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2022 Zagreb Tu-141 Crash
On 10 March 2022 at 23:01 CET, an unidentified Soviet-made Tupolev Tu-141 reconnaissance unmanned aerial vehicle (UAV) crashed in Zagreb, the capital of Croatia. With an unidentified operator and unknown destination (as of April 2022), the origin of the drone is presumed to be connected to military actions during the Russian invasion of Ukraine. Technological background The Tupolev Tu-141 is a Soviet-made unmanned aerial vehicle (UAV) made in the late 1970s. It weighs almost six tons, and it is launched off a truck where its flight path is also programmed. Analysts describe that after its launch, Tu-141 behaves more like a modern cruise missile than a traditional UAV. When its flight is completed, the aircraft descends to the ground using parachutes so it can be reused. Range of the aircraft is 1,000 km (620 mi, 540 nmi).Munson ''Air International'' August 1997, p. 101. Crash The unmanned aerial vehicle entered Romanian airspace around 23:23 EET, where it was obser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Air Force Museum
The Central Air Force Museum (russian: Центральный музей Военно-воздушных сил РФ) is an aviation museum in Monino, Moscow Oblast, Russia. A branch of the Central Armed Forces Museum, it is one of the world's largest aviation museums, and the largest for Soviet aircraft, with a collection including 173 aircraft and 127 aircraft engines on display. The museum also features additional displays, including Cold War-era United States, American espionage equipment, weapons, instruments, uniforms, artwork, and a library containing books, films, and photos is also accessible to visitors. The Central Air Force Museum is located on the grounds of the Gagarin Air Force Academy on the site of the former Monino Airfield, east of Moscow. History The origins of the museum go back to 1940 when the village of Monino was selected to be the location of what is now the Gagarin Air Force Academy. The museum itself was founded in 1958, two years after the airfield ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hungarian Air Force
The Hungarian Air Force ( hu, Magyar Légierő), is the air force branch of the Hungarian Defence Forces. The task of the current Hungarian Air Force is primarily defensive purposes. The flying units of the air force are organised into a single command; under the Air Command and Control Centre. History 1918 to pre–World War II Following the dissolution of the Austro-Hungarian Monarchy in 1918, a small air arm was established operating surviving aircraft from Hungarian factories and training schools. This air arm became the Hungarian Red Air Force under the short-lived Hungarian Soviet Republic, but was disbanded upon its downfall. World War II Under the Treaty of Trianon (1920), Hungary was forbidden from owning military aircraft. However, a secret air arm was gradually established under the cover of civilian flying clubs. During 1938, as a result of the Bled agreement, the existence of the Royal Hungarian Air Force ( hu, Magyar Királyi Honvéd Légierő (MKHL)), was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Explosive Device
An explosive device is a device that relies on the exothermic reaction of an explosive material to provide a violent release of energy. Applications of explosive devices include: *Building implosion (demolition) * Excavation *Explosive forming *Explosive welding *Mining *Murder **Assassination *Riot control *Terrorism *War Types of explosive devices include: *Explosive weapon **Anti-personnel mine **Artillery shells **Bomb **Grenade **Improvised explosive device **Land mine **Nuclear explosive device ** Unexploded ordnance *Car bomb *Letter bomb *Stun grenade *Some pyrotechnics **Fireworks *Explosively pumped flux compression generator *Explosive-driven ferroelectric generator An explosive-driven ferroelectric generator (EDFEG, explosively pumped ferroelectric generator, EPFEG, or FEG) is a compact pulsed power generator, a device used for generation of short high-voltage high-current pulse. The energies available are fai ... Demolition hu:Robbanóeszköz {{Explosive-st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chief Of The General Staff Of The Armed Forces Of The Republic Of Croatia
The Chief of the General Staff of the Armed Forces of the Republic of Croatia ( hr, Načelnik Glavnog stožera Oružanih snaga Republike Hrvatske) is the chief of the General Staff of the Armed Forces of Croatia. The Chief of the General Staff is appointed by the President of Croatia, who is the commander-in-chief. The incumbent Chief of the General Staff is Admiral Robert Hranj, since 1 March 2020. List of chiefs of the general staff Timeline ImageSize = width:1000 height:auto barincrement:10 PlotArea = top:10 bottom:50 right:160 left:20 AlignBars = late DateFormat = yyyy Period = from:1990 till:2025 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:5 start:1990 Define $now = 2022 Colors = id:cgs value:rgb(1,0,0) legend: Chief id:acgs value:rgb(0.7,0.7,0.7) legend: Acting_Chief id:time value:rgb(0.9,0.9,0.9) Legend = orientation:vertical position:right LineData = layer:back width:0.1 color:time at:1990 at: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Croatian Army
The Croatian Army ( hr, Hrvatska kopnena vojska or HKoV) is the largest and most significant component of the Croatian Armed Forces (CAF). Role and deployment The fundamental role and purpose of the Croatian Army is to protect vital national interests of the Republic of Croatia and defend the sovereignty and territorial integrity of the state. The Croatian Army's primary tasks are to: * Defend against possible aggression at strategic operational levels and to defend against any land, air, or amphibious assault, in co-operation with the other branches of the CAF. * Help allies and friendly countries in time of need. * Build the capability to carry out non-traditional tasks such as humanitarian support during floods, fires, and other natural disasters. Recent and current operations North Atlantic Treaty Organisation (NATO) The Croatian Army has contributed to the following NATO missions: * NATO EFP Battlegroups (Lithuania & Poland) - 2017 * Operation Resolute Support (Af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Star
