Helicopter nonlinear aerodynamics modelling using VehicleSim

Castillo-Rivera, S. & Tomas-Rodriguez, M. (2016). Helicopter nonlinear aerodynamics modelling using VehicleSim. Advances in Engineering Software, 100, pp. 252-265. doi: 10.1016/j.advengsoft.2016.08.001

[img]
Preview
Text - Accepted Version
Available under License : See the attached licence file.

Download (2MB) | Preview
[img]
Preview
Text (Creative Commons — Attribution-NonCommercial-NoDerivatives 4.0 International) - Other
Download (206kB) | Preview

Abstract

This work describes a model developed to analyze the aerodynamic loads on a helicopter model on conventional configuration implemented with VehicleSim, a multibody software specialized in modelling mechanical systems composed by rigid bodies. The rotors are articulated and the main rotor implementation takes into account flap, lag and feather degrees of freedom for each of the equispaced blades as well as their dynamic couplings. This article presents an aerodynamic model that allows to simulate hover, climb, descent and forward flight as well as trajectories under the action of several aerodynamics loads. The aerodynamic model has been built up using blade element theory. All the dynamics, aerodynamic forces and control action are embedded in a single code, being this an advantage as the compilation time is greatly reduced. The software used in this work, VehicleSim does not need external connection to other software. This new tool may be used to develop robust control methods. The nonlinear equations of the system which can be very complex, are obtained, in particular, this article presents the equations for flap and lag degrees of freedom in hover flight. The control approach used in here consists of PID controllers (proportional, integral, derivative), which allow to use VehicleSim command exclusively to simulate several helicopter flight conditions. The results obtained are shown to agree with the expected behaviour.

Item Type: Article
Additional Information: Copyright Elsevier 2016. Available under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence.
Uncontrolled Keywords: Helicopter; Aerodynamic; Blade; Element
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: School of Engineering & Mathematical Sciences > Engineering
URI: http://openaccess.city.ac.uk/id/eprint/15800

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics