1、BRITISH STANDARD AEROSPACE SERIES BS EN 2348:1989 Specification for Control cable assemblies Technicalspecification This European Standard EN 2348 has the status of a British Standard. UDC 629.7.05:621.854.002.72:621.85.053:658.56BSEN2348:1989 This British Standard, having been prepared under the di
2、rectionof the Aerospace Standards Policy Committee, waspublished under the authorityof the Board of BSIand comes into effect on 29 September 1989 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/14 Draft for comment 88/70401 DC ISBN 0 580 17621 5
3、Cooperating organizations The European Committee for Standardization, under whose supervision this European Standard was prepared, comprises the national standards organizations of the following Western European countries. Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalis
4、ation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di
5、 Unificazione Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus de Qualidade Spain Instituto Espaol de Normalizacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Stand
6、ards Institution Amendments issued since publication Amd. No. Date of issue CommentsBSEN2348:1989 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Brief history 2 Text of EN 2348 3 National appendix A Inside back cover National appendix B Inside back cove
7、rBSEN2348:1989 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of EN2348 “Aerospace series. Control cable assemblies. Technical specification”, published by the European Commi
8、ttee for Standardization (CEN). EN2348 was produced as a result of international discussion in which the UK took an activepart. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Complia
9、nce with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 8, an inside back cover and a back cover. This standard has been updated (see copyright d
10、ate) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2348 September 1988 UDC: 629.7.05:621.854.002.72:621.85.053:658.56 Key words: Aircraft industry, flight control, flexible cable,
11、 cable-ends, specification English version Aerospace series Control cable assemblies Technical specification Srie arospatiale Cbles de commandes quips Spcification technique Luft- und Raumfahrt Seilzge fr Flugzeugsteuerungen Technische Lieferbedingungen This European Standard was accepted by CEN on
12、1988-03-17. CEN members are bound to comply with the requirements of CEN Internal 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
13、may be obtained on application to the CEN Central Secretariat or to any CEN member. 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 C
14、ENCentral Secretariat has the same status as the official versions. CEN members are the national standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committe
15、e for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1988 Copyright reserved to all CEN members Ref. No. EN 2348:1988 EEN2348:1988 BSI 12-1999 2 Brief history This draft European Standard has been prepared by
16、 the European Association of Aerospace Manufacturers (AECMA). After enquiries and votes carried out in accordance with the rules of this Association, this draft has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to it
17、s presentation toCEN. In accordance with the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. Cont
18、ents Page Brief history 2 1 Scope and field of application 3 2 References 3 3 Definitions 3 4 Required characteristics and test methods 3 5 Quality assurance 7 6 Acceptance 8 7 Marking and packaging 8 8 Certificate of conformity 8 Figure 1 (for cable ends EN 2357, EN 2358, EN 2359, EN 2360) 5 Figure
19、 2 (for cable end EN 2362) 6 Figure 3 (for cable end EN 2361) 6 Figure 4 6 Figure 5 6 Table 1 4 Table 2 6 Table 3 7 Table 4 8 Table 5 8EN2348:1988 BSI 12-1999 3 1 Scope and field of application This standard specifies the characteristics of control cable assemblies in accordance with EN2641 for aero
20、nautical applications. 2 References ISO 2020, Aerospace series Mechanical system parts Preformed flexible steel wire rope for aircraft controls Technical specification. EN 2000, Aerospace series Quality assurance requirements for the manufacture and procurement of EN aerospace standard products. EN
21、2357, Aerospace series Stud-ends, in corrosion resisting steel, swaged on type, control cable Dimensions and loads. EN 2358, Aerospace series Eye-ends, in corrosion resisting steel, swaged on type, control cable Dimensions and loads. EN 2359, Aerospace series Fork-ends, in corrosion resisting steel,
22、 swaged on type, control cable Dimensions and loads. EN 2360, Aerospace series Fork-ends, in corrosion resisting steel, swaged on type, control cable, for rolling bearings Dimensions and loads. EN 2361, Aerospace series Ball-ends, in corrosion resisting steel, double shank, swaged on type, control c
23、able Dimensions and loads. EN 2362, Aerospace series Ball-ends, in corrosion resisting steel, swaged on type, control cable Dimensions dans loads. EN 2641, Aerospace series Control cable assemblies Combinations and dimensions. 3 Definitions 3.1 production batch a production batch shall consist of co
