1、- _ - - - MIL-A-85481 13 m 3739706 0365011 Lf m ,543 7-4 9 4 MI L-A-85481 - - -_ fl OCT. 7 1981 MILITARY SPECIFICATION ARMING WIRE ASSEMBLIES This specification is approved for use by the Naval Air Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of t
2、he Department of Defense. 1. SCOPE 1.1 Scope. This specification covers arming wire assemblies for use as arming elements for aircraft dropped mines. 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The foliowing documents of the issue in effect on date of invitation for bids or request for proposal
3、 form a part of the specification to the extent specified herein. SPECIFICATIONS Federal PPP-B-20 Bag, Cotton, Mailing PPP-B-601 Boxes, Wood, Cleated-Plywood PPP-B-62 1 Boxes, Wood, Nailed and Lock-Corner PPP-B- 6 3 6 Boxes, Fiberboard Military MIL-P- 11 6 Preservation-Packaging, Methods of Berief i
4、cial comments (recommendations , additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: 931, Naval Air Engineering Center, Lakehurst, NJ 08733, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appear
5、ing at the end of this document or by letter. Engineering Specif ications and Standards Department (Code c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STANDARDS Military MIL-STD-105 Sampling Tables and Procedures for Inspection by Attributes MIL-
6、STD-109 MIL-STD-129 Quality Assurance Terms and Definitions Marking for Shipment and Storage MILSTD- 143 Specifications and Standards, Order of Precedence for the Selection of DOD-STD- 2 1 o 1 Classification of Characteristics DRAWINGS (Naval Sea Systems Command) PL 3026313 Arming Wire Mark 4 Mod 2
7、DL 3014527 Shipping Condition, Arming Wire, Mark 4 Type (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publ
8、ications. The following documents form a part of this specification to the extent specified herein. indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASM) Unless otherwise ASTM B117-73 Standard Method of Sal
9、t Spray (Fog) Testing (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) 3. REQUIREMENTS 3.1 Specifications and standards. Specifications and standards for necessary commodities and services not specified herein s
10、hall be selected in accordance with MIL-STD-143. 3.2 First article. When specified (see 6.21, the contractor shall furnish sample unit(s) for first article inspection and approval (see 4.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-A-8548
11、1 13 = 777790b 0365033 8 W MIL-A-85481 (AS) 3.3 Materials. Materials shall be in accordance with the applicable drawings (see 2.1). 3.4 Fabrication. Fach arming wire assembly shall be in accordance with PL 3026313. 3.5 Performance characteristics. 3.5.1 - Pull. When tested as specified in 4.5.3, the
12、 swivel assembly shall be operable after submission to a load of 100 pounds, minimum, for five (5) seconds. 3.5.2 Dynamic load (M101). When tested as specified in 4.5.4, the swivel assembly shall not separate or break when submitted to the dynamic load of a five (5) pound weight dropped twenty (20 i
13、nches). Note: Classification of characteristics. The characteristics verified by the tests and examinations herein are classified as major or minor in accordance with DOD-STD-2101. Tests and examinations that verify major characteristics are identified by the symbol (M). The number following the cla
14、ssification symbol indicates the serial number of the test or examination. Tests and examinations which are not annotated with a classification code are classified minor. 3.5.3 Corrosion. When tested as specified in 4.5.5, the swivel assembly shall be operable after submission to salt spray testing
15、for forty (40)hours, minimum. 3.5.4 Spring force. When tested as specified in 4.5.6, the safety clip shall not release a wire 0.064 inch in diameter when a force of two (2) pounds is applied to the clip in the release direction. 3.5.5 Stripping force. When tested as specified in 4.5.7, the force req
16、uired to strip a safety clip from a wire 0.064 inch in diameter shall be not less than four (4) pounds or more than fifteen (15) pounds. 3.6 Workmanship. All parts and assemblies shall be fabricated and finished in a thorough workmanlike manner. free of dirt, grease, corrosion, and foreign matter an
17、d of damage such as kinks, bends, burrs, or any deformation which would impair its intended use (see 4.5.1 and 6.1). They shall be 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible for the performance of all i
18、nspection requirements as specified herein. specified in the contract, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements Except as otherwise 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH
19、S-,-,-MIL-A-85481 13 7779706 03b50111 T = MIL-A-85481(AS) specified herein, unless disapproved by the Government. reserves the right to perfom any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed
20、requirements. The Government 4.1.1 Quality control system. The contractor shall provide and maintain an effective quality control system acceptable to the Government covering the supplies and services being procured. 4.1.2 Government verification. All quality assurance operations performed by the su
21、pplier will be subject to Government verification at any time. Verification will consist of (a) surveillance of the operations to determine that practices, methods, and procedures of the written system are being properly applied, (b) Government source inspection to measure quality of product to be o
22、ffered for acceptance, and (c) Government inspection of samples for dynamic test to assure compliance with this specification and as specified in the contract or order. 5 4.2 Classification of inspection. Inspections shall be classified as qualification inspections or quality conformance inspections
23、 as defined below: a. First article inspection. (See 4.3) b. Quality conformance inspection. (See 4.4) 4.3 First article inspection. 4.3.1 First article. Unless otherwise specified in the contract (see 6.2), a first article of 20 finished arming wire assemblies and 20 complete sets of parts shall be
24、 manufactured and prepared for delivery using the methods and procedures proposed for the production lot. The first article shall be prepared for delivery in accordance with Section 5 herein and will be tested for approval as specified in Section 4 herein. that prior to starting production the contr
25、actors production methods are capable of producing assemblies that comply with this specification and the design. The requirements for a first article may be waived by the contracting officer if satisfactory production of the assemblies has been recently accomplished by the contractor. The first art
26、icle is for the purpose of determining 4.3.2 First article testing. The first article assemblies and parts shall be subjected to the examinations and tests specified in Table I at any activity designated by the procuring agency. production by the contractor, prior to approval of the first article, s
27、hall be at the contractors risk. Further Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-65461 13 m 9979706 0365015 1 m MIL-A-85481(AS) Examinations and Tests Visual examination *Pull test of swivel assembly *Dynamic load test of swivel assembl
28、y *Corrosion test of swivel assembly *Stripping force of safety clip *Spring force of safety clip Phase I Phase II Paragraph 4.5.1, 4.5.2 4.5.3 4.5.4 4.5.5 4.5.6 4.5.7 *Indicates destructive tests not required to be performed by These tests are to be performed by the designated Government (see 6.2).
29、 - Samples -1 10 10 the contractor. test activity 4.3.3 First article approval. First article approval will be granted when the Government testing activity, through testing and subsequent analysis of the test results, is assured of contractor conformance to the contract technical requirements. when
30、either nonconforming characteristics or unauthorized materials are found. Government based on analysis of detected defects. A first article may be disapproved Conditional acceptance may be granted at the option of the 4.4 Quality conformance inspection. 4.4.1 Production lot sample testing. 4.4.1.1 S
31、ampling plan. Unless otherwise specified, the sampling plans and procedures used in determining the acceptability of products shall be in accordance with MIL-STD-105. for acceptance shall be evaluated for the requirements of Section 3. Each lot submitted 4.4.1.1.1 Classification of defects. Defects
32、shall be classified as specified in Table II. 4.4.1.2 Production lot sample testing. A production lot sample shall be selected randomly by the Cmvernment inspector from each production lot in accordance with MIL-STD-105, Single Sample Normal Inspection, Inspection Level II. Cavernment-designated tes
33、ting activity(ies) specified in the contract (see 6.2). At the option of the Government all or a part of the sample may be subjected to the tests of Table III. The sample shall be forwarded to the Testing shall consist of the examinations and tests of 4.5. 4.4.1.3 Acceptance/Rejection criteria. A lo
34、t will be rejected when the number of defective samples exceeds the maximum Acceptable Quality Level (AQL) allowed in MIL-STD-105 Single Sample Normal Inspection, Inspection Level II, AQL 1.0 for majors and 2.5 for minors. will require screening and repair or replacement of any defective units. The
