Y.K. Yillikci

A simplified trimming process for rotors with periodic trailing edge flap motions is developed. In this process, first collective and cyclic pitch control inputs are calculated by the use of standard helicopter trim equations. At the second stage, pitch motions are replaced with periodic trailing edge flap (TEF) motions represented up to the first harmonics. For the TEF case only rigid collective and pretwist angles are retained. The trailing edge flap motion harmonics are calculated based on the idea that TEF control must achieve identical trust harmonics of the pitch control case. Sample results for a small remotely controlled helicopter configuration with trailing edge flap controls are presented. Different flap geometries are investigated and ETF concept is evaluated.

17th European Rotorcraft Forum 1991, Berlin

Conference Paper

englisch

21,0 x 29,7 cm, 14 Seiten

DGLR-Bericht, 1991, 1991-08, 17th European Rotorcraft Forum Proceedings; 1991; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

Dieser Aufsatz ist nicht Teil der Veröffentlichung!

aerodynamics, flaps (control surfaces), helicopters, rotors, trailing edges

Bestellbar

1991