Development of a Generic Helicopter Mathematical Model for Application to Inverse Simulation. Internal Report No. 9216

Thomson, D. G. (1992) Development of a Generic Helicopter Mathematical Model for Application to Inverse Simulation. Internal Report No. 9216. Technical Report. Department of Aerospace Engineering, University of Glasgow.

[img]
Preview
Text (scanned version of the original print report)
184025.pdf - Published Version

39MB

Abstract

This paper describes the development of a non-linear, generic mathematical model of a single main and tail rotor helicopter suitable for use in an inverse simulation. Multiblade representations of the main and tail rotors are used, each blade being assumed rigid and to have constant chord and profile. The flow around the blades is assumed to be steady and incompressible allowing two-dimensional aerodynamic theory to be applied in calculating the blade aerodynamic loads. Main rotor flapping is modelled by use of a centre-spring representation of the rotor disc. The fuselage, tailplane and fin aerodynamic forces and moments from were obtained from ”look-up” tables supplied by the Defence Research Agency (Bedford). The rotor model was derived using the computer algebra package, Mathematica that has allowed many of the terms normally disregarded for simplicity, to be retained. The derivation of the rotor model is dealt with in detail. Results are given for vehicle trim calculations and non-linear time responses to control input as well as some inverse simulations.

Item Type:Research Reports or Papers (Technical Report)
Status:Published
Glasgow Author(s) Enlighten ID:Thomson, Dr Douglas
Authors: Thomson, D. G.
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Publisher:Department of Aerospace Engineering, University of Glasgow
Copyright Holders:Copyright © 1996 Department of Aerospace Engineering, University of Glasgow
Publisher Policy:Reproduced with the permission of the Department

University Staff: Request a correction | Enlighten Editors: Update this record