Modeling of Complex Systems E-Book

Emanuel Grunn

• Herausgeber: John Wiley & Sons
• Kategorie: Fachliteratur
• Sprache: Englisch

Seitenzahl: 55

Veröffentlichungsjahr: 2013

Beschreibung

In the field of aeronautical dynamics, this book offers readers a design tool which enables them to solve the different problems that can occur during the planning stage of a private project. The authors present a system for the modeling, design and calculation of the flying qualities of airplanes and drones, with a complete mathematical model by Matlab/Simulink. As such, this book may be useful for design engineers as well as for keen airplane amateurs. The authors expound the various phases involved in the design process of an airplane, starting with the formulation of a design tool, under the form of a 0D mathematical model (dimensionless, time dependent), before moving on to explore the behavior of the airplane under certain circumstances and offering insights into the optimization of airplane flying qualities. As validation of this model, they present a numerical result, drawn from data collected on an existing plane - the Concorde. The dimensional process is then explored and applied to a realistic drone project. Recommendations on the development of the principal characteristics of the plane (i.e. mass distribution, air load, wing span) are given. Contents 1. 0D Analytical Modeling of theAirplane Motions. 2. Design and Optimizationof an Unmanned Aerial Vehicle (UAV). 3. Organization of the Auto-Pilot. This book provides a description of the modeling, design, and calculation of the aeronautical qualities of airplanes and drones. Divided into several parts, this book first summarizes all the necessary theoretical developments about the equations of motions and trajectory calculations of the machine. It then goes on to describe practical building processes and considers piloting methods. The last part makes a comparison between theoretical calculations and measured recorded data of the real flying machine. Accompanied by a complete mathematical model in MATLAB/SIMULINK

Leseprobe

Table of Contents

Introduction

Chapter 1: 0D Analytical Modeling of the Airplane Motions

1.1. References: axis systems on use

1.2. Equations of motion of the airplane

1.3. Description of external forces and torques

1.4. Description of aerodynamic coefficients

1.5. Aerodynamic data of a supersonic airliner for valuation of the software

1.6. Horizontal flight as an initial condition

1.7. Effect of gravitational forces

1.8. Calculation of the trajectory of the airplane in open space

1.9. Validation by comparison with ONERA Concorde data

1.10. Definitions of aerodynamic coefficients and derivatives

Chapter 2: Design and Optimization of an Unmanned Aerial Vehicle (UAV)

2.1. General design of the drone

2.2. Weight estimation

2.3. Size estimation

2.4. Mass and inertia evaluation

2.5. Convergence toward the target

Chapter 3: Organization of the Auto-Pilot

3.1. Position of the drone in open space

3.2. The Dog Law

3.3. Flight tests

3.4. Altitude control system

3.5. Altitude measurement on an actual drone

Bibliography

Index

First published 2013 in Great Britain and the United States by ISTE Ltd and John Wiley & Sons, Inc.

Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the Copyright, Designs and Patents Act 1988, this publication may only be reproduced, stored or transmitted, in any form or by any means, with the prior permission in writing of the publishers, or in the case of reprographic reproduction in accordance with the terms and licenses issued by the CLA. Enquiries concerning reproduction outside these terms should be sent to the publishers at the undermentioned address:

ISTE Ltd27-37 St George’s RoadLondon SW19 4EUUK

John Wiley & Sons, Inc.111 River StreetHoboken, NJ 07030USA

www.iste.co.uk

www.wiley.com

© ISTE Ltd 2013

The rights of Emmanuel Grunn and Anh Tuan Pham to be identified as the author of this work have been asserted by them in accordance with the Copyright, Designs and Patents Act 1988.

Library of Congress Control Number: 2013945048

British Library Cataloguing-in-Publication DataA CIP record for this book is available from the British LibraryISBN: 978-1-84821-448-4

Introduction

The development of an airplane project closely follows a design process which defines the characteristics required to achieve the performance expectations and the desired flying criteria.

The principal purpose of this book is to offer readers a design tool which enables them to solve the different problems that can occur during the planning phase of a private project. As such, this book may be useful for design engineers as well as for keen airplane amateurs.

For the purpose of this book, we will assume that the preliminary design has been established and that an overall drawing, detailing the general shape of the airplane (i.e. surfaces, wingspan, aspect ratios, different levers, wing and stabilizer sections, as well as engine power requirements), has been completed.

In the following chapters, we will focus our attention on the dynamic behavior of the plane.

The study of flying qualities makes use of a special mathematical tool known as MATLAB/SIMULINK, outlined in Chapter 1, entitled “0D Analytical Modeling”.

We shall now list the various phases which occur during the design process of an airplane.

Chapter 1

– Building a design tool under the form of a 0D mathematical model (dimensionless, time dependent only);

– describing the behavior of the plane;

– helping to optimize the flying qualities.

As validation of this model, a numerical result is given with data from an existing plane (Supersonic airliner CONCORDE, with data supplied by Office National de Recherche Aerospatiale (ONERA, French Aerospace Research Office and Sud-Aviation).

Chapter 2

Dimensional process, leading to presumed principal characteristics of the plane:

– mass distribution, inertial matrix;

– air loads, wing and stabilizer areas, wingspan, pitch and yaw levers, all data conditioning the flying qualities of the plane;

– selection of wing and stabilizer airfoils;

– outlining all necessary aerodynamic coefficients or derivatives, as well as all coupling terms;

– application to a realistic drone project.

Chapter 3

– Tuning the balancing equilibrium state of the plane to reach the previous objectives;

– flight tests.