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Tianhe Core 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attitude Control (spacecraft)
Spacecraft attitude control is the process of controlling the orientation of a spacecraft (vehicle/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 sensors to measure vehicle orientation, actuators to apply the torques needed to orient the vehicle to a desired attitude, and algorithms to command the actuators based on (1) sensor measurements of the current attitude and (2) specification of a desired attitude. The integrated field that studies the combination of sensors, actuators and algorithms is called guidance, navigation and control (GNC). Overview A spacecraft's attitude must typically be stabilized and controlled for a variety of reasons. It is often needed so that the spacecraft high-gain antenna may be accurately pointed to Earth for communications, so that onboard experiments may accomplish precise pointing for accurate collection ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Docking And Berthing Of Spacecraft
Docking and berthing of spacecraft is the joining of two space vehicles. This connection can be temporary, or partially permanent such as for space station modules. ''Docking'' specifically refers to joining of two separate free-flying space vehicles. ''Berthing'' refers to mating operations where a passive module/vehicle is placed into the mating interface of another space vehicle by using a robotic arm. Because the modern process of un-berthing requires more crew labor and is time-consuming, berthing operations are unsuited for rapid crew evacuations in the event of an emergency. History Docking Spacecraft docking capability depends on space rendezvous, the ability of two spacecraft to find each other and station-keep in the same orbit. This was first developed by the United States for Project Gemini. It was planned for the crew of Gemini 6 to rendezvous and manually dock under the command of Wally Schirra, with an uncrewed Agena Target Vehicle in October 1965, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated between the Baltic and North seas to the north, and the Alps to the south; it covers an area of , with a population of almost 84 million within its 16 constituent states. Germany borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The nation's capital and most populous city is Berlin and its financial centre is Frankfurt; the largest urban area is the Ruhr. Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity. A region named Germania was documented before AD 100. In 962, the Kingdom of Germany formed the bulk of the Holy Roman Empire. During the 16th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pacific and Indian Oceans. Its Metropolitan France, metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean. Due to its several coastal territories, France has the largest exclusive economic zone in the world. France borders Belgium, Luxembourg, Germany, Switzerland, Monaco, Italy, Andorra, and Spain in continental Europe, as well as the Kingdom of the Netherlands, Netherlands, Suriname, and Brazil in the Americas via its overseas territories in French Guiana and Saint Martin (island), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russia
Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the world, with its internationally recognised territory covering , and encompassing one-eighth of Earth's inhabitable landmass. Russia extends across Time in Russia, eleven time zones and shares Borders of Russia, land boundaries with fourteen countries, more than List of countries and territories by land borders, any other country but China. It is the List of countries and dependencies by population, world's ninth-most populous country and List of European countries by population, Europe's most populous country, with a population of 146 million people. The country's capital and List of cities and towns in Russia by population, largest city is Moscow, the List of European cities by population within city limits, largest city entirely within E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China Manned Space Engineering Office
China Manned Space Agency or CMSA () is an agency of the People's Republic of China responsible for the administration of China Manned Space Program, the Chinese human spaceflight program. Name The native name of the organization (') was initially translated into English as ''China Manned Space Engineering Office (CMESO)'' as of 2014. However, ever since 2015, the name ''China Manned Space Agency (CMSA)'' 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, international cooperation and news-release, etc. Organizational structu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tianhe Final Art 310819
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drag (physics)
In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers (or surfaces) or between a fluid and a solid surface. Unlike other resistive forces, such as dry friction, which are nearly independent of velocity, the drag force depends on velocity. Drag force is proportional to the velocity for low-speed flow and the squared velocity for high speed flow, where the distinction between low and high speed is measured by the Reynolds number. Even though the ultimate cause of drag is viscous friction, turbulent drag is independent of viscosity. Drag forces always tend to decrease fluid velocity relative to the solid object in the fluid's path. Examples Examples of drag include the component of the net aerodynamic or hydrodynamic force acting opposite to the di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 12,910 kg and can carry 6,500 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 Manned Space Engineering Office opened a consultation for the naming of the prospective cargo ship on April 25, 2011. By May 20, it had received more than 50,000 sugges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 generates no pollution and no 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 PV system man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
