1、MIL-C-14242B 13 797770b 0276071 5 3 y/ y!?,. 20 April 1967- S up ers e ding See Section 6 _I_c_c - -_ - - MIL-C-14242B (MU) MILITARY- SPECIFICATION FOR CABLE ASSEMBLIES, FUZE CONTROL 1. SCOPE 1.1 This specification covers the following electrical cable assemblies for bomb fuze control: M4 8 (T8) M4
2、9 (T15) Paper, Gummed (Sealing and Securing) Military MIL-B-117 - Bags and Sleeves, Interior Packaging MIL-A-2550 MIL-TA5422 MIL-1-45208 - Inspection System Requirements and Appendix A to - Ammunition and Special Weapons : General Specification for - Testing, Environmental, Aircraft Electronic Equip
3、ment MIL-1-45208 Quality Assurance System (see 6.4) STANDARDS MIL-STD-129 MIL-STD-202 MIL-STD-331 - Fuze and Fuze Components, Environmental and Performance MIL-STD-1167 - Ammunition Data Card MIL-STD-1169 MIL-STD-1235 - Marking for Shipment and Storage - Test Methods for Electronic and Electrical Co
4、mponent Parts Tests for (Test 106 and Test 119) - Packaging, Packing and Marking for Shipment of Inert Ammunition Components - Single and Multilevel Continuous Sampling Procedures and Tables for Inspection by Attributes THIS DOCUMENT CONTAINS /y PAGES. c . -. - / - -1 - _=_i _L_ - =L r i t - .- - -
5、-1- R -i-=- - _ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_I_.-.- ILs_ - flIL-C-Lq242B 13 = 79777Ob 0276072 7 MIL- C- 142 42B (MU) r DRAWINGS Army Materiel Command EPL-10965760 - Engineering Parts List - Cont Fuze Control M73C t - Cab1 embly -
6、EPL-7542941 EPL- 75 42 96 4 EPL-7542942 EPL-7542965 EPL- 75 42 96 6 EPL- 7 5 4 29 6 7 EFL-754 2 96 8 IEL-7542941 - Engineering Parts List - Contents - Cable Assembly - Fuze Control M48(T8) .- Engineering Parts List - Contents - Cable Assembly - Fuze Control M49(T15) - Engineering Parts List - Conten
7、ts - Cable Assembly - Fuze Control M50(T16) - Engineering Parts List - Contents - Cable Assembly - Fuze Control M71 (T26) - Engineering Parts List - Contents - Cable Assembly - Fuze Control M72 (T32) - Engineering Parts List - Contents - Cable Assembly - Fuze Control M73(T27) - Engineering Parts Lis
8、t - Contents - Cable Assembly - Fuze Control M7-4 (T28) - Index to List of Inspection Equipment for Cable Assembly M48(T8), M49(T15) , M71(T26) , M73(T27) , M74(T28, M72(T32) , M50(T16) ,M73C, (Copies of specifications, standards, drawings, and publications required by suppliers in connection with s
9、pecific procurement functions should be obtained from the procuring activity or as directed by the contracting officer. ) 3. REQUIREMENTS 3.1 Samples. 3.1.1 First article approval sample. Prior to the start of regular produc- tion except where a new contract follows within 90 days production of acce
10、p- table material of identical design, the contractor shall manufacture and submit a sample of 300 cable assemblies and parts as shown in figure 1, using as far as possible the methods and processes proposed for quantity production. However, any deviation from these methods and processes shall be do
11、cumented and submitted with the first article approval sample. The sample shall conform to the require- ments of this specification. Additional samples that may be required because of failure of .the sample to meet the requirements of this specification shall be supplied by the contractor at his exp
12、ense. Until the first article approval sample is approved, further production will be at the risk of the contractor and the Government will not proceed with inspection for acceptance of the pro- duction lots until this approval has been obtained. 3.1.2 Supplemental samples. Prior approval of the pro
13、curing activity shall be required whenever there is a change in design, material, or process which affects safety, operability, or interchangeability as defined by the Classifi- cation of Defects. rest with the Government. The decision for requesting a supplemental sample shall 2 Provided by IHSNot
14、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-14242B (MU) 3.1.3 Engineering control sample. Ten cable assemblies selected at random from each accepted lot or selected as specified by the Technical Agency shall be shipped within two working days to the Technical
15、 Agency designated by the procuring activity. 3.2 Materials, design and construction. The device shall be in accordance with this specification and the documents referenced in section 2. 3.3 Performance requirements. 3.3.1 Insulation resistance. The insulation resistance for any one con- ductor of t
16、he cable assembly shall be not less than 200 megohms when 500 volts direct current (dc) is applied between any conductor and all other conductors shorted together. 3.3.2 Continuity. The resistance of any one conductor of the cable assembly shall be not more than one ohm. 3.3.3 Pull. There shall be n
