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A Pulse Excitation Method for Scaled Model Flutter Flight Test

A technology of scaled model and flight test, applied in aerodynamic test, machine/structural component test, instrument, etc., to achieve the effect of short pulse excitation time, simple structure and low cost of use

Active Publication Date: 2020-11-06
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a pulse excitation method for scale model flutter flight test, to solve or at least alleviate at least one problem existing in the background art

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  • A Pulse Excitation Method for Scaled Model Flutter Flight Test

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Embodiment Construction

[0016] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. 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 invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...

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Abstract

The invention discloses a scaling model flight flutter test pulse excitation method, and relates to the technical field of scaling model flight flutter tests. The scaling model flight flutter test pulse excitation method comprises the following steps that 1, a gas container is installed on a scaling model; 2, the gas container in the step 1 is inflated with compressed gas; 3, a covering cap of the gas container is opened by means of a control mechanism, so that the inflated compressed gas in the step 2 is ejected out instantly, and then the covering cap is closed through the control mechanism. The scaling model flight flutter test pulse excitation method has the advantages that compared with the prior art, the structure is simple, a small rocket does not need to be ignited, the method is only applicable to compressed gas ejection, is safe, environmentally friendly, and short in pulse excitation time, the pulse force and the pulse time can be adjusted, the container can be inflated with gas again after the compressed gas is released, the gas can be recycled, and the using cost is low.

Description

technical field [0001] The invention relates to the technical field of scale model flutter flight test, in particular to a pulse excitation method for scale model flutter flight test. Background technique [0002] Pulse excitation is a commonly used excitation form for aircraft flutter test. Usually, the aircraft installs small rockets at the tip of the wing, and the pilot uses the control button to ignite the small rockets, and the flutter model is excited by the pulse force generated when the small rockets are launched. Usually, the thrust of the small solid rocket used in the flight flutter test is 1000-400N, and the thrust duration is 10-50ms. However, the disadvantages of small rocket incentives are: 1) the installation of small rockets on the aircraft needs to be considered at the stage of aircraft component assembly; 2) the number of small rockets carried in each flight is limited; 3) the cost is relatively high. However, due to financial constraints, there is curre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/00
CPCG01M9/00
Inventor 邱涛脱朝智吴江鹏于佳鑫
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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