1、INCH-POUNDMIL-DTL-85760A (OS)11 July 2003SUPERSEDINGMIL-I-85760 (OS)1 August 1986DETAIL SPECIFICATIONIGNITER, MK 304 MOD 0This specification is approved for use within the Naval Sea Systems Command, Department of the Navy, and isavailable for use by all Departments and Agencies of the Department of
2、Defense.1. SCOPE1.1 Scope. This specification covers the requirements for the manufacture and acceptance of the MK 304MOD 0 Igniter (see 6.1).2. APPLICABLE DOCUMENTS2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification.This section does not include
3、 documents cited in other sections of this specification or recommended foradditional information or as examples. While every effort has been made to ensure the completeness of thislist, document users are cautioned that they must meet all specified requirements documents specified insections 3 and
4、4 of this specification, whether or not they are listed.2.2 Government documents.2.2.1 Specifications and standards. The following specifications and standards form a part of thisdocument to the extent specified herein. Unless otherwise specified, the issues of these documents are thoselisted in the
5、 issue of the Department of Defense Index of Specifications and Standards (DODISS) andsupplements thereto, cited in the solicitation (see 6.2).STANDARDSDEPARTMENT OF DEFENSEMIL-STD-331 Fuze and Fuze Components, Environmental and Performance Tests forMIL-STD-810 Environmental Test MethodsMIL-STD-1168
6、 Ammunition Lot Numbering and Ammunition Data CardBeneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving thisdocument should be addressed to the Commander, Indian Head Division, Naval Surface Warfare Center, EngineeringDocumentation Branch
7、 (Code 4230), 101 Strauss Avenue, Indian Head, MD 20640-5035, by using the StandardizationDocument Improvement Proposal (DD Form 1426) appearing at the end of this document or by sending a letter.AMSC No. N3892 FSC 1340DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
8、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85760A(OS)2MIL-STD-1916 DoD Preferred Methods For Acceptance Of ProductDOD-STD-2101 Classification of Characteristics(Unless otherwise indicated, copies of the above specifications and standards
9、 are available from:Standardization Documents Order Desk, 700 Robbins Avenue, Bldg. 4D, Philadelphia, PA 19111-5094)2.2.2 Other Government documents, drawings, and publications. The following other Governmentdocuments, drawings, and publications form a part of this document to the extent specified h
10、erein. Unlessotherwise specified, the issues are those cited in the solicitation (see 6.2).DRAWINGSNaval Air Systems Command (Code Ident 30003)DL1638AS106 Igniter, Mk 304 Mod 0Naval Ordnance Station, Indian Head, Maryland (Code Ident 14083)DL560-174-001 Test Chamber, Mk 304 Mod 0(Application for cop
11、ies should be addressed to the Commander, Indian Head Division, Naval SurfaceWarfare Center, Documentation Branch (Code 8410), 101 Strauss Avenue, Indian Head, MD 20640-5035.)2.3 Non-Government publications and drawings. The following documents form a part of this documentto the extent specified her
12、ein. Unless otherwise specified, the issues of the documents which are DODadopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, theissues of documents not listed in DODISS are the issues of the documents cited in the solicitation (see 6.2).AMERICA
13、N SOCIETY FOR QUALITY (ASQ)ASQ Z1.9 Sampling Procedures and Tables for Inspection by Variables for PercentNonconforming(Application for copies should be addressed to the American Society for Quality, PO Box 3005, 600 N.Plankinton Ave., Milwaukee, WI 53203)AMERICAN SOCIETY FOR TESTING AND MATERIALS (
14、ASTM)ASTM E 1742 Standard Practice for Radiographic Examination (DoD Adopted)(Application for copies of ASTMs should be sent to the American Society for Testing and Materials, 100Barr Harbor Drive, West Conshohocken, PA 19428-2959)2.4 Order of precedence. In the event of a conflict between the text
15、of this document and the referencescited herein, the text of this document takes precedence. Nothing in this document, however, supersedesapplicable laws and regulations unless a specific exemption has been obtained.3. REQUIREMENTSProvided by IHSNot for ResaleNo reproduction or networking permitted
16、without license from IHS-,-,-MIL-DTL-85760A(OS)33.1 First article. When specified in the contract or order, a sample shall be subjected to first articleinspection (see 4.3 and 6.3).3.2 Conformance to documents. Igniters shall conform to all requirements of this document andDL1638AS106,3.3 Radiograph
17、ic examination (M101). All igniters for the first article test shall be radiograhicallyexamined to determine the presence, location, and condition of components (see 4.5.2).3.4 Circuit resistance (M102). The igniter circuit resistance, as measured from the connector at 70E “10EF, shall be between 0.
