1、1 July 1985 SUPERSEDING which may be of use in improving this document should be addressed to! Commander, us Army Armament Research and Development Center, Attni AMSMC-QA, Dover, New Jersey 07801-5001 bj ushg the self-addressed Standardization Document Improvement MIL-F-48388 (AR) 18 January 1977 MI
2、LITARY SPE CI FI CAT ION FUZE, M934E6, LAUNCH SENSING SWITCH FOR This specification is approved for use by US Army Armament, Munitions and Chemical Command, and is available for use by all Departments and Agencies of the Department of Defense, 1. SCOPE 1.1 Scope. This specification establishes the p
3、erformance, test, manwure and quality assurance requirements for the launch switch for use in the M934E6 Fuze Assembly. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. Unless otherwise speci- fied, the following specifications and standards of the issue listed i
4、n that issue of the Department of Defense Index of Specifi- cations and Standards (DoDISS) specified in the solicitation, form a part of this specification to the extent specified herein. SPEC1 FI CATIONS O MILITARY MIL-A-48078 - Ammunition, Standard Quality Assurance Provisions, General Speci ficat
5、ions for STANDARDS FEDERAL FED-STD-209 - Clean Room and Work Station Requirements, Controlled Environment FSC 1336 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. THIS DOCUMENT CONTAINS PAGES Provided by IHSNot for ResaleNo reproduction or networking permitted witho
6、ut license from IHS-,-,-MIL-F-48388A 13 H 777770b 0337758 4 MIL-F-48388A (AR) MILITARY MIL-STD-105 - Sampling Procedures and Tables for I nspec t ion by At t ri but es MIL-STD-202 - Test Methods for Electronic and Electrical Component Parts MIL-STD-331 - Fuze and Fuze Components, Environmental and P
7、erformance Test or MIL-STD-810C - Environmental Test Methods MIL-STD-1169 - Packaging, Packing and Marking for 6 Shipment of Inert Ammunitions Components, General Specifications for 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and
8、publications form a part of this specification to the extent specified herein. DRAWINGS US ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER (ARDC) I 9297015 - Switch Assembly, Launch (Copies of specifications, standards, handbooks, drawings, and publications required by manufacturers in connection with
9、 specific acquisition functions should be obtained from the mntracting asctivity or as directed by the contracting officer.) In the event of a conflict between the text of this specification and the references cited herein, the text of this specification shall take precedence. O 2.1.3 Order of prece
10、dence. 3. REQUIREMENTS 3.1 Materials. Parts, materials, and processes shall be in accordance with the applicable drawings, specifications and standards . 3.2 Perf ormance characteri st ic. 3.2.1 Launch acceleration sensing. The launch switch shall function when subjected to a longitudinal accelerati
11、on in the N to M direction along the M-N Axis of Figure 1, of 2% or greater and shall not function when subjected to a longitudinal acceleration in the N to M direction along the M-N Axis of 23g or less. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
12、,-,- MIL-F-48388A 13 7779906 0317757 b MIL-F-4 83 8 8A (AR) 3.2.2 Closinq time. The closing time for the launch switch shall be 10 57 milliseconds. O 3.2.3 Lead resistance. The resistance between switch leads s during switch function shall be less than 5 ohms. 5 3.2.4 Insulation resistance. The insu
13、lation resistance shall be a minimum of 10 megohms. 3.2.5 Solderability. The dipped surface of the termination shall be at least 95 percent covered by a continuous new solder coating, and shall not have pinholes or voids that are concentrated in one area or that exceed 5 percent of the total area. 3
14、.2.6 Transportation vibration. Following vibration, the switches shall meet the performance requirements of 3.2.1 thru - - 3.2.4. 3.2.7 Handling shock. noilowing handling shock, the switches shall meet the requirements of 3.2.1 thru 3.2.4. 3.2.8 Temperature. The switches shall meet the performance r
15、equirements of 3.2.1 thru 3.2.4 after exposure to the storage temperature environments, i.e. between +160OF and -50F and during exposure to the operating temperatures between +1400F and -500F. 3.2.9 Vibration - acceleration, operatinq. The launch switch contacts shall not close while the switch is e
16、xposed to accelera- tion vibration. After vibration, the switches shall meet the performance requirements of 3.2.1 thru 3.2.4. O 3.2.10 Shock, operatinq. Following the shock test, there shall be no evidence of physical damage and the switches shall meet the performance requirements of 3.2.1 thru 3.2
