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Aerodynamic characteristic value result correcting method

A technology of aerodynamic characteristics and numerical calculation, applied in the field of helicopter testing, can solve problems such as long-term design and manufacturing, and achieve the effect of reducing cost and shortening design time.

Active Publication Date: 2019-03-29
CHINA HELICOPTER RES & DEV INST
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Problems solved by technology

The wind tunnel test usually takes a long time to design and manufacture the test model, and at the same time, it is necessary to wait for the test schedule of the wind tunnel

Method used

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Embodiment Construction

[0018] In order to make the implementation purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application.

[0019] In order to solve the problem in the prior art that the aerodynamic characteristic data can only be obtained through wind tunnel tests in the process of helicopter research and development, and cannot be quickly verified after the aerodynamic characteristic data is modified, this application proposes a numerical calculation method for aerodynamic characteristics. The result correction method can quickly obtain relatively accurate aerodynamic characteristic data of the newly developed helicopter (hereinafter referred to as the target helicopter).

[0020] The method for correcting the numerical calculation results of aerodynamic characteristics of the p...

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Abstract

The invention provides an aerodynamic characteristic value result correcting method, which belongs to the technical field of helicopter. According to the aerodynamic characteristic value result correcting method, through acquiring the aerodynamic characteristic wind tunnel test value and the CFD calculation value of the existing helicopter with a similar aerodynamic structure as a target helicopter, a correcting coefficient of the aerodynamic characteristic CFD calculation value is obtained, and through the correcting coefficient, the aerodynamic characteristic CFD calculation value of the target helicopter is obtained. Compared with a method of acquiring an aerodynamic characteristic value by the wind tunnel test, the aerodynamic characteristic value result correcting method provided in the invention can shorten the design time by 70% and reduce the cost, and an effective and feasible method is provided for rapid design and cost reduction of the helicopter.

Description

technical field [0001] The application belongs to the technical field of helicopter testing, and in particular relates to a method for correcting numerical calculation results of aerodynamic characteristics. Background technique [0002] In the process of helicopter development, the aerodynamic characteristics of the fuselage and various components are relatively important basic data, which are the basis for the calculation of the helicopter's flight performance, flight quality, flight load and rotor load. Therefore, it is necessary to obtain relatively accurate aerodynamic characteristics data. . [0003] In the previous helicopter development process, the method of wind tunnel test was usually used to obtain the aerodynamic characteristic data of the newly developed model. The wind tunnel test usually takes a long time to design and manufacture the test model, and also need to wait for the test schedule of the wind tunnel. During the wind tunnel test, the optimized desig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/08
CPCG01M9/08
Inventor 龙海斌吴裕平王之良芦志明应敏敢胡偶辛颖
Owner CHINA HELICOPTER RES & DEV INST
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