Fregat

Flight qualified in 2000, the Fregat upper stage is an autonomous and flexible upper stage that is designed to operate as an orbital vehicle. It extends the capability of the lower three stages of the Soyuz vehicle to provide access to a full range of orbits (MEO, SSO, GTO, escape). In order to provide the Fregat with high initial reliability and to speed up the development process, several flight-proven subsystems and components from previous spacecraft and rockets are incorporated into the upper stage.

The upper stage consists of 6 spherical tanks (4 for propellant, 2 for avionics) arrayed in a circle, with trusses passing through the tanks to provide structural support. The stage is independent from the lower three stages, having its own guidance, navigation, control, tracking, and telemetry systems.

The stage uses storable propellants (UDMH/NTO) and can be restarted up to 20 times in flight, thus enabling it to carry out complex mission profiles. It can provide the customer with 3-axis stabilization or spin-up of their spacecraft.

Fregat
Nation:	Russia
StageType / Application:	Upper stage
Contractors:
Configuratation:
Propulsion:	S5.98M
Fuel	UDMH / N2O4
Mass (total):
Mass (dry):
Mass (fuel):
Length:
Diameter:
Used with:	Soyuz-U Fregat, Soyuz-FG Fregat, Soyuz-2.1a Fregat, Soyuz-2.1b Fregat

Fregat-MT
Nation:	Russia
StageType / Application:	Upper stage
Contractors:
Configuratation:
Propulsion:	S5.98M
Fuel	UDMH / N2O4
Mass (total):
Mass (dry):
Mass (fuel):
Length:
Diameter:
Used with:	Soyuz-2.1b Fregat-MT

Fregat-SB
Nation:	Russia
StageType / Application:	Upper stage
Contractors:
Configuratation:
Propulsion:	S5.98M
Fuel	UDMH / N2O4
Mass (total):
Mass (dry):
Mass (fuel):
Length:
Diameter:
Used with:	Zenit-3F

No:     Type:                               Date:       LS          Fairing  Payload
-------------------------------------------------------------------------------------------------------------------------------------------
 1       1   Soyuz-U Fregat                 08.02.00    TB LC-31/6  S        IRDT 1 / IRDT-Fregat / Dummy Mass
 2       2   Soyuz-U Fregat                 20.03.00    TB LC-31/6  S        Dumsat
 3       3   Soyuz-U Fregat                 16.07.00    TB LC-31/6  S        Cluster FM6 / Cluster FM7
 4       4   Soyuz-U Fregat                 09.08.00    TB LC-31/6  S        Cluster FM5 / Cluster FM8
 5       5   Soyuz-FG Fregat                02.06.03    TB LC-31/6  S        Mars Express / Beagle 2
 6       6   Soyuz-FG Fregat                27.12.03    TB LC-31/6  S        Amos 2
 7       7   Soyuz-FG Fregat                13.08.05    TB LC-31/6  S        Galaxy 14
 8       8   Soyuz-FG Fregat                09.11.05    TB LC-31/6  S        Venus Express
 9       9   Soyuz-FG Fregat                28.12.05    TB LC-31/6  S        GIOVE A (GSTB v2A)
10      10   Soyuz-2-1a Fregat              19.10.06    TB LC-31/6  ST       METOP A
11      11   Soyuz-2-1a Fregat              24.12.06    Pl LC-43/4  SF       Meridian 1
12      12   Soyuz-2-1b Fregat              27.12.06    TB LC-31/6  SL       COROT
13      13   Soyuz-FG Fregat                29.05.07    TB LC-31/6  SL       Globalstar 65 / Globalstar 69 / Globalstar 71 / Globalstar 72 
14      14   Soyuz-FG Fregat                20.10.07    TB LC-31/6  SL       Globalstar 66 / Globalstar 67 / Globalstar 68 / Globalstar 70
15      15   Soyuz-FG Fregat                14.12.07    TB LC-31/6  SL       Radarsat 2
16      16   Soyuz-FG Fregat                26.04.08    TB LC-31/6  S        GIOVE B (GSTB v2B)
17      17   Soyuz-2.1a Fregat              21.05.09 P  Pl LC-43/4  SF       Meridian 2
18      18   Soyuz-2-1b Fregat              17.09.09    TB LC-31/6  ST       Meteor-M 1 / Sterkh 2 / Universitetsky 2 / UGATUSAT / BLITS / IRIS


TB	Tyuratam / Baikonur
Pl	Plesetsk
F	Failure
P	Partial Failure