FIELD: cooling of the mixing head of the thermal engine combustion chamber. SUBSTANCE: the method consists in fuel feed to the duct at an angle to its axis. First fuel is fed to the cooling circuit of the thermal engine chamber, and then it is successively fed to the cooling jackets of the funnel, duct cylindrical part, manifold and fuel pipe-line, and further to the accumulator-heat exchanger, where it is heated and in a gaseous state through the inner cavities of the pipe-line, manifold and through the holes in the funnel walls is fed first to the duct, and then to the engine chamber. The device has a casing with a duct with radial holes in the walls for fuel feed, and the duct cylindrical part changes into a taper funnel connected to the engine chamber. Holes for fuel feed to the duct are made perpendicularly to the funnel generating lines, the duct cylindrical part section and the funnel are embraced by the fuel manifold with the pipe-line, which is connected to the heat exchanger. The engine cooling circuit and the cooling jackets of the funnel, cylindrical part of the oxidizer duct, manifold and fuel pipe-line are successively connected to one another and to the heat exchanger. EFFECT: enhanced efficiency of cooling of the thermal engine head both in operation without after-burning when one fuel is fed, and in operation with after-burning, when two fuel components are fed. 3 cl, 1 dwg
