Lateral jet flow system for wind tunnel interference test

Abstract

The invention relates to a wind tunnel test device. More specifically, the invention relates to a lateral jet flow system for a wind tunnel interference test. The system is disposed in a wind tunnel, and comprises a supporting rod, wherein the interior of the supporting rod is horizontally provided with a high-pressure air flow channel. An inlet of the high-pressure air flow channel is connected to an air supply device, and an outlet of the supporting rod is provided with a force measurement device which is used for measuring the stress on a test model in the wind tunnel. The force measurement device is not communicated with the outlet of the high-pressure air flow channel. Moreover, the diameter of the outlet end of the supporting rod is less than the diameter of the inlet end. The system also comprises a spraying pipe which is disposed at the outlet of the high-pressure air flow channel. The axial direction of the spraying pipe is perpendicular to the axial direction of the high-pressure air flow channel. A high-pressure air flow passes through the high-pressure air flow channel and the spraying pipe, and is sprayed from a side part of the supporting rod to act on the test model. The system provided by the invention can meet the requirements of the model space and the spraying pipe layout, and employs a conventional force measurement device for precise measurement in the wind tunnel interference test.

Description

technical field [0001] The invention relates to a wind tunnel test device. More specifically, the present invention relates to a side jet system for wind tunnel disturbance testing. Background technique [0002] With the rapid development of the world's aerospace industry, especially the continuous improvement of the mobility requirements for aerospace weapon models, lateral jet flow control as a high-mobility solution is more and more widely used in weapon models, so that New requirements have been put forward for the lateral jet disturbance test in wind tunnel. The previous weapon models in my country did not use side jet flow control much, and the few models that used side jet flow control technology were mostly tactical and strategic weapons, and most of them belonged to orbit control (the nozzle is near the center of mass of the aircraft, relatively front ). Due to the large size of the model, the previous lateral jet test technology is to design a special hollow jet ...

AI Technical Summary

Problems solved by technology

As my country's weapons gradually change from tracking imitation to independent innovation, more and more models adopt the side jet flow method, and the control methods include orbit control and attitude control (the nozzle is far from the center of mass and behind), and the types cover strategic , tactical and conventional weapons, the model has a large slenderness ratio, and the available internal space is getting smaller and smaller. The size of the previous jet balance can no longer meet the test requirements. The precision six-component force measuring balance has become the first choice of the model design department for the jet flow test

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