A Consideration of the Switching Time in a Bistable Wall Attachment Fluid Amplifier without a Splitter : Influence of the Control Nozzle Angle

Abstract

This paper is a study of the switching time in a bistable wall attachment fluid amplifier. We have made a bistable wall attachment fluid amplifier with a freely movable control nozzle and experimented on the switching time using this fluid amplifier. Being based on Sher's method, we have devised a similar model with the control nozzle angle γ as a new parameter. The calculated values from this model agreed well with the experimental results. When the inflow rate from the control port is same, the smaller the control nozzle angle is, the shofter the switching time is. Finally, we have found that the optimum control nozzle angle exists within some region (for instance, the region from -15 degrees to -25 degrees).