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A generic control anticipation parameter for aircraft handling qualities evaluation

Published online by Cambridge University Press:  04 July 2016

J. E. Gautrey
Affiliation:
Flight Test and Dynamics Group College of AeronauticsCranfield University Bedfordshire, UK
M. V. Cook
Affiliation:
Flight Test and Dynamics Group College of AeronauticsCranfield University Bedfordshire, UK

Abstract

The established control anticipation parameter longitudinal handling qualities criterion is based on the assumption that the short term dynamic response of the aeroplane is classical, or second-order-like. Modern fly-by-wire aircraft often have longitudinal short term dynamics which are not second-order-like and to which it is difficult to apply the criterion. This paper presents a proposed generic control anticipation parameter which is a modified version of the control anticipation parameter and which may be applicable to both unaugmented and augmented aircraft of all types. The appropriateness of the modified criterion was illustrated by designing a number of command and stability augmentation control laws, constrained to meet the criterion, for application to a medium weight fly-by-wire civil transport aircraft. The handling characteristics conferred by the control laws were assessed in a series of flight simulator trials, the results of which are briefly presented.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society 1998 

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