1、BRITISH STANDARD BSG175:1959 Incorporating Amendment No. 1 Aircraft fuel nozzle grounding plugs and sockets UDC 621.316.541:629.139.5BSG175:1959 This BritishStandard, having been approved by the Aircraft Industry Standards Committee and endorsed by the Chairman ofthe Engineering Divisional Council,
2、was published under theauthority of the General Council of the Institution on 31March1959 BSI 02-2000 The following BSI references relate to the work on this standard: Committee reference ACE/5 Draft for comment CY(ACE)4750 ISBN 0 580 34531 9 Amendments issued since publication Amd. No. Date Comment
3、s 6117 March 1967 Indicated by a sideline in the marginBSG175:1959 BSI 02-2000 i Contents Page Foreword ii 1 Scope 1 2 Dimensions 1 3 Connections 1 Appendix Approximate metric equivalents of British units 2 Figure 1 Aircraft fuel nozzle grounding plug 1BSG175:1959 ii BSI 02-2000 Foreword The plugs a
4、nd sockets dealt with in this BritishStandard conform to the requirements of Recommendation R.46 1)of the International Organization for Standardization, prepared at the request of the International Air Transport Association as one of a series of recommendations for aircraft ground servicing connect
5、ions to facilitate the international servicing of aircraft. 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. Compliance with a British Standard does not of itself confer immunity from
6、legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 and 2 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 fro
7、nt cover. 1) ISO Recommendation R.46, “Aircraft fuel nozzle grounding plug and socket”.BSG175:1959 BSI 02-2000 1 1 Scope This BritishStandard specifies requirements for plugs and sockets to provide an earth connection for aircraft refuelling couplings. NOTEWhere metric equivalents have been given, t
8、he figures in British units are to be regarded as the standard. The metric conversions are approximate. More accurate conversions should be based on the tables in BS350, “Conversion factors and tables.” 2 Dimensions a) Plugs. Aircraft fuel nozzle grounding plugs shall conform to the dimensions shown
9、 in Figure 1. b) Sockets. Grounding sockets provided on aircraft shall be suitable to accommodate plugs of the dimensions shown in Figure 1. The diameter of the bore of the socket shall be0.251+0.002in. 3 Connections a) The plugs shall be attached by zinc or tin-coated steel cable to the nozzles of
10、refuelling tankers. The cable shall be not less than4ft.6in.(1.4metres) in length, and not less than0.062in(1.6mm) in diameter. b) The bore of the sockets shall incorporate a device to ensure a good electrical contact when the plug is fully engaged in the socket, such that the overall resistance of
11、the grounding plug/aircraft grounding socket/cable assembly does not exceed0.005ohms when tested between the aircraft structure adjacent to the grounding socket and the refuelling nozzle. Dimensions are in inches Figure 1 Aircraft fuel nozzle grounding plugBSG175:1959 2 BSI 02-2000 Appendix Approxim
12、ate metric equivalents of British units in. mm in. mm 0.002 0.05 0.242 6.1 0.003 0.08 0.248 6.3 0.005 0.13 0.25( 1 / 4 ) 6.4 1 / 16 1.6 1 3 / 16 30.2 0.187 4.8blankBSG 175:1959 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible fo
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