Method for determining dynamic response of aircraft in mobile wind field environment

A determination method and aircraft technology, applied in the field of aircraft simulation, can solve the problems of complex aerodynamic load calculation technology and process, low calculation accuracy, large deviation, etc., so as to improve the determination accuracy and dynamic response simulation accuracy, and simplify the determination process.

Active Publication Date: 2021-12-07
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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Problems solved by technology

The surface element method is generally used to determine the external aerodynamic load of aircraft in the mobile wind field environment. The calculation technology and process of aerodynamic load are complicated, and the calculation accuracy is low, especially in the aerodynamic nonlinear region, the deviation will be larger

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  • Method for determining dynamic response of aircraft in mobile wind field environment
  • Method for determining dynamic response of aircraft in mobile wind field environment
  • Method for determining dynamic response of aircraft in mobile wind field environment

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Embodiment Construction

[0039] 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 in conjunction with 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 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 shall fall within the scope of protection of this application. Embodiments of the p...

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Abstract

The invention belongs to the technical field of aircraft simulation, and particularly relates to a method for determining the dynamic response of an aircraft in a mobile wind field environment. The method comprises the following steps: initializing aerodynamic load calculation parameters; updating the local equivalent moment of each grid on the surface of the aircraft; carrying out interpolation to obtain the wave gust speed of each grid; calculating the incidence angle, the sideslip angle and the dynamic pressure of each grid; interpolating to obtain a pressure coefficient at the centroid of each grid; and integrating all grids to obtain the external aerodynamic load of the aircraft. According to the improved method for determining the external aerodynamic load of the aircraft in the mobile wind field environment, the influence of the process that the aircraft is surrounded by the mobile wind field on the aerodynamic load is considered, the determination process of the aerodynamic load is simplified, and the determination precision of the aerodynamic load is improved.

Description

technical field [0001] The application belongs to the technical field of aircraft simulation, in particular to a method for determining the dynamic response of an aircraft in a moving wind field environment. Background technique [0002] Dynamic response generally refers to the response of a control system to its output from the initial state to the final state under the action of a typical input signal. [0003] The mobile wind field is a special kind of gust, which has the following three differences compared with the ordinary wind field model: (1) The mobile wind field has the characteristics of high-speed propagation, and generally expands at supersonic or sonic speed, while the ordinary wind field generally does not Consider its own propagation speed; (2) The disturbance energy carried by the moving wind field is greater, which is manifested in its higher wind field speed; (3) The speed of the moving wind field is spatial, and can be along the direction and direction of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/28G06F113/08G06F119/14
CPCG06F30/28G06F30/15G06F2113/08G06F2119/14Y02T90/00
Inventor 荆志伟唐朕侯宗团肖启之
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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