1、MIL-F-48382A (AR) 1 July 1985 SUPERSEDING MIL-F-48382 (AR) 18 January 1977 MILITARY SPECIFICATION FUZE, M934E6, IMPACT 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
2、Defense. U 1. SCOPE 1.1 Scope. This specification establishes the performance, 1 test, manufacture and acceptance requirements for the impact switch for use in the M934E6 Fuze assembly. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. Unless otherwise specified,
3、the following specifications and standards of the issue listed in that issue of.the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation, form a part of this specification to the extent specified herein. SPECIFICATIONS MILITARY MIL-A-48078 - Ammunition,
4、Standard Quality Assurance Provisions, General Specification for MIL-S-45743 - Soldering, Manual Type, High Reliability, Electrical Connections, for Missile Systems, Procedures for Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving thi
5、s document should be addressed to: Commander, US Army Armament Research an distribution is unlimited. THIS DOCUMENT CONTAINS .-af I I I I I l i. I l O I l l l t I l I I I I I l l I l l MIL-F-48382A (AR) The impact switch shall function when subjected to a lateral acceleration along any axis perpendi
6、cular to the M-N axis, Figure 1, of 240 g or greater and shall not function when subjected to a lateral acceleration of 130 g or less. AXIAL REFERENCE LINE i ADDFD FOR TEST 4.5.6 SHOULDER A OF FLIGHT NOTE: “CENTER OF SWITCH“ IS DEFINED AS 0.195 INCHES IN SHOULDER A THE M.TO-N DIRECTION FROM i FIGURE
7、 1. Impact switch assembly (9297012) - _L- - I- I 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2.2. Velocity -A- change sensitivity. The impact switch shall function when subjected to an increase in longitudinal velocity in the M to N directio
8、n along the M-N Axis, Figure 1 of equal to or greater than 22 in/sec. applied in 150 microseconds or less and shall not function when subjected to an.increase in longitudinal velocity in the M to N direction along the M-N axis of equal to or less than 14 in/sec. applied in 150 microseconds or less.
9、switch function shall be less than 1 ohm. 3.2.3 Resistance. - The resistance between switch leads during 3.2.4 Insulation resistance. The insulation resistance shall -y- be a minimum of 10 megohms. 3.2.5 - Particle noise. The impact switch assembly shall not exhibit noise in excess of 40 millivolts
10、peak amplitude when subjected to particle impact noise detection test. 3.2.6 - Transportation vibration. Following vibration, the switches shall meet the performance requirements of 3.2.1 through 3.2.4. 3.2.7 Handling - shock. After handling shock the switches shall meet the performance requirements
11、 of 3.2.1 through 3.2.4. 3.2.8 -_I Temperature. Switches shall meet the performance requirements of 3.2.1 through 3.2.4 after exposure to the storage temperature environment between +160F degrees and -50F degrees and during exposure to operating temperatures between +140F degrees and -50F degrees. 3
12、2.9 Vibration-acceleration, - operating. The impact switch contacts shall not close while the switch is exposed to accelera- tion vibration. After vibration the switch shall meet the performance requirements of 3.2.1 through 3.2.4. shall be no evidence of physical damage and the switches shall meet
13、the performance requirements of 3.2.1 through 3.2.4. 3.2.10 Chock-operating. -_II_ Following the shock test, there 3.3 Dimensions. Dimensional requirements shall be as 3.4 Visual. Switches shall be examined for compliance with 3.5 First article - inspection. This specification contains Requirements
14、specifi-ed in the detail drawings. the detaimi.ng. technical provision for first article inspection. for the submission of first article samples by the contractor shall be as specified in the contract. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
15、,-O O O 1 1 MIL-F-qB302A 13 H 7797706 0317bhb T M - - - MIL-F-48382A (AR-) 3.6 Assembly conditions. The impact switch shall be assembled in an environmentally controlled room. The temperature of the room shall be maintained at 75 +10F degrees. Relative humidity shall be maintained at 30 to 50 percen
16、t. A positive pressure differential of 0.2 inches of water shall be maintained in the room. meet, as a minimum, the requirements of a Class 10,000 environment as defined in Federal Standard No. 209B. The work station for the assembly operation shall 3.7 Workmanship. The switch shall be fabricated an
17、d finished in a thorough, workmanlike manner. It should be free of burrs, chips, sharp edges, unblended radii, cold solder joints, cracks, surface defects, dirt, grease, rust, corrosion products and other foreign matter. The cleaning methods used shall not be injurious to any part, nor shall the par
18、ts be contaminated by the cleaning agents. 4. QUALITY ASSURANCE PRVICIONS 4.1 Responsibility for inspection. Unless otherwise specified herein or in the contract, the provisions of MIL-A-48078 shall apply and are hereby made a part of this detail specification. 4.2 Classification of inspections. See
19、 MIL-A-48078. The following types of inspection shall be conducted on the item. a. First Article Inspection b. Quality Conformance Inspection art 4.3 First article inspection. 4.3.1 Submission. The contractor shall submit a first cle sample as designated by the contracting officer for evaluation in
20、accordance with the provisions of 4.3.2. The first article sample shall have passed the applicable criteria of 4.4.2.1 to 4.4.2.8. The first article sample shall consist of the following items in the quantities listed. Part description Screw, Contact - Impact Switch Housing, Switch - Impact Support,
21、 Ball - Impact Switch Spring, Contact - Impact Switch Header - Impact Switch Terminal, Stud Contact, Electrical - Impact Switch Switch Assembly - Impact 5 Drawinss 9282 606 9282611 9282614 9282615 9282625 92827 55 9297062 9297012 Quant i ty 5 5 5 5 5 5 5 18 Provided by IHSNot for ResaleNo reproducti
22、on or networking permitted without license from IHS-,-,-MIL-F-48382A 13 m 7797706 03L7667 1 m MIL-F-4838224 (AR) 4.3.2 Inspections to be performed. See MIL-A-48078 and -3 TABLE I specified herein. 4.3.3 Rejection. See MIL-A-48078. f i 6 -i- -, e Provided by IHSNot for ResaleNo reproduction or networ
23、king permitted without license from IHS-,-,-MIL-F-48382A 13 M. 9999906 O339668 3 r O P R L a a a h cr d I Er I c: : II ci c a, c O a E O u 5 c m ci u a a E H I h pl a E a, II) II 4 c u ci B 01 u -4 O ooci cic, c, u m a H I 3i 4 9 v) II 4 c u .c, B 31 ci -4 3 -4 ci o, c -4 ci rd k a, a O Provided by
24、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-cv 8 t cv a m ci c al 8, 8 3 u a 4 ci i w 1 al H I h m : .o U *d 3 VJ d cv m d In w 12 cv cv cv cv cv Cu cv d d d d d d * d d e d 1. d d m m .m m m m 0 m m. m m 0 m m d FI d d fi d d m m m m m m m e . e e e . . . e
25、 e e e . e . . e e e o e e e e e . e e 4 4 5 4 5 o e e e e o - 5 e In In In In In In In c s”s -rd E O dlw u me cio c .li OU uid c c *. “I O . Q) n % a E S u C 3 I- n O u3 e E O LL L Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-48382A (ARJ 4.
26、4 Quality conformance inspection. 4.4.1 Inspection lot formation. Inspection lot formation 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 Lev
27、el II. AQL levels and requirements for 100 percent inspection are specified in 4.4.2.1 through 4.4.2.8. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IL-F-q382A 13 = 7779906 0313b7L 3 m I!? Y ta 8 Y Y Z O F u aJ v) aJ u (d aJ L 3 m 0 3 4: r- r- -
28、 n -i 6 3 9 E L O LL -4 h U 4 - C 01 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-48382A 13 997970b 0319678 b 9 dPd dpdpdPdpdP o o rlrlrlrlrl ooooo c1 cv 00000 ooooo * o Tr rl 01 Provided by IHSNot for ResaleNo reproduction or networking p
29、ermitted without license from IHS-,-,-MIL-F-48382A 13 U 0b 0319b77 8 W 8 .ri JJ (d k 8 3 gl -rl n *rl u Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-48382 33pC77q7qOb 0337580 W - MIL-F-48382A (AR) O 4.4.3 Testing to be performed. All tests a
30、re specified in 4.4.2.1 through 4.4.2.8. 4.4.4 Inspection equipment. The inspection equipment required to perform the examinations and tests prescribed in this specification is identified, either directly or by reference, in the “Paragraph Reference/Inspection Method“ column of the First Article or
31、Quality Conformance Inspection Tables herein. The con- tractor shall submit inspection equipment designs to the Government for approval 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 accordanc
32、e with the test conditions specified in the General Requirements of MIL-STD-331. 4.5.1 Steady state acceleration sensitivity, 4.5.1.1 Lonqitudinal acceleration. The switch shall be positioned on shoulder A on a centrifuqe such that the acceleration on the switch is in the M-to N direction along the
33、longitudinal M-N Axis, Figure 1. To verify switch function, the centrifuge shall be operated such that the acceleration at the center of the switch, defined in Figure 1, is 165g + 2g. To verify switch nonfunction, the centrifuge shall be operated such that the acceleration at the center of the switc
