Designed and developed by China Academy of Launch Vehicle Technology (CALT), Long March 5 (LM-5, CZ-5, or Changzheng 5) is China's next generation space launch vehicle family, which would include a range of classes of launch vehicles for different missions. The China Academy of Launch Vehicle Technology (CALT (中国运载火箭技术研究院 is the premier space launch vehicle manufacturer in China and one of the major launch service providers
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Development
Early reports stated that the CZ-5 project was announced in February 2001, with the initial development officially beginning in 2002. Year 2001 ( MMI) was a Common year starting on Monday according to the Gregorian calendar. See also 2002 (disambiguation Year 2002 ( MMII) was a Common year starting on Tuesday of the Gregorian calendar. China hoped that the CZ-5 would fulfill the requirement for large payload LEO and GEO missions for the next 20–30 years, with the first versions of the vehicle going into service by 2008. A Low Earth Orbit (LEO is generally defined as an Orbit within the locus extending from the Earth’s surface up to an altitude of 2000 km A geosynchronous orbit is an Orbit around the Earth with an Orbital period matching the Earth's sidereal rotation period 2008 ( MMVIII) is the current year in accordance with the Gregorian calendar, a Leap year that started on Tuesday of the Common Chief Designer for the CZ-5 was Long Lehao.
However, a new report on November 3, 2005, said that according to Wu Yansheng at the China Academy of Launch Vehicle Technology, the CZ-5 was still awaiting final approval and would take about six years for development, being ready in 2012. Events 644 - Umar ibn al-Khattab, the second Muslim Caliph, is killed by a Persian slave in Medina. Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar. 2012 ( MMXII) will be a Leap year starting on Sunday of the Gregorian calendar. [1] A further report on November 27, 2005, quoted the deputy commander of the manned space program saying that CZ-5 was still waiting for funding approval. Events 1095 - Pope Urban II declares the First Crusade at the Council of Clermont Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar. Finally, in 2007, developers at the Northeast China exhibition revealed that funding was finally granted, and the first rocket of the series was scheduled to launch by 2010. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Northeast China ( is a geographical region of China. It is separated from Russia largely by the Amur, Argun, and Ussuri rivers from For the film see 2010 The Year We Make Contact. For the book see 2010 Odyssey Two.
On October 30, 2007, ground was broken for the Long March 5 production plant at Tianjin. Events 637 - Antioch surrenders to the Muslim forces under Rashidun Caliphate after the Battle of Iron bridge. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. ( Postal map spelling: Tientsin) is the second largest city in northern coastal China. The rockets will be transported by sea from there to a new launch facility at Wenchang on Hainan Island. Wenchang ( Chinese: 文昌 is a County-level city in NE Hainan province China. Hainan ( POJ: Hai-lam Pinyin:, Jyutping: hoi2 naam4 literal meaning "South of the Sea" is the smallest province of the People's Because the launch facility will not be finished until 2012, first launch of the Long March 5 is not expected until 2013. [1]
Design
According to reports, the CZ-5 family will include three primary modular core stages 5. 2 m diameter (greatest). The overall length is 60. 5 meters and the launching weight over 800 tons. Boosters of various capabilities and with diameters ranging from 2. 25 meter and 3. 35 meters would be assembled from three modular core stages and strap-on stages. There would be a choice of engines with different liquid rocket propellants: 1,200 kN thrust LOX/kerosene engines or 500 kN thrust LOX/LH2 engines on first stage and boosters. The highest Specific impulse chemical Rockets use liquid propellants. Kerosene, sometimes spelled kerosine in scientific and industrial usage is a Combustible Hydrocarbon liquid Liquid hydrogen (LH2 or LH2 is the Liquid state of the element Hydrogen. The upper stage would use improved version of YF-75 engines. YF-75 (Rocket Engine The YF-75 is China's second generation of cryogenic gimballed engine using liquid hydrogen (LH2 fuel and liquid oxygen (LOX oxidizer
Engine development began in 2000–2001, with testing directed by the China National Space Administration (CNSA) commencing in 2005. The China National Space Administration ( CNSA) is the national space agency of the People's Republic of China responsible for the national space program Versions of both new engines: YF-100 and YF-77 had been successfully tested by mid-2007. YF-100 (Rocket Engine The YF-100 is currently China's most powerful LOX & Kerosene rocket engine The YF-77 is currently China's most powerful cryogenic rocket engine using liquid hydrogen (LH2 fuel and liquid oxygen (LOX oxidizer
The CZ-5 series will deliver 1. 5 t to 25 t payload to LEO, or 1. This article is about the tonne or metric ton For other tons see Ton. 5 t to 14 t payload to GTO (geosynchronous transfer orbit). This would replace the CZ-2, CZ-3, and CZ-4 series in service, as well as providing new capabilities which are not possessed by the current CZ family. A Long March rocket ( is any Rocket in a family of Expendable launch systems operated by the People's Republic of China. The heaviest configuration of the CZ-5 with a 5. 0 m diameter core stage and four 3. 35 m diameter strap-on boosters should be able to send a 25 t payload to low earth orbit.
The CZ-5 rockets will be comparable to the Delta IV Heavy, Atlas V, Ariane 5, Angara A5, Proton, and Falcon 9. The Delta IV is a family of Delta Rockets designed by Boeing 's Integrated Defense Systems division and built in United Launch Alliance's The Atlas V Rocket is an Expendable launch vehicle formerly built by Lockheed Martin and now built by the Lockheed Martin- Boeing joint venture Ariane 5 is a European Expendable launch The Angara rocket is a planned space-launch vehicle, designed to place heavy payloads into orbit The Proton rocket The Falcon 9 is an EELV class Launch vehicle planned by SpaceX and scheduled to launch in 2009
See also
References
- ^ New carrier rocket series to be built. For this article heavy lift launch systems are determined as being those capable of lifting at least 20000 kg to Low Earth orbit. China Daily.
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