A4/V2 Engine.
The A4 rocket motor was the first design that successfully moved large volumes of fuel to the combustion chamber using gas-turbine driven fuel pumps. The gas-turbine was powered by hydrogen peroxide, of which 130 litres were contained in the small ellipsoidal tank. This liquid was expelled from the tank by compressed nitrogen from the bottles on the rack. The thrust frame was one of the key components in the engine assembly. The frame was able to successfully transmit 25-tons thrust to the rocket and withstood the punishment while being extremely light as well-
(Drawing based on original in Peenemünde archives)

Click here for a comparative photo of V2 engine

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