1、BRITISH STANDARD AEROSPACE SERIES Elements of electrical and optical connection Test methods Part 421: Free fa11 The European Standard EN 2591-421:2002 has the status ofa British Standard ICs 49.060 BS EN 2591421:2002 WkNb A%“ U- rn% E rn NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPY
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3、e can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using
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5、om legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publicat
6、ion Amd.No. I Date I Comments O BSI 5 July 2002 ISBN O 580 39949 4 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2591-421 June 2002 ICs 49.060 English version Aerospace series - Elements of electrical and optical connection - Test methods - Part 421 : Free fall Srie arospatiale - Organes de c
7、onnexion lectrique et optique - Mthodes dessais - Partie 421: Chute libre Luft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prfverfahren - Teil 421 : Freier Fall This European Standard was approved by CEN on 8 February 2002 CEN members are bound to comply with the CENKENELEC Inter
8、nal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member.
9、This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are t
10、he national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG
11、 COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2002 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2591-421:2002 E EN 2591-421 :2002 (E) Foreword This document (EN 2591-421 :2002) has been
12、 prepared by the European Association of Aerospace Manufacturers (AECMA). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to
13、its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2002, and conflicting national standards shall be withdrawn at the latest by December 2002. According to the CENKE
14、NELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sw
15、eden, Switzerland and the United Kingdom 2 EN 2591-421 :2002 (E) 1 Scope This standard specifies a method of verifying the ability of an element of connection to withstand shock when submitted to repeated falls. It shall be used together with EN 2591-100. 2 Normative references This European Standar
16、d incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to thi
17、s European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2591-100 EN 2591-101 EN 2591-408 Aerospace series - Elements of electrical and optical connection - Test methods - Part 100: General 1) Aero
18、space series - Elements of electrical and optical connection - Test methods - Part 1 O1 : Visual examination Aerospace series - Elements of electrical and optical connection - Test methods - Part 408: Mating and unmating forces 3 Preparation of specimens Non-mated and non-wired specimens shall be fi
19、tted with their normal accessories as specified. Unless specified in the technical specification, the following details shall be stated: - type of accessory; - number of revolutions if different from 50. 1) Published as AECMA Prestandard at the date of publication of this standard 3 EN 2591-421 :200
20、2 (E) 4 Apparatus A drum such as defined by figure 1. Steel plate 3 mm thick +- 5 Method 4 275 c c c c 4 375 390 425 4 4 Figure 1 / 1 5 5.1 Procedure The specimens shall be put into the drum which rotates at a speed of about five revolutions per minute. Unless otherwise indicated in the technical sp
21、ecification, the number of revolutions (falls) shall be 50. 5.2 Final measurements (if applicable) - EN 2591-101; - EN 2591-408. 4 BS EN 259 1-42 1 12002 B SI 389 Chiswick High Road London w4 4AL BSI -British Standards Institution BSI is the independent national body responsible for preparing Britis
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