1、BRITISH STANDARD AEROSPACE SERIES BS EN 2289:1996 Rod bodies in aluminium alloy for flight controls Technical specification The European Standard EN 2289:1996 has the status of a British Standard ICS 49.040.30BSEN2289:1996 This British Standard, having been prepared under the direction of the Engine
2、ering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1996 BSI 11-1998 The following BSI references relate to the work on this standard: Committee reference ACE/14 Draft for comment 90/73743 DC ISBN 0 580 26346 0 Committees responsible for
3、this British Standard The preparation of this British Standard was entrusted to Technical Committee ACE/14, Aerospace details and parts, upon which the following bodies were represented: British Iron and Steel Producers Association Civil Aviation Authority (Airworthiness Division) Federation of Wire
4、 Rope Manufacturers of Great Britain Institute of Petroleum Ministry of Defence Society of British Aerospace Companies Amendments issued since publication Amd. No. Date CommentsBSEN2289:1996 BSI 11-1998 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 Scope
5、 3 2 Normative references 3 3 Definitions 3 4 Required characteristics, inspection and test methods 4 5 Quality assurance 8 6 Packaging 9 7 Certificate of conformity 9 Figure 1 Position of transverse cut sections 7 Figure 2 Defects permitted in a cut section in threaded area 8 Table 1 Untitled 4 Tab
6、le 2 Rotational torques 8 Table 3 Non-destructive inspections and tests to be carried out for qualification 9 Table 4 Destructive inspections and tests to be carried out for qualification 9 Table 5 Non destructive inspections and tests to be carried out for acceptance 10 Table 6 Destructive inspecti
7、ons and tests to be carried out for acceptance 10 List of references Inside back coverBSEN2289:1996 ii BSI 11-1998 National foreword This British Standard has been prepared by Technical Committee ACE/14 and is the English language version of EN2289:1996 Aerospace series Rod bodies in aluminium alloy
8、 for flight controls Technical specification, published by the European Committee for Standardization (CEN). EN 2289:1996 was produced as a result of international discussions in which the United Kingdom took an active part. A British Standard does not purport to include all the necessary provisions
9、 of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred to Corresponding British Standard ISO 2409:1992 BS EN ISO 2409:1995 Paints and
10、 varnishes. Cross-cut test BS 6293 Aerospace. MJ threads ISO 5855-1:1988 Part 1:1994 General requirements ISO 5855-2:1988 Part 2:1994 Limit dimensions for bolts and nuts ISO 9227:1990 BS 7479:1991 Method for salt spray corrosion tests in artificial atmospheres EN 2004-1:1993 BS EN 2004 Test methods
11、for aluminium and aluminium alloy products Part 1:1993 Determination of electrical conductivity of wrought aluminium alloys EN 3042:1991 BS EN 3042:1992 Quality assurance. EN aerospace products. Qualification procedure Summary of pages This document comprises a front cover, an inside front cover, pa
12、ges i and ii, theEN title page, pages 2 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
13、 EN 2289 July 1996 ICS 49.040.30 Descriptors: Aircraft, industry, aircraft control, rod body, specification English version Aerospace series Rod bodies in aluminium alloy for flight controls Technical specification Srie arospatiale Corps de bielle en alliage daluminium pour commandes de vol Spcifica
14、tion technique Luft und Raumfahrt Rohrkrper aus Aluminiumlegierung fr Flugsteuerungen Technische Lieferbedingungen This European Standard was approved by CEN on 1995-12-27. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europe
15、an 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 Central Secretariat or to any CEN member. This European Standard exists in three official versions (English,
16、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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finlan
17、d, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brus
18、sels 1996 Copyright reserved to CEN members Ref. No. EN 2289:1996 EEN2289:1996 BSI 11-1998 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this
19、Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to 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
20、latest by January1997, and conflicting national standards shall be withdrawn at the latest by January1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finl
21、and, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.EN2289:1996 BSI 11-1998 3 1 Scope This standard specifies the required characteristics, inspection and test methods, qualification and acceptance condit
22、ions for flight control rod bodies in aluminium alloy. It is applicable whenever referenced. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the
23、 publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. ISO 24
24、09, Paints and varnishes Cross cut tests. ISO 5855-1, Aerospace MJ threads Part1:General requirements. ISO 5855-2, Aerospace MJ threads Part2:Limit dimensions for bolts and nuts. ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests. EN 2002-7, Aerospace series Test methods for metall
25、ic materials Part7: Hardness test 1) . EN 2002-16, Aerospace series Test methods for metallic materials Part 16: Dye penetrant testing 2) . EN 2004-1, Aerospace series Test methods for aluminium and aluminium alloy products Part1:Determination of electrical conductivity of wrought aluminium alloys.