24、ntrol cable assemblies originating from one production run and one composition,i.e: with cables from one reel (i.e.one material and one nominal diameter) with the same end definitions 3.2 sample the sample shall consist of: either a control cable assembly taken out at random from the batch or a test
25、 specimen consisting of: a cable of a minimum length of500mm, of the same characteristics as the bare cable used in the control cable assembly and originating from the same reel; cable ends swaged on the cable under the same swaging conditions as for the control cable assemblies of the batch The swa
26、ging shall be produced during production of the batch in question and under the same conditions of manufacture as this batch. NOTEIf a cable assembly comprises two extremity cable ends and one intermediate cable end (EN2361), each sample will consist of two test specimens on the ends of which the fo
27、llowing will be swaged: one of the extremity cable ends; one intermediate cable end EN2361 (seeFigure 3). 4 Required characteristics and test methods The required characteristics and test methods are specified inTable 1. The cable shall never be degreased (see ISO2020).EN2348:1988 4 BSI 12-1999 Tabl
28、e 1 Clause Characteristic Requirements Test methods A a Q a 4.1 Composition of the control cable assembly The control cable assembly shallhaveacomposition in accordancewith its codified designationaccording to EN2641. Visual inspection. X X 4.2 External appearance No crack, distrosion or burrispermi
29、tted. The presenceofamark made by abluntended punch is permissibleonthe cable end. Thispunch mark isapplied beforeswaging to keep the cableinserted in the cable end. Visual inspection. X X 4.3 Swaged part 4.3.1 Dimensions See Figure 1, Figure 2 and Figure 3 and Table 2 Usual measuring instruments. X
30、 X 4.3.2 Penetration length “X” of the cable in the cable end See Figure 1. The inspection is carried out as follows: either by an X-ray examination or by the method shown in Figure 5. X X 4.3.3 Internal defects See Figure 4. After swaging: The following shall be carried out on a cross section of th
31、e swaged part: no crack or fold shall be visibletothe naked eye an examination of the crosssection with the nakedeye X X no cracks exceeding 150 4m indepth, not more than 6 cracks of40to1504m deep shall be visible micrographic examination with 100 min. magnification. 4.4 Length L sof the cable assem
32、bly Conforming to EN 2641. Unless otherwise specified the length L sof the cable assembly is measured the cable being pulled horizontally by a force of50 N. X X a A = Acceptance test Q = Qualification testEN2348:1988 BSI 12-1999 5 Table 1 Clause Characteristic Requirements Inspection and test method
33、s A a Q a 4.5 Mechanical properties X X 4.5.1 Behaviour under a load of 60 % of the minimum breaking strength of the cable Under a load of at least 60 % of the minimum breaking strength of the concerned cable specified in ISO 2020 no slippage of the cable shall occur in the cable end be, no broken w
34、ires shall be visible or detected by touch. It is mandatory that the test is carried out with the cable in a straight line. The load shall be applied continuously and progressively (duration: 3 s). The load shall be maintained for 5 s and then reduced gradually to zero. Any sudden change in the load
35、 recorded during this test shall be considered indicative of possible slippage in the swaged part and shall result in a very strict inspection of the cable assembly and of its length L s . After this test the control cable assembly shall be examined carefully. 4.5.2 Behaviour under minimum breaking
36、strength of the cable No slippage of the cable in the cable ends is admissible under the minimum breaking strength of the concerned cable specified in ISO 2020. The failure of the control cable assembly shall only take place under a load equal or above the minimum breaking strength. The fracture sha
37、ll not take place in or close to the cable end. The load shall be applied continuously and progressively up to 80 % of the cable minimum failure load. The remaining load shall be applied slowly at a rate of approximately 10 N/s. The absence of slippage shall be checked by visual inspection. X X Figu
38、re 1 (for cable ends EN 2357, EN 2358, EN 2359, EN 2360)EN2348:1988 6 BSI 12-1999 Table 2 Figure 2 (for cable end EN 2362) Figure 3 (for cable end EN 2361) Figure 4 The length X is checked with a mark applied to the cable before swaging. No trace of bare cable shall appear between the mark and the c
39、able end after swaging. The choice of mark (paint, adhesive tape, etc.) is left to be manufacturers discretion. Figure 5 Dimensions in millimetres Nominal cable diameter J s a X min. a D s 0 0,12 C s b Y max. M s max. 0,12 tol. 1,6 3,50 18 4,5 4,83 2,84 0 0,12 4 10 2,4 4,83 21 5 6,43 3,63 6 15,5 3,2
40、 5,56 27 6,4 8,00 4,83 8 20 4,0 6,35 33 8 9,63 5,64 10 26 4,8 7,95 34 7,3 11,23 6,48 12 30 5,6 9,52 39 8,4 12,83 7,67 0 0,17 14 35 6,4 11,12 43 8,4 14,40 8,84 16 41 a Required over the length X (see Figure 1) b Required over the length Y (see Figure 2)EN2348:1988 BSI 12-1999 7 5 Quality assurance 5.
