| abstract |
The invention discloses a phase-change type paraffin-containing fuel ramjet engine, which adopts an integrated design of a combustion chamber and a gasification chamber, and has a compact structure and high energy utilization rate. A large amount of heat released by the combustion reaction in the combustion chamber heats the shell. Under the action of radiation and convection heat transfer, the surface of the paraffin-containing fuel can be preheated, and the ram air can also be heated, so that the fuel surface has a higher temperature. temperature, which contributes to the phase transition of the fuel. The realization of the mode conversion is simple, and the automatic switching between the boosting section and the punching section can be completed by using the change of pressure. A conical hole with a certain inclination is designed in the head of the combustion chamber, which can realize the swirling flow of the gas, and then obtain a higher combustion efficiency. When the boosting section and the punching section are switched, the mixture of the phase change product and the air flows into the combustion chamber under the action of the conical hole, and the mixing effect is good. The size of the engine can be adjusted, and it has a wide range of applications and is suitable for the power system of supersonic aircraft. |