SHAPE ADAPTIVE AIRFOILS FOR TURBOMACHINERY APPLICATIONS UNDERGOING LARGE DEFORMATIONS

Smart materials and smart structural concepts in o w control have the potential for signican t impact on the design and performance of modern turbocompressors. Much of the research in active o w control in a compressor has focused on using blowing and suction or Micro Electro Mechanical System (MEMS) devices to alter the boundary layer on the surface. This paper gives a brief review on active materials and adaptive structures in turbomachinery applications. A preliminary study is conducted to identify the actuation requirements for an adaptive Inlet Guide Vane. Relations to currently available actuator technology are given and structural concepts are derived for the application in compressors. The main focus is on investigations of a novel o w control concept to allow a structural ’morphing’ and thus changing the aerodynamic characteristic of the airfoils.

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