SOLID-FUEL RAMJET ENGINE AND METHOD FOR CONTROLLING THRUST OF A SOLID-FUEL RAMJET ENGINE Russian patent published in 2023 - IPC F02K7/10 

FIELD: ramjet engines.

SUBSTANCE: solid-fuel ramjet engine contains an air intake, a housing with a solid fuel charge, a combustion chamber, an afterburner and a supersonic nozzle. The air intake is directly connected to the charge. The combustion chamber is coupled with an afterburner and a nozzle. The combustion chamber is formed by the combustion surface of the charge congruent to each other and the surface of the movable part of the telescopic needle, the afterburning chamber is made annular with respect to the surface of the needle. To meet the standard gap requirements, the needle is equipped with a control mechanism and feedback from an external control system. To ensure coupling of the afterburner with the nozzle, it is made annular with a central body. The method for controlling thrust of a ramjet engine running on solid fuel consists in supplying air from the air intake device directly to the surface of the charge in the housing from the side of the combustion chamber and decomposing the surface layer of the fuel. A mixture of decomposition products and air is fed into the afterburner, and then sent to the nozzle to create jet thrust. In order to control the gap between the paired charge combustion surface and the needle surface, the movable part of the needle is moved in the direction of the combustion surface by means of a control mechanism and the flow rate at the inlet to the afterburner chamber, the flow velocity at the charge combustion surface, and the solid fuel decomposition rate are varied according to the required consumption of fuel decomposition products and engine thrust.

EFFECT: consistent achievement of the required thrust of a solid-fuel ramjet engine in accordance with the commands from the external control system of the aircraft.

2 cl, 2 dwg