Method of Controlling Stiffness Properties of a Solid-construction Model Wing

Résumé du livre

A simple method is presented for controlling the bending and torsional stiffness of a solid-construction model wing. The method consists of weakening the wing by drilling holes through the wing normal to the chord plane. Aerodynamic continuity is maintained by filling the holes with a relatively soft material. The important parameters controlling the stiffnesses are the amount of material removed by drilling, the ratio of hold diameter to wing thickness, and the plan-from pattern of the holes. Data are given which may be used for predicting the stiffness of a model wing weakened in this manner.