35、lot 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE II. Classif ication of defects (examination) in accordance with MIL-STD-105. I Defect Materials failing to meet specified requirements. Dimensions not within specified tolerances. Finish fai
36、ling to meet specified requirements. Marking missing, incorrect, insufficient, illegible, or not permanen t. Workmanship not as specified . Packaging failing to meet specified requirements. Major Defects which might impair performance, reliability , maintainability, or safety. TABLE III. Production
37、tests. Examination and Tests Visual examination *Pull test of swivel assembly *Dynamic load test of swivel assembly *Corrosion test of swivel assembly *Spring force of safety clip *Stripping force of safety clip Paragraph 4.5.1, 4.5.2 4.5.3 4.5.4 4.5.5 4.5.6 4.5.7 Minor Defects which would not ma te
38、r ially reduce per- f ormance , reliability, maintainability, or safety. Samples In accordance with 4.4.1.1 and 4.4.1.2 *Indicates destructive tests not required to be performed by the contractor. These tests are to be performed by the designated Government test activity (see 6.2). 6 Provided by IHS
39、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-A-85481 13 W 777770b 03b5017 5 MIL-A-85481(AS) 4.5 Examinations and tests. 4.5.1 Visual examination. Each arming wire assembly and part shall be examined for conformance with PL 3026313 and this specification and
40、 to verify that there are no burrs, sharp edges, kinks, bends, deformations or contaminants (see 3.4.2 and 3.6). z 4.5.2 Examination of preservation-packaging. The preservation- packaging shall be examined for conformance with Section 5 and the contract (see 6.2). 4.5.3 Pull test of swivel assembly.
41、 The fixture of this test shall have a nineteen thirty-seconds (19/32) inch diameter hardened steel pin for support of the assembly through the large loop. A hook or pin shall be inserted in the small loop and, using the hook or pin, the required load shall be applied and held for the specified peri
42、od of time. After test, the small loop shall be held in one hand and the large loop shall be struck sharply with a finger of the other hand. Failure of the large loop to spin one half (1/2) turn or more shall class that unit defective (see 3.5.1). 4.5.4 Dynamic load test ofswivel assembly. The fixtu
43、re for this test shall have a pin for support of the large loop of the same configuration as the pin of 4.5.3. consist of a bar approximately thirty (30) inches long which is slotted at one end to accept the small loop of the swivel. The slotted end shall be drilled through to accept a pin which wil
44、l attach the swivel to the bar. The other end of the bar shall have a steel disc attached firmly thereto. bar shall supply the specified load. For testing, the large loop shall be assembled to the firmly supported pin, shall be assembled to the small loop. The weight shall be raised until its bottom
45、 surface is twenty (20) inches from the top of the disc. The weight shall then be released to drop freely. Any unit which separates or breaks during test shall be classed defective (see 3.5.2). The balance of the fixture shall A five (5) pound weight, bored to slide freely on the The slotted end of
46、the bar 4.5.5 Corrosion test of swivel assembly. The loop and swivel assembly shall be tested in accordance with ASTM B117-73. Any assembly failing the spin requirement of 4.5.3, after test, shall be classed defective (see 3.5.3). 4.5.6 Spring force of safety clip. A new .O64 inch diameter arming wi
47、re conforming with this specification, shall be inserted into, and be held by, the clip. force shall be applied to the clip in the releasing direction with an appropriate spring scale. of that force shall be classed defective (see 3.6.1). While holding the clip fixed, the specified Any clip releasin
48、g the wire upon application 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.5.7 Stripping force of safety clip. The fixture for this test shall consist of a horizontal support with vertical holes or a slot capable of holding the desired number of
49、 test samples. shall be applied with an accurate spring scale. conducted in two (2) phases. after assembly of the clips to the wires. tested at least forty-eight (48) but not more than sixty-four (64) hours after assembly. shall be held in the support and the clip assembled three (3) inches, minimum, from the end. in the end of the wire. of four (4) pounds or less shall be classed defective. If stripping does not occur the load
