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

A technology for aero-engines and engines, which is applied to machines/engines, mechanical equipment, gas turbines, etc., and can solve problems such as difficulty in taking into account performance

Active Publication Date: 2022-05-06
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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-alti...

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 with figure 2 As shown, a flow-increasing aero-engine with heat and momentum recovery functions includes a flow-increasing mechanism 1 connected to the engine tail nozzle and a transmission mechanism 2 connected to the engine fan, and the transmission mechanism 2 is connected with the flow-increasing mechanism 1 for use Guide the outside air to the engine exhaust nozzle in the transmission flow increasing mechanism 1;

[0033] Further, the number of the transmission mechanism 2 and the flow increasing mechanism 1 is multiple, and the plurality of transmission mechanisms 2 and the flow increasing mechanism 1 are arranged on the outside of the engine at an equal distance in a ring, and the number of the flow increasing mechanism 1 and the transmission mechanism 2 can be adjusted. The setting can change the air flow into the tail of the turbine;

[0034] The flow-increasing mechanism 1 includes a flow-increasing duct 11 and a flow-increasing fan 12. The...

Embodiment 2

[0038] Such as figure 1 , figure 2 with image 3 As shown, a flow-increasing aero-engine with heat and momentum recovery functions includes a flow-increasing mechanism 1 connected to the engine tail nozzle and a transmission mechanism 2 connected to the engine fan, and the transmission mechanism 2 is connected with the flow-increasing mechanism 1 for use Guide the outside air to the engine exhaust nozzle in the transmission flow increasing mechanism 1.

[0039] The number of the transmission mechanism 2 and the flow increasing mechanism 1 is multiple, and the plurality of transmission mechanisms 2 and the flow increasing mechanism 1 are arranged on the outside of the engine in a ring and equidistant. By setting the number of the flow increasing mechanism 1 and the transmission mechanism 2, The air flow into the tail of the turbine can be varied.

[0040] The flow-increasing mechanism 1 includes a flow-increasing duct 11 and a flow-increasing fan 12. The flow-increasing duc...

Embodiment 3

[0044] Such as figure 1 , figure 2 , image 3 with Figure 4 As shown, a flow-increasing aero-engine with heat and momentum recovery functions includes a flow-increasing mechanism 1 connected to the engine tail nozzle and a transmission mechanism 2 connected to the engine fan, and the transmission mechanism 2 is connected with the flow-increasing mechanism 1 for use Guide the outside air to the engine exhaust nozzle in the transmission flow increasing mechanism 1.

[0045]Further, the number of the transmission mechanism 2 and the flow increasing mechanism 1 is multiple, and the plurality of transmission mechanisms 2 and the flow increasing mechanism 1 are arranged on the outside of the engine at an equal distance in a ring, and the number of the flow increasing mechanism 1 and the transmission mechanism 2 can be adjusted. The setting can change the air flow into the tail of the turbine.

[0046] The flow-increasing mechanism 1 includes a flow-increasing duct 11 and a flo...

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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 ...

Claims

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Application Information

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IPC IPC(8): F02K3/062F02K3/077F02K1/38F02C7/36
CPCF02K3/062F02K3/077F02K1/38F02C7/36Y02T10/12
Inventor 赵景山魏松涛
Owner TSINGHUA UNIV
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