Method and device for improving aerodynamic stability of carrier-based aircraft engine based on state identification

A state recognition, engine technology, applied in machine/engine, jet propulsion, etc., can solve problems such as no lift

Active Publication Date: 2019-07-19
AECC SHENYANG ENGINE RES INST
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Problems solved by technology

[0003] At present, the aerodynamic stability design of carrier-based aircraft engines depends entirely on the engine's own stability margin, and no measures to improve aerodynamic stability have been proposed for the characteristics of carrier-based aircraft engines (such as take-off status and ejection status). Only α1, α2, A8, etc. The geometric control law is uniformly adjusted within the full envelope, and the aerodynamic stability of the engine has also been exposed many times during actual use.

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  • Method and device for improving aerodynamic stability of carrier-based aircraft engine based on state identification
  • Method and device for improving aerodynamic stability of carrier-based aircraft engine based on state identification
  • Method and device for improving aerodynamic stability of carrier-based aircraft engine based on state identification

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Embodiment Construction

[0034] In order to make the objectives, technical solutions and advantages of the implementation of the application clearer, the technical solutions in the implementation modes of the application will be described in more detail below with reference to the drawings in the implementation modes of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the present application. The embodiments described below by referring to the figures are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application. Embodiments of the pr...

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Abstract

The invention belongs to the technical field of carrier-based aircraft engine design, and particularly relates to a method and device for improving the aerodynamic stability of a carrier-based aircraft engine based on state identification. The method for improving the aerodynamic stability of the carrier-based aircraft engine based on state identification comprises the following steps that firstly, landing gear state, flight height, engine mach number and engine accelerator lever position information of an aircraft are acquired; then the validity of a takeoff status identification signal of the aircraft is determined; then the flight state of the aircraft is determined, and finally the compressor inlet adjustable stator blade angle control law and the engine nozzle control law of the aircraft under different flight states are separately arranged, so that the aerodynamic stability of the engine is improved. According to the method and device for improving the aerodynamic stability of the carrier-based aircraft engine based on state identification, a2 and A8 geometric area control methods are classified and designed in detail according to the flight state, a takeoff / ejection takeoffstate and a landing / go-around state according to the engine use environment, so that the aerodynamic stability of the engine is greatly improved, and the aerodynamic stability working margin of the carrier-based aircraft engine is greatly increased.

Description

technical field [0001] The application belongs to the technical field of carrier-based aircraft engine design, and in particular relates to a method and device for improving the aerodynamic stability of a carrier-based aircraft engine based on state recognition. Background technique [0002] Due to the special environment of take-off and landing on the ship, the use of carrier-based aircraft engines is somewhat different from that of land-based engines. For example, when landing on the ship, the aircraft needs to be controlled precisely, and if the arrest is unsuccessful, it is necessary to go around immediately. The characteristics require that the accelerated fuel supply is increased compared with the normal land-based engine, which will have an adverse effect on the aerodynamic stability of the engine. For steam catapult carrier-based aircraft, the engine inlet may inhale the steam leaked from the catapult at the moment of catapult take-off. The above characteristics of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K1/16F02K1/36F02K3/04
CPCF02K1/165F02K1/36F02K3/04
Inventor 李大为侯会文范顺昌邴连喜金海李焦宇王嘉瞳崔金辉
Owner AECC SHENYANG ENGINE RES INST
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