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Tianhe (space Station Module)
''Tianhe'' (), officially the ''Tianhe'' core module (), is the first module to launch of the Tiangong space station. It was launched into orbit on 29 April 2021, as the first launch of the final phase of Tiangong program, part of the China Manned Space Program ( Project 921). ''Tianhe'' follows the earlier projects Salyut, Skylab, Mir, International Space Station, Tiangong-1 and Tiangong-2 space stations. It is the first module of a third-generation Chinese modular space station. Other examples of modular station projects include the Soviet/Russian Mir and the International Space Station. Operations will be controlled from the Beijing Aerospace Flight Control Center. In 2018, a fullscale mockup of ''Tianhe'' was publicly presented at China International Aviation & Aerospace Exhibition in Zhuhai. In October 2020, China selected 18 new astronauts ahead of the space station construction to participate in the country's space station project. Functions and systems The core ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Tiangong Space Station
Tiangong (), officially the ''Tiangong'' space station (), is a permanently crewed space station constructed by China and operated by China Manned Space Agency. Tiangong is a modular design, with modules docked together while in low Earth orbit, between above the surface. It is China's first long-term space station, part of the Tiangong program and the core of the "Third Step" of the China Manned Space Program; it has a pressurised volume of 340 m3 (12,000 cu ft), slightly over one third the size of the International Space Station. The space station aims to provide opportunities for space-based experiments and a platform for building capacity for scientific and technological innovation. The construction of the station is based on the experience gained from its precursors, Tiangong-1 and Tiangong-2. The first module, the ''Tianhe core module, Tianhe'' ("Harmony of the Heavens") core module, was launched on 29 April 2021. This was followed by multiple crewed and uncrewed miss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Attitude Control (spacecraft)
Spacecraft attitude control is the process of controlling the orientation of a spacecraft (vehicle or satellite) with respect to an inertial frame of reference or another entity such as the celestial sphere, certain fields, and nearby objects, etc. Controlling vehicle attitude requires actuators to apply the torques needed to orient the vehicle to a desired attitude, and algorithms to command the actuators based on the current attitude and specification of a desired attitude. Before and during attitude control can be performed, spacecraft attitude determination must be performed, which requires sensors for absolute or relative measurement. The broader integrated field that studies the combination of sensors, actuators and algorithms is called '' guidance, navigation and control'', which also involves non-attitude concepts, such as position determination and navigation. Motivation A spacecraft's attitude must typically be stabilized and controlled for a variety of reasons. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlantic, North Atlantic, the French West Indies, and List of islands of France, many islands in Oceania and the Indian Ocean, giving it Exclusive economic zone of France, one of the largest discontiguous exclusive economic zones in the world. Metropolitan France shares borders with Belgium and Luxembourg to the north; Germany to the northeast; Switzerland to the east; Italy and Monaco to the southeast; Andorra and Spain to the south; and a maritime border with the United Kingdom to the northwest. Its metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea. Its Regions of France, eighteen integral regions—five of which are overseas—span a combined area of and hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Russia
Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders of Russia, land borders with fourteen countries. Russia is the List of European countries by population, most populous country in Europe and the List of countries and dependencies by population, ninth-most populous country in the world. It is a Urbanization by sovereign state, highly urbanised country, with sixteen of its urban areas having more than 1 million inhabitants. Moscow, the List of metropolitan areas in Europe, most populous metropolitan area in Europe, is the capital and List of cities and towns in Russia by population, largest city of Russia, while Saint Petersburg is its second-largest city and Society and culture in Saint Petersburg, cultural centre. Human settlement on the territory of modern Russia dates back to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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China Manned Space Agency
China Manned Space Agency (abbreviated as CMSA) is a government agency of China responsible for the administration of China Manned Space Program, the Chinese human spaceflight program. The agency is under the Equipment Development Department of the Central Military Commission. Name The native name of the organization () was initially translated into English as "China Manned Space Engineering Office" as of 2014. However, ever since 2015, the name "China Manned Space Agency" has been used in official statements and news-releases till date. It is also the name displayed on the official website of China Manned Space Program. Functions China Manned Space Agency represents the Chinese government to take management responsibilities for the China Manned Space Program. CMSA's functions including development strategy, planning, overall technology, research and production, infrastructure construction, flight missions organization and implementation, utilization and promotion, int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Tianhe Core Module At Ground Test
