Flow-increasing aero-engine with heat and momentum recovery function

Abstract

The invention relates to an aero-engine, in particular to a flow-increasing aero-engine with a heat and momentum recovery function, which comprises a flow-increasing mechanism communicated with an engine exhaust nozzle and a transmission mechanism connected with an engine fan, and the transmission mechanism is connected with the flow-increasing mechanism and used for transmitting the flow-increasing mechanism to guide outside air into the engine exhaust nozzle. By arranging the flow increasing mechanism, cold airflow compressed by the flow increasing mechanism from the external environment enters the engine exhaust nozzle, secondary combustion is conducted on the cold airflow and oil gas which is not fully combusted at the engine exhaust nozzle, the combustion efficiency is improved, the thrust of an engine in the take-off stage is improved through heat exchange, short-distance take-off is achieved, and the service life of the engine is prolonged. And in addition, cold air compressed from the flow increasing mechanism is sprayed to the exhaust nozzle of the engine at a high speed, momentum exchange is carried out on the cold air and gas sprayed out of the combustion chamber, and momentum recovery is also achieved.

Description

technical field [0001] The invention relates to the technical field of aero-engines, in particular to a flow-increasing aero-engine with heat and momentum recovery functions. Background technique [0002] Aeroengine is a kind of highly complex and precise thermal machinery. As the heart of aircraft, it is not only the power of aircraft flight, but also an important driving force to promote the development of aviation industry. Every important change in the history of human aviation is closely related to the technological progress of aeroengine Inseparable. [0003] The engine applied to the fighter is also particularly important, but the performance of the fighter is contradictory in many aspects. For example, in the take-off stage, the engine needs to be reduced and boosted to increase the speed, so as to realize the short-distance take-off of the aircraft and improve the combustion efficiency. It is also required that the aircraft have better high-altitude and high-speed ...

AI Technical Summary

Problems solved by technology

[0003]The engines used in fighter jets are also very important, but the performance of fighter jets is contradictory in many aspects. The short-distance take-off of the aircraft and the improvement of combustion efficiency, and the aircraft are required to have better high-altitude and high-speed performance in air combat, but due to the limitation of the structure of the existing engine, it is difficult to balance the performance between the two, so a new engine is proposed Incremental aeroengine with heat and momentum recovery to solve the above problems

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