Free-flying model jet test device

Abstract

The invention provides a free flight model jet test device comprising a model head part (1), a model intermediate section (2) and a model tail section (3). The model head part (1), the model intermediate section (2) and the model tail section (3) are connected in turn. The internal cavity of the model head part (1), the internal cavity of the model intermediate section (2) and the internal cavityof the model tail section (3) are communicated so as to form a model internal cavity. An internal cavity blind hole is arranged in the wall of the model internal cavity. A jet tip modification block (10) is installed on the external wall of any section of the model head part (1), the model intermediate section (2) and the model tail section (3). The installing hole of the jet tip modification block (10) is communicated with the internal cavity blind hole. A compressed gas cylinder (4) and a jet mechanism are installed in the model internal cavity. The compressed gas cylinder (4) is controlledto generate gas through the jet mechanism. The jet tip modification block (10) is jetted out under the effect of the gas. The disadvantages that the conventional free flight model cannot perform active flow control type test can be solved and the problems of gas source installation, guidance and triggering can be overcome.

Description

technical field [0001] The invention relates to a wind tunnel test model, in particular to an air jet test device for a free-flying model. Background technique [0002] Air jet control is a commonly used active flow control method. Usually, air jets are opened on the surface of the model that needs to improve the quality of the flow field, and the gas is injected to the outside of the aircraft as needed, thereby changing the flow field mechanism on the surface of the aircraft and providing additional air for the aircraft. Power and moment, in the field of aerospace, jet active control method is a hot research topic. Model free-flying wind tunnel test is a commonly used research method to study the dynamic aerodynamic characteristics of aircraft. It has the unique characteristic of unsupported interference, which is different from other steady and quasi-steady test methods. The basic method of the model free-flying wind tunnel test is to eject the model at high speed against...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a free-flying model air jet test device, which solves the shortcomings of the previous free-flying model that cannot carry out active flow control tests, and install the compressed air source on the model Internally, the problems of air source installation, guidance and triggering are overcome

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