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China's Spaceplane Program
Project 921-3 is a crewed spacecraft sub-system of Project 921. The term 921-3 is often used for the Chinese spaceplane program. History The Chinese National Manned Space Program was given the designation of Project 921 in 1992. This broad project was divided into three phases: 921-1 to launch a crewed mission by 2002 in a craft that became the Shenzhou, the Project 921-2 temporary space station by 2010, and the 921-3 permanent space station by 2020. Care must be taken not to confuse the three phases of Project 921 with its seven sub-systems (921-1, 921-2 ... 921-7). Early planning of Project 921 included six different proposals for a crewed space transportation system. Five of these proposals were of a space-Earth transportation system using a delta winged orbiter. By 1990, the proposal for the Soyuz-like capsule Shenzhou had won out. Some small models for a spaceplane were made public, but the concept was rejected in favor of a Soyuz-like capsule which became Shenzh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Project 921
The China Manned Space Program (CMS; ), also known as Project 921 () is a space program developed by the People's Republic of China and run by the China Manned Space Agency (CMSA) under the Equipment Development Department of the Central Military Commission, designed to develop and enhance human spaceflight capabilities for China. It was approved on 21 September 1992 and has been in operation ever since. The ''CMS'' commander and director are currently Xu Xueqiang and Zhou Jianping respectively; the latter has held this position since 2006, after taking over from Wang Yongzhi, who served as the first director from 1992 to 2006. As one of the most complex programs within the Chinese space agency, CMS was split into "three steps": # Crewed spacecraft launch and return. # Space laboratory (with capabilities of extravehicular activities), spacecraft rendezvous and docking procedures. # Long-term modular space station. On 29 November 2022, with the launch and docking of '' Shenzh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-temperature Superconductivity
High-temperature superconductivity (high-c or HTS) is superconductivity in materials with a critical temperature (the temperature below which the material behaves as a superconductor) above , the boiling point of liquid nitrogen. They are "high-temperature" only relative to previously known superconductors, which function only closer to absolute zero. The first high-temperature superconductor was discovered in 1986 by IBM researchers Georg Bednorz and K. Alex Müller. Although the critical temperature is around , this material was modified by Ching-Wu Chu to make the first high-temperature superconductor with critical temperature . Bednorz and Müller were awarded the Nobel Prize in Physics in 1987 "for their important break-through in the discovery of superconductivity in ceramic materials". Most high-c materials are type-II superconductors. The major advantage of high-temperature superconductors is that they can be cooled using liquid nitrogen, in contrast to previously known s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spaceplanes
A spaceplane is a vehicle that can fly and glide as an aircraft in Earth's atmosphere and function as a spacecraft in outer space. To do so, spaceplanes must incorporate features of both aircraft and spacecraft. Orbital spaceplanes tend to be more similar to conventional spacecraft, while sub-orbital spaceplanes tend to be more similar to fixed-wing aircraft. All spaceplanes as of 2024 have been rocket-powered for takeoff and climb, but have then landed as unpowered gliders. Four examples of spaceplanes have successfully launched to orbit, reentered Earth's atmosphere, and landed: the U.S. Space Shuttle, Russian Buran, U.S. X-37, and the Chinese Shenlong. Another, Dream Chaser, is under development in the U.S. As of 2024 all past and current orbital spaceplanes launch vertically; some are carried as a payload in a conventional fairing, while the Space Shuttle used its own engines with the assistance of boosters and an external tank. Orbital spaceflight takes place ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crewed Spacecraft
This is a list of all crewed spacecraft types that have flown into space, including sub-orbital flights above 80 km, space stations that have been visited by at least one crew member, and spacecraft currently planned to operate with crews in the future. It does not contain spacecraft that have only flown uncrewed and have retired from service, even if they were designed for crewed flight, such as Buran, or crewed flights by spacecraft below 80 km. There is some debate concerning the height at which space is reached (the Karman Line): the Fédération Aéronautique Internationale (FAI) recognizes 100 km, while NASA and the USAF recognize this as 50 miles (approx 80 km). Since the first crewed spaceflight of Vostok 1 in 1961 there have been 13 types of spacecraft that have made crewed flights into space – nine American, three Russian, and one Chinese. There are currently five operational crewed spacecraft, which form the first part of the list below; the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China Aerospace Science And Industry Corporation
