Magnetostatic microvalve for high momentum rate pulsed jet generation

R. Viard , Abdelkrim Talbi , Philippe Pernod , Vladimir Preobrazhensky , A. Merlen (1)

1 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520

A fully integrated magnetic driven MEMS Micro-valve providing pulsed jets was developed and characterized for active aerodynamic control. The device is composed of a microvalve, a magnetostatic actuator and a packaging allowing accurate positioning on the models or prototypes. The microvalve is a resonator actuated by a specific coupling between an inductive driving coil and a NdFeB permanent magnet. The generated force was optimized to provide 250mN at 0.5A. High momentum rate, fully modulated pulsed jets have been obtained in the frequency range [0 – 500Hz] with velocities up to 150m/s. The actuation method allowed a good control over the pulsed jets characteristics that reached the required values for real scale automotive and aeronautic flow control experiments

Mots clés: Pulsed jet; magnetic actuator; Microvalve; active aerodynamic control

Domaines: Sciences de l'ingénieur [physics]

R. Viard, Abdelkrim Talbi, Philippe Pernod, Vladimir Preobrazhensky, A. Merlen. Magnetostatic microvalve for high momentum rate pulsed jet generation. Eurosensors XXIII, Sep 2009, Lausanne, Switzerland. pp.421-424, ⟨10.1016/j.proche.2009.07.105⟩. ⟨hal-00474087⟩