S5.80
Versions

S5.80

Section Title: Versions
Table Section Text: None

Engine (SKD)	11D426	S5.79	S5.80

Propulsion module	KTDU-426	KRD-79	KTDU-80

Development	1968–1974	1968-1977	1977–1986

Engine Type	Liquid pressure-fed rocket engine

Module	integrated spacecraft propulsion, pressurization and attitude control system	main propulsion engine	integrated spacecraft propulsion, pressurization and attitude control system

Propellant	N2O4/UDMH with 1.85 O/F ratio

Thrust (SKD)	3.09 kN (690 lbf)	3.09 kN (690 lbf)	2.95 kN (660 lbf)

isp	292 s (2.86 km/s)	293.7 s (2.880 km/s)	302 s (2.96 km/s)

Chamber Pressure	0.88 MPa (128 psi)	1.75 MPa (254 psi)	0.88 MPa (128 psi)

Nozzle	1	1	1

Expansion Ratio	153.8

Burn time	570s	2700s	890s

Ignitions	40	70	30

Mass	270 kg (600 lb)	38.5 kg (85 lb)	310 kg (680 lb)

Length	1,200 mm (47 in)	840 mm (33 in)	1,204 mm (47.4 in)

Diameter	2,100 mm (83 in)	550 mm (22 in)	2,100 mm (83 in)

Uses	Soyuz-T	Salyut-6, Salyut-7, Mir Core Module, Zvezda	Soyuz-TM Soyuz-TM Soyuz-TMA Soyuz-TMA-M Progress-M Pirs Poisk

References

Sentence(s)

S5.80 is used on the KTDU-80 propulsion module that has Soyuz-TM and Progress-M, and has slightly reduced thrust.
S5.80 is an evolution of the 11D426 and S5.79 and it is used on the KTDU-80 propulsion module which uses all Soyuz since Soyuz-TM and Progress-M and it has slightly reduced thrust.
The S5.80 is an evolution of the 11D426 and S5.79, which is used on the KTDU-80 propulsion module that has been used by all Soyuz-TM and Progress-M and has slightly reduced thrust over the 11D426.

final_sentence: S5.80 is used on the KTDU-80 propulsion module that has Soyuz-TM and Progress-M, and has slightly reduced thrust.
final_sentence: S5.80 is an evolution of the 11D426 and S5.79 and it is used on the KTDU-80 propulsion module which uses all Soyuz since Soyuz-TM and Progress-M and it has slightly reduced thrust.
final_sentence: The S5.80 is an evolution of the 11D426 and S5.79, which is used on the KTDU-80 propulsion module that has been used by all Soyuz-TM and Progress-M and has slightly reduced thrust over the 11D426.