Bottom unit for the combustion chamber of a liquid-fueled rocket

In a bottom unit for the combustion chamber of a liquid-fueled rocket, including (a) a bottom plate held on a swivel bearing, which can be tilted about a center of rotation with respect to the longitudinal direction of the liquid-fueled rocket and which has circumferentially distributed injection openings for two fuel components, and (b) two separate groups of fuel supply passages connected to the injection openings, the improvement wherein the swivel bearing includes a rigid thrust plate and a rigid hanger plate supported and fastened to one another by an internally located first annular body of rubber elastic material and a second annular body of rubber elastic material surrounding the first annular body and spaced radially therefrom, and wherein one group of supply passages is formed by the cavity surrounded by the first annular body and the other group of supply passages is formed by the space between the first annular body and the second annular body.