1、SAE-AS6136ADOPTION NOTICESAE-AS6136, “CONDUIT, ELECTRICAL, FLEXIBLE, SHIELDED, ALUMINUMALLOY FOR AIRCRAFT INSTALLATIONS“, was adopted on 25-AUG-98 foruse by the Department of Defense (DoD). Proposed changes byDoD activities must be submitted to the DoD Adopting Activity:Commander, Naval Air Warfare
2、Center, Aircraft Division, Code414100B120-3, Highway 547, Lakehurst, NJ 08733-5100. Copies ofthis document may be purchased from the Society of AutomotiveEngineers 400 Commonwealth Drive Warrendale, Pennsylvania, UnitedStates, 15096-0001. http:/www.sae.org/_Custodians: Adopting Activity:Navy - ASArm
3、y - CRNavy - ASAir Force - 11FSC 5975DISTRIBUTION STATEMENT A: Approved for public release; distributionis unlimited.SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and enginee ring sciences. The use of this report is entirelyvolun
4、tary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invit es your wr
5、itten comments and suggestions.Copyright 1998 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.QUESTIONS REGARDING THIS DOCUMENT: (724) 772-8510 FAX: (724) 776-0243TO PLACE A DOCUMENT ORDER: (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS: http:/www.sae.org400 Commonwealt
6、h Drive, Warrendale, PA 15096-0001AEROS PACE STANDARDSubmitted for recognition as an American National StandardAS6136Issued 1998-08C ondui t , E lectrical , F lexible , S hielded ,A luminum A lloy for A ircra ft I nstallationsFSC 5975NOTICEThis document has been taken directly from U.S. Military Spe
7、cification MIL-C-6136A, Amendment 2, Notice 1 and contains only minor editorial and format changes required to bring it into conformance with the publishing requirements of SAE technical standards. The initial release of this document is intended to replace MIL-C-6136A, Amendment 2, Notice 1. Any pa
8、rt numbers established by the original specification remain unchanged.The original Military Specification was adopted as an SAE standard under the provisions of the SAE Technical Standards Board (TSB) Rules and Regulations (TSB 001) pertaining to accelerated adoption of government specifications and
9、 standards. TSB rules provide for (a) the publication of portions of unrevised government specifications and standards without consensus voting at the SAE Committee level, and (b) the use of the existing government specification or standard format.Under Department of Defense policies and procedures,
10、 any qualification requirements and associated qualified products lists are mandatory for DOD contracts. Any requirement relating to qualified products lists (QPLs) has not been adopted by SAE and is not part of this technical report.SAE AS6136- 2 -1. SCOPE:1.1 Scope:This specification covers the re
11、quirements for shielded electrical conduit for aircraft installations.1.2 Classification:Flexible shielded conduit shall be furnished in two types, as specified (see 6.2):Type I - Without outer synthetic compounded coveringType II - With outer synthetic compounded covering2. APPLICABLE DOCUMENTS:2.1
12、 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein:SPECIFICATIONSFederalQQ-A-225/2 Aluminum Alloy Bar, Rod, and Wire; Rolled, Drawn, or Cold Finished, 3003QQ-A-250/2 Aluminum Alloy
13、3003, Plate and SheetQQ-A-430 Aluminum Alloy Rod and Wire; for Rivets and Cold HeadingMilitaryMIL-P-116 Preservation, Methods ofMIL-S-6855 Synthetic Rubber Sheets, Strips, Molded or Extruded ShapesMIL-STD-105 Sampling Procedures and Tables for Inspection by AttributesMIL-STD-129 Marking of Shipments
14、(Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.)SAE AS6136- 3 -2.2 Other publications:The following documents form a part
15、 of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply.American Society for Testing and MaterialsASTM D 149-64 Dielectric Breakdown Voltage and Dielectric Strength of Electrical Insulat
16、ing Materials at Commercial Power FrequenciesASTM D 412-68 Tension Testing of Vulcanized RubberASTM D 568-61 Flammability of Plastics 0.127 CM (0.050 inch) and Under in ThicknessASTM D 570-63 Water Absorption of PlasticsASTM D 624(c)-54 Test for Tear Resistance of Vulcanized RubberASTM D 746-64T Tes
17、t for Brittleness Temperature of Plastics and Elastomers by ImpactASTM D 792-66 Test for Specific Gravity and Density of Plastics by DisplacementASTM D 2240-64T Test for Indentation Hardness of Rubber and Plastics by means of a Durometer(Copies of ASTM publications may be obtained from the American
18、Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103.)3. REQUIREMENTS:3.1 Materials:Materials shall conform to applicable specifications and be as specified herein and on applicable drawings. Materials which are not covered by specifications or which are not specific
