Long March 3

Rendering of Long March 3
Function	Carrier rocket
Manufacturer	CALT
Country of origin	China
Size
Height	43.25 metres (141.9 ft)[1]
Diameter	3.35 metres (11.0 ft)[1]
Mass	204,000 kilograms (450,000 lb)[1]
Stages	3
Capacity
Payload to LEO
Mass	5,000 kilograms (11,000 lb)[2]
Payload to GTO
Mass	1,500 kilograms (3,300 lb)[2]
Associated rockets
Family	Long March
Derivative work	Long March 3A
Launch history
Status	Retired
Launch sites	LA-3, XSLC
Total launches	13
Success(es)	10
Failure(s)	2
Partial failure(s)	1
First flight	29 January 1984
Last flight	25 June 2000
First stage
Height	23.49 m
Diameter	3.35 m
Empty mass	9,378 kg (20,675 lb)
Gross mass	153,070 kg (337,460 lb)
Propellant mass	143,692 kg (316,787 lb)
Powered by	4 YF-21B
Maximum thrust	2,961.6 kN (665,800 lbf)
Specific impulse	2,556.2 m/s (260.66 s)
Burn time	121 s
Propellant	N2O4 / UDMH
Second stage
Height	9.47 m
Diameter	3.35 m
Empty mass	3,599 kg (7,934 lb)
Gross mass	39,440 kg (86,950 lb)
Propellant mass	35,841 kg (79,016 lb)
Powered by	1 YF-24D (1 x YF-22D (Main)) (4 x YF-23F (Vernier))
Maximum thrust	741.4 kN (166,700 lbf) (Main) 47.1 kN (10,600 lbf) (Vernier)
Specific impulse	2,922.4 m/s (298.00 s) (Main) 2,762 m/s (281.6 s) (Vernier)
Burn time	130 s
Propellant	N2O4 / UDMH
Third stage
Height	10.36 m
Diameter	2.25 m
Empty mass	1,965 kg (4,332 lb)
Gross mass	10,700 kg (23,600 lb)
Propellant mass	8,731 kg (19,249 lb)
Powered by	1 YF-73
Maximum thrust	44.43 kN (9,990 lbf)
Specific impulse	4,119 m/s (420.0 s)
Burn time	729 s
Propellant	LH2 / LOX
[edit on Wikidata]

The Long March 3 (Chinese: 长征三号火箭), also known as the Changzheng 3, CZ-3 and LM-3, was a Chinese orbital carrier rocket design. They were all launched from Launch Area 3 at the Xichang Satellite Launch Center. It was a three-stage rocket, and was mostly used to place DFH-2-class communications satellites into geosynchronous transfer orbits. It was complemented and later replaced by the more powerful Long March 3A, which has an improved third stage.