ISO INTERNATIONAL STANDARD 2669 Secondedition 1995-04-15 Environmental tests for aircraft equipment - Steady-state acceleration Essais en environnement des équipements aéronautiques - Essais d'accélération constante ISO Reference number ISO26691995(E) No reproduction or networking permitted without license from IHS Not for Resale ISO2669:1995(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through Iso represented on that committee. international organizations, governmental collaborates closely with the International Electrotechnical Commission (iEC)onallmattersofelectrotechnicalstandardization. circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. ISO/TC 20,Aircraft and space vehicles,Subcommittee SC 5,Environ- mental and operational conditions for aircraft equipment. This second editioncancelsandreplaces the first edition (ISO 2669:1978), of which it constitutes a technical revision. Annex A forms an integral part of this International Standard. ISO1995 All rights reserved Unless otherwise specified, 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 CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland Copyright lntenational Organization for Standardization No reproduction or networking permitted without license from IHS Not for Resale CISO ISO2669:1995(E) Introduction performance characteristics and to confirm the structural integrity and safety of airborne equipment and airborne equipment mountings when they are subjected to gradually changing acceleration forces generated by an aircraft manceuvre such as turn, pull-out, roll, etc. For example, the tests would be expected to indicate' a) any change in operating state and any variations in performance; b) any jamming occurring in moving parts and any variation in their path; C) any reduction in the free travel and change in the suspension charac- teristics of the anti-vibration mountings that could damage the oper- ating state and capability of anti-vibration, d) any breakage or any weakness in the fastenings mounting devices or structure of the equipment that could constitute a hazard to the aircraft or its occupants. ili r Standardizatior No reproduction or networking permited without license from IHS Not for Resale