A red star, five-pointed and filled, is a symbol that has often historically been associated with communist ideology, particularly in combination with the hammer and sickle, but is also used as a purely socialist symbol in the 21st century. It has been widely used in flags, state emblems, monuments, ornaments, and logos. One interpretation sees the five points as representing the five fingers of the worker's hand, as well as the five populated continents (counting the Americas as one). A lesser-known suggestion is that in communist symbolism, the five points on the star were intended to represent the five social groups that would lead Russia to communism: the youth, the military, the industrial labourers, the agricultural workers or peasantry and the intelligentsia. In Soviet heraldry, the red star symbolized the Red Army and military service, as opposed to the hammer and sickle, which symbolized peaceful labour. Different countries across Europe treat the symbol very diff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyrillic Script
The Cyrillic script ( ), Slavonic script or the Slavic script, is a writing system used for various languages across Eurasia. It is the designated national script in various Slavic languages, Slavic, Turkic languages, Turkic, Mongolic languages, Mongolic, Uralic languages, Uralic, Caucasian languages, Caucasian and Iranian languages, Iranic-speaking countries in Southeastern Europe, Eastern Europe, the Caucasus, Central Asia, North Asia, and East Asia. , around 250 million people in Eurasia use Cyrillic as the official script for their national languages, with Russia accounting for about half of them. With the accession of Bulgaria to the European Union on 1 January 2007, Cyrillic became the third official script of the European Union, following the Latin script, Latin and Greek alphabet, Greek alphabets. The Early Cyrillic alphabet was developed during the 9th century AD at the Preslav Literary School in the First Bulgarian Empire during the reign of tsar Simeon I of Bulgar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Era
The history of Soviet Russia and the Soviet Union (USSR) reflects a period of change for both Russia and the world. Though the terms "Soviet Russia" and "Soviet Union" often are synonymous in everyday speech (either acknowledging the dominance of Russia over the Soviet Union or referring to Russia during the era of the Soviet Union), when referring to the foundations of the Soviet Union, "Soviet Russia" often specifically refers to brief period between the October Revolution of 1917 and the creation of the Soviet Union in 1922. Before 1922, there were four independent Soviet Republics: the Russian Soviet Federative Socialist Republic, Ukrainian Soviet Socialist Republic, Byelorussian SSR, and Transcaucasian SFSR. These four became the first Union Republics of the Soviet Union, and was later joined by the Bukharan People's Soviet Republic and Khorezm People's Soviet Republic in 1924. During and immediately after World War II, various Soviet Republics annexed portions of count ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Law Enforcement In Croatia
Law enforcement in Croatia is the responsibility of the Croatian Police ( hr, Hrvatska policija), which is the national police force of the country subordinated by the Ministry of the Interior of the Republic of Croatia, carrying out certain tasks, the so-called, police activities, laid down by law. The Police deals with the following affairs: protection of individual life, rights, security and integrity, protection of property, prevention and detection of criminal offences, misdemeanors, violations, search for perpetrators of criminal offences, misdemeanors, violations and their bringing before competent authorities, control and management of road traffic, conducting affairs with aliens, control and security of state border, and other affairs defined by law. In the operative sense, police affairs are divided into affairs related to public peace and order, affairs related to security of public gatherings, affairs of the border police, affairs of safety of road traffic, affairs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epicenter
The epicenter, epicentre () or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates. Surface damage Before the instrumental period of earthquake observation, the epicenter was thought to be the location where the greatest damage occurred, but the subsurface fault rupture may be long and spread surface damage across the entire rupture zone. As an example, in the magnitude 7.9 Denali earthquake of 2002 in Alaska, the epicenter was at the western end of the rupture, but the greatest damage was about away at the eastern end. Focal depths of earthquakes occurring in continental crust mostly range from . Continental earthquakes below are rare whereas in subduction zone earthquakes can originate at depths deeper than . Epicentral distance During an earthquake, seismic waves propagate in all directions from the hypocenter. Seismic shadowing occurs on the opposite s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seismic Wave
A seismic wave is a wave of acoustic energy that travels through the Earth. It can result from an earthquake, volcanic eruption, magma movement, a large landslide, and a large man-made explosion that produces low-frequency acoustic energy. Seismic waves are studied by seismologists, who record the waves using seismometers, hydrophones (in water), or accelerometers. Seismic waves are distinguished from seismic noise (ambient vibration), which is persistent low-amplitude vibration arising from a variety of natural and anthropogenic sources. The propagation velocity of a seismic wave depends on density and elasticity of the medium as well as the type of wave. Velocity tends to increase with depth through Earth's crust and mantle, but drops sharply going from the mantle to Earth's outer core. Earthquakes create distinct types of waves with different velocities. When recorded by a seismic observatory, their different travel times help scientists locate the quake's hypocen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seismological Service Of Croatia
Faculty of Science ( hr, Prirodoslovno-matematički fakultet,lit. the Faculty of natural sciences and mathematics abbr: ''PMF'') is a faculty of the University of Zagreb that comprises seven departments - biology, physics, chemistry, mathematics, geophysics, geography and geology. The Faculty has 288 full professors, associate and assistant professors, 180 junior researchers and about 6000 students. The Faculty of Science was formally established in 1946, although the teaching of these subjects had existed in the university since 1876. The Faculty offers undergraduate, graduate, and postgraduate study programmes, and pursues research in the fields of natural sciences and mathematics. It also encompasses the seismological service, the mareographic and meteorological stations, and the Zagreb Botanical Garden. The Faculty of Science is engaged in excellent cooperation with numerous universities and institutes abroad. Professors of the Faculty have been invited as visiting lectu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
