DGLR-Publications Database - Detailview

Title:

Effect of Torsional Flexibility on an Unmanned Helicopter Performance Including Compressibility Effect

Author(s):
A.F. Uzunkaya, Y. Yaman
Abstract:
In this study, torsional deformation of an unmanned helicopter and its effect on the performance characteristics are examined. In the analyses, blade-element momentum theory is used for the calculation of the aerodynamic loads by implementing compressibility corrections. For the interactions between the aerodynamic loads and torsional deformations, an iterative solution procedure is developed. To obtain the trim points of the helicopter, a trim code is written in which blade is modeled as either rigid or elastic in the torsional direction. It is found that there occur some differences between the rigid and elastic blade in terms of the control inputs. However, since the aerodynamic center is close to the shear center of the reference blade, the difference is found to be negligible small. Therefore, effects of the torsional deformations on the helicopter control and performance are minimal.
Event:
49th European Rotorcraft Forum 2023, Bückeburg, 2023
Mediatype:
Conference Paper
Language:
englisch
Format:
21,0 x 29,7 cm, 9 Pages
Published in:
DGLR-Bericht, 2023, 2023-01, 49th European Rotorcraft Forum 2023 - Proceedings; S.1-9; 2023; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn
Price:
NA
ISBN:
ISSN:
Comment:
Classifikation:
Keywords:
Available:
Bestellbar
Published:
2023


This Document is part of a superordinate publication:
49th European Rotorcraft Forum 2023 - Proceedings