Soyuz-5
ActiveRKK Energiya (RSC)
April 30, 2026
Description
Soyuz-5, also named Irtysh is a planned Russian rocket that is being developed by JSC SRC Progress, formerly within "Project Feniks." It will replace the capability of Zenit-2 and Proton Medium. It will initially be a two-stage rocket, but Soyuz 5 can be enhanced with an optional Blok DM-03 upper stage for geostationary missions. The rocket is loosely based on the Zenit launch vehicle with a RD-171MV engine on the 1st stage, enlarged to 4.1 m in diameter, while the 2nd stage is powered by 2 RD-0124MS engines derived from engines used on the 3rd stage of the Soyuz-2.1b. The Soyuz-5 can lift 17 tonnes to a Low Earth orbit.
Specifications
-
Minimum Stage
2 -
Max Stage
3 -
Length
65.258 m -
Diameter
4.1 m -
Fairing Diameter
5.2 m -
Launch Mass
525.0 T -
Thrust
7257.0 kN
Family
-
Name
Soyuz-5 -
Family
― -
Variant
― -
Alias
Irtysh -
Full Name
Soyuz-5
Payload Capacity
-
Launch Cost
― -
Low Earth Orbit
17000.0 kg -
Geostationary Transfer
Orbit
5000.0 kg -
Direct Geostationary
― -
Sun-Synchronous Capacity
―
RKK Energiya
Commercial
None
RSCSoyuz-5 | Demo Flight
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