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DS-P1-Yu
DS-P1-Yu was a series of Soviet satellites developed by the Yuzhnoye Design Office, for use in calibrating the Dnestr space surveillance and early-warning radar system. Between 1964 and 1976, a total of 79 satellites were launched on Kosmos and Kosmos-2I launchers, with seven failing to reach orbit. The dodecahedral satellites had a mass of and an operational lifetime of 60 days. They were covered in solar panels and a metallic mesh transparent to visible spectrum The visible spectrum is the spectral band, band of the electromagnetic spectrum that is visual perception, visible to the human eye. Electromagnetic radiation in this range of wavelengths is called ''visible light'' (or simply light). The optica ... light and opaque to radio frequencies. The DS-P1-Yu replaced the similar DS-P1, of which four were launched between 1962 and 1964, with one failure to reach orbit. References Soviet military spacecraft {{USSR-spacecraft-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dnestr Radar
Dnestr radar () and Dnepr radar (), both known by the NATO reporting name Hen House, are the first generation of Soviet space surveillance and early warning radars. Six radars of this type were built on the periphery of the Soviet Union starting in the 1960s to provide ballistic missile warnings for attacks from different directions. They were the primary Soviet early warning radars for much of the later Cold War. In common with other Soviet and Russian early warning radars they are named after rivers, the Dnestr and the Dnepr. The Dnestr/Dnepr radars were intended to be replaced by the newer Daryal radars starting in the 1990s. Only two of the planned Daryal radars became operational, due to issues such as the dissolution of the Soviet Union. As of 2012, the Russian early warning network still consists of some radars of this vintage. It is likely that all the existing radars will be replaced by the third generation Voronezh radars by 2020. TsSO-P The Dnestr radar came fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar Calibration Satellite
Radar calibration satellites are orbital satellites used to calibrate ground-based space surveillance radars. There are two types: active and passive. Passive satellites Passive calibration satellites are objects of known shape and size. Examples include the Lincoln Calibration Sphere 1 developed by the MIT Lincoln Laboratory. These are generally solid or hollow spheres, since that shape will have the same cross-section regardless of viewing angle, though later passive satellites used wire grid designs. A ground radar calculates the satellite's position using knowledge of the satellite's radar cross section, and this is compared with the satellite's known position and velocity. Active satellites Active calibration satellites are equipped with transponders that emit a signal on command. The ground radar station submits a transmit command and takes a measurement of the satellite's location. The transponder's signal is received by a radar receiver and combined with the satellite's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kosmos (rocket Family)
The Kosmos (also spelled Cosmos, Russian language, Russian: ) rockets were a series of Soviet Union, Soviet and subsequently Russian rockets, derived from the R-12 Dvina, R-12 and R-14 Chusovaya, R-14 missiles, the best known of which is the Kosmos-3M, which has made over 440 launches. The Kosmos family contained a number of rockets, both carrier rockets and sounding rockets, for orbital and sub-orbital spaceflight respectively. The first variant, the Kosmos (rocket), Kosmos, first flew on 27 October 1961. Over 700 Kosmos rockets have been launched overall. Variants Based on the R-12 Kosmos Kosmos (GRAU Index: 63S1, also known as Cosmos), was the name of a Soviet space rocket model active between 1961 and 1967. Kosmos was developed from the R-12 medium-range missile. It was launched a total of 38 times, with twelve failures. Kosmos-2M The Kosmos-2M (GRAU Index: 63S1M, also known as Cosmos-2M) rocket was the prototype preceding the Kosmos-2I rocket. It launched the Kosmos ... [...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] |
Satellite
A satellite or an artificial satellite is an object, typically a spacecraft, placed into orbit around a celestial body. They have a variety of uses, including communication relay, weather forecasting, navigation ( GPS), broadcasting, scientific research, and Earth observation. Additional military uses are reconnaissance, early warning, signals intelligence and, potentially, weapon delivery. Other satellites include the final rocket stages that place satellites in orbit and formerly useful satellites that later become defunct. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioisotope thermoelectric generators (RTGs). Most satellites also have a method of communication to ground stations, called transponders. Many satellites use a standardized bus to save cost and work, the most popular of which are small CubeSats. Similar satellites can work together as groups, forming constellatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yuzhnoye Design Office
The ''Pivdenne'' Design Office (), located in Dnipro, Ukraine, is a designer of satellites and rockets, and formerly of Soviet intercontinental ballistic missiles (ICBMs), established by Mikhail Yangel. During the Soviet era, the bureau's OKB designation was OKB-586. The company is in close co-operation with the PA Pivdenmash multi-product machine-building company, also situated in Dnipro. Pivdenmash is the main manufacturer of the models developed by Pivdenne Design Office. Directors * 1954–1971 Mikhail Yangel * 1971–1991 Vladimir Utkin * 1991–2010 * 2010–2020 Products Current Ballistic missiles * Hrim-2 Orbital launch vehicles * Zenit rocket family ** Zenit-2 **Zenit-2M ** Zenit-3F ** Zenit-3SL ** Zenit-3SLB *Antares first stage core, in cooperation with Orbital Sciences Corporation * Dnepr, converted R-36 ICBM * R-36 ICBM, NATO reporting name SS-18 'Satan' Rocket engines *Main engines ** RD-843 ** RD-853 ** RD-859 ** ** RD-861K ** RD-866 ** RD-868 *Steeri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Surveillance
