1、BRITISH STANDARD AEROSPACE SERIES BS EN 2644:1998 Rod assemblies for flight controls Technical specification The European Standard EN 2644:1998 has the status of a British Standard ICS 49.035BSEN2644:1998 This British Standard, having been prepared under the directionof the Engineering SectorBoard,
2、was published underthe authority of the Standards Board and comes into effect on 15 July 1998 BSI 05-1999 ISBN 0 580 31024 9 National foreword This British Standard is the English language version of EN2644:1998. The UK participation in its preparation was entrusted to Technical Committee ACE/14, Ae
3、rospace details and parts, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European d
4、evelopments and promulgate them in the UK. A list of organizations represented on this committee 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 C
5、atalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for the
6、ir correct application. Compliance 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, pagesi andii, the EN title page, pages2to9 and a back cover. This standard has been updated (see copyri
7、ght date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSEN2644:1998 BSI 05-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 2644 3ii blankEU
8、ROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2644 April 1998 ICS 49.035 Descriptors: Aircraft industry, flight control, connecting rods, characteristics, inspection, tests qualification, quality assurance, acceptance testing, marking, packing English version Aerospace series Rod assemblies for
9、 flight controls Technical specification Srie arospatiale Bielles quipes pour commandes de vol Spcification technique Luft- und Raumfahrt Bediengestnge fr Flugsteuerungen Technische Lieferbedingungen This European Standard was approved by CEN on 17 October 1997. CEN members are bound to comply with
10、the CEN/CENELEC 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 may be obtained on application to the Central Secretariat
11、 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 the Central Secretariat has the same status as the official ve
12、rsions. CEN members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Euro
13、pen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2644:1998 EEN2644:1998 BSI 05-1999 2 Foreword This European Standard
14、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 Standard has successively received the approval of the National Associations and the Official Services of the member countrie
15、s 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 latest by October1998, and conflicting national standards shall be withdrawn at the latest by October1998. Accor
16、ding to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portu
17、gal, Spain, Sweden, Switzerland and the UnitedKingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Description 4 4 Required characteristics, inspection and test methods 7 5 Quality assurance 9 6 Identification marking 9 7 Packaging 9 9 Certificate of compliance 9 Figure 1 4 Figure
18、2 5 Figure 3 6 Figure 4 8 Figure 5 Adjustment range 8 Table 1 4 Table 2 5 Table 3 6 Table 4 7 Table 5 Torsion resistance end fitting/rod body 8 Table 6 Adjustment range for length L related to theoretical length L 8 Table 7 Non-destructive tests 9 Table 8 Destructive tests 9EN2644:1998 BSI 05-1999 3
19、 1 Scope This standard specifies the required characteristics, inspections and tests, quality assurance, qualification, acceptance and delivery conditions for rod assemblies for flight controls, consisting of an aluminium alloy rod body and fixed or adjustable rod end fittings. It is applicable when
20、ever 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 publications are listed hereafter. For dated references, subsequent amendme
21、nts 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. EN 2290-1, Aerospace series Rod bodies for flight control, in aluminium alloys, fo
22、r adjustable end fittings Dimensions 1) . EN 2291, Aerospace series Rod assemblies for flight control in aluminium alloys, with one extremity for an adjustable end and one extremity fitted with a fixed single fork end fittings Dimensions 1) . EN 2292, Aerospace series Rod assemblies for flight contr
