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Predictive inverse simulation of helicopters in aggressive manoeuvring flight

Published online by Cambridge University Press:  27 January 2016

M. Bagiev ,
D. G. Thomson ,
D. Anderson  and
D. Murray-Smith
M. Bagiev
Affiliation:
Department of Aerospace Engineering, University of Glasgow, Glasgow, UK
D. G. Thomson
Affiliation:
Department of Aerospace Engineering, University of Glasgow, Glasgow, UK
D. Anderson
Affiliation:
Department of Aerospace Engineering, University of Glasgow, Glasgow, UK
D. Murray-Smith
Affiliation:
Department of Electronics and Electrical Engineering, University of Glasgow, Glasgow, UK
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Abstract

A conventional inverse simulation does not accommodate control constraints; hence for aggressive manoeuvring flight conditions, where control inputs are close to the limits, these algorithms lose some of their applicability. A modification of the conventional inverse simulation technique that accommodates the onset of physical limits or constraints is proposed in this paper. In this way a process of constraints handling is incorporated into the inverse simulation algorithm. Therefore, the aim of this paper is to demonstrate that conventional inverse simulation can be improved in terms of the realism of the results by applying a predictive capability for applications involving manoeuvring flight. The paper gives details of the development of the predictive inverse simulation algorithm and helicopter model used and, by presenting examples of results calculated for pop-up and lateral realignment manoeuvres demonstrates that a ‘receding horizon’ predictive approach offers improvements in the realism of inverse simulation results.

Type
Research Article
Information
The Aeronautical Journal , Volume 116 , Issue 1175 , January 2012 , pp. 87 - 98
Copyright
Copyright © Royal Aeronautical Society 2012 

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