1、INCH-POUNDMIL-DTL-60286C12 September 2000SUPERSEDING MIL-I-60286B21 September 1992DETAIL SPECIFICATIONINITIATOR, CARTRIDGE ACTUATED, M53 ASSEMBLYThis specification is approved for use by all Departments and Agencies of the Department of Defense.1. SCOPE1.1 Scope. This specification covers the requir
2、ements for the M53 Cartridge Actuated InitiatorAssembly (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 documents cited in other sections of this specification or recommended for
3、additional information or as examples. While every effort has been made to ensure the completeness ofthis list, document users are cautioned that they must meet all specified requirements documentsspecified in sections 3 and 4 of this specification, whether or not they are listed.2.2 Government docu
4、ments.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 arethose listed in the Department of Defense Index of Specifications and Standards (DODISS) andsu
5、pplement thereto, cited in the solicitation (see 6.2).SPECIFICATIONSDEPARTMENT OF DEFENSEMIL-A-2550 Ammunition, General Specification ForMS28741 Hose Assembly, Detachable End Fitting, Medium PressureBeneficial comments (recommendations, additions, deletions) and any pertinent data which may be of us
6、e inimproving this document should be addressed to: Commander, Indian Head Division, Naval Surface WarfareCenter, Standardization Team (Code 840M), 101 Strauss Avenue, Indian Head, MD 20640-5035 by using theStandardization Document Improvement Proposal (DD Form 1426) appearing at the end of this doc
7、ument, or bysending a letter.AMSC N/A FSC 1377DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-60286C2MIL-DTL-48412 Initiator, Cartridge Actuated, Delay, M53 Rema
8、nufactured Metal PartsAssemblyMIL-DTL-60519 Initiator, Cartridge Actuated, M53 Metal Parts AssemblySTANDARDSDEPARTMENT OF DEFENSEMIL-STD-1168 Ammunition Lot Numbering(Unless otherwise indicated, copies of Department of Defense specifications and standards are availablefrom: Standardization Documents
9、 Order Desk, Bldg. 4D, 700 Robbins Avenue, 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 herein. Unlessotherwise specified, the issues
10、 are those cited in the solicitation.DRAWINGSNaval Surface Warfare Center, Indian Head (CAGE Codes 19200 and 19203)8597230 Cartridge, Impulse, M91 Assembly10520619 Initiator, Cartridge Actuated, M53 Assembly(Application for copies should be addressed to Commander, Naval Surface Warfare Center, India
11、n HeadDivision, 101 Strauss Avenue, Data Control Branch (Code 8410), Indian Head, MD 20640-5035.)2.3 Non-Government publications and drawings. The following documents form a part of thisdocument to the extent specified herein. Unless otherwise specified, the issues of the documents whichare DOD adop
12、ted are those listed in the issue of the DODISS cited in solicitation. Unless otherwisespecified, the issues of documents not listed in the DODISS are the issues of the documents cited in thesolicitation (see 6.2).PUBLICATIONSAMERICAN SOCIETY FOR QUALITY CONTROLASQC Z1.4 Sampling Procedures and Tabl
13、es for Inspection by AttributesASQC A8402 Quality Management and Quality Assurance Vocabulary(Application for copies should be addressed to the American Society for Quality Control, PO Box 3005,611 E. Wisconsin Ave., Milwaukee, WI 53201-4606.)Provided by IHSNot for ResaleNo reproduction or networkin
14、g permitted without license from IHS-,-,-MIL-DTL-60286C3AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)ASTM E 1742 Standard Practice for Radiographic Examination(Application for copies of ASTMs should be sent to the American Society for Testing and Materials, 100Barr Harbor Drive, West Conshohocke
15、n, PA 19428-2959)2.4 Order of precedence. In the event of a conflict between the text of this document and thereferences cited herein (except for related associated specifications or specification sheets), the text ofthis document takes precedence. Nothing in this document, however, supersedes appli
16、cable laws andregulations unless a specific exemption has been obtained.3. REQUIREMENTS3.1 Materials. All materials used in the manufacture of the initiators shall conform to the specificationsreferred to on the respective drawings unless specific approval in writing covering a departure therefromha
17、s been obtained from the cognizant Navy design activity prior to manufacture. When alternatematerials or methods of manufacture are specified on the drawings, the bidders selections shall be clearlystated in the proposal. 3.2 Components.3.2.1 Primary components. For the purpose of this specification
18、, the M91 impulse cartridge (Drawing8597230) is defined as a primary component. Only primary components from a single lot shall be used ina production lot of initiators; however, one primary component production lot may be used in more thanone initiator production lot. 3.2.2 Component parts. All com
19、ponent parts shall meet the applicable requirements ofMIL-DTL-48412 or MIL-DTL-60519 prior to assembly. 3.3 Breakaway torque. The chamber and cap of each assembled initiator shall withstand a breakawaytorque application of 400 inch-pounds without loosening or deformation (see 4.3.1). 3.4 Residual ma
20、gnetism. The initiator shall not deflect the indicator of the compass more than fivedegrees in either direction (see 4.3.2). 3.5 Radiographic examination. Each initiator assembly shall be radiographically examined for defects(see 4.3.3). 3.6 Functional.3.6.1 Ballistics. Initiators loaded with cartri
