Numerical and Experimental Investigation of the Aerodynamics of Double Membrane Sailwing Airfoil Sections

摘要

In actual applications of the sailwing, the following phenomena play an important role: the trailing edge of the sailwing, which consists of a cable, will move towards the leading edge when the wing is loaded. Therefore, highly cambered profiles may occur, and the shape of the profile is very sensitive to the sail lengths, so, the elasticity of the sail will have a marked influence on the shape of the profile. A simple numerical method is presented which can estimate the performance of both slightly - and highly - cambered double membrane sailwing profiles. It also takes elasticity into account. Using this method, a parameter study has been performed.