EntityQ219166· pop 14· linked from 300 articlesBlok DSign in to saveupper stage used on Soviet and later Russian expendable launch systemsConnectionsN1EntityProtonEntityliquid oxygenEntityS.P. Korolev Rocket and Space Corporation EnergiaEntitymultistage rocketEntityRP-1EntityZenitEntityBrizEntityRD-58EntityRussiaCountryRussianEntityMarsEntityVenusEntitySoviet UnionConceptInternational Standard Book NumberEntityWayback MachineEntityspacecraftEntitykeroseneEntityДEntitylow Earth orbitEntityCategoriesRocket engines using kerosene propellantRocket stagesSoviet inventions