Current research

This page describes the research projects I am conducting at the Experimental AeroScience Group of the NUS Temasek Laboratories. Click on the figures or the links below to access the corresponding pages.

 Morph04 model Airfoil morphing by MFC actuators

The main scope of this research is exploring the use of macro fiber composite (MFC) actuators integrated to the skin of a wing for changing its shape to the degree required for tailoring its performance. To this aim an airfoil model has been designed and constructed that has a flexible upper skin whose shape can be changed by MFC actuators bonded to its inner side. Preliminary wind-tunnel measurements indicate a good behavior of the skin at freestream velocities up to 15 m/s and that the shaping by MFC actuators can be used for tailoring the aerodynamic performance of an airfoil.

 DBD plasma on Aerodynamic Control with Plasma Actuators

A dielectric-barrier-discharge (DBD) plasma is used to create an electrically-induced wind close to a surface for flow control. The main advantage of this type of actuation is that it directly converts electric energy into kinetic energy without involving moving mechanical parts. Secondly, its response time is very short and enables real-time control at high frequency. DBD plasma actuators are also light, small, and have little power consumption. However current DBD plasma actuators have low efficiency of energy conversion. Increasing their performance for aerodynamic control is one of the goals of the NUS Temasek Laboratories.

 Swept back grid fin Swept-back grid fins for reduced drag

Grid fins are aerodynamic control surfaces consisting of an outer frame with an internal lattice of intersecting thin walls. Grid fins have several advantages compared to conventional planar fins but they present higher drag at transonic speeds. A swept-back grid-fin has been developed by the NUS Temasek Laboratories for reducing this problem. This configuration has been explored by using CFD simulations followed by validation with wind-tunnel measurements. The results indicate that, compared to a conventional grid fin design, the swept-back type offers about 30% drag reduction in the transonic velocity range.

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© Copyright 2005 Marco Debiasi
Last modified on: 26 November 2013