19、ally described herein shall be of the best quality, of the lightest practicable weight, and suitable for the purpose intended.3.1.1 Tubing material: The tubing shall be formed from aluminum alloy sheet conforming toQQ-A-250/2 or from flattened wire conforming to QQ-A-225/2.3.1.2 Packing material: Th
20、e packing material used shall be such as not to cause corrosion when the tubing is exposed to salt atmosphere. If cotton packing is used it shall be impregnated with bituminous paint or other acceptable compound.3.1.3 Braid material: The wire from which the braid is made shall be aluminum alloy conf
21、orming toQQ-A-430, temper O.3.1.4 Outer covering material (Type II): The outer cover of Type II conduit shall be either synthetic rubber or nitrile rubber plasticized polyvinyl chloride or nitrile rubber plasticized polyvinyl chloride - acetate.SAE AS6136- 4 -3.1.4.1 Synthetic rubber: The synthetic
22、rubber shall conform to Class 2 of MIL-S-6855 and shall be of uniform thickness and free from pits and pinholes.3.1.4.2 Nitrile rubber plasticized polyvinyl chloride or nitrile rubber plasticized polyvinyl chloride - acetate: The nitrile rubber plasticized polyvinyl chloride or nitrile rubber plasti
23、cized polyvinyl chloride-acetate shall be of uniform thickness and free from pitting and shall conform to Table I.TABLE I3.2 Design and construction:3.2.1 Complete conduit: Type I complete conduit shall consist of flexible aluminum alloy tubing covered with a woven aluminum alloy wire braid (see fig
24、ure 1). Type II complete conduit shall be identical to type I, except that it shall be provided with an outer protective synthetic rubber covering.SAE AS6136- 5 -FIGURE 1. Shielded conduit type I and type II(before outer covering is applied)3.2.1.1 Sizes and dimensions: The nominal sizes and inside
25、and outside diameters of the complete conduit shall be as specified in Table II.3.2.1.2 Bending radius: All conduit (minus the outer synthetic rubber covering of type II) shall withstand bending in a loop, with the inside radius as specified in Table II, without damage.3.2.2 Tubing: The tubing shall
26、 be of a rugged, full four-wall inter locking type, suitably packed to provide the specified watertightness (see 3.2.2.3). The tubing shall be made by helically coiling a formed aluminum alloy strip in such manner that it will not unravel or show loose ends when cut. The width of the strip and pitch
27、 of the helix shall be designed to provide for the required bending radius (see 3.2.1.2).3.2.2.1 Tubing dimensions: The dimensions of the tubing and the thickness of the strip used in its forming shall be as specified in Table II.3.2.2.2 Tubing yield load: The yield load of the tubing (conduit with
28、outer covering and braid removed) shall be as specified in Table II.SAE AS6136- 6 -TABLE II. Sizes and dimensionsSAE AS6136- 7 -3.2.2.3 Water tightness: Class I tubing from which the shielding braid has been removed, or class II tubing from which the outer covering and the shielding braid have been
29、removed and which has been flexed to the bending radius specified in Table II, shall not leak more than one-third of its interior volume per hour when tested as specified in 4.5.2.3.2.3 Braid: The braid shall be applied in such manner that the finished conduit may be bent to the specified radius wit
30、hout damage (see 3.2.1.2). The braid shall fit the tubing closely enough to prevent appreciable bunching or undue slipping.3.2.3.1 Braid design: The weave of the braid shall be either of the basket types, over two and under two, or over one and under one. The diameter of the wire used for the braid
31、and the number of wires per pick shall be as specified in Table II. Each pick shall contain the same number of wires.3.2.3.2 Braid coverage: The total number of wires in the complete braid and the number of parallel wires per inch length of conduit shall be such as to provide the percentage of cover
32、age specified in Table II, when calculated by the method specified in 4.5.4.3.2.4 Physical properties of outer cover: The physical properties of the outer synthetic rubber covering, both before and after testing, shall conform to class 2 of MIL-S-6855.3.3 Marking:Types I and II conduit shall be mark
33、ed by either of the following methods:(a) Continuous or intermittent lengths of waterproof tape marked with the manufacturers name or trademark at intervals of not more than 1 foot shall be incorporated between the metal tubing and the braid.(b) Manufacturers identification shall be placed at not mo