18、45 and 0.75 ohms (see 4.5.3).3.5 Ballistic (M103). The igniters shall meet the performance requirements of Table I over the temperaturerange of !40EF to 140EF (see 4.5.4).TABLE I. Ballistic performance requirements.Specification limitCharacteristics1/ Lower (L) Upper (U)Ignition delay (ms)2/ - 15Max
19、imum pressure (psig)2/ 265 470Rise time to 140 psig (ms)2/ - 25Pressure-time-interval area (psig-ms)1240 -1/See 6.4 for definitions2/These characteristics are classified as minor3.6 Workmanship. Igniters and components shall be free from foreign material, dents, scratches, split orcracked components
20、, poor quality welds, chipping or flaking of painted metal surfaces, sharp edges or otherdefects or discontinuities as specified on the applicable drawings.4. VERIFICATION4.1 Classification of inspections. The inspection requirements specified herein are classified as follows:a. First article inspec
21、tion (see 4.3)b. Lot acceptance test (LAT) (see 4.4)4.2 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shall be performed asspecified in the applicable test method of 4.3.3 or 4.5.4.3 First article inspection. First article inspection shall be performed after award of c
22、ontract and prior toproduction by a facility designated in the contract or order (see 6.2 and 6.4). First article inspection shall beperformed on sample units which have been produced using the same materials, equipment, processes andprocedures as will be used in production; All parts and materials,
23、 including packaging and packing shall bethe same as used for production and shall be from the intended sources of supply.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85760A(OS)44.3.1 Sample size. Twenty-four igniters shall be submitted fo
24、r first article inspection.4.3.2 Inspection routine. The igniters shall undergo the tests specified in Table II in the exact sequenceshown.4.3.3 Test and treatment.4.3.3.1 Transportation vibration. The igniters shall be subjected to a composite version of MIL-STD-810,Method 514.5, Procedure I, Categ
25、ory 4, Truck Transportation over U.S. Highways, for 3 hours per axis for atotal of 9 hours. The composite transportation vibration profile is provided in Figure 1. Each igniter shall bein its shipping configuration for the test. The igniters shall be temperature conditioned to the temperaturesspecif
26、ied in Table II for 8 to 9 hours prior to test and maintained at the temperature specified in Table II forthe duration of the test.0.00010.0010.010.111 10 100 1000FREQUENCY (Hz)PSD (g2/Hz)BreakpointsFrequency (Hz) 10 40 120 121 200 240 250 500PSD Value (g2/Hz) 0.01500 0.01500 0.002000 0.00300 0.0030
27、0 0.00150 0.00050 0.00015FIGURE 1. Transportation vibration profile for vertical, longitudinal and transverse axes.4.3.3.2 Temperature and humidity. Igniters shall be subjected to the temperature and humidity test ofMIL-STD-331, Test 105.1, except that the temperature extremes shall be !40F and +140
28、F and only one14-day cycle shall be performed. The igniter shall be tested bare.4.3.3.3 Drop test. The igniters shall be dropped from 2 feet, measured from the lowest point on the igniter tothe impact surface. The impact surface shall be a 2-inch thick steel plate (Brinell hardness of not less than2
29、07) embedded in not less than of 2 feet of reinforced concrete. Two igniters shall be temperatureconditioned and maintained at !40EF and two at 140EF. Of these, two (one from each temperature) shall bedropped on the bottom surface of the igniter plug and two (one from each temperature) dropped on th
30、e flangeof the igniter case.4.3.4 Failures. Failure of any igniter to pass the first article tests shall be cause for first article rejection.4.4 Lot acceptance test. Lot acceptance test shall consist of the tests specified in Table III (see 6.2.2).4.4.1 Inspection lot. An inspection lot shall consi
31、st of an igniter lot with no more than one lot ofmagnesium-fluorocarbon and one lot of initiators.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85760A(OS)5TABLE II. First article inspection1.Igniter serial numberInspectionand test 1 2 3 4 5
32、 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 NotesVisual a a a a a a a a a a a a a a a a a a a a a a a a see4.5.1Circuitresistanceb b b b b b b b b b b b b b b b b b b b b b b b see4.5.3Radiographic c c c c c c c c c c c c c c c c c c c c c c c c see4.5.2VibrationAt !40EF d dAt 140EF d dsee
33、4.3.3.1Temp. andhumidityd d d d see4.3.3.22-foot dropAt !40EF d dAt 140EF d dsee4.3.3.3Circuitresistancee e e e e e e e e e e e see4.5.3Radiographic f f f f f f f f f f f f see4.5.2Static fireAt !40EF d d d d d d g g g g g gAt 140EF d d d d d d g g g g g gsee4.5.41 Inspection and tests of each ignit
34、er shall be performed in alphabetical order; i.e., the inspection or test opposite theletter “a” shall be performed first, the inspection or test opposite the letter “b” shall be performed second, etc.TABLE III. Lot acceptance test.Inspection or test Req. para. Method para.Visual 3.6 4.5.1Circuit re
35、sistance 3.4 4.5.3Ballistic 3.5 4.5.44.4.2 Sampling.4.4.2.1 For nondestructive tests. Unless otherwise specified in the applicable test method, sampling for andevaluation of nondestructive inspection shall be in accordance with MIL-STD-1916, variable sampling fornormal inspection, verification level
36、 V, single or double specification limit (as applicable).4.4.2.2 For destructive tests. The ballistics LAT sample for the igniter lot shall be selected and evaluated inaccordance with ANSI/ASQC Z1.9, normal sampling plan, inspection level S4, for each temperature tested.The destructive test shall be
37、 evaluated and accepted in accordance with ANSI/ASQC Z1.9, standarddeviation method, single or double specification limit (as applicable), variability unknown. In the event ofstatic-firing failure, the sample firings will be terminated for the remaining sample units pending dispositioninstructions f
38、rom the procuring activity.4.4.3 Classification of characteristics. The characteristics verified by the tests and examinations herein areclassified as critical, major, or minor in accordance with DOD-STD-2101 Requirements that verify criticalcharacteristics are identified by the symbol (C) and major
39、 characteristics by the symbol (M). The numberfollowing the classification symbol indicates the serial number of the requirement. Requirements which arenot annotated with a classification code are classified minor.4.5 Tests.Provided by IHSNot for ResaleNo reproduction or networking permitted without
40、 license from IHS-,-,-MIL-DTL-85760A(OS)64.5.1 Visual. The igniter samples shall be visually examined for conformance to DL1638AS106.4.5.2 Radiographic. The igniters shall be radiographed in accordance with ASTM E1742, radiographicquality 2-1T for conformance to DL1638AS106 (see 3.3).4.5.3 Circuit r
41、esistance. The igniters shall be checked for circuit resistance by applying 0.010 amperes(maximum) to the initiator assembly circuit at 70E “ 10EF.4.5.4 Ballistic test. The igniter samples selected in accordance with 4.4.2.2 shall be static fired (within10 minutes of removal from conditioning) as sp
42、ecified in 4.4.4.1 through 4.4.4.4.4.5.4.1 Temperature conditioning.a. First article inspection. The igniters for first article inspection shall be temperature conditioned totemperatures specified in Table II. The temperature conditioning time shall be 8 to 9 hours prior to test.Igniters not fired w
43、ithin 10 minutes after removal from the conditioning oven shall be reconditioned 2minutes (over the 10 minutes outside the conditioning chamber). The reconditioning time shall be not morethan 8 hours.b. Lot acceptance test (LAT). Half the igniters for LAT shall be temperature conditioned at !40EFand
44、 the other half at 140EF for 8 to 9 hours prior to test. Igniters not fired within 10 minutes after removalfrom the conditioning oven shall be reconditioned 2 minutes (over the 10 minutes outside the conditioningoven). The reconditioning time shall be not more than 8 hours.4.5.4.2 Test setup. Ignite
45、rs shall be fired in a closed chamber conforming to DL560-174-001. Pressure shallbe measured through the pressure ports of the closed chamber. The igniters shall be fired by energizing theigniter circuit with 28 volts dc at 7.0 + 0.5, !0.0 amperes.4.5.4.3 Instrumentation. All measurements shall be m
46、ade with instruments and systems with a total systemaccuracy, reproducibility, and frequency response that has been approved by the procuring activity.Calibration records of all test equipment shall be maintained and made available to the procuring activityupon request.5. PACKAGING5.1 Packaging. For
47、 acquisition purposes, the packaging requirements shall be specified in the contract orpurchase order (see 6.2 and 6.5). When actual packaging of material is to be performed by DOD personnel,these personnel need to contact the responsible packaging activity to ascertain requisite packagingrequiremen
48、ts. Packaging requirements are maintained by the Inventory Control Points packaging activitywithin the Military Department or Defense Agency, or within the Military Departments System Command.Packaging data retrieval is available from the managing Military Departments or Defense Agencysautomated pac
49、kaging files, CD-ROM products, or by contacting the responsible packaging activity.6. NOTES(This section contains information of a general or explanatory nature that may be helpful but is notmandatory.)6.1 Intended use. The Mk 304 Mod 0 igniter is intended for use as the ignition device for the Rocket MotorMk 117 Mod 0. The igniter is designed for that use only, and thus has no commercial application.6.2 Acquisition req