34、h, defined in Figure I, is 130g - 2g. 4.5.1.2 Lateral acceleration. The switch shall be positioned on a centrifuge such that the acceleration is perpendicular to the M-N Axis, Figure I. To verify switch function, the centrifuge shall be operated such that the acceleration at the plane perpendicular
35、to the M-N Axis of the switch is 240g + 2g. To verify switch nonfunction, the centrifuge shall be operated such that the acceleration at the plane perpendicular to the M-N Axis of the switch is 13Og-2g. 4.5.2 Velocity chanqe sensitivity. The switch shall be positioned on shoulder A on a ballistic pe
36、ndulum such that the resultant G force on the switch is in the longitudinal M to N direction along the M-N Axis, Figure 1. For verification of switch function, the switch shall be subjected to a velocity change of 22.0 + 025 in./sec. applied in 150 microseconds or less. For verification of switch no
37、nfunction, the switch shall be subjected to a velocity change of 14.0 - 0.25 in./sec. applied in 150 microseconds or less. 19 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-48382A (AR) 4.5.3 Resistance. This test shall be conducted while the l
38、ongitudinal acceleration test of 4.5.1.1 is being performed. The circuit resistance of the switch during closure shall be measured by the voltmeter-ammeter method using a test current of 20 milliamps and an open circuit voltage of 40 volts - +2 volts. 4.5.4 Insulation resistance. The resistance betw
39、een the two switch leads shall be measured with a megohmeter at a potential of LOO - t 10 volts DC. 4.5.5 Particle impact noise detection (PIND). The impact switch assembly shall be subjected to a 200g shock pulse followed within 250 milliseconds by a 5g, 40 hertz vibration for a minimum duration of
40、 10 seconds, along S-T axis, Figure 1 4.5.6 Transportation vibration. Transportation vibration shall be conducted in accordance wrth MIL-STD-331, Test 119, Procedure 2, with the following clarifications: a. Application: Parallel to each of the three major axes of Figure 1, with support applied to th
41、e entire outer surface of the switch case, (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 109 peak. 4.5.7 Handling shock. Switches shall be hard mounted to a su
42、itable 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 c. Pulse duration: 3 +2, -1 Milliseconds d. Direction: Perpendicular to M-N Axis of Figure 1 (any quadrant) 4.5.8 Temperature. Switches shall b
43、e stabilized for one hour at each of the temperatures specified in 3.2.8. Switches shall be tested at either of the operating temperature extremes. 4.5.9 Vibration - acceleration, operating. Switches shall be subiected to acceleration vibration in accordance with MIL- 4 STD1810CI Method 514.2, Proce
44、dure V, Part Number 2, Curve AG, the duration being 5 minutes per axis. The switches shall be vibrated 20 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-V382A 13 W 3939906 0317b2 MIL-F-48382A (AR.) along the two major axes - longitudinally alo
45、ng the M-N Axis of Figure 1, and transverse along any plane perpendicular to the M-N axis of Figure I. The switch shall be monitored in accordance with 4.5.3. 4.5.10 Shock-operating. Switches shall be mounted against shoulder A w?th theM-N axis vertical, contact screw downward, and subjected to a fr
46、ee-fall shock developing the following attributes: a. Intensity: 250 +O - 20G b. Pulse shape: Half sine, per MIL-STD-810C, c. Pulse duration: 3 +1 milliseconds d. Resultant Parallel to the M-N axis in an N Method 516.2, Figure 516. 2-2 Deceleration-Force to M direction Direction 5. PACKAGING - 5.1 P
47、ackaging requirements. Switches shall be prepared for - delivery in accordance with packaging and packing requirements specified in MIL-STD-1169 unless otherwise specified in the detail drawing. 6. NOTES 6.1 Intended use. The impact switches covered by this specification are intended for use on the
48、M934E6 Fuze. 6.2 Sensor characteristics. An impact switch closure is defined as a reduction in resistance to less tban one ohm. Multiple closures or bounces are acceptable since the leading edge of the first impact switch closure of greater than 30 microseconds duration is the timing reference point or the Variable Delay. 6.3 Ordering data. See MIL-A-48078. 6.4 Submission of designs for approval. See MIL-A-48078. Submit equipment designs, as required to Commander, Am, ATTN: AMCMC-QAR-I (D), Dover, NJ 07801-SO01 . 6.5 Drawings. Drawings listed in Section 2 of this
