Electro Active Polymer-based Dimple Actuators with Ultra-thin Metal Electrode for Flow Control

Sasikala, S and Chowdhury, P and Madhavan, KT (2013) Electro Active Polymer-based Dimple Actuators with Ultra-thin Metal Electrode for Flow Control. In: ICIUS-2013, 25 Sept 2013, Jaipur, Rajasthan.

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    Abstract

    Research efforts are being pursued currently at CSIR-NAL towards the development and application of Electro-Active Polymers (EAP) as a micro-actuator for flow control at low Reynolds numbers. Dimple actuators with ultra-thin metal electrodes have been fabricated and demonstrated for their effectiveness in flow separation control on airfoils. This paper describes the design, fabrication, characterization and validation of EAP-based dimple actuators and their characterization, in terms of their response to electrical fields at different excitation frequencies. After characterization, validation tests have been carried out on the actuators at low Reynolds numbers in the wind tunnel. Tests were done with an array of dimple actuators on a NACA4415 airfoil using PIV measurements. It has been found that the device is very effective in reducing flow separation which is of high relevance in MAV applications.

    Item Type: Conference or Workshop Item (Paper)
    Subjects: ENGINEERING > Electronics and Electrical Engineering
    Division/Department: Surface Engineering Division, Surface Engineering Division, Experimental Aerodynamics Division
    Depositing User: Mrs SK Pratibha
    Date Deposited: 04 Jun 2015 10:46
    Last Modified: 04 Jun 2015 10:46
    URI: http://nal-ir.nal.res.in/id/eprint/12121

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