23、ol in aluminium alloys with fixed single fork end fittings Dimensions 1) . EN 2327, Aerospace series Washers, lock with radial serrations in alloy steel Dimensions. EN 2424, Aerospace series Marking of aerospace products. EN 2492, Aerospace series Rod ends, self-aligning ball bearing with threaded s
24、hank Dimensions and loads 2) . EN 2515, Aerospace series Rod ends, adjustable, single fork and threaded shank Dimensions and loads. EN 2546, Aerospace series Washers, lock with radial serrations in corrosion resisting steel Dimensions. EN 2586, Aerospace series Washers, lock for flight control rods
25、Dimensions. EN 2587, Aerospace series Rod ends, adjustable, double fork and threaded shank Dimensions and loads. EN 2594, Aerospace series Rod assemblies for flight controls, in aluminium alloys with one end for adjustable end fitting and one end with a fixed end fitting with double fork Dimensions
26、1) . EN 2595, Aerospace series Rod assemblies for flight controls, in aluminium alloys with one end for adjustable end fitting and one end with a fixed ball bearing end fitting Dimensions 1) . EN 2596, Aerospace series Washers, lock with radial serrations in corrosion resisting steel cadmium plated
27、Dimensions. EN 2610, Aerospace series Rod assemblies for flight controls in aluminium alloys with ball bearing fixed end fittings Dimensions 1) . EN 2611, Aerospace series Rod assemblies for flight controls in aluminium alloys with one single fork fixed end fitting and one ball bearing fixed end fit
28、ting Dimensions 1) . EN 2612, Aerospace series Rod assemblies for flight controls in aluminium alloys with one double fork fixed end fitting and one ball bearing fixed end fitting Dimensions 1) . EN 2613, Aerospace series Rod assemblies for flight controls in aluminium alloys with one single fork fi
29、xed end fitting and one double fork fixed end fitting Dimensions 1) . EN 2614, Aerospace series Rod assemblies for flight controls in aluminium alloys with double fork fixed end fittings Dimensions 1) . EN 2791, Aerospace series Rod ends, adjustable, single fork and threaded shank with engagement:1,
30、5 thread? Dimensions and loads. EN 2792, Aerospace series Rod ends, adjustable, double fork and threaded shank with engagement:1,5 thread? Dimensions and loads. EN 3042, Aerospace series Quality assurance EN aerospace products Qualification procedure. EN 3228, Aerospace series Nuts, hexagon, plain,
31、reduced height, normal across flats, in steel, cadmium plated Classification:900MPa (at ambient temperature)/235 C 3) . EN 3229, Aerospace series Nuts, hexagon, plain, reduced height, normal across flats, in steel, cadmium plated, left hand thread Classification:900MPa (at ambient temperature)/235 C
32、 3) . 1) In preparation at the date of publication of this standard 2) Published as AECMA Standard at the date of publication of this standard 3) Published as AECMA Prestandard at the date of publication of this standardEN2644:1998 4 BSI 05-1999 EN 3541, Aerospace series Rod ends, adjustable, self-a
33、ligning ball bearing with threaded shank Dimensions, torques, clearances and loads. EN 10204, Metallic products Types of inspection documents. 3 Description A complete rod assembly consists of: a rod body; two end fittings, fixed or adjustable; associated locking and attachment system. The possible
34、assembly combinations of the various components are defined as follows: 3.1 Rod assemblies with one fixed end fitting and one adjustable end fitting SeeFigure 1 andTable 1. Table 1 Figure 1 Combination code Rod assemblies with onefixed end fitting Lock washer Nut Associated adjustable endfittings A
35、1 EN 2327 or EN 2546 or EN 2586 or EN 2596 EN 3228 or EN 3229 EN 2515 or EN 2791 B 1 EN 2291 EN 2587 or EN 2792 C 1 EN 2492 or EN 3541 A 2 EN 2515 or EN 2791 B 2 EN 2594 EN 2587 or EN 2792 C 2 EN 2492 or EN 3541 A 3 EN 2515 or EN 2791 B 3 EN 2595 EN 2587 or EN 2792 C 3 EN 2492 or EN 3541EN2644:1998