Tianhe or Tian He, may refer to: Locations in China *Tianhe District (天河区), in Guangzhou, Guangdong *Wuhan Tianhe International Airport (武汉天河国际机场), Hubei * Tianhe, Guangxi (天河镇), a town in Luocheng Mulao Autonomous County, Guangxi Subdistricts * Tianhe Subdistrict, Weihai (田和街道), in Huancui District, Weihai, Shandong *Tianhe Subdistrict, Chaohu, Anhui * Tianhe Subdistrict, Wuhan, in Huangpi District, Wuhan, Hubei *Tianhe Subdistrict, Wenzhou, in Longwan District, Wenzhou, Zhejiang Other uses * Tianhe core module (天和, "Harmony of heaven"), the core module of the Chinese Tiangong Space Station * Tianhe-1 and Tianhe-2, supercomputers built by China * Duke Tai of Tian Qi (died 384 BC), personal name Tian He, ruler of Qi during the Warring States period * ''The Galaxy on Earth'', a 2014 Chinese film * HE Tian (Tian He), a fictional character from ''Unruly Qiao'' * Tianhe (天河, "heavenly river"), an archaic Chinese name for the Milky Way Ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Tianhe Core Module Mockup At CSTM 01
Tianhe or Tian He, may refer to: Locations in China *Tianhe District (天河区), in Guangzhou, Guangdong *Wuhan Tianhe International Airport (武汉天河国际机场), Hubei *Tianhe, Guangxi (天河镇), a town in Luocheng Mulao Autonomous County, Guangxi Subdistricts *Tianhe Subdistrict, Weihai (田和街道), in List of village-level divisions of Shandong, Huancui District, Weihai, Shandong *Tianhe Subdistrict, Chaohu, Anhui *Tianhe Subdistrict, Wuhan, in Huangpi District, Wuhan, Hubei *Tianhe Subdistrict, Wenzhou, in Longwan District, Wenzhou, Zhejiang Other uses * Tianhe core module (天和, "Harmony of heaven"), the core module of the Chinese Tiangong Space Station * Tianhe-1 and Tianhe-2, supercomputers built by China * Duke Tai of Tian Qi (died 384 BC), personal name Tian He, ruler of Qi during the Warring States period * ''The Galaxy on Earth'', a 2014 Chinese film * HE Tian (Tian He), a fictional character from ''Unruly Qiao'' * Tianhe (天河, "heavenly river"), an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Drag (physics)
In fluid dynamics, drag, sometimes referred to as fluid resistance, is a force acting opposite to the direction of motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers, two solid surfaces, or between a fluid and a solid surface. Drag forces tend to decrease fluid velocity relative to the solid object in the fluid's path. Unlike other resistive forces, drag force depends on velocity. Drag force is proportional to the relative velocity for low-speed flow and is proportional to the velocity squared for high-speed flow. This distinction between low and high-speed flow is measured by the Reynolds number. Drag is instantaneously related to vorticity dynamics through the Josephson-Anderson relation. Examples Examples of drag include: * Net force, Net Aerodynamic force, aerodynamic or Fluid dynamics, hydrodynamic force: Drag acting opposite to the direction of movement of a solid object such as cars, aircraft, and boat hulls. * Viscou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Tianzhou (spacecraft)
The Tianzhou () is a Chinese automated cargo spacecraft developed from China's first prototype space station Tiangong-1 to resupply its modular space station. It was first launched ( Tianzhou 1) on the Long March 7 rocket from Wenchang on April 20, 2017 and demonstrated autonomous propellant transfer ( space refueling). The first version of Tianzhou has a mass of 13,500 kg and can carry 6,500 kg of cargo. Tianzhou-6 is the first improved version of the spacecraft to be launched into orbit; it has a mass of about 14,000 kg and can transport 7,400 kg of cargo. Function Based on the Tiangong-1 space station, the Tianzhou functions as the main automated cargo spacecraft for the Tiangong space station. It has pressurized, semi-pressurized and unpressurized cargo capabilities, and is able to transport airtight cargo, large extravehicular payloads and experiment platforms. It was first launched on the new Long March 7 rocket from Wenchang on April 20, 2017. Name The China Man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Photovoltaic
Photovoltaics (PV) is the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic effect, a phenomenon studied in physics, photochemistry, and electrochemistry. The photovoltaic effect is commercially used for electricity generation and as photosensors. A photovoltaic system employs solar modules, each comprising a number of solar cells, which generate electrical power. PV installations may be ground-mounted, rooftop-mounted, wall-mounted or floating. The mount may be fixed or use a solar tracker to follow the sun across the sky. Photovoltaic technology helps to mitigate climate change because it emits much less carbon dioxide than fossil fuels. Solar PV has specific advantages as an energy source: once installed, its operation does not generate any pollution or any greenhouse gas emissions; it shows scalability in respect of power needs and silicon has large availability in the Earth's crust, although other materials required in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |