RLA-300

Glushko LOx/Kerosene rocket engine. Design 1974. Proposed for the RLA series launch vehicles and the UR-700M Mars booster. Following rejection of RLA, design 'down-sized' to 200 metric tons thrust for Energia and Zenit.

In 1972 to 1974 Glushko proposed lox/kerosene engines for the RLA series launch vehicles and the UR-700M Mars booster with a lift-off thrust of 300 metric tons per chamber. The UR-700M version would use two chambers for a total thrust of 600 metric tons. Following rejection of the RLA and the adoption of the Energia design, this chamber design was 'down-sized' to 200 metric tons thrust for Energia and Vulkan.