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Chang Zheng 3B
Part of CZ Family
CZ-3B
CZ-3B
Chinese orbital launch vehicle. The Long March 3B was the most powerful Long March launch vehicle. It could inject a 5,000 kg payload into geosynchronous transfer orbit. The CZ-3B was developed on the basis of the CZ-3A, but had enlarged propellant tanks, larger fairing, and four boosters strapped onto the core stage. The CZ-3B boosters were identical to those of the CZ-3A.

AKA: Chang Zheng-3B;CZ-3B;Long March 3B. Status: Active. First Launch: 1996-02-14. Last Launch: 2017-04-12. Number: 23 . Payload: 11,200 kg (24,600 lb). Thrust: 2,980.00 kN (669,930 lbf). Gross mass: 425,800 kg (938,700 lb). Height: 54.80 m (179.70 ft). Diameter: 3.35 m (10.99 ft). Apogee: 200 km (120 mi).

12 stage vehicle consisting of 4 x CZ-3BE Booster + 1 x CZ-3BE Stage 1 + 1 x CZ-3B Stage 2 + 1 x CZ-3A Stage 3 + 4 x CZ-3BE Booster + 1 x CZ-3BE Stage 1 + 1 x CZ-3B Stage 2 + 1 x CZ-3A Stage 3 + 4 x CZ-3BE Booster + 1 x CZ-3BE Stage 1 + 1 x CZ-3B Stage 2

LEO Payload: 11,200 kg (24,600 lb) to a 200 km orbit at 28.50 degrees. Payload: 5,100 kg (11,200 lb) to a GTO. Launch Price $: 70.000 million in 1999 dollars.

Stage Data - CZ-3B

  • Stage 0. 4 x CZ-2E-0. Gross Mass: 41,000 kg (90,000 lb). Empty Mass: 3,200 kg (7,000 lb). Thrust (vac): 816.285 kN (183,508 lbf). Isp: 291 sec. Burn time: 128 sec. Isp(sl): 261 sec. Diameter: 2.25 m (7.38 ft). Span: 2.26 m (7.41 ft). Length: 15.33 m (50.29 ft). Propellants: N2O4/UDMH. No Engines: 1. Engine: YF-20B. Other designations: LB-40. Status: In Production.
  • Stage 1. 1 x CZ-3A-1. Gross Mass: 179,000 kg (394,000 lb). Empty Mass: 9,000 kg (19,800 lb). Thrust (vac): 3,265.143 kN (734,033 lbf). Isp: 289 sec. Burn time: 155 sec. Isp(sl): 259 sec. Diameter: 3.35 m (10.99 ft). Span: 7.00 m (22.90 ft). Length: 23.08 m (75.72 ft). Propellants: N2O4/UDMH. No Engines: 4. Engine: YF-20B. Other designations: L-180. Status: In Production.
  • Stage 2. 1 x CZ-2C/SD-2. Gross Mass: 55,000 kg (121,000 lb). Empty Mass: 5,000 kg (11,000 lb). Thrust (vac): 761.900 kN (171,282 lbf). Isp: 298 sec. Burn time: 190 sec. Isp(sl): 270 sec. Diameter: 3.35 m (10.99 ft). Span: 3.35 m (10.99 ft). Length: 10.00 m (32.00 ft). Propellants: N2O4/UDMH. No Engines: 1. Engine: YF-22A/23A. Other designations: L-35. Status: In Production. Comments: Stretched version of CZ-2C second stage. Empty mass estimated.
  • Stage 3. 1 x CZ-3A-3. Gross Mass: 21,000 kg (46,000 lb). Empty Mass: 2,800 kg (6,100 lb). Thrust (vac): 156.000 kN (35,070 lbf). Isp: 440 sec. Burn time: 470 sec. Diameter: 3.00 m (9.80 ft). Span: 3.00 m (9.80 ft). Length: 12.38 m (40.60 ft). Propellants: Lox/LH2. No Engines: 2. Engine: YF-75. Other designations: H-18. Status: In Production.


More at: Chang Zheng 3B.

Family: orbital launch vehicle. Country: China. Engines: YF-25/23, YF-20B, YF-75. Spacecraft: Apstar, Beidou 3, FS-1300, Spacebus 3000, AS 2100, Spacebus 4000, DFH-4. Projects: Chinastar, Intelsat, Sinosat. Launch Sites: Xichang, Xichang LC2. Stages: CZ H-18 stage, CZ-2C/SD-2, CZ-3A-1, LB-40. Agency: CALT.
Photo Gallery

LM-3B CutawayLM-3B Cutaway
Cutaway view of LM-3B launch vehicle.


CZ-3B failureCZ-3B failure



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