Orbital launch vehicle

Soyuz-5

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.

Flights flown1

Success rate100%1/1

Payload to LEO17,000kg

Maiden flight2026-04-30

Peak year20261 flight

Soyuz-5 is built by RKK Energiya of Russia. It first flew on 30 April 2026.

Flight record

1 records

100% success rate1 of 1 flown

First flight2026-04-30

Latest flight2026-04-30

Failures0

Consecutive successes1

Payload

Per mission profile

Low Earth orbit	17,000kg
Geostationary transfer orbit	5,000kg

Vehicle

Stages	3
Length	65.26m
Diameter	4.1m
Launch mass	525t
Liftoff thrust	7,257kN
Maiden flight	2026-04-30
Reusable	No

Pads used

1 pad

45/11

Orbits delivered

1 orbit

Suborbital1

Launch history

1 launches

Date	Mission	Pad	Orbit	Outcome
2026-04-30	Soyuz-5 \| Demo Flight	45/1	Suborbital	Success

Specifications from Launch Library 2 by The Space Devs, launch records from Space Index. Derived figures are computed here; see sources and method.

Further reading: Wikipedia · Operator page

Fewer than three recorded flights, so this page is marked noindex. It is here for completeness, not for search.