Flow Control over Conical Forebody with Port Pulsed Plasma Actuator

A study using plasma port single-pulsed discharge is performed on the flow control of asymmetrical vortices over slender conical forebody. The different circumferential steady and unsteady pressure distributions are measured in the wind tunnel test. At the same time, the local side force, the increment of local side force and the overall side force and moment are calculated with the circumferential pressure distributions of differet sections. The test result shows we can use port single-pulsed discharge to achieve the linear proportional contol of asymmetrical force and moment over slender conical forebody and have good linearity. Both ensemble averaged and phase-locked averaged pressure distributions at Section 8 have reached convergence. Compared with the phase-locked averaged pressure distributions of different phase angle at Section 8, the response of flow field is hysteresis of the pulsed modulating frequency.