Function | Carrier rocket |
---|---|
Manufacturer | CALT |
Country of origin | China |
Size | |
Height | 49.70 metres (163.1 ft) [1] |
Diameter | 3.35 metres (11.0 ft) [1] |
Mass | 460,000 kilograms (1,010,000 lb) [1] |
Stages | 3 |
Capacity | |
Payload to LEO | |
Mass | 9,500 kilograms (20,900 lb) [1] |
Payload to Geosynchronous transfer orbit | |
Mass | 3,500 kilograms (7,700 lb) [1] |
Associated rockets | |
Family | Long March |
Derivative work | Long March 2F |
Launch history | |
Status | Retired |
Launch sites | XSLC,LA-2 |
Total launches | 7 |
Success(es) | 4 |
Failure(s) | 1 |
Partial failure(s) | 2 |
First flight | 16 July 1990 |
Last flight | 28 December 1995 |
Boosters | |
No. boosters | 4 |
Height | 15.33 metres (50.3 ft) |
Diameter | 2.25 metres (7 ft 5 in) |
Empty mass | 3,000 kilograms (6,600 lb) |
Gross mass | 40,754 kilograms (89,847 lb) |
Propellant mass | 37,754 kilograms (83,233 lb) |
Powered by | 1 YF-20B |
Maximum thrust | 740.4 kilonewtons (166,400 lbf) |
Specific impulse | 2,556.2 metres per second (260.66 s) |
Burn time | 127 seconds |
Propellant | N2O4 / UDMH |
First stage | |
Height | 28.47 metres (93.4 ft) |
Diameter | 3.35 metres (11.0 ft) |
Empty mass | 12,550 kilograms (27,670 lb) |
Gross mass | 198,825 kilograms (438,334 lb) |
Propellant mass | 186,280 kilograms (410,680 lb) |
Powered by | 4 YF-20B |
Maximum thrust | 2,961.6 kilonewtons (665,800 lbf) |
Specific impulse | 2,556.2 metres per second (260.66 s) |
Burn time | 160 seconds |
Propellant | N2O4 / UDMH |
Second stage | |
Height | 14.22 metres (46.7 ft) |
Diameter | 3.35 metres (11.0 ft) |
Empty mass | 4,955 kilograms (10,924 lb) |
Gross mass | 91,414 kilograms (201,533 lb) |
Propellant mass | 84,759 kilograms (186,862 lb) |
Powered by | 1 YF-24B (1 x YF-22B (main)) (4 x YF-23B (vernier)) |
Maximum thrust | 738.4 kilonewtons (166,000 lbf) (main) 47.1 kilonewtons (10,600 lbf) (vernier) |
Specific impulse | 2,922.4 metres per second (298.00 s) (main) 2,834.1 metres per second (289.00 s) (vernier) |
Burn time | 301 seconds |
Propellant | N2O4 / UDMH |
Third stage –EPKM (optional) | |
Height | 2.936 metres (9 ft 7.6 in) |
Diameter | 1.7 metres (5 ft 7 in) |
Empty mass | 557 kilograms (1,228 lb) |
Gross mass | 6,001 kilograms (13,230 lb) |
Propellant mass | 5,444 kilograms (12,002 lb) |
Powered by | 1 FG-46 |
Maximum thrust | 190 kilonewtons (43,000 lbf) |
Specific impulse | 2,870 metres per second (293 s) |
Burn time | 87 seconds |
Propellant | HTPB |
The Long March 2E,also known as the Chang Zheng 2E,CZ-2E and LM-2E,was a Chinese orbital carrier rocket from the Long March 2 family. The Long March 2E was a three-stage carrier rocket that was designed to launch commercial communications satellites into geosynchronous transfer orbit. Launches took place from launch complex 2 at the Xichang Satellite Launch Center.
The Long March 2E made its maiden flight on 16 July 1990. However,the rocket had compatibility flaws with the American-made satellites that caused one launch failures and one partial failure in just 7 missions. The rocket was retired on 28 December 1995 in favor of the Long March 3B. The Long March 2E forms the basis of the Long March 2F,used to launch crewed Shenzhou missions. The booster rockets have also been used on the Long March 3B and Long March 3C.
The Long March 2E made its maiden flight on 16 July 1990 and made 7 launches in total. All of the failures were caused by excessive vibration.