34、re than 3-inch intervals on the inner side of the spiral convolutions of the conduit.3.4 Length of cut:The maximum permissible length of a single piece within any quantity ordered is limited only by manufacturing and handling facilities. Not less than 85 percent of the total quantity of each size on
35、 order shall be furnished in lengths equal to or greater than the nominal lengths specified in Table III. Pieces shorter than the minimum acceptable lengths specified in Table III will not be accepted. All lengths shall be continuous, unspliced, and shall be measured when the conduit is fully extend
36、ed under a tension of approximately 10 percent of the yield load specified in Table II.SAE AS6136- 8 -TABLE III. Piece lengths3.4.1 End protection: Each end of each length of type I conduit shall be provided with a removable ferrule or with suitable seizing or tape, which will prevent unraveling of
37、the braid and cover the ends of the braided wires.3.5 Workmanship:All details of manufacture shall be in accordance with the best practice for aircraft flexible conduit. The conduit shall be free from all defects which would adversely affect its serviceability.3.5.1 Interior: The interior surface of
38、 the conduit shall be free from burrs or sharp edges which might cause abrasion of cable insulation, and shall be free from obstructions.3.5.2 Splices: Splices in braids shall be neatly made, and shall cause no sharp or rought projections on the conduit. There shall be not more than one spliced pick
39、 in any 2-foot length of conduit. All loose ends shall be trimmed closely.3.5.3 Ends: The ends of each length of conduit shall be cut square, and shall be free from burrs or sharp edges which would interfere with the assembly of the conduit with parts with which it is intended to be used.4. QUALITY
40、ASSURANCE PROVISIONS:4.1 Responsibility for inspection:Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any c
41、ommercial laboratory acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements.SAE AS6136- 9 -4.2 Sampling:Unless othe
42、rwise specified, sampling for examinations and tests shall be in accordance withMIL-STD-105.4.3 Inspection lot:Conduit of one type and size presented at one time shall be considered a lot. The inspection lot size shall be determined by the number of coils or reels presented. The sample unit for exam
43、ination shall consist of 4 consecutive feet of conduit.4.3.1 Visual examination: The conduit shall be examined for defects in material, design, construction, marking, and workmanship. Any area of nonconformance with specified requirements shall be classified a defect. The inspection level shall be L
44、evel II with an AQL of 4.0 defects per 100 units.4.3.2 Dimensional examination: An examination shall be made to determine compliance with dimensional requirements. Any dimension that is not within the specified tolerances shall be classified a defect. The inspection level shall be S-3 with an AQL of
45、 6.5 defects per 100 units.4.3.3 Testing of the end item: Testing shall be performed on each sample unit in accordance with 4.5.1, 4.5.2, 4.5.3, and 4.5.4. The inspection level shall be S-2 and any failure to meet the specified requirements shall be cause for rejection of the lot.4.4 Test reports:Wh
46、en required by the contract or order (see 6.2), test reports shall be furnished in duplicate showing quantitative results for all tests and analyses required by this specification.4.5 Inspection methods:4.5.1 Bending radius: The specimens for the bending test shall be of a length approximately four
47、times the required bending radius. One end of the specimen shall be fastened tangentially to the surface of a cylindrical form so as to hang vertically, in a plane normal to the axis of the form, and the weight specified in Table II shall be attached to the lower end. The radius of the form shall be
48、 as specified in Table II. The form shall be slowly rotated 225 degrees to the position shown on figure2. Failure of the conduit to come within 1/8 inch of the form, at any point along its curvature between the point of attachment and a point diametrically opposite shall constitute cause for rejecti
49、on.4.5.2 Watertightness: Specimens for this test shall be taken from the flexed portion of specimens previously subjected to the bending radius test and shall be of a length approximately 15 times the nominal inside diameter. After removing the shielding braid, both ends shall be taped with friction or masking tape over a distance equal to the nominal inside diameter. Corks shall be fitted snugly in each end and the ends shall then be dipped in molten paraffin or wax as ar back as the inner edge of the tape to insure watertightness.SAE AS6136- 10 -FIGURE 2. Bend
