ISO INTERNATIONAL STANDARD 1151-3 Secondedition 1989-04-01 Flight dynamics --- Concepts, quantities and symbols Part 3 : Derivatives of forces, moments. and their coefficients Mecaniqueduvol-Concepts,grandeursetsymboles- Partie 3 : Derivees des forces, des moments et de leurs coefficients Reference number ISO 1151-3 : 1989 (E) ISO1151-3:1989(E) Contents Page Foreword ili 3.0 Introduction . 3.1 Functions and independent variables 3.1.1 Functions and classes of derivatives. 3.1.2 Independent variables 2 3.2 Direct derivatives. 2 3.3 Specific derivatives 3 3.3.1 Specific force derivatives 4 3.3.2 Specific moment derivatives 5 3.4 Normalizedderivatives 6 3.5 Coefficient derivatives. 8 ?ISO1989 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. InternationalOrganizationforStandardization Case postale 56. CH-1211 Geneve 20 . Switzerland Printed in Switzerland ISO 1151-3 : 1989 (E) Foreword national standards bodies (ISO member bodies). The work of preparing international Standards is normally carried out through ISo technical committees. Each member body interested in a subject for which a technical committee has been established has mental and non-governmental, in liaison with ISO, also take part in the work. Iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISo Council. They are approved in accordance with ISo procedures requiring at International Standard ISO 1151-3 was prepared by Technical Committee ISo/TC 20, Aircraft and space vehicles. This second edition cancels and replaces the first edition (ISo 1151-3 : 1972), of which it constitutes a technical revision. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. ii