41、1 Manufacturers approval See EN2000 5.2 Product qualification The manufacturer shall obtain separate qualification for each control cable diameter in the following3combinations of cable ends: 1) cable ends EN2357 or EN2358 or EN2359 or EN2360 at both ends 2) cable end EN2357 or EN2358 or EN2359 or E
42、N2360 at one end and cable end EN2361 or EN2362 at the other end. 3) cable end EN2361 at one end and cable end EN2362 at the other. Six control cable assemblies (2in each of the above definitions) for a cable assembly of a given nominal diameter are required for the inspections and tests given inTab
43、le 3. 5.3 Inspection and tests required SeeTable 3 Table 3 Sequence Characteristics specified in: Sequence number of test specimen a 1 2 3 4 5 6 1 Composition of the control cable assembly 4.1 X X X X X X 2 External appearance 4.2 X X X X X X 3 Length L sof the cable assembly 4.4 X X X X X X 4 Dimen
44、sions of swaged part 4.3.1 X X X X X X 5 Penetration length “X” of the cable in the cable end 4.3.2 X X X X X X 6 Behaviour under a load of 60 % of the minimum breaking strength of the cable 4.5.1 X X X X X X 7 Behaviour under minimum breaking strength of the cable 4.5.2 X X X 8 Internal defects 4.3
45、.3 X X X a Test specimen N . 1 and 4 consist of: a cable of a given diameter at least 500 mm in length, cable ends EN 2357 or EN 2358 or EN 2359 or EN 2360 at both ends. Test specimen N . 2 and 5: a cable of a given diameter at least 500 mm in length, cable end EN 2357 or EN 2358 or EN 2359 or EN 23
46、60 at one end, cable end EN 2361 or EN 2362 at the other end. Test specimen N . 3 and 6: a cable of a given diameter at least 500 mm in length, cable end EN 2361 at one end and cable end EN 2362 at the other.EN2348:1988 8 BSI 12-1999 Table 4 Table 5 6 Acceptance 6.1 Manufacturers responsibility See
47、EN2000. 6.2 Inspections and tests required SeeTable 4. 7 Marking and packaging 7.1 Marking of control cable assemblies In addition to the manufacturers own marking, each control cable assembly shall be marked, using the identity block according to EN2641. This marking shall: either be punched on a t
48、ab threaded over the cable before the last cable end is swaged, or be engraved on a sleeve fitted over the swaged part of the cable end, or be printed indelibly on one of the two cable ends (ink, chemical etching, etc) without this being liable to affect the strength or reduce the life of the fitted
49、 cable. The inspection stamp shall also be included in the marking. 7.2 Packaging Each control cable assembly is inserted in an individual greaseproof paper package, carefully sealed: either in straight line, or in a coil of a diameter of at least150times the diameter of the cable. The package depends on the possibility of bending and shall take place so that no damage can occur during transport. The following information shall be the mi
