Ramjet with function of high-speed pre-atomization of liquid aviation kerosene

Abstract

The invention discloses a ramjet with a function of high-speed pre-atomization of liquid aviation kerosene. The ramjet comprises a shunt cone, a gas inlet channel wall surface, a combustion chamber wall surface, an exhaust nozzle wall surface, an oil storage tank and an oil delivering pipe, wherein the shunt cone is connected with the oil storage tank through the oil delivering pipe; the gas inletchannel wall surface, the combustion chamber wall surface and the exhaust nozzle wall surface are connected in sequence; the shunt cone and the oil storage tank which serve as one part are arranged in a cavity formed by the gas inlet channel wall surface, the combustion chamber wall surface and the exhaust nozzle wall surface; a gas inlet channel is formed between the shunt cone and the gas inletchannel wall surface, a combustion chamber flow channel is formed between the shunt cone and the combustion chamber wall surface, an exhaust nozzle flow channel is formed between the shunt cone and the exhaust nozzle wall surface, and the gas inlet channel, the combustion chamber flow channel and the exhaust nozzle flow channel communicate in sequence; and a gas inlet hole is formed in the top ofthe shunt cone. The economy and safety of the ramjet are improved.

Description

technical field [0001] The invention belongs to the field of ramjet engines, in particular to a ramjet engine in which liquid aviation kerosene is atomized at high speed in advance. Background technique [0002] With the continuous improvement of the speed requirements of aircraft, the traditional turbojet engine can no longer meet the demand for thrust. The ramjet engine has no rotating parts such as compressors and turbines. It uses high-speed incoming flow to stagnate in the intake passage, converting kinetic energy into pressure energy to complete the compression process. Therefore, the ramjet has become the first choice for supersonic and hypersonic aircraft due to its large thrust-to-weight ratio, simple components, and good economic performance during supersonic flight. [0003] At present, ramjet engines mostly use solid fuels, which are difficult to control and have limited working time. At the same time, storage of solid fuels is difficult and the cost is extremel...

AI Technical Summary

Problems solved by technology

However, the combustion reaction of liquid aviation kerosene can only be carried out after injection, crushing, atomization and evaporation. At the same time, the ignition delay time of liquid aviation kerosene is relatively long, and the airflow velocity in the combustion chamber of the ramjet engine is extremely fast, so the residence time of the fuel The time is extremely short, which limits the application of aviation kerosene in ramjet engines and increases the difficulty of design

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