36、BSI 05-1999 5 3.2 Rod assemblies with two adjustable end fittings SeeFigure 2 andTable 2. Table 2 Figure 2 Combination code Rod body Lock washer Nut Associated adjustable end fittings A A EN 2290-1 EN 2327 or EN 2546 or EN 2586 or EN 2596 EN 3228 or EN 3229 EN 2515 or EN 2791 A B EN 2515 or EN 2791
37、EN 2587 or EN 2792 B B EN 2587 or EN 2792 B C EN 2587 or EN 2792 EN 2492 or EN 3541 C C EN 2492 or EN 3541 C A EN 2492 or EN 3541 EN 2515 or EN 2791EN2644:1998 6 BSI 05-1999 3.3 Rod assemblies with two fixed end fittings SeeFigure 3 andTable 3. Table 3 Figure 3 Combination code Rod assemblies 1 1 EN
38、 2292 3 3 EN 2610 3 1 EN 2611 2 3 EN 2612 1 2 EN 2613 2 2 EN 2614EN2644:1998 BSI 05-1999 7 4 Required characteristics, inspection and test methods SeeTable 4. Table 4 Sub- clause Characteristics Requirements Inspection and test methods Q a A a 4.1 Constitution In accordance with product standards or
39、 design documentation Visual inspection X X 4.2 Assembly Mounting: no impurity or foreign matter in rod body Visual inspection before and during mounting X X Thread of rod body: protection as specified by the user (purchaser). Visual inspection X X 4.3 Appearance Good general appearance of rod assem
40、bly Visual inspection X X 4.4 Marking For each component, in accordance with its product standard or design documentation Visual inspection X X 4.5 Mounting of an adjustable end fitting Nut assembled asinFigure 4 and Figure 5; not locked. Manual test and visual inspection X X 4.6.1 Mounting of a fix
41、ed end fitting Correct provision of attachment system Manual test and visual inspection X X 4.6.2 Orientation of the end fitting in accordance with the product standard or design documentation. Appropriate measuring procedures and equipment X X 4.6.3 Torsion resistance in conformity with values show
42、n inTable 5. At the end of inspection: no angular displacement of the end fitting Immobilize rod body. Apply torque as inTable 5 to the end fitting. Check using appropriate measuring procedures and instruments. X 4.7 Resistance of the attachment system rod body/fixed end fitting to ultimate static l
43、oad in tension and compression Shall be at least equal to the lower of the following two requirements: performance in tension and compression of the most resistant end fitting (EN2515 or EN2791) using an ultimate compression load equal to the ultimate tensile load; performance of the rod body in ten
44、sion and compression in accordance with the product standard. Perform the tensile and compression tests by the appropriate methods. X 4.8 Theoretical length Two adjustable end fittings or oneadjustable and one fixed end fitting: theoretical length in accordance with that specified on the design docu
45、mentation including the adjustment range ofTable 6; adjustment range between the extreme positions inFigure 5. Position the adjustable end fitting as shown inFigure 4. Appropriate measuring procedures and instruments X X 4.9 Nominal length Two fixed end fittings: in accordance with product standard
46、or design documentation Appropriate measuring procedures and instruments X X a Q = Qualification test A = Acceptance testEN2644:1998 8 BSI 05-1999 Table 5 Torsion resistance end fitting/rod body Table 6 Adjustment range for length L related to theoretical length L End fitting code Minimum torque N.m
47、 06 17 08 27 10 37 Figure 4 Figure 5 Adjustment range Dimensions in millimetres Rods with adjustable end fittings (3.2) Rods with fixed and adjustable end fittings (3.1) Combination code A A A B B B B C A C C C A 1 A 2 A 3 B 1 B 2 B 3 C 1 C 2 C 3 + 3,2 2 + 3,2 2,7 + 3,2 3,4 + 2,1 1,5 + 2,1 2,2 1)Val
48、ues for one end fitting onlyEN2644:1998 BSI 05-1999 9 5 Quality assurance 5.1 Product qualification See EN 3042 andTable 7 andTable 8. The order of the tests and inspections is left to the initiative of the qualification authority. The attachment of the fixed end fittings is left to the initiative o
49、f the manufacturer. Any change to the attachment system fixed end fitting/rod body shall require requalification. 5.1.1 Non-destructive tests Qualification shall be carried out on three rod assemblies of each combination type taken from the first production run prior to delivery. Table 7 Non-destructive tests 5.1.2 Destru
