Long March 3A

Rendering of Long March 3A
Function	Carrier rocket
Manufacturer	CALT
Country of origin	China
Cost per launch	US$70 million[1]
Size
Height	52.52 metres (172.3 ft)[2]
Diameter	3.35 metres (11.0 ft)[2]
Mass	241,000 kilograms (531,000 lb)[2]
Stages	3
Capacity
Payload to LEO
Mass	8,500 kilograms (18,700 lb)[3][4]
Payload to GTO
Mass	2,600 kilograms (5,700 lb)[5][3]
Payload to HCO
Mass	1,600 kilograms (3,500 lb)[3][4]
Associated rockets
Family	Long March
Derivative work	Long March 3B Long March 3C
Launch history
Status	Active
Launch sites	LA-2 & LA-3, XSLC
Total launches	27[5]
Success(es)	27[5]
First flight	8 February 1994[5]
Last flight	9 July 2018
First stage
Height	23.272 m
Diameter	3.35 m
Propellant mass	171,800 kg (378,800 lb)
Powered by	4 YF-21C
Maximum thrust	2,961.6 kN (665,800 lbf)
Specific impulse	2,556.5 m/s (260.69 s)
Burn time	148 s
Propellant	N2O4 / UDMH
Second stage
Height	11.276 m
Diameter	3.35 m
Propellant mass	32,600 kg (71,900 lb)
Powered by	1 YF-24E (1 x YF-22E (Main)) (4 x YF-23C (Vernier))
Maximum thrust	742 kN (167,000 lbf) (Main) 47.1 kN (10,600 lbf) (Vernier)
Specific impulse	2,922.57 m/s (298.019 s) (Main) 2,910.5 m/s (296.79 s) (Vernier)
Burn time	115 s
Propellant	N2O4 / UDMH
Third stage
Height	12.375 m
Diameter	3.0 m
Propellant mass	18,200 kg (40,100 lb)
Powered by	2 YF-75[6]
Maximum thrust	167.17 kN (37,580 lbf)
Specific impulse	4,295 m/s (438.0 s)
Burn time	475 s
Propellant	LH2 / LOX
[edit on Wikidata]

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.