17、.4. 3.3 First article inspection. This specification contains technical provision for first article inspection. Requirements for the submission of first article samples shall be as specified in the contract. 3.4 Assembly conditions. The launch switch shall be assembled in an environmentally controll
18、ed room. The temperature of the room shall be maintained at 75OF +lOF. Relative humidity shall be maintained at 30 to 50 percent. A positive pressure differential of 0.2 inches of water shall be maintained in the room. The work station for the assembly operation shall meet, as a minimum, the require
19、ments of a Class 10,000 environment as defined in FED-STD-20 9. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-48388A 13 i 93Ob 03197b0 2 W MIL-F-4838BA (AR) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
20、nse from IHS-,-,-MIL-F-4 83 88A (AR) 3.5 Workmanship. The launch switch shall be fabricated and finished in a thorough, workmanlike manner. It shall be free of burrs, chips, sharp edges, unblended radii, cold solder joints, cracks, surface defects, dirt, grease, rust, corrosion products and other fo
21、reign matter. The cleaning methods used shall not be injurious to any part, nor shall the parts be contaminated by the cleaning agents . 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection and standard quality assurance provisions. Unless otherwise specified herein or in the contract,
22、the provisions of MIL-A-48078 shall apply and are hereby made a part of this detail specification. 4.2 Classification of inspections. The following types of inspection shall be conducted on this item: a, First Article Inspection b. Qualiy Conformance Inspection 4.3 First article inspection. 4.3.1 Su
23、bmission. The contractor shall submit a first article sample as designated by the Contracting Officer for evaluation in accordance with the provisions of 4.3.2. The first article sample shall have passed the applicable criteria of 4.4.2.1 through 4.4.2.11. The first article sample shall consist of t
24、he items in the quantities listed herein. PART DISCRIPTION Contact, Electrical-Launch Switch, Inner Contact, Electrical-Launch Switch, Outer Housing, Switch Spring, Helical, Compression-Launch Switch Contact Electrical-Launch Switch Plug, Contact-Launch Switch Rivet, Tubular-Launch Switch Weight-Lau
25、nch Switch Contact Assembly-Launch Switch Weight Assembly-Launch Switch Switch Assembly-Launch DRAWING NO. QUANTITY 92 97058 92 97057 92 97055 92 97060 9282612 92 9705 9 92 970 56 92 97061 92 97013 92 97014 92 97015 4.3.2 Inspections to be performed. See MIL-A-48078 and Table I specified herein. 5 5
26、 5 5 5 5 5 5 5 5 18 4.3.3 Rejection. See MIL-A-48078. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-In cu O OD I4 U eiw 2 a Q, O w o) kC -4 o U *rl JJ . vw 6 l I I I Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
27、ense from IHS-,-,-n O Y m a U c Q, fi 8 u 5 c m % U MIL-F-48388A 13 797770b 03177b3 B U 8 * b b b w o . tD r P VI 1 a cv c cv cv cv m cv cv rl cv w a 4 a: T 4 4 4 T P 4 4 4 a: in VI m m a b a u) VI u m m ci 0 m N e o VI VI m m b . . o o c o w 4 c w rl rl rl rl rl m m m m u) VI Ir VI VI VI VI m 81 5
28、a U 0 a 4 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.i +i U E z rl o) i-I U .ri u k Id u u) Fi -rl Er H w a ti m 8 t cr) H Fi c NIL-F-q388A 33 = 777770b 0337764 T W O al 6 rl Cu cv cv a a e * e e v) v) v) m m m d d FI m m m o o . o o o o 0 .
29、* o o b . c . . o u) JJ P o) W u) r, I l I +I I I I I I 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-F-Y388A 33 997770b 0337765 3 _ MIL-F-4 83 88A (AR) 4.4 Quality conformance inspection 4.4.1 Inspection lot formation. Inspection lot format
30、ion shall be in accordance with MIL-A-48078. O 4.4.2 Examination. Examination shall be in accordance with MIL-A-48078. Unless otherwise specified, sampling shall be in accordance with MIL-STD-105, Inspection Level II. AQL levels, and requirements for 100 percent inspection are specified in 4.4.2.1 t
31、hrough 4.4.2.11. t i. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 8 t d I k c 2 H s 4 *rl 5 I) (u I Id GI I rl Id U .rl k 4J U al 4 w u o Id 4J u w 8 d cv w w 0 0 - 2 4J w O a Q O 4J al E *rl rl l I ! . op0 o a,c kds u 12 Provided by IHSNot f
32、or ResaleNo reproduction or networking permitted without license from IHS-,-,-rl a, X c: U mu c -4 -4 3 M SM cr cv * d . . - 5 tn c al rl al Tl a s !? a -4 c a E x SI 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-b ri MIL-F-Ll3A 13 E 777770b 031
33、7770 5 m ua 3 FI“ u) mm o e e dP II 4 O a 2 .rl W Q, a o) 8 B pi .rl 14 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-n o% 8 t 4 tB (v * * e e e a MIL-F-4838A 13 W 7779706 0319773 7 - x c -rl Vim il 15 Provided by IHSNot for ResaleNo reproduction o
