11D428
Versions
This engine has been used with certain variations in manned Russian space program since the Salyut 6 in Soviet times. The three main versions are: 11D428: Delivered in 1970 for use in Salyut 1.

11D428

Section Title: Versions
Table Section Text: This engine has been used with certain variations in manned Russian space program since the Salyut 6 in Soviet times. The three main versions are: 11D428: Delivered in 1970 for use in Salyut 1.

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

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