Abstract
Active flow control (AFC) based on plasma synthetic jet actuator (PSJA) has been attracted a lot of researchers since Anderson and Knight put forward the concept of PSJA for the first time. Since then the characteristic of PSJA has been studied by means of many numerical simulations and experiments. This article showed a series of studies that manipulated a vehicle without moving control surfaces. Firstly, we research the characteristics of the aviation actuator, including the effects of structure and parameters on performance. Secondly, we explore the influence of the actuator on the air field around the aircraft by simulation, including the influence of the actuator on the aerodynamic coefficients and pitching moment coefficient. Finally, since these changes are similar to those caused by the deflection of the rudder surface, we can equivalent the effect of the PSJA to the deflection of the rudder surface, and simulate the three-degree-of-freedom pitch control channel of the aircraft to illustrate the effectiveness of PSJA on the flapless control system.
Highlights
Due to the great advantages such as small, fast response, more stable and higher efficiency are expected to meet the increasingly challenge of the modern high-performance aircrafts, a synthetic jet produced by plasma synthetic jet actuator (PSJA) with high velocities holds the promise of enabling enhanced flow control
Using an elaborately distributed plasma jet orifice layout on the surface of the vehicle, the aerodynamic coefficients and pitching moment coefficient can be improved, and to illustrate the effectiveness of PSJA on the flapless control system compared with the mechanical flaps only flight vehicle
EFFECTIVENESS OF PARAMETERS It can be seen from the Fig.10 that after installing PSJA, when the angle of attack is less than 10 degrees, the pitching moment coefficient is increased to some extent, and the closer to 10 degrees, the smaller the amplitude is
Summary
Due to the great advantages such as small, fast response, more stable and higher efficiency are expected to meet the increasingly challenge of the modern high-performance aircrafts, a synthetic jet produced by PSJA with high velocities (appropriately 300m/s) holds the promise of enabling enhanced flow control. Wei et al [23] studied the integration of flight control and flow control at low speed using plasma actuators. The technologies which applying PSJ have potential to improve the performance of flight control systems by replacing moving surfaces with controlled air jet solutions. Statement of contributions: in the presented work, a new configuration of plasma synthetic jet model is put forward to form an actuator to aid flight, which is used as a motion auxiliary driver. Using an elaborately distributed plasma jet orifice layout on the surface of the vehicle, the aerodynamic coefficients and pitching moment coefficient can be improved, and to illustrate the effectiveness of PSJA on the flapless control system compared with the mechanical flaps only flight vehicle
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