The China Aerospace Science and Industry Corporation (CASIC) is a Chinese state-owned enterprise that designs, develops and manufactures a range of spacecraft, launch vehicles, strategic and tactical missile systems, and ground equipment. CASIC is the largest maker of missiles in China. History First established as the 5th Academy of the Ministry of Defense in October 1956, it went through numerous name changes including the Ministry of the 7th Machinery Industry, the Ministry of Aerospace Industry, the Ministry of Aviation and Aerospace Industry, China Aerospace Corporation, China Aerospace Machinery and Electronics Corporation in July 1999, and finally the present name China Aerospace Science & Industry Corporation in July 2001. CASIC owns seven academies, two scientific research and development bases, six public listed companies, and over 620 other companies and institutes scattered nationwide, with more than 145,987 employees. From 2011 onwards, CASIC has supplied Nort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA X-43
The NASA X-43 was an experimental unmanned hypersonic aircraft with multiple planned scale variations meant to test various aspects of hypersonic flight. It was part of the X-plane series and specifically of NASA's Hyper-X program developed in the late 1990s. It set several airspeed records for jet aircraft. The X-43 is the fastest jet-powered aircraft on record at approximately Mach 9.6.Thompson, Elvia, Keith Henry and Leslie Williams"Faster Than a Speeding Bullet: Guinness Recognizes NASA Scramjet." ''NASA.'' Retrieved: August 1, 2011. A winged booster rocket with the X-43 placed on top, called a "stack", was drop launched from a Boeing B-52 Stratofortress. After the booster rocket (a modified first stage of the Pegasus rocket) brought the stack to the target speed and altitude, it was discarded, and the X-43 flew free using its own engine, a scramjet. The first plane in the series, the X-43A, was a single-use vehicle, of which three were built. The first X-43A was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Key Laboratory Of High-temperature Gas Dynamics
Key, Keys, The Key or The Keys may refer to: Common uses * Key (cryptography), a piece of information needed to encode or decode a message * Key (instrument), a component of a musical instrument * Key (lock), a device used to operate a lock * Key (map), a guide to a map's symbology * Key (music), the scale of a piece of music * Key on a typewriter or computer keyboard Arts, entertainment and media Films * ''The Key'' (1934 film), an American pre-Code film * ''The Key'' (1958 film), starring William Holden and Sophia Loren * ''The Key'', also known as '' Odd Obsession'', a 1959 Japanese comedy drama * ''The Key'' (1961 film), a Soviet animated feature * ''The Key'' (1965 film), a Croatian omnibus film * ''The Key'' (1971 film), a Czechoslovak drama * ''The Key'' (1983 film), an Italian erotic film * ''The Key'' (1987 film), an Iranian film * ''The Key'' (2007 film), a French thriller film * ''Key'' (film), a 2011 Telugu-language psychological thriller * ''The Key' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Academy Of Sciences
The Chinese Academy of Sciences (CAS; ) is the national academy for natural sciences and the highest consultancy for science and technology of the People's Republic of China. It is the world's largest research organization, with 106 research institutes, 2 universities, 71,300 full-time employees, and 79 thousand graduate students. The Chinese Academy of Sciences has historical origins in the Academia Sinica during the Republic of China (1912–49), Republican era and was formerly also known by that name until the 1980s. The academy functions as the national scientific think tank and academic governing body, providing advisory and appraisal services on issues stemming from the national economy, Social change, social development, and science and technology progress. It is headquartered in Beijing, with affiliate institutes throughout China. It has also created hundreds of commercial enterprises, Lenovo being one of the most famous. The academy also runs the University of Scienc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind Tunnel
A wind tunnel is "an apparatus for producing a controlled stream of air for conducting aerodynamic experiments". The experiment is conducted in the test section of the wind tunnel and a complete tunnel configuration includes air ducting to and from the test section and a device for keeping the air in motion, such as a fan. Wind tunnel uses include assessing the effects of air on an aircraft in flight or a ground vehicle moving on land, and measuring the effect of wind on Building, buildings and bridges. Wind tunnel test sections range in size from less than a foot across, to over , and with air speeds from a light breeze to hypersonic. The earliest wind tunnels were invented towards the end of the 19th century, in the early days of aeronautical research, as part of the effort to develop heavier-than-air flying machines. The wind tunnel reversed the usual situation. Instead of the air standing still and an aircraft moving, an object would be held still and the air moved around it. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Standard Mandarin
Standard Chinese ( zh, s=现代标准汉语, t=現代標準漢語, p=Xiàndài biāozhǔn hànyǔ, l=modern standard Han speech) is a modern Standard language, standard form of Mandarin Chinese that was first codified during the Republic of China (1912–1949), republican era (1912–1949). It is designated as the Languages of China, official language of mainland China and a major language in the United Nations languages, United Nations, Languages of Singapore, Singapore, and Languages of Taiwan, Taiwan. It is largely based on the Beijing dialect. Standard Chinese is a pluricentric language with local standards in mainland China, Taiwan and Singapore that mainly differ in their lexicon. Hong Kong written Chinese, used for formal written communication in Hong Kong and Macau, is a form of Standard Chinese that is read aloud with the Cantonese reading of characters. Like other Sinitic languages, Standard Chinese is a tone (linguistics), tonal language with topic-prominent langua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
