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Showing 1 to 9 of 9 for “"synthetic jet actuator"”.
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Design of Synthetic Jet Actuator for Flight Control of Small UAV
… of this project is to develop a prototype SJA - Synthetic Jet Actuator to embed into a small UAV with modified Glauert wing cross-section for Active Flow Control. Apart from lift enhancement, drag reduction, or separation control, etc; LCO suppression might be possible by modifying the boundary …
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RESONANCE BASED LOW FREQUENCY SYNTHETIC JET ACTUATOR MODELING, DESIGN, AND TESING
Synthetic Jet Actuators have been the topic of extensive study in the aerospace industry because of their ability to actively control flow over aerodynamic surfaces without discrete control surfaces such as a flap. One challenge has been to develop a low frequency, lightweight actuator that can …
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Investigation of Scaling Effects for a Synthetic Jet Actuator Using High and Low Fidelity Analyses
… an investigation on the scaling effects for synthetic jet actuators using Ansys-CFX and a Lumped Element Model (LEM). Synthetic jets or zero net mass-flux devices use a vibrating diaphragm to generate an oscillatory flow through a small orifice. A synthetic jet actuator can be used on MAVs as …
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Improvement In Acoustic Liner Attenuation In Turbofan Engines By Means Of Plasma Synthetic Jet Actuator
… efficient attenuators of engine noise. Plasma actuators have been used as flow control devices in other settings and will now be studied as an enhancement for acoustic liners. A plasma actuator can excite oscillatory flow or a single direction (bias flow). Both flow types are studied as …
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Robust Nonlinear Estimation and Control Applications using Synthetic Jet Actuators
… of an aircraft wing. To address this, the use of synthetic jet actuators (SJAs) in UAV flight control systems is becoming popular as a practical alternative and to mechanical deflection surfaces.</p> <p>Synthetic jet actuators are promising tools for LCO suppression systems in small UAVs due to …
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The Influence of the Slot Aspect Ratio on the Flow Field of Synthetic Jets
… are cheap and lightweight at the same time. The synthetic jet actuator is one such device that has advantages of low cost but also simple structure and easy installation amongst other things, for which it has attracted much research interest. The jet is synthesised from the ambient air, which is …
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Experimental Design and Analysis of Piezoelectric Synthetic Jets in Quiescent Air
… each year by making an aircraft more efficient. Synthetic jets, a device for active flow control, operate by introducing small amounts of energy locally to achieve non-local changes in the flow field with large performance gains. These devices consist of a cavity with an oscillating diaphragm …
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The effect of synthetic jet driving parameters on heat transfer in microchips cooling channels
… forced convection in the microchannel and the synthetic jet impingements. A parametric study has been carried out on the operating conditions on the synthetic jet actuator, these parameters including: the frequency of the diaphragm in the actuator, the jet outlet velocity both in magnitude and …
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Robust Control Methods for Nonlinear Systems with Uncertain Dynamics and Unknown Control Direction
… dynamic uncertainty, unmodeled disturbances, and actuator anomalies that result in an unknown and time-varying control direction. In order to ease readability of this dissertation, detailed explanations of the relevant mathematical tools is provided, including stability denitions, Lyapunov-based …