The paper describes the design, calibration, and characterization of a thrust stand capable of nano-Newton resolution. A low uncertainty calibration method is proposed and demonstrated. A passive eddy current based damper, which is non-contact and vacuum compatible, is employed. Signal analysis techniques are used to perform noise characterization, and potential sources are identified. Calibrat...

A promising actuator for high-speed flow control, referred to as a Plasma Synthetic Jet (P.S.J), is being studied by the DMAE department of the ONERA, and the Laplace laboratory of the CNRS, in France. This actuator was inspired by the “Sparkjet” device developed by the Johns Hopkins University Applied Physics Laboratory. The PSJ, which produces a synthetic jet with high exhaust velocities, no ...

Abstract An air-supplement plasma synthetic jet (PSJ) actuator increases the air supplemental volume in recovery stage and improves energy by attaching a check valve to chamber of conventional actuator. To explore flow control effect mechanism actuator, via particle image velocimetry experiments low-speed wind tunnel, field boundary layer characteristics two-dimensional airfoil surface under di...

Wall-surface jet induced by the dielectric barrier discharge (DBD) has been proposed as an actuator for active flow control in aerodynamic applications. Discharge plasma evolution of the DBD plasma actuator was simulated based on a simple fluid model, in which the electron, one type of positive ion and negative ion were taken into account. Two-dimensional simulation was conducted, and the resul...

The effect of streamwise plasma vortex generators on the convective heat transfer a turbulent boundary layer is experimentally investigated. A Dielectric Barrier Discharge (DBD) plasma-actuator array employed to promote pairs counter-rotating, streamwise-aligned vortices embedded in well-behaved over flat plate. study aims at elucidating mechanism interaction between plasma-induced vortical str...

Conventional plasma synthetic jet actuators rely only on orifice for suction when functioning long durations. A limited supplementary gas leads to velocity reduction and weakening of the flow control ability. Therefore, this study proposes an air-supplied actuator with a check valve externally connected cavity improve its gas-supplying ability performance. quartz glass discharge chamber is deve...

This work makes advances in the delay of boundary layer transition from laminar to turbulent flow via feedback control. The applications include the reduction of drag over streamline bodies (e.g., airplane wings) and the decrease of mixing and heat transfer (e.g., over turbine blades in jet engines). A difficulty in many fields is designing feedback controllers for high-dimensional systems, be ...