17、o mechanical or electrical failure of the cable assembly when a force of 30 pounds is applied to the plug tip while the plug is held by the ground contact. 3.3.4 Extreme temperature. The cable assembly when subjected to each of the extreme temperatures of -65OF(-54OC) and 16OoF(7l0C) for not less th
18、an four hours shall meet the-requiremenk of 3.3.2. and the insulation resistance shall be not less than 20 megohms. 3.3.5 Temperature cycling. The cable assembly after exposure to five temperature cycles between the limits of 16O0F(7I0C) and -65OF(-54OC) shall meet the requirements of 3.3.2 and the
19、insulaton resistance shall be not less than 20 megohms. 3.3.6 Salt spray. The cable assembly after exposure to salt spray for 50 hours shall meet the requirement of 3.3.2 and the insulation resistance -shall be not ,less than 20 megohms. 3.3.7 Humidity. The cable assembly after exposure to ten humid
20、ity cycles between the limits of 100F(380C) and 160F(710C) at a relative humidity greater than 95 percent shall meet the requirement of 3.3.2 and the insulation resistance shall be not less than 20 megohms. 3.3.8 Salt immersion. The cable assembly after the receptacle has been immersed in a salt sol
21、ution for a period of 24 hours shall meet the require- ment of 3.3.2 and the insulation resistance shall be not less than 20 megohms. 3.3.9 Accelerated aging. The cable assembly after exposure to 1,000 fifteen-minute cycles in a vacuum-steam-pressure chamber which simulates tropical conditions shall
22、 meet the requirement of 3.3.2 and the insulation resistance shall be not less than 20 megohms. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-c-
23、LWZB 13 939990b 0296075 2 m MIL- C- 142 42B (MU) a. Accepted, provided recommended changes are made by the contractor prior to the start of regular production. b, Rejected, and new samples for approval required for the tests failed. c. Rejected, and a complete new first article approval sample requi
24、red for approval. In all cases, the contractor shall comply with any required changes to the satisfaction of the Government in future production. I 4.3.1.1 Reinstitution of tests. Acceptance of the first article approval sample does not relieve the contractor from meeting all requirements of this sp
25、ecification throughout the life of the contract. failure tio continue to meet first article approval test requirements, the Government reserves the right to require tightened inspection on a lot basis, consisting of the reinstitution of such portions of the first article approval tests needed to ver
26、ify the effectiveness of the corrective action. When evidence shows I 4.4 Acceptance inspection. Inspection shall be as specified in MIL-A-2550 The inspection called for in Classification of Defects and in this document. (4.4.5) and Acceptance Tests (4.4.6) shall be conducted by the contractor under
27、 the observation of the Government inspector unless otherwise directed by the procuring activity. 4.4.1 Lot formation. A lot shall consist of devices produced by one manu- facturer in accordance with stabilized methods and techniques , the same drawing and drawing revision, the same specification an
28、d specification revi- sion (except for those introduced on a without obsolescence basis) under conditions of continuous production free from interruptions other than those due to the end of a shift or day. 4.4.2 Sampling. Sampling shall be in accordance with MIL-STD-1235, Plan CSP-A, and this docume
29、nt. 4.4.3 Lot acceptance. Lots shall be accepted on the basis of MIL-STD-1235, Plan CSP-A, this document and more specifically, the Classification of Defects (4.4.5), Acceptance Tests (4.4.6) , and Material and Component Certification (4.4.7). i 4.4.4 Data recording. A written record shall be made o
30、f all inspections and tests specified in section 4. approved by the Government Agency. forwarded to the designated Government Agency within two days after the Government acceptance of the item or lot. The data shall be recorded on forms The forms properly filled out shall be using the Classification
31、 of Defects and applicable drawings. Any of the defect characteristics may be checked on a higher assembly than is indi- cated inthe classification, if desired by the contractor, but in no case shall be checked on a lower assembly level. Provided by IHSNot for ResaleNo reproduction or networking per
32、mitted without license from IHS-,-,-MIL- C- 142 42B (MU) 4.4.5.1 Receptacle, molded (dwg. C7542952, covering a detail of dwgs. D7542941 and D7542942). . Cat egories Defects Met hod of inspect ion Marl or 101. 4.4.5.2 I AQL O. 65 percent defective Depth of contact charging hole from top of receptacle
33、 Gage ig. lock. (Alternates to be selected by user, 3 6.1.1). 4.4.5.2.1 Ring,. lock, receptacle, expanding (dwg. C10402534, covering a detail of dwps. D7542941 and D7542942). Categories Defects Method of inspection Major AQL O. 65 percent defective 101. Inside diameter Gage 102. Outside diameter, ma