The first partial failure occurred on 21 December 1992,during the launch of the original Optus B2. Windshear caused the payload fairing to implode 45 seconds into flight,destroying the satellite. The rocket continued to orbit,deploying what was left of the upper stage and payload into a low Earth orbit. [2] U.S. satellite manufacturer Hughes recommended reinforcement of the fairing. However,China chose not to follow the recommendation and instead added more rivets for the successful launch of Optus B3. [3]
The second failure occurred on 25 January 1995 during the launch of Apstar 2,when the rocket exploded 50 seconds after liftoff. Based on readings from instrumentation that it added to the satellite,Hughes concluded that wind shear had again caused the collapse of a structurally-deficient fairing. However,Liu Jiyuan,the Director of the China Aerospace Corporation,claimed that the rocket-satellite interface was at fault and threatened never to do business with Hughes again. The two sides finally agreed that the interface and the fairing would both be redesigned. [3] [4]
The information provided by Hughes caused great political controversy in the United States,since it could be used to improve Chinese rockets and ballistic missiles. In 1998,the U.S. Congress classified satellite technology as a munition and gave control over export licenses to the State Department under ITAR. [5] No export licenses to China have been approved since 1998,and an official at the United States Bureau of Industry and Security emphasized in 2016 that "no U.S.-origin content,regardless of significance,regardless of whether it's incorporated into a foreign-made item,can go to China". [6]
The return-to-flight payload,AsiaSat 2,had to pay a 27% premium for satellite insurance instead of the usual 17–20%. Although the satellite was delivered to the correct orbit,the launch was a partial failure. Excessive forces during the launch caused a misalignment of the antenna feed horns on the Ku-band transponders,reducing the satellite's coverage area. [3] AsiaSat filed a satellite insurance claim for US$58 million. [7]
After one more successful launch,the Long March 2E was retired at the end of 1995.
Flight number | Date (UTC) | Launch site | Upper stage | Payload | Orbit | Result |
---|---|---|---|---|---|---|
1 | 16 July 1990 00:40:00 | XSLC, LA-2 | SPTS-M14 | Optus-B mass simulator Badr-1 | GTO LEO | Success |
2 | 13 August 1992 23:00:00 | XSLC, LA-2 | Star-63F | Optus-B1 | GTO | Success [note] |
3 | 21 December 1992 11:21:00 | XSLC, LA-2 | Star-63F | Optus-B2 | GTO | Partial Failure |
4 | 27 August 1994 23:10:00 | XSLC, LA-2 | Star-63F | Optus-B3 | GTO | Success |
5 | 25 January 1995 22:40:00 | XSLC, LA-2 | Star-63F | Apstar 2 | GTO | Failure |
6 | 28 November 1995 11:30:00 | XSLC, LA-2 | EPKM | AsiaSat 2 | GTO | Partial Failure [note] |
7 | 28 December 1995 11:50:00 | XSLC, LA-2 | EPKM | Echostar 1 | GTO | Success |
^note Original launch attempt on 22 March 1992 at 10:40 UTC was aborted after engine ignition due to one booster engine igniter shutdown after metal contaminants caused electric arcing. Launch vehicle suffered damage and had to be replaced.
^note Excessive forces during the launch caused a misalignment of the antenna feed horns on the Ku-band transponders, reducing the satellite's coverage area.
The Long March rockets are a family of expendable launch system rockets operated by the China Aerospace Science and Technology Corporation. The rockets are named after the Chinese Red Army's 1934–35 Long March military retreat during the Chinese Civil War.
The Long March 2F, also known as the CZ-2F, LM-2F and Shenjian, is a Chinese orbital carrier rocket, part of the Long March 2 rocket family. Designed to launch crewed Shenzhou spacecraft, the Long March 2F is a human-rated two-stage version of the Long March 2E rocket, which in turn was based on the Long March 2C launch vehicle. It is launched from complex SLS at the Jiuquan Satellite Launch Center. The Long March 2F made its maiden flight on 19 November 1999, with the Shenzhou 1 spacecraft. After the flight of Shenzhou 3, CPC General Secretary and President Jiang Zemin named the rocket "Shenjian", meaning "Divine Arrow".
The Indian National Satellite System or INSAT, is a series of multipurpose geostationary satellites launched by the Indian Space Research Organisation (ISRO) to satisfy telecommunications, broadcasting, meteorology, and search and rescue operations. Commissioned in 1983, INSAT is the largest domestic communication system in the Indo-Pacific Region. It is a joint venture of the Department of Space, Department of Telecommunications, India Meteorological Department, All India Radio and Doordarshan. The overall coordination and management of INSAT system rests with the Secretary-level INSAT Coordination Committee.
