11D428
Versions
Table:
Engine
11D428A
11D428A-16
11D428AF-16

Development

1968–1974
1968–1977
1993–1997

Engine Type

Liquid pressure-fed rocket engine

Propellant

N2O4/UDMH with 1.85 O/F ratio

Thrust

130.5 kN (29,300 lbf)
129.16 kN (29,040 lbf)
123.5 kN (27,800 lbf)

isp

1:56 Exp. Nozzle:290 s (2.8 km/s)
1:150 Exp. Nozzle:302 s (2.96 km/s)
291 s (2.85 km/s)
306.2 s (3.003 km/s)

Nominal Inlet Pressure

1.77 MPa (257 psi)
1.76 MPa (255 psi)
1.47 MPa (213 psi)

Nozzle

1
1
1

Burn time

570s
2700s
50,000s

Ignitions

500,000

Ignition time

0.03 to 2000s

Mass

1.2 kg (2.6 lb)
1.5 kg (3.3 lb)
1.9 kg (4.2 lb)

Length

274 mm (10.8 in)
289.5 mm (11.40 in)
372 mm (14.6 in)

Diameter

98 mm (3.9 in)

157.4 mm (6.20 in)

Uses

Soyuz 7K-S, Soyuz-T and Soyuz-TM
Soyuz-TMA, Salyut-6, Salyut-7, Mir Core Module, Zvezda
Fobos-Grunt

References

[1][3][7][8][9]

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