Demo Flight

Overview

Destination: Unknown
Mission: Test Flight

Unknown 45/1 Baikonur Cosmodrome, Republic of Kazakhstan

Demonstration Flight for Russia's new Soyuz-5 launch vehicle. Details TBD.

Updates

Cosmic_Penguin • Feb. 14, 2026, 12:17 a.m.

NET March 31.


Cosmic_Penguin • Dec. 12, 2025, 5:08 p.m.

Delayed till NET March.


Cosmic_Penguin • Dec. 11, 2025, 5:09 p.m.

Reverted back to NET December pending official updates.


Cosmic_Penguin • Sept. 5, 2025, 12:25 p.m.

Added launch.


Soyuz-5

Family:
Configuration:

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.

See Details
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

RKK Energiya

(RSC)

Successes: 0 Failures: 0 Pending: 1

Agency Type:

INFO WIKI

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