Space domain awareness is the study and monitoring of satellites orbiting the Earth. It involves the detection, tracking, cataloging and identification of artificial objects, i.e. active/inactive satellites, spent rocket bodies, or fragmentation debris. Aims Space domain awareness accomplishes the following: * Predicting when and where a decaying space object will re-enter the Earth's atmosphere; * Preventing a returning space object, which to radar looks like a missile, from triggering a false alarm in missile-attack warning sensors; * Charting the present position of space objects and plot their anticipated orbital paths; * Detecting new human-made objects in space; * Producing a running catalogue of human-made space objects; * Determining which country owns a re-entering space object; * Informing countries whether or not objects may interfere with satellites and International Space Station The International Space Station (ISS) is a large space station that was Asse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early-warning Radar
An early-warning radar is any radar system used primarily for the long-range detection of its targets, i.e., allowing defences to be alerted as ''early'' as possible before the intruder reaches its target, giving the air defences the maximum time in which to operate. This contrasts with systems used primarily for tracking or gun laying, which tend to offer shorter ranges but offer much higher accuracy. EW radars tend to share a number of design features that improve their performance in the role. For instance, EW radar typically operates at lower frequencies, and thus longer wavelengths, than other types. This greatly reduces their interaction with rain and snow in the air, and therefore improves their performance in the long-range role where their coverage area will often include precipitation. This also has the side-effect of lowering their optical resolution, but this is not important in this role. Likewise, EW radars often use much lower pulse repetition frequency to maximi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kosmos (rocket)
The Kosmos (also spelled Cosmos, Russian: ) rockets were a series of Soviet and subsequently Russian rockets, derived from the R-12 and R-14 missiles, the best known of which is the Kosmos-3M, which has made over 440 launches. The Kosmos family contained a number of rockets, both carrier rockets and sounding rockets, for orbital and sub-orbital spaceflight respectively. The first variant, the Kosmos, first flew on 27 October 1961. Over 700 Kosmos rockets have been launched overall. Variants Based on the R-12 Kosmos Kosmos (GRAU Index: 63S1, also known as Cosmos), was the name of a Soviet space rocket model active between 1961 and 1967. Kosmos was developed from the R-12 medium-range missile. It was launched a total of 38 times, with twelve failures. Kosmos-2M The Kosmos-2M (GRAU Index: 63S1M, also known as Cosmos-2M) rocket was the prototype preceding the Kosmos-2I rocket. It launched the Kosmos 106 and Kosmos 97 satellites, from Area 86 at Kapustin Yar. Kosmos-2I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dodecahedron
In geometry, a dodecahedron (; ) or duodecahedron is any polyhedron with twelve flat faces. The most familiar dodecahedron is the regular dodecahedron with regular pentagons as faces, which is a Platonic solid. There are also three Kepler–Poinsot polyhedron, regular star dodecahedra, which are constructed as stellations of the convex form. All of these have icosahedral symmetry, order 120. Some dodecahedra have the same combinatorial structure as the regular dodecahedron (in terms of the graph formed by its vertices and edges), but their pentagonal faces are not regular: The #Pyritohedron, pyritohedron, a common crystal form in pyrite, has pyritohedral symmetry, while the #Tetartoid, tetartoid has tetrahedral symmetry. The rhombic dodecahedron can be seen as a limiting case of the pyritohedron, and it has octahedral symmetry. The elongated dodecahedron and trapezo-rhombic dodecahedron variations, along with the rhombic dodecahedra, are space-filling polyhedra, space-filling. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Panel
A solar panel is a device that converts sunlight into electricity by using photovoltaic (PV) cells. PV cells are made of materials that produce excited electrons when exposed to light. These electrons flow through a circuit and produce direct current (DC) electricity, which can be used to power various devices or be stored in battery (electricity), batteries. Solar panels are also known as solar cell panels, solar electric panels, or PV modules. Solar panels are usually arranged in groups called arrays or systems. A photovoltaic system consists of one or more solar panels, an solar inverter, inverter that converts DC electricity to alternating current (AC) electricity, and sometimes other components such as charge controller, controllers, Measuring instrument, meters, and solar tracker, trackers. Most panels are in solar farms or Rooftop solar power, rooftop solar panels which grid-connected photovoltaic system, supply the electricity grid. Some advantages of solar panels are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
