Aerodynamic lift and aerodynamic resistance coefficient combined measurement method
A technology of aerodynamic lift and aerodynamic drag, applied in aerodynamic tests, measuring devices, testing of machine/structural components, etc., can solve the problem of lack of simultaneous measurement of aerodynamic lift and aerodynamic drag, achieve a wide range of speed testing, and low cost , the effect of short experiment time
Active Publication Date: 2021-04-30
INST OF MECHANICS - CHINESE ACAD OF SCI
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[0006] The purpose of the present invention is to provide a method for joint measurement of aerodynamic lift and aerodynamic drag coefficient to solve the technical problem of lacking a method for simultaneously measuring aerodynamic lift and aerodynamic drag in the prior art
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[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0047] At present, the main problem that hinders the dynamic model experimental test from replacing the wind tunnel experimental test is the measurement of aerodynamic drag and aerodynamic lift, but at present there is a lack of methods and technologies for the combination and simultaneous measurement of aerodynamic lift and aerodynamic drag coefficient at home and abroad. For this reason, the present invention Provides a joint measurement method of aerodynamic...
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The invention discloses an aerodynamic lift and aerodynamic resistance coefficient combined measurement method. The method comprises the following steps: step 100, establishing a model device for a dynamic model experiment; step 200, arranging a data acquisition module on the model device, weighing the weight of an integral experimental model formed by the model device and the data acquisition module, and recording the weight as mm; step 300, completing experiments of different speed areas on the dynamic model experiment device by the experiment model, and obtaining multiple effective experiment values; and step 400, based on a plurality of acceleration values and vertical force values of the experimental model obtained by the data acquisition module, performing data processing and calculation to sequentially obtain an aerodynamic lift coefficient and an aerodynamic resistance coefficient of the experimental model in a dynamic model experiment process. The aerodynamic model experiment carried out in the invention not only can realize the combined measurement of aerodynamic lift and aerodynamic resistance coefficients, but also can complete many experiments which cannot be completed by wind tunnel experiments.
Description
technical field [0001] The invention relates to the technical field of aerodynamic model experiments, in particular to a joint measurement method for aerodynamic lift and aerodynamic drag coefficient. Background technique [0002] In general vehicle or aircraft aerodynamic parameter tests, since the scaled models of these devices are basically equal in length and width, wind tunnels can be used to carry out related aerodynamic test tests, while the length of the scaled models of high-speed trains is much larger than its lateral dimensions However, the dynamic model can simulate the train movement on the track naturally and realistically. In addition, for the experimental simulations related to train passing through tunnels and intersections, it is almost impossible to use wind tunnel experiments to complete these processes, while dynamic model experiments can easily simulate these processes; moreover, the aerodynamic drag and lift of trains passing through long tunnels can b...
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IPC IPC(8): G01M9/06
CPCG01M9/06
Inventor 杨乾锁
Owner INST OF MECHANICS - CHINESE ACAD OF SCI