34、r networking permitted without license from IHS-,-,-t a IIL-F-q8388A 33 797770b 0337772 7 m 6, 6,u I I x c a F 1 C .rl rw a, a a, C *Al kI kl .; 16 3 L n 3 -I 4- O c O - c Y 8 v) a, u 9. L a, n O W tl E L O LL 0 4 c I - c 5 Q t Provided by IHSNot for ResaleNo reproduction or networking permitted wit
35、hout license from IHS-,-,-UIL-F-q8388A 13 979996 0319773 O W . I _. 00 cv f * e e e - a k B Y( k a -. 17 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-rl In m m b dP dp In O (v f O O o b a .rl O rl E 21 m n “o 4 I c r v Q c 1 Provided by IHSNot for
36、 ResaleNo reproduction or networking permitted without license from IHS-,-,-e E c Li; H r a v) G U *d 3 tli O 4 (Y w d rn - MIL-F-48388A 23 9777906 0327775 4 i rl In m * O O00 d O00 o rlrld O c a, rl 01 20 E O LL h “O 4 I c 31 v (1 c Provided by IHSNot for ResaleNo reproduction or networking permitt
37、ed without license from IHS-,-,-MIL-F-48388A 13 7797706 0317777 8 m . F al U U E k al a m .rl U O al W al a 2 5 4 3 02 U E I In E m 4 5 hl b h) ti a B 2 o: e Fri O 8 u m E *d U m k O E PI dl ci O pi c3 a a c -d Y( al a al c O !z 8 U m a“ .A 3 E O -d JJ u m 8, c k E -i Provided by IHSNot for ResaleNo
38、 reproduction or networking permitted without license from IHS-,-,-MIL-F-483A 13 m 777790b 0317778 T m MIL-F-48388A. (AR) 4.4.3 Testing to be performed. All tests are specified in 4.4.2.1 through 4.4.2.11. ,4.4.4 Inspection equipment. The inspection equipment required to perform the examinations and
39、 tests prescribed in this specification is identified, either directly or-by reference, in the “Paragraph Reference/Inspection Method“ column of the First Article or Quality Conformance Inspection .Tables herein. The con- tractor shall submit inspection equipment designs to the Government for approv
40、al in accordance with the terms of the contract. See 6.4. 4.5 Methods of inspection. Unless otherwise specified herein, all inspections shall be performed in accordance with the test conditions specified in the general requirements of M IL-STD-33 1. 4.5.1 Launch acceleration sensinq. The switch shal
41、l be positioned on a centrifuge such that the resultant acceleration on the switch is in the N to M direction along the longitudinal M-N Axis of Figure 1. To verify switch function, the centrifuge shall be operated such that the acceleration at the Launch Switch Weight center of gravity, defined in
42、Figure 1, is 29 + 0.5g. To verify switch non-function, the centrifuge shall be operated such that the acceleration at the Launch Switch Weight center of gravity, defined in Figure 1, is 23 - 0.5g. 4.5.2 Closing time. The switch shall be mounted on a shock machine capable of producing a 29 + 0.5g squ
43、are wave pulse of 17 to 20 milliseconds in width. An accelerometer shall be mounted on the drop fixture to measure the shock pulse. Data shall be recorded showing the shock pulse and closure time of the launch switch using a storage oscilloscope. The wave forms shall be photographed to provide a per
44、mnent record of the test. switch closing time, the launch switch shall be subjected to an acceleration in the N to M direction along the longitudinal M-N Axis of Figure 1. To verify 4.5.3 Lead resistance. This test shall be performed while the launch acceleration sensing test of 4.5.1 is being perfo
45、rmed. The circuit resistance of the switch during closure shall be measured by the voltmeter-ammeter method using a test current of 20 milli-amps and an open circuit voltage of 40 - + 2 volts. 4.5.4 Insulation resistance. The resistance between the two switch leads shall be measured with a megohmete
46、r at a potential of 100 + 10 volts. - 22 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-;. c MIL-F-48388A 23 7777706 0327777 L - MIL-F-48388A (AR) 4.5.5 Solderability. Solderability shall be performed as specified in MIL-STD-202, Method 208. e- 4.5.
47、6 Transportation vibration . Transportation vibration shall be conducted in accordance with MIL-STD-331, Test 119, Proce- dure 2, with the following clarifications: a. The switch shall be mounted parallel to each of the three major axes of Figure 1, with support applied to the entire outer surface o
48、f the switch (no cantilevering). b. The switch shall be vibrated at a frequency of 50 +2.5 hertz for a duration of 60 +3 minutes along each of the three major axes. Intensity of vibration shall be log peak. 4.5.7 Handlinq shock. Switches shall be hard mounted to a suitable fixture and subjected to a shock test as follows: 400 + 32g a. Intensity: - b. Pulse Shape: Half sine, per MIL-STD-810C, Method 516.2, Figure 516.2-2
