1、BRITISH STANDARD AEROSPACE SERIES BS 2C 19:1994 ISO 9939:1994 (superseding BSC19:1986) Specification for Pressure re-oiling connection (new type)BS2C 19:1994 This British Standard, having been prepared under the directionof the Aerospace Standards Policy Committee, waspublished under the authorityof
2、 the Standards Boardand comes into effect on 15September 1994 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference ACE/14 Draft for comment 90/70673 DC ISBN 0 580 23212 3 Committees responsible for this British Standard The preparation of this British Sta
3、ndard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/14, upon which the following bodies were represented: Civil Aviation Authority (Airworthiness Division) Institute of Petroleum Ministry of Defence Society of British Aerospace Companies Limited Amendme
4、nts issued since publication Amd. No. Date CommentsBS2C19:1994 BSI 08-1999 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2 Requirements 1 Annex A (informative) Bibliography 3 Figure 1 2 Table 1 1BS2C 19:1994 ii BSI 08-1999 National foreword This British Sta
5、ndard has been prepared under the direction of the Aerospace Standards Policy Committee. It is identical with ISO 9939:1994, Aerospace Pressure re-oiling connection (new type), published by the International Organization for Standardization (ISO). This standard is a new edition ofBS C 19:1986, which
6、 is withdrawn, and it has been published to adoptISO9939 which itself is the international adoption of BSC 19:1986. There is, therefore, no technical difference between BS C 19 and BS 2C 19. The standard provides requirements for new designs of equipment. Previous designs still in service are covere
7、d by BS C3:1964 (obsolescent) and ISO451:1976. 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 legal obligat
8、ions. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to3 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.BS2C19
9、:1994 BSI 08-1999 1 1 Scope This International Standard specifies the basic dimensions of a pressure re-oiling connection for use with all oils for aircraft engines, and the clearance envelope to be provided. 2 Requirements 2.1 Connection The connection shall conform to the minimum requirements and
10、basic dimensions given in Figure 1 and Table 1. 2.2 Access clearance The minimum dimensions of the access clearance envelope to be provided around the connection shall be as given in Figure 1 and Table 1. Table 1 Dimension Millimetres Inches min. max. min. max. A B C D E F G H J K L M P r 1 r 2 r 3
11、14,73 25,35 30,66 17,4 2,54 5,56 127 76,2 4,62 2,92 31,75 0,13 2,92 0,51 14,78 25,40 30,96 17,5 2,59 6,35 44,45 4,88 3,43 0,025 0,25 3,43 0,76 0,580 0,998 1,207 0,685 0,100 0,219 5 3 0,182 0,115 1,25 0,005 0,115 0,02 0,582 1,000 1,219 0,689 0,102 0,250 1,75 0,192 0,135 0,001 0,010 0,135 0,03BS2C 19:
12、1994 2 BSI 08-1999 NOTE 1Remove all burrs and break sharp edges 0,4 mm (0,016 in) max. radius. NOTE 2The method of indicating geometric tolerances complies with ISO 1101. NOTE 3The method of indicating surface texture complies with ISO 1302. Figure 1 BS2C19:1994 BSI 08-1999 3 Annex A (informative) B
13、ibliography 1 ISO 1101:1983, Technical drawings Geometrical tolerancing Tolerances of form, orientation, location and run-out Generalities, definitions, symbols, indications on drawings. 2 ISO 1302:1992, Technical drawings Method of indicating surface texture.BS 2C 19:1994 ISO 9939:1994 BSI 389 Chis
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