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Method for analyzing bird ingestion airworthiness compliance of aero-engine fan

An aero-engine and analysis method technology, applied in special data processing applications, instruments, electrical digital data processing and other directions, can solve the problems of easy inhalation of birds, endangering flight safety, affecting the normal operation of the engine, etc.

Active Publication Date: 2017-05-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] Modern turbojet aero-engines are very easy to inhale flying birds when they are working. The bird body hits the engine fan or compressor blades, causing deformation of the blades, affecting the normal operation of the engine and endangering flight safety.

Method used

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  • Method for analyzing bird ingestion airworthiness compliance of aero-engine fan
  • Method for analyzing bird ingestion airworthiness compliance of aero-engine fan
  • Method for analyzing bird ingestion airworthiness compliance of aero-engine fan

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should understand that following specific embodiment is only for illustrating the present invention and is not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand the present invention Modifications in various equivalent forms fall within the scope defined by the appended claims of the present application.

[0016] The present invention discloses an analysis example of a key parameter analysis method for airworthiness compliance verification of aero-engine fan suction bird, and the detailed implementation steps of the method of the present invention will be described below.

[0017] Evaluate the working condition of a certain type of fan inhaling a single medium bird, and determine the engine working status and test status during airworthiness compliance verification.

[0018...

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Abstract

The invention discloses a method for analyzing bird ingestion airworthiness compliance of an aero-engine fan. The method comprises the steps of defining a critical ingestion parameter (CIP) combination, wherein the parameter combination determines engine working and bird impact input states during bird ingestion airworthiness verification; and defining a synthesized critical impact parameter (SCIP) combination, wherein the parameter combination reflects a damage effect of the fan during engine bird ingestion airworthiness verification. In estimated results of all bird ingestion conditions, a test parameter combination when SCIP reaches a maximum is the CIP combination during airworthiness compliance verification, and the maximum damage to the fan in a bird ingestion state can be estimated.

Description

technical field [0001] The invention relates to the technical field of airworthiness compliance verification of aero-engine sucking birds. Background technique [0002] When modern turbojet aeroengines are working, birds are easily inhaled. The bird body hits the engine fan or compressor blades, causing deformation of the blades, affecting the normal operation of the engine and endangering flight safety. All major aviation powers in the world attach great importance to the design and analysis of bird strike resistance of aeroengine blades, and stipulate the bird strike resistance capability and evaluation requirements of engine blades in the form of airworthiness regulations. Before any engine is finalized, it is necessary to use the fan assembly and the full-scale engine to carry out the bird-absorbing airworthiness verification test, that is, use the air cannon to launch a bird of specified mass, and hit the fan with different rotation speeds at a certain speed and inciden...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 罗刚陈伟刘双丽刘璐璐关玉璞
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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