Soyuz-5

Soyuz-5, also named Irtysh, formerly codenamed Fenix in Russian and Sunkar in Kazakh, is a planned Russian rocket that is being developed by RKTs Progress within the "Project Feniks". Initially it will replace the capability of Zenit, and in the future will serve as the base of a super heavy-lift launch vehicle rocket (Yenisei) to match the Energia/Buran capabilities. As of August 2023, Irtysh is expected to launch from Site 45, the ex Zenit launch site, at the Baikonur Cosmodrome in a partnership with the government of Kazakhstan, with a planned debut in December 2025.