The KVTK (Russian: Кислородно-Водородный Тяжёлого Класса, romanized: Kislorodno-Vodorodnyy Tyazhologo Klassa, lit. 'Oxygen-Hydrogen Heavy Class') is a liquid oxygen/hydrogen upper stage for high energy orbits that is currently under development. The KVTK contains an RD-0146D engine and is designed for use on Angara rockets. KVTK would be the first hydrogen-powered upper stage for use on a Russian launch vehicle, although Khrunichev has previously produced a hydrogen-powered upper stage (KVD-1) for the Indian Space Research Organisation's GSLV. KVTK is designed to provide up to five ignitions, allowing for complex orbital maneuvering, and have an on-orbit lifespan of up to nine hours. KVTK would allow an increase in payload to GTO of 20-50% compared to the Angara A5's standard Briz-M upper stage, powered by UDMH and N2O4.
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This article is an automated import of the Wikipedia article "KVTK (rocket stage)", available at https://en.wikipedia.org/wiki/KVTK_(rocket_stage) . Text is licensed under CC BY-SA 4.0.