Soyuz-5 | Demo Flight
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Instantaneous launch window.
Launch Window
April 3, 2026, 11 a.m. - April 3, 2026, 11 a.m.
Instantaneous launch window.
April 3, 2026, 11 a.m. - April 3, 2026, 11 a.m.
Demonstration Flight for Russia's new Soyuz-5 launch vehicle, with a mass simulator on board. Details TBD.
Reverted back to NET April 3.
NET April 4, to be confirmed.
Delayed to NET April 2.
Delayed to NET March 29, TBC.
NET March 27, to be confirmed.
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.
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