Soyuz rocket uses 82% H2O2 for all first and second stage engines. Soyuz spacecraft uses H2O2 for capsule control during reentry. Soyuz spacecraft uses a vari

Soyuz rocket uses 82% H2O2 for all first and second stage engines. Soyuz spacecraft uses H2O2 for capsule control during reentry. Soyuz spacecraft uses a variant of hydrazine fuel for orbital maneuvers. All of this is true for all versions of Soyuz rocket (except Soyuz 2-1v) and Soyuz spacecraft, since 1950-s to today.