Cover image for Helicopter flight dynamics : the theory and application of flying qualities and simulation modelling
Helicopter flight dynamics : the theory and application of flying qualities and simulation modelling
Personal Author:
2nd ed.
Publication Information:
Oxford : Blackwell Publishing, 2007


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30000010145201 TL716 P23 2007 Open Access Book Book

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The behaviour of helicopters is so complex that understanding thephysical mechanisms at work in trim, stability and response, andthus the prediction of Flying Qualities, requires a framework ofanalytical and numerical modelling and simulation. Good FlyingQualities are vital for ensuring that mission performance isachievable with safety and, in the first edition of HelicopterFlight Dynamics, a comprehensive treatment of design criteria waspresented. In this second edition, the author complements this witha new Chapter on Degraded Flying Qualities, drawing examples fromflight in poor visibility, failure of control functions andencounters with severe atmospheric disturbances. Fully embracingthe consequences of Degraded Flying Qualities during the designphase will contribute positively to safety.

The accurate prediction and assessment of Flying Qualities drawson the modelling and simulation discipline on the one hand andtesting methodologies on the other. Checking predictions in flightrequires clearly defined ?mission-task-elements?,derived from missions with realistic performance requirements. Highfidelity simulations also form the basis for the design ofstability and control augmentation systems, essential forconferring Level 1 Flying Qualities. The integrated description offlight dynamic modelling, simulation and flying qualities forms thesubject of this book, which will be of interest to engineers inresearch laboratories and manufacturing industry, test pilots andflight test engineers, and as a reference for graduate andpostgraduate students in aerospace engineering.

The Author

Gareth Padfield, a Fellow of the Royal Aeronautical Society, isthe Bibby Professor of Aerospace Engineering at the University ofLiverpool. He is an aeronautical engineer by training and has spenthis career to date researching the theory and practice of flightfor both fixed-wing aeroplanes and rotorcraft. During his yearswith the UK?s Royal Aircraft Establishment and DefenceEvaluation and Research Agency, he conducted research intorotorcraft dynamics, handling qualities and flight control. Hiswork has involved a mix of flight testing, creating and testingsimulation models and developing analytic approximations todescribe flight behaviour and handling qualities. Much of hisresearch has been conducted in the context of internationalcollaboration ? with the Technical Co-operation Programme,AGARD and GARTEUR as well as more informal collaborations withindustry, universities and research centres worldwide. He is veryaware that many accomplishments, including this book, could nothave been achieved without the global networking that aerospaceresearch affords. During the last 8 years as an academic, theauthor has continued to develop his knowledge and understanding inflight dynamics, not only through research, but also throughteaching the subject at undergraduate level; an experience thataffords a new and deeper kind of learning that, hopefully, readersof this book will benefit from.

Author Notes

Gareth Padfield CEng, PhD, FRAeS is Professor of Aerospace Engineering, University of Liverpool.

Table of Contents

Helicopter flight dynamics: an introductory tour
Modelling helicopter flight dynamics: building a simulation model
Modelling helicopter flight dynamics: trim and stability analysis
Modelling helicopter flight dynamics: stability under constraint and response analysis
Flying qualities: objective assessment and criteria development
Flying qualities: subjective assessment and other topics
Flying qualities: forms of degradation