26、EN 2435-01, Aerospace series Paints and varnishes Corrosion resistant chromated two component cold curing primer Part 01: Minimum requirements 1) . EN 2510, Aluminium alloy 2024-T42 Drawn tubes for structural applications Aerospace series 3) . EN 3042, Aerospace series Quality assurance EN aerospace
27、 products Qualification procedure. ASTM E 112:1984, Standard methods for determining average grain size 4) . 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 Surface discontinuities 3.1.1 crack break in the materials which may extend in all directions and be inte
28、rcrystalline or transcrystalline in character 3.1.2 score, scratch open surface defect 3.1.3 lap surface defect where particles of metal or sharp edges are folded over and then rolled or forged into the surface 3.1.4 seam unwelded fold which appears as an open defect in the material 3.1.5 inclusions
29、 non-metallic particles originating from the material manufacturing process. These particles may be isolated or arranged in strings 3.2 production batch batch consisting of rod bodies bearing the same identity block, manufactured in the same manufacturing cycle from the same batch of semi-finished p
30、roducts 3.3 artificial batch a batch of max. 120 rod bodies which shall satisfy the following conditions: the same diameter D; the same wall thickness a; the same thread (d pitch); manufactured in the same manufacturing cycle from the same batch of semi-finished products. it may consist of several p
31、roduction batches 1) Published as AECMA Prestandard at the date of publication of this standard. 2) In preparation at the date of publication of the present standard. 3) Published as AECMA Standard at the date of publication of this standard. 4) Published by: American Society for Testing and Materia
32、ls (ASTM), 1916 Race Street, Philadelphia, PA19103EN2289:1996 4 BSI 11-1998 4 Required characteristics, inspections and test methods See Table 1. Table 1 Subclause Characteristics Requirements Inspection and test methods Q a A b 4.1 Materials In accordance with the product standards or design docume
33、ntation Chemical analysis or certificate of conformity issued by semi-finished products manufacturer X X 4.1.1 Uniformity of the production batch material after the heat treatment Electrical conductivity: # 18,5 MS/m or EN 2004-1 X X Hardness: 120 HB min. or 96 HRF min. EN 2002-7 Measure in the unsw
34、aged areas ofthe rod body as follows: X X NOTEValues for EN2510 4.1.2 Material grain size # 5 ASTM E 112 X 4.2 Surface treatment In accordance with the product standards or design documentation. Visual examination inside and outside rod body X X 4.2.1 Primer Thickness and adhesion in accordance with
35、 EN2435-01 Cut the rod body longitudinally and check the internal and external surfaces. ISO2409 X X 4.2.2 Corrosion resistance No corrosion ISO9227 Cut the rod body longitudinally. Examine the surfaces visually. Remove the inserts (if fitted) and check the mating surfaces. X 4.3 Dimensions, toleran
36、ces and mass In accordance with the product standards or design documentation Suitable measuring instruments X X 4.4 Surface roughness In accordance with the product standards or design documentation Suitable measuring instruments X X 4.5 Marking In accordance with the product standards or design do
37、cumentation Visual examination X X (continued)EN2289:1996 BSI 11-1998 5 Table 1 Subclause Characteristics Requirements Inspection and test methods Q a A b 4.6 External surface appearance Prior to surface treatment, no discontinuities Visual examination to EN2002-16. If a surface discontinuity is rev
38、ealed in the swaged area, it may be removed by abrading the surface lightly to a depth of less than 10% of the thickness of the rod body. If this does not completely remove the surface discontinuity the rod body shall be rejected. X X 4.7 Internal surface appearance On a longitudinal section, no dis
39、continuity except in the threaded area (see Figure 2) The rod body shall be cut at one end longitudinally and at the other end transversely, seeFigure 1. X X On three transverse sections Visual examination with a magnification of 100times Sections A and B no more than two cracks with a max. depth of
40、 150m or laps of any number permitted providing that the depth does not exceed 0,4mm or 10% of the thickness Section C: No discontinuities are permitted. 4.8 Resistance of threaded inserts to rotation No rotation when torque values from Table 2 are applied The testing device to hold the rod body sta
41、tionary is left to the manufacturers option. Visual examination X X 4.9 Yield load No permanent elongation under the loads given in the product standards or design documentation Fit the rod body with special end fittings in heat treated steel which can be clamped in the jaws of a tensile testing mac
42、hine. The end fittings shall be engaged no more than 1,5times the thread diameter into the rod body. Apply the load progressively up to the yield load and maintain it for at least 3s. Visual examination X X (continued)EN2289:1996 6 BSI 11-1998 Table 1 Subclause Characteristics Requirements Inspectio
43、n and test methods Q a A b 4.10 Ultimate load No failure under the loads given in the product standards or design documentation See 4.9. X X 4.11 Buckling strength No increase in radial runout under the loads taken from the curves given in the product standards or design documentation Use rod bodies
44、 which are as close as possible to the maximum tolerance of the radial runout given in the product standards or design documentation. Fit the rod bodies with rod ends with self-aligning bearings. The pins attaching these ends to the testing machine shall be parallel. Fit the end fittings in accordan
45、ce with 4.9. Apply the load progressively up to 1,25times the value given in the product standards or design documentation, maintain it for3s, then release. X Check. 4.12 Fatigue strength under stress See 4.12.1 and 4.12.2. Apply a fluctuating tensile force F, at a frequency of 30Hz, varying from 0,
46、1 F to F, such that: X F = t S where: F is the tensile force, in newtons; t is the stress, in megapascals; and S = p a (D a) where: S is the cross sectional area of the central cylindrical portion of the rod body, in square millimetres; D is the nominal tube diameter, in millimetres; a is the nomina
47、l tube wall thickness, in millimetres 4.12.1 High load fatigue test Special end fittings, see 4.9. X t = 210 MPa No failure shall be permitted over the first 60000 cycles. The test shall be continued up to failure or 100000 cycles. The average number of cycles achieved shall be $ 80000. See 4.12. (c
48、ontinued)EN2289:1996 BSI 11-1998 7 Table 1 Subclause Characteristics Requirements Inspection and test methods Q a A b 4.12.2 Low load fatigue test Special end fittings, see 4.9. X X t = 100 MPa. No failure shall be permitted over a period of 10 7cycles. On completion, the rods shall be submitted to:
49、 a buckling test; followed by an ultimate load test. The load values for these two tests shall no be less than 75% of the values specified in the product standards or design documentation. See 4.12. See 4.11. See 4.10. Rod bodies with inserts shall be checked for loosening or fretting at the interface. a Q = Qualification test b A = Acceptance test Figure 1 Position of transverse cut sectionsEN2289:1996 8 BSI 11-1998 Table 2 Rotational torques 5 Quality assur