34、ximum Gage 103. Height, minimum Gage 104. Plating damage Visual (DS-1) OR 4.4.5.2.2 Ring, receptacle, lock (dwg. 37542940 covering a detail of dwas. D7542941 and D7542942). Categories Major 101. 102 * 103. Minor 201. 202. 203. 204. 205. Defects AQL O. 65 percent defective Major diameter of thread Pi
35、tch diameter of thread Plating damaged AQL 2.50 percent defective Alignment of inside diameter with pitch diameter Width of slot, minimum Depth of slot , minimum Burr Bottom chamfer missing from thread Method of inspection Gage Gage Visual (DS-1) Gage Gage Gage Visual Visual OR 4.4.5.2.3 Ring, recep
36、tacle, lock (plastic) (dwg. B11002581 covering a detail of dwgs. D7542941 and D7542942). Categories Defects Method of inspection Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-14242B (MU) Categories Defects Method of inspection Hinor AQL 2.50
37、percent defective 201. Alignment of inside diameter with pitch Gage 202. Width of lugs, minimum Gage 203. Height of lugs, minimum Gag e 204. Burr or obstruction on thread and Visual 205. Bottom chamfer missing from thread Visual di ame t er mating surface areas 4.4.5.3 Fuze plug assembly (dwg. D7542
38、943 covering details of D7542941 and D7542942). Categories Major 101. 102. 103. 104, 105. 106. 107. 108. 109. 110. 111. 112. 113. Defects- AQLO. 65 percent defective - Failure of fuze-plug to enter functional gage Length o ground contact from shoulder to forward edge of contact surface Distance from
39、 large shoulder on ground contact to tip of 300-volt pin Distance from shoulder on ground con- tact to rear edge of 24-volt contact surface Distance from shoulder on ground con- tact to far edge of 24-volt contact surf ace Distance from shoulder on ground contact to rear edge of external firing cont
40、act surface Outside diameter of external firing contact Width of groove on ground contact Diameter of groove on ground contact Outside diameter of forward section of ground contact Outside dicameter of 300-volt contact pin Outside diameter of 24-volt contact Length of neck on 300-volt contact pin, m
41、inimum. Method of inspection - Gage Gag e Gage Gage Gage Gage Gage Gag e Gage Gage Gage Gage Gage 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-14242B 13 H 9399906 0296078 8 H - - MIL-C-14242B (MU) 4.4.5.4 Cable assembly, fuze control (dwg
42、s. D7542941 and D7542942). Categories Mai or 101. 102, 103. 104. 105. Minor 201. 202. 203. 204. 205. 206. 207. 208. 209. 210. Defects AQL 0.65 percent defective Distance from base surface of bottom seal or excess potting compound to bottom surface of receptacle, minimum Contact rings not flat with t
43、op receptacles Potting compound not covering elec- trical connections or below inside surface of the bottom seal Bare wire or solder exposed through molding compound greater than 1/16-in. from point of soldering Cordage exposed which changes the con- tour of the fuze plug AQL 4.00 percent defective
44、Outside diameter of bottom seal across legs, minimum Height of flange of bottom seal above bottom of re cep t acle Foreign matter Plating damaged or defective Marking missing, misleading, or illegible Assembly damaged other than damaged plating or exposed wire Seal and ring assembly not secured unde
45、r 24-volt contact Marking sleeve not on short length of cable (if applicable) Wire not corrugated (if applicable) Bare wire or solder exposed through molding compound Method of inspection Gage Gage Visual(DS-2) Visual Visual(DS-3) Gage Visual Vis ual (DS -4 ) Visual ( DS-5) Visual Visual (DS-6) Vis
46、ual-Manual Visual ,Visual Visual 4.4.5.5 Packaging. Categories Defects Maj or AQL 0.65 percent defective 101. Envelope not completely sealed 102. Envelope punctured or tom - Minor 201. AQL 1.00 percent defective Wrapper missing or improperly assembled Me th od of inspection Visual Vis uai Visual - -
47、 Visual - a 202. Marking on envelope missing or illegible ., Cellophane or plastic under lock ring missing or insufficient - Vilsual 203. 8,- YI- 7 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.MIL-C-L4242B 13 m 9939906 0296077 T 4.4.5.6 Box (Le
48、vel A or C). before sealing. De fe cts Method of inspection - Cat ego ries Mai or AQL 0.65 percent defective 101. Item missing 102 D Box tom or punctured 103. Foreign material present Visual Visual Visual AQL 1-00 percent d-efective . Hinor 201. Carton damaged or contaminated, but not Visual 202. Im
49、proper sealing of bottom Visual torn or punctured 4.4.5.7 Box (Level A or )3 after sealing. Categories -I_ Defects Me tho d of inspect ion Haj ar AQL 0.65 percent defective 101. Improperly sealed 102. 103. Sleeve missing 104. Marking missing or illegible Straps missing or improperly applied Visual Visual Visual V