Apstar 6 is a communications satellite built by Alcatel Space, a subsidiary of Alcatel, and was boosted into orbit on April 12, 2005, by Long March 3B launcher from Xichang Satellite Launch Center in China. It provides APT Satellite, a satellite operator in the Asia Pacific region, with broadband media and television services. It is fitted with 38 C-band transponders and 12 Ku band transponders. China is covered with a dedicated high power Ku band beam for broadband multimedia transmission. It is the second model of the Spacebus 4000. The transponders have a reduced C-band receiving dish over a wide footprint, which extends across India, China and Australia.
This is a list of the satellites operated by Optus, an Australian telecommunications company. The satellite communications facility is located at Belrose on Sydney's Northern Beaches. Optus' satellites are divided into 4 classes A, B, C and D. As of April 2014 it owns and operates Optus B3, Optus C1, Optus D1, Optus D2 and Optus D3. Optus A1, Optus A2, Optus A3 and Optus B1 satellites have been retired. Optus has the largest network of satellites in Australia and New Zealand.
The Anik satellites are a series of geostationary communications satellites launched for Telesat Canada for television, voice and data in Canada and other parts of the world, from 1972 through 2013. Some of the later satellites in the series remain operational in orbit, while others have been retired to a graveyard orbit. The naming of the satellite was determined by a national contest, and was won by Julie-Frances Czapla of Saint-Léonard, Québec. In Inuktitut, Anik means "brother".
Long March 2 rocket family or Chang Zheng 2 rocket family as in Chinese pinyin is an expendable launch system operated by the People's Republic of China. The rockets use the abbreviations LM-2 family for export, and CZ-2 family within China, as "Chang Zheng" means "Long March" in Chinese pinyin. They are part of the larger Long March rocket family. Development and design falls mostly under the auspices of the China Academy of Launch Vehicle Technology (CALT).
Intelsat 708 was a telecommunications satellite built by the American company Space Systems/Loral for Intelsat. It was destroyed on 15 February 1996 when the Long March 3B launch vehicle failed while being launched from the Xichang Satellite Launch Center in China. The launch vehicle veered off course immediately after liftoff and struck a nearby village, killing at least six people.
A payload fairing is a nose cone used to protect a spacecraft payload against the impact of dynamic pressure and aerodynamic heating during launch through an atmosphere. An additional function on some flights is to maintain the cleanroom environment for precision instruments. Once outside the atmosphere the fairing is jettisoned, exposing the payload to outer space.
AsiaSat 2 was a Hong Kong communications satellite, which was owned, and was initially operated, by the Hong Kong–based Asia Satellite Telecommunications Company. It was positioned in geostationary orbit at a longitude of 17° East of the Greenwich Meridian, on lease to Spacecom. It spent most of its operational life at 100.5° East, from where it was used to provide fixed satellite services, including broadcasting, audio and data transmission, to Asia and the Pacific Ocean.
NigComSat-1 was a Nigerian communication satellite. The initial contract to build the satellite was signed in 2004. It was launched in China by Nasrda and became the third African geosynchronous communication satellite, when it was launched at 16:01 UTC on 13 May 2007, aboard a Chinese Long March 3B carrier rocket, from the Xichang Satellite Launch Centre in China. The spacecraft was operated by Nigerian Communications Satellite Ltd (NIGCOMSAT). On November 11, 2008, NigComSat-1 failed in orbit after running out of power due to an anomaly in its solar array.
ChinaSat is the brand name of communications satellites operated by China Satellite Communications.
The Long March 3B, also known as the CZ-3B and LM-3B, is a Chinese orbital launch vehicle. Introduced in 1996, it is launched from Launch Area 2 and 3 at the Xichang Satellite Launch Center in Sichuan. A three-stage rocket with four strap-on liquid rocket boosters, it is the heaviest variant of the Long March 3 rocket family, and is mainly used to place communications satellites and navigation satellites into geosynchronous orbits.
The Long March 3C, also known as the Changzheng 3C, CZ-3C and LM-3C, is a Chinese orbital launch vehicle. It is launched from Launch Complex 2 and 3 at the Xichang Satellite Launch Center (XSLC). A three-stage rocket with two strapon liquid rocket boosters, it is a member of the Long March 3 rocket family, and was derived from the Long March 3B. It was designed to fill a gap in payload capacities between the Long March 3A and 3B.
The Long March 4A, also known as the Changzheng 4A, CZ-4A and LM-4A, sometimes misidentified as the Long March 4 due to the lack of any such designated rocket, was a Chinese orbital carrier rocket. It was launched from Launch Area 7 at the Taiyuan Satellite Launch Center. It was a three-stage rocket, used for two launches in 1988 and 1990. On its maiden flight, on 6 September 1988, it placed the FY-1A weather satellite into orbit. On its second, and final, flight it launched another weather satellite, FY-1B.
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