Propeller-Flexible Wing Interaction Using Rapid Computational Methods

摘要

A fast, accurate and robust methodology to evaluate the effects of propeller slipstream and in-plane forces (1P forces) on a flexible wing is presented. Special emphasis is placed on coupling between the aerodynamic and structural model. An iterative method is developed, using multiple aerodynamic databases in conjunction with propeller induced velocities obtained by means of blade element theory, a lifting line model to propagate the effects of the propeller velocities along the span, and flexibility effects included via coupling with a beam stick model. A validation study using this method to compute the flexible wing loading on a transport aircraft is presented, and the distribution compared with Wind Tunnel (WT) data. The results obtained demonstrate the applicability of this method in early stages of aircraft design.