Sensing-driving integrated intelligent dynamic vortex generator

Abstract

The invention discloses a sensing-driving integrated intelligent dynamic vortex generator, which belongs to the field of flow field sensing and active control, and is characterized in that splayed vortex generators are mounted on two end surfaces of a piezoelectric beam driver, and deflection torque at the end part when a piezoelectric beam is bent and deformed is used for driving the generators to rotate, so that an included angle between the vortex generators and incoming flow is changed. The vortex generator is subjected to aerodynamic force under the action of incoming flow and acts on the piezoelectric plate, and current operation parameters are obtained by sensing the size of the aerodynamic force. The piezoelectric beam and the vortex generator are combined, the direct piezoelectric effect of piezoelectric ceramics is used for sensing a flow field, the inverse piezoelectric effect is used for driving the vortex generator to achieve active control over the flow field, meanwhile, the self-adaptive control capacity is achieved, and the vortex generator is suitable for wing surfaces, engine air inlets and the bottom of a high train. Better effects are achieved in the aspects of inhibiting the surface separation of the machine body and improving the operation safety and stability.

Description

technical field [0001] The invention belongs to the field of flow field perception and active control, and in particular relates to a perception-drive integrated intelligent dynamic vortex generator. Background technique [0002] As a key component of various aircraft, the lift / drag performance of the wing determines the flight efficiency, safety and stability of the aircraft. Among them, the flow separation phenomenon during low-speed flight and the shock wave generated during high-speed flight will lead to the deterioration of the lift / drag characteristics of the wing. Therefore, increasing the lift and reducing drag has always been the two major technical difficulties for the wing to be overcome. The existing technical solution is mainly to fix the vortex generator on the surface of the wing. Although this passive control method can suppress the premature separation of the airflow to a certain extent, it is only suitable for some special flight conditions. The effect is ...

AI Technical Summary

Problems solved by technology

Among them, the flow separation phenomenon during low-speed flight and the shock wave generated under high-speed flight will lead to the deterioration of the lift / drag characteristics of the wing. Therefore, increasing the lift and reducing drag has always been the two major technical difficulties for the wing to be overcome.

The existing technical solutions mainly fix the vortex generator on the surface of the wing. Although this passive control method can suppress the premature separation of the airflow to a certain extent, it is only effective for some special flight conditions. The effect, the adaptability is not strong, and the effect is not ideal for special cases such as Mach number and angle of attack changes

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