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From Wikipedia, the free encyclopedia

Long March 3A
CZ-3A.svg
Schematic of Long March 3A
FunctionCarrier rocket
ManufacturerCALT
Country of originChina
Cost per launchUS$70 million [1]
Size
Height52.52 metres (172.3 ft)[1]
Diameter3.35 metres (11.0 ft)[1]
Mass241,000 kilograms (531,000 lb)[1]
Stages3
Capacity
Payload to LEO
Mass8,500 kilograms (18,700 lb)[2][3]
Payload to GTO
Mass2,600 kilograms (5,700 lb)[4][2]
Payload to HCO
Mass1,600 kilograms (3,500 lb)[2][3]
Associated rockets
FamilyLong March
DerivativesLong March 3B
Long March 3C
Launch history
StatusActive
Launch sitesLA-2 & LA-3, XSLC
Total launches27[4]
Success(es)27[4]
First flight8 February 1994[4]
First stage
Length23.272 m
Diameter3.35 m
Propellant mass171,800 kg (378,800 lb)
Engines4 YF-21C
Thrust2,961.6 kN (665,800 lbf)
Specific impulse2,556.5 m/s (260.69 s)
Burn time148 s
FuelN2O4 / UDMH
Second stage
Length11.276 m
Diameter3.35 m
Propellant mass32,600 kg (71,900 lb)
Engines1 YF-24E
(1 x YF-22E (Main))
(4 x YF-23C (Vernier))
Thrust742 kN (167,000 lbf) (Main)
47.1 kN (10,600 lbf) (Vernier)
Specific impulse2,922.57 m/s (298.019 s) (Main)
2,910.5 m/s (296.79 s) (Vernier)
Burn time115 s
FuelN2O4 / UDMH
Third stage
Length12.375 m
Diameter3.0 m
Propellant mass18,200 kg (40,100 lb)
Engines2 YF-75 [5]
Thrust167.17 kN (37,580 lbf)
Specific impulse4,295 m/s (438.0 s)
Burn time475 s
FuelLH2 / LOX

The Long March 3A (Chinese: 长征三号甲火箭), also known as the Chang Zheng 3A, CZ-3A and LM-3A, is a Chinese orbital carrier rocket design. It is a 3-stage rocket, and is usually used to place communications satellites and Beidou navigation satellites into geosynchronous transfer orbits.

It has formed the basis of the Long March 3B, which is a heavier version with four liquid booster rockets.

Long March 3A launch
Long March 3A launch

Launches

Long March 3A rockets have been launched from Launch Areas 2 and 3 at the Xichang Satellite Launch Center.

List of launches

Flight number Date (UTC) Launch site Payload Orbit Result
1 February 8, 1994
08:34
LA-2, XSLC Shijian 4 HEO Success
2 November 29, 1994
17:02
LA-2, XSLC Dong Fang Hong 3 GTO Success
3 May 11, 1997
16:17
LA-2, XSLC ChinaSat 6 GTO Success
4 January 25, 2000
16:45
LA-2, XSLC ChinaSat 22 GTO Success
5 October 30, 2000
16:02
LA-2, XSLC Beidou-1A GTO Success
6 December 20, 2000
16:20
LA-2, XSLC Beidou-1B GTO Success
7 May 24, 2003
16:34
LA-2, XSLC Beidou-1C GTO Success
8 November 14, 2003
16:01
LA-2, XSLC ChinaSat 20 GTO Success
9 October 19, 2004
01:20
LA-2, XSLC Fengyun 2C GTO Success
10 September 12, 2006
16:02
LA-2, XSLC ChinaSat 22A GTO Success
11 December 8, 2006
00:53
LA-2, XSLC Fengyun 2D GTO Success
12 February 2, 2007
16:28
LA-2, XSLC Beidou-1D GTO Success
13 April 13, 2007
20:11
LA-3, XSLC Compass-M1 MEO Success
14 May 31, 2007
16:08
LA-3, XSLC SinoSat 3 GTO Success
15 October 24, 2007
10:05
LA-3, XSLC Chang'e 1 LTO Success
16 December 23, 2008
00:54
LA-3, XSLC Fengyun 2E GTO Success
17 July 31, 2010
21:30
LA-3, XSLC Compass-IGSO1 GTO Success
18 November 24, 2010
16:09
LA-3, XSLC ChinaSat 20A GTO Success
19 December 17, 2010
20:20
LA-3, XSLC Compass-IGSO2 GTO Success
20 April 9, 2011
20:47
LA-3, XSLC Compass-IGSO3 GTO Success
21 July 26, 2011
21:44
LA-3, XSLC Compass-IGSO4 GTO Success
22 December 1, 2011
21:07
LA-3, XSLC Compass-IGSO5 GTO Success
23 January 13, 2012
00:56
LA-3, XSLC Fengyun 2F GTO Success
24 December 31, 2014
01:02
LA-2, XSLC Fengyun 2G GTO Success
25 March 29, 2016
20:11
LA-2, XSLC Compass-IGSO6 GTO Success
26 June 5, 2018
13:07
LA-2, XSLC Fengyun 2H GTO Success
27 July 9, 2018
20:58
LA-2, XSLC Compass-IGSO7 GTO Success

Technical data

LM-3A is a 3-stage launch vehicle developed on the basis of LM-3 and LM-2C. Its third stage is powered by cryogenic propellants: liquid hydrogen and liquid oxygen. It is dedicated for launching spacecraft into GTO. Its launch capability for GTO mission is 2,600 kg. The fairing static envelope is 3m in diameter.[4]

References

  1. ^ a b c Mark Wade. "CZ-3A". Encyclopedia Astronautica. Archived from the original on 2009-06-11. Retrieved 2010-05-25.
  2. ^ a b c "LM-3A Series Launch Vehicle User's Manual - Issue 2011" (PDF). China Great Wall Industries Corporation. Retrieved 2015-08-09.
  3. ^ a b Gunter Krebs. "CZ-3A (Chang Zheng-3A)". Gunter's Space Page. Retrieved 2008-04-27.
  4. ^ a b c d e "LM-3A". China Great Wall Industry Corporation. Retrieved 2010-05-25.
  5. ^ "Long March 3C/E - Rockets". Spaceflight101.com. Retrieved 2016-11-25.


This page was last edited on 12 January 2021, at 03:56
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