation, radioactive nuclear fallout, an electromagnetic pulse, and a radar blackout. The first nuclear weapons were developed by the Allied Manhattan Project during World War II. Their production continues to require a large scientific and industrial complex, prim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kiloton
TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion. A ton of TNT equivalent is a unit of energy defined by convention to be (). It is the approximate energy released in the detonation of a tonne, metric ton (1,000 kilograms) of trinitrotoluene (TNT). In other words, for each gram of TNT exploded, (or 4184 joules) of energy are released. This convention intends to compare the destructiveness of an event with that of conventional explosive materials, of which TNT is a typical example, although other conventional explosives such as dynamite contain more energy. A related concept is the physical quantity TNT-equivalent mass (or mass of TNT equivalent), expressed in the ordinary unit of mass, units of mass and its multiples: kilogram (kg), megagram (Mg) or tonne (t), etc. Kiloton and megaton The "kiloton (of TNT equivalent)" is a unit of energy equal to 4.184 Metric prefix#List of SI prefixes, terajoules (). A kil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NORAD
North American Aerospace Defense Command (NORAD ; , CDAAN), known until March 1981 as the North American Air Defense Command, is a combined organization of the United States and Canada that provides aerospace warning, air sovereignty, and protection for Canada and the continental United States. Headquarters for NORAD and the NORAD/ United States Northern Command (USNORTHCOM) center are located at Peterson Space Force Base in El Paso County, near Colorado Springs, Colorado. The nearby Cheyenne Mountain Complex has the Alternate Command Center. The NORAD commander and deputy commander are, respectively, a United States four-star general or equivalent and a Canadian lieutenant-general or equivalent. Command NORAD is headed by its commander, who is a four-star general or admiral in the United States Armed Forces. The deputy commander is a Royal Canadian Air Force lieutenant general. Prior to the 1968 unification of the Canadian Forces, the deputy commander was an RCAF ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
