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1、BRITISH STANDARD AEROSPACE SERIES BS 2C 8:1988 ISO 7166:1985 (Superseding British Standard C 8) Specification for Rail and stud configuration for aircraft passenger equipment and cargo restraint ISO title: Aircraft Rail and stud configuration for passenger equipment and cargo restraint UDC 629.7.046
2、 219:684.434.7 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:15:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2C 8:1988 This British Standard, having been prepared under the direction of the Aerospace Standards Committee, was published under the authority of the Board of BSI and comes
3、 into effect on 29 February 1988 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference ACE/57 Draft for comment 84/72725 DC ISBN 0 580 16518 3 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Ae
4、rospace Standards Committee (ACE/-) to Technical Committee ACE/57, upon which the following bodies were represented: Association of Webbing Load Restraint Equipment Manufacturers British Airways British Caledonian Airways British Narrow Fabrics Association Civil Aviation Authority (Airworthiness Div
5、ision) Ministry of Defence Society of British Aerospace Companies Limited Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:15:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2C 8:1988 BSI 11-1999i Contents Page Committees re
6、sponsibleInside front cover National forewordii 0Introduction1 1Scope and field of application1 2References1 3Dimensional requirements1 4Strength requirements1 Figure 1 Rail2 Figure 2 Stud fitting3 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:15
7、:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2C 8:1988 ii BSI 11-1999 National foreword This British Standard, published under the direction of the Aerospace Standards Committee, is a revision of British Standard C 8:1969, which is withdrawn. It is identical with ISO 7166:1985 “Aircraft Rail an
8、d stud configuration for passenger equipment and cargo restraint”, published by the International Organization for Standardization (ISO). ISO 7166 was produced as a result of international discussion in which the UK took an active part. Terminology and conventions. The text of the International Stan
9、dard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used as a decimal marker. In British Standar
10、ds it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard”. Cross-references. The Technical Committee has reviewed the provisions of ISO 4170 and ISO 41
11、71, to which reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. There are no corresponding British Standards to ISO 4170 and ISO 4171. NOTEThe latest revision of an Aerospace Series standard is indicated by a prefix number. A British St
12、andard does not purport to include all the necessary provisions 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. Summary of pages This document comprises a front cove
13、r, an inside front cover, pages i and ii, pages 1 to 4, 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 the inside front cover. Licensed Copy: sheffieldun sheffieldun
14、, na, Tue Nov 28 14:15:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2C 8:1988 BSI 11-19991 0 Introduction This International Standard specifies the geometry of aircraft floor rails which are normally set longitudinally into an aircraft floor structure. Seats, galleys, bulkheads and other removab
15、le or adjustable equipment are normally secured into the seat rails by means of studs. This concept is also widely used in the air cargo field for the restraint of cargo: the most frequent application being in the attachment of cargo nets to pallets (see ISO 4170 and ISO 4171). 1 Scope and field of
16、application 1.1 This International Standard specifies the geometry and the partial dimensions of rails and studs used for securing passenger equipment and for cargo restraint, necessary to ensure interchangeability of these items. 1.2 Individual strength requirements will determine the complete rail
17、 shape, such as incorporating the standard section integrally into an I-beam extrusion. 1.3 The overall shape of the studs above the top of the rail will depend upon the application. The upper portion may be cylindrical to fit into the tubular structure of a seat or galley unit. Alternatively, it ma
18、y have a ring attached to serve as a tiedown point for a rope or strap. 1.4 The rail imparts loads in the upward, downward, sideward, forward and aft directions. Forward and aft loads are applied to the track by means of a “shear plug”, a part of the pin assembly (or structure to which the stud is j
19、oined) which engages in the rail notches 20,8 mm (0.800 in) in diameter, but this is not included in this International Standard. In the case of seat attachment or similar application, the downward load is applied to the upper face of the rail by a fitting which is also part of the seat, but this is
20、 not included in this International Standard. 2 References ISO 4170, Interline air cargo pallet nets. ISO 4171, Interline air cargo pallets. NOTEISO Recommendation R 837, Aircraft seat rails and pins, provided only for single stud fittings. Furthermore, most of the worlds passenger aircraft, and vir
21、tually all cargo equipment, used rail and stud configurations based on the USA military specification MS.33601A. 3 Dimensional requirements 3.1 The dimensions and tolerances of the rail and studs shall conform to Figure 1 and Figure 2. 3.2 Sharp edges and corners shall be removed. 3.3 The stud fitti
22、ng may have one pair of lips, formed by the diameter B, and, in this case, it is known as a single stud fitting. 3.4 Figure 2 shows a double stud fitting. Multiple stud fittings may have up to 5 pairs of lips (or 5 studs). 4 Strength requirements This International Standard is concerned only with th
23、e configuration of rails and studs. The load carrying capacity will be determined by the strength of the materials from which the items are manufactured and by the strength of the structure to which they are attached. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:15:34 GMT+00:00 2006, Un
24、controlled Copy, (c) BSI BS 2C 8:1988 2 BSI 11-1999 Dimensionmmin A*25,41.00 B 19,7 20,0 0.776 0.787 C 10,7 11,4 0.421 0.449 D 20,3 20,8 0.799 0.819 E 7,6 8,0 0.299 0.310 F 3,9 3,5 0.154 0.133 * Tolerance of 0,1 mm (0.004 in) on 1 pitch. G ref. 1,3 1,0 0.051 0.039 Tolerance of 0,5 mm (0.020 in) on 1
25、00 pitches.10,5 to 15,5 R1 0,3 0,8 0.012 0.031 R2 1,3 1,8 0.051 0.071 R3FullFull NOTE 1Diameter B and slot centreline D shall be coincident with slot centreline C to within 0,13 mm (0.005 in). NOTE 2All faces shall be within 0,5 of the specified position relative to the upper surface of the rail. NO
26、TE 3For low-weight or low-load applications dimensions E and F may be reduced by 0,76 to 1,02 mm (0.03 to 0.04 in) and the rail shall be specified accordingly as a “lightweight rail”. Figure 1 Rail Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:15:34 GMT+00:00 2006, Uncontrolled Copy, (c)
27、 BSI BS 2C 8:1988 BSI 11-19993 Dimensionmmin Aa 9,8 9,7 0.386 0.382 Ba 18,8 18,3 0.740 0.721 C 3,3 3,2 0.130 0.126 Db 25,5 25,3 1.004 0.996 c8,5 to 10,5 R1 1,8 1,5 0.071 0.059 R2 1,5 1,2 0.059 0.047 R3 0,8 0,5 0.031 0.020 a Diameters A and B shall be concentric to within 0,13 mm (0.005 in). b The to
28、lerance on successive D dimensions shall not be cumulative for multiple stud fittings. All studs shall be within 0,1 mm (0.004 in) of the specified position relative to the datum stud. c The angular variation for those surfaces defined by angle E shall be within 0,5 of the specified plane relative t
29、o the lower surface of the stud. Figure 2 Stud fitting Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:15:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:15:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2C 8:1988 BSI 11-199
30、9 Publications referred to See national foreword. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:15:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 2C 8:1988 ISO 7166:1985 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body resp
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39、 are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 28 14:15:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI