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Device and method for improving crosswind resistance of aero-engine nacelle inlet

An aero-engine and air intake technology, which is applied to engine components, jet propulsion devices, gas turbine devices, etc., can solve the problems of reducing the reputation and profit level of airlines, increasing the difficulty of pilot operation, and increasing the working time of engines, so as to improve the environment. Adaptability and operational ability, expanding the range of crosswind envelopes, and improving the effect of crosswind resistance

Active Publication Date: 2021-04-27
AECC COMML AIRCRAFT ENGINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Changing the operation mode of the aircraft / engine will increase the pilot's operational difficulty and increase the working hours of the engine; grounding will directly lead to flight delays or cancellations, reducing the airline's reputation and profitability

Method used

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  • Device and method for improving crosswind resistance of aero-engine nacelle inlet
  • Device and method for improving crosswind resistance of aero-engine nacelle inlet
  • Device and method for improving crosswind resistance of aero-engine nacelle inlet

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Embodiment Construction

[0030] A variety of different implementations or examples for implementing the described subject technical solutions are disclosed below. In order to simplify the disclosure, the following describes the specific examples of each component and arrangement, of course, these are only examples, not limiting the protection scope of the present invention. For example, the description that the first feature described later in the description is formed on or above the second feature may include an embodiment in which the first and second features are formed through direct contact, and may also include an embodiment in which the first and second features are formed between the first and second features. Embodiments of additional features such that there may be no direct relationship between the first and second features. Additionally, reference numerals and / or letters may be repeated in different instances in these disclosures. This repetition is for brevity and clarity and does not i...

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Abstract

The invention relates to a device and method for improving crosswind resistance of an aero-engine nacelle inlet. The device for improving the crosswind resistance of the aero-engine nacelle inlet comprises an air entraining port of a high-pressure air source, an air collection cavity, a guide pipe and an air injection hole, wherein the air entraining port of the high-pressure air source is arranged at the downstream position of a fan, the air collection cavity is located at the lip of the nacelle inlet, the guide pipe is used for leading high-pressure air into the air collection cavity, and the air injection hole communicates with the air collection cavity; a plurality of air injection holes are formed in the inner wall face of a windward side lip of the nacelle inlet and the edge of a lower edge lip of the inlet respectively; the air injection holes in the inner wall face of the windward side lip are constructed to inject airflow so as to increase the flowing speed of separated air masses on the inner wall face of the inlet; and the air injection holes in the edge of the lower edge lip of the inlet are constructed to inject airflow to block ground vortexes.

Description

technical field [0001] The invention relates to an aero-engine, in particular to a device and a method for the cross-wind resistance of an aero-engine nacelle air intake. Background technique [0002] Wind is a meteorological phenomenon inherent in nature and one of the atmospheric environmental conditions that affect the operation of civil aircraft. The relationship between the wind direction and the position of the aircraft and the engine, and the related definitions of the crosswind are as follows figure 1 as shown, figure 1 The engine 1 , the tailwind direction 11 , the crosswind direction 13 , the crosswind direction 12 , the crosswind angle A, and the engine axis a1 are respectively shown. [0003] For civil aircraft using nacelle inlets, the crosswind will cause the airflow to flow around the lip of the nacelle, causing airflow separation to form on the inner wall of the nacelle inlet on the windward side of the crosswind. The total pressure is small, resulting in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/057F02C7/04
CPCF02C7/057F02C7/04
Inventor 骆广琦王玉东吴明峰郑恒赵运生斯夏依
Owner AECC COMML AIRCRAFT ENGINE CO LTD
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