21、dges from one accepted lot and temperature conditionedshall perform within the pressure values and delay times (see 6.4.1) specified in table I. Pressure valuesshall be recorded at the end of 15 feet of aircraft hose, assembly number MS28741-4, and a pressurechamber with a volume of 1 cubic inch. Pr
22、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-60286C43.6.1.1 Initiation. The initiator shall be fired by a source delivering an output pressure of 700 +25, -0pounds per square inch gage (psig) at 70 5bF. 3.6.2 Misfires. There shall be no misf
23、ires. 3.6.3 Mechanical failures. The initiator shall function without mechanical failure (see 6.4.2). TABLE I. Pressure values.Temperature (bF) Pressure (psig) Ignition delay milliseconds,maxMinimum Maximum-60 to -70 500 1425 6565 to 75 600 1550 65195 to 205 700 1700 653.7 Workmanship. Initiators sh
24、all be free of cracks, splits, or other defects which might prevent propermating with connecting parts or proper functioning of the device. 3.7.1 Metal defects. All components shall be free from cracks, splits, cold shuts, inclusions, porosity, orany similar defect. 3.7.2 Burr. No part shall have a
25、burr which might interfere with the assembly or function of the item orwhich might be injurious to personnel handling the item. 3.7.3 Foreign matter. No part or assembly shall contain chips, dirt, grease, rust, corrosion, or otherforeign matter. 4. QUALITY ASSURANCE PROVISIONS4.1 Classification of i
26、nspections. The inspection requirements specified herein are classified asfollows:a. Conformance inspection (see 4.2).4.1.2 Quality assurance terms and definitions. Reference shall be made to ASQC A8402 to define thequality assurance terms used. 4.1.3 Inspections. Inspections shall be in accordance
27、with MIL-A-2550 and ASTM E1742.4.2 Conformance inspection provisions.4.2.1 Lot.4.2.1.1 Submission or product. Unless otherwise specified by the contracting activity, formation, andidentification of lots shall be in accordance with ASQC Z1.4. Provided by IHSNot for ResaleNo reproduction or networking
28、 permitted without license from IHS-,-,-MIL-DTL-60286C54.2.1.2 Size of lot. The production lot size shall be as specified in the contract (see 6.2). 4.2.2 Examination. One hundred percent examination shall be performed for all critical defects.Examination for major and minor defects shall be perform
29、ed in accordance with the classification ofdefects. Four power (4x) magnification may be used for inspection of such defects as burr and foreignmatter. When compliance with the applicable requirement is in doubt as a result of visual examination,the characteristic shall be measured or gaged to deter
30、mine acceptability. All nonconforming materialshall be rejected. 4.2.2.1 Cartridge, Drawing 8597230, covering a detail of Drawing 10520619.Characteristics Defect Method of InspectionCritical1 Mixed cartridges Visual2 Metal defective VisualMajor101 Foreign matter present VisualMinor201 Case scratched
31、, wrinkled, bulged, or dented Visual202 Varnish missing or inadequate Visual4.2.2.2 Assembly, Drawing 10520619, less all drawings except Drawings 10520473, 10520474,10520622, 10520496, and MS29513-9.Characteristics Defect Method of InspectionCritical1 Firing pin protrusion Gage2 Shear pin not engage
32、d in firing pin Gage3 Striker hole in initiator cap obstructed VisualProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-60286C6Major101 O-ring not lubricated Visual102 Burr Visual103 Foreign matter VisualMinorNone defined4.2.2.3 Assembly, Drawin
33、g 10520619, less all drawings except Drawings 10520407, 10520414, and8597230.Characteristics Defect Method of InspectionCritical1 Cartridge not properly seated Visual2 Filter missing or insecure Visual3 Nylon patch missing or improperly applied VisualMajor101 Burr Visual102 Foreign matter VisualMino
34、rNone defined4.2.2.4 Assembly, Drawing 10520619.Characteristics Defect Method ofInspectionCritical1 Cartridge face not seated against base of firing pin housing Visual/X-ray2 Any part missing Visual/X-ray3 Improper assembly Visual/X-ray4 Marking missing, incorrect, or illegible VisualProvided by IHS
35、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-60286C7Major101 Set screw missing or insecure Visual102 Burr Visual103 Foreign matter VisualMinor201 Thread sealing compound missing from setscrews Visual202 Protective cap or plug missing Visual203 Protective
36、 finish inadequate or defective Visual4.2.3 Inspection testing. The following tests shall be performed in accordance with 4.3. 4.2.3.1 Breakaway torque. Each assembly shall be subjected to the breakaway torque test of thethreaded joint between the cap and the chamber. Failure of any assembly to comp
37、ly with 3.3 shall because for rejection of the assembly. 4.2.3.2 Residual magnetism. Each initiator shall be subjected to the test for excessive residualmagnetism as specified in 4.3.2. Failure of any initiator to comply with 3.4 shall be cause for rejection ofthe initiator. 4.2.3.3 Functional tests
38、. The following tests shall be performed by the Government. 4.2.3.3.1 Ballistics. Twenty-one units shall be tested to determine compliance with 3.6. The units shallbe temperature conditioned as provided in table II and 4.3.3.2. Failure of any unit to comply with 3.6shall be cause for rejection of th
39、e lot. TABLE II. Conditioning temperature.Temperature (bF) Sample Size-60 to -70 765 to 75 7195 to 205 74.2.3.3.2 Retest. There shall be no retests. 4.2.3.3.3 Test failure. If a test failure is attributable to an assignable cause, excluding the test initiator,the original test results shall be disca
40、rded and that test reconducted. 4.3 Test methods and procