Elastomeric Actuators on Airfoils for Aerodynamic Control of Lift and Drag

Abstract

This paper investigates and characterizes the aerodynamic performance of a unique platform of airfoils with inflatable, elastomeric actuators. By controlling the actuators integrated in 3D‐printed airfoils, it is possible to manipulate aerodynamic lift and drag. The pseudo flap can increase lift by a factor of 20–300%. The top‐front inflated design increases lift and stalling angle at high angles of attack (>12°). Comparisons between numerical simulations and experiments verify the efficacy of the outlined approach. This work is the first to describe the dynamic fluid–soft material interactions for both lift and drag of inflatable actuators embedded in stiff structures.