Soyuz-Fregat

 (Soyuz U/Fregat)

 Architecture
 
 First Stage (Booster Stages)
 
 Designation:
 Manufacturer:
 Length:
 Diameter:
 Gross Mass:
 Structure:
 Propellant Mass:
 Propellant:
 Primary Propulsion:
 Stage Thrust:
 Pitch/Yaw Control:
 Roll Control:
 Nominal Burn Time:
 Stage Shutdown:
 Stage Separation:

Blocks B, V, G & D
TsSKB-Progress
19.8 m
2.68 m (max.)
4 x 42,984 kg
Aluminium skin-stringer
4 x 39,200 kg
LOx/Kerosene
1 x RD-107 (each)
4 x 813 kN (SL)
Aerofins & verniers
Aerofins & verniers
120 sec.
Commanded
Aerodynamic separation
   Propulsion System

 Engine Designation:
 Manufacturer:
 Type:


 Thrust:

 Throttlability:
 Chamber Pressure:
 Specific Impulse:
 Mixture Ratio:
 Restartability:
 Expansion Ratio:

RD-107
NPO EnergoMash
Gas generator
4 chambers/1 turbopump + 2 verniers
813 kN (SL)
2 levels
58.5 bar
245 sec. (SL)
2.48
No
n.a.
 
 Second Stage (First Core Stage or Sustainer Stage)
 
 Designation:
 Manufacturer:
 Length:
 Diameter:
 Gross Mass:
 Structure:
 Propellant Mass:
 Propellant:
 Primary Propulsion:
 Stage Thrust:
 Pitch/Yaw Control:
 Roll Control:
 Nominal Burn Time:
 Stage Shutdown:
 Stage Separation:

Block A
TsSKB-Progress
28 m
2.15-2.95 m
101,925 kg
Aluminium skin-stringer
95,400 kg
LOx/Kerosene
1 x RD-108
779 kN (SL), 977 kN (vac)
Vernier engines
Vernier engines
285 sec.
Commanded
Pyrobolt and Block I ignition
   Propulsion System

 Engine Designation:
 Manufacturer:
 Type:


 Thrust:

 Throttlability:
 Chamber Pressure:
 Specific Impulse:
 Mixture Ratio:
 Restartability:
 Expansion Ratio:

RD-108
NPO EnergoMash
Gas generator
4 chambers/1 turbopump + 4 verniers
779 kN (SL), 977 kN (vac)
2 levels
52 bar
245 sec. (SL)
2.48
No
n.a.
 
 Third Stage (Second Core Stage)
 
 Designation:
 Manufacturer:
 Length:
 Diameter:
 Gross Mass:
 Structure:
 Propellant Mass:
 Propellant:
 Primary Propulsion:
 Stage Thrust:
 Pitch/Yaw Control:
 Roll Control:
 Nominal Burn Time:
 Stage Shutdown:
 Stage Separation:

Block I
TsSKB-Progress
6.7 m
2.66 m
23,755 kg
Aluminium skin-stringer
21,400 kg
LOx/Kerosene
RD-0110
298 kN (vac)
Vernier engines
Vernier engines
230 sec.
Commanded
Spring ejection
   Propulsion System

 Engine Designation:
 Manufacturer:
 Type:


 Thrust:

 Throttlability:
 Chamber Pressure:
 Specific Impulse:
 Mixture Ratio:
 Restartability:
 Expansion Ratio:

RD-0110
KB KhimAvtomatiki
Gas generator
4 chambers/1 turbopump + 4 verniers
298 kN (vac)
2 levels
70 bar
330 sec. (vac)
n.a.
No
n.a.
   
   Upper Stage
   
   Designation:
 Manufacturer:
 Height:
 Diameter:
 Gross Mass:
 Structure:
 Propellant Mass:
 Propellant:
 Primary Propulsion:
 Stage Thrust:
 Pitch/Yaw Control:
 Roll Control:
 Nominal Burn Time:
 Stage Shutdown:

Fregat (14S44)
NPO Lavochkin
1.5 m
3.3 m
Up to 6,535 kg
Aluminium skin-stringer
Up to 5,350 kg
UDMH/N2O4
S5.92
78 kN (vac)
Main engine/Thrusters
Thrusters
Up to 870 sec.
Commanded
   Propulsion System
   Engine Designation:
 Manufacturer:
 Type:
 Thrust:
 Throttlability:
 Chamber Pressure:
 Specific Impulse:
 Mixture Ratio:
 Restartability:
 Expansion Ratio:

S5.92
KB KhimMash
Turbopump fed
19.6 kN (vac)
75%-100%
0.1 bar
327 sec. (vac)
1.95 to 2.10
Up to 20 starts
n.a.
           
   Avionics
   Unmodified avionics on the Soyuz U vehicle with 2-axis guidance and individual telemetry transmitters in Block A and Block I stages. Digital avionics with autonomous inertial 3-axis guidance on the Fregat stage.

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