Long March 4B

Key figurescomparable across the catalogue

Mass

249,200 kg

Payload capacity

4,200 kg

Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.

As published by the supplier

Function

Medium-lift launch vehicle

Manufacturer

Shanghai Academy of Spaceflight Technology

Country of origin

China

Height

44.1 m (145 ft)

Diameter

3.35 m (11.0 ft)

Mass

249,200 kg (549,400 lb)

Stages

3

Payload to LEO mass

4,200 kg (9,300 lb)

Payload to SSO mass

2,800 kg (6,200 lb)

Payload to GTO mass

1,500 kg (3,300 lb)

Family

Long March

Derivative work

Long March 4C

Status

Active

Total launches

57

Success (es)

56

Failure

1

First flight

10 May 1999

Last flight

1 July 2026 (most recent)

First stage height

27.91 m (91.6 ft)

First stage diameter

3.35 m (11.0 ft)

First stage propellant mass

182,000 kg (401,000 lb)

First stage powered by

4 YF-21C

First stage maximum thrust

2,961.6 kN (665,800 lbf)

First stage specific impulse

2,550 m/s (8,400 ft/s)

First stage propellant

N2O4 / UDMH

Second stage height

10.9 m (36 ft)

Second stage diameter

3.35 m (11.0 ft)

Second stage propellant mass

52,700 kg (116,200 lb)

Second stage powered by

1 YF-24C (1 x YF-22C (Main)) (4 x YF-23C (Vernier))

Second stage maximum thrust (Main)

742.04 kN (166,820 lbf)

Second stage maximum thrust (Vernier)

47.1 kN (10,600 lbf)

Second stage specific impulse (Main)

2,942 m/s (9,650 ft/s)

Second stage specific impulse (Vernier)

2,834 m/s (9,300 ft/s)

Second stage propellant

N2O4 / UDMH

Third stage height

14.79 m (48.5 ft)

Third stage diameter

2.9 m (9 ft 6 in)

Third stage propellant mass

14,000 kg (31,000 lb)

Third stage powered by

2 YF-40

Third stage maximum thrust

100.85 kN (22,670 lbf)

Third stage specific impulse

2,971 m/s (9,750 ft/s)

Third stage propellant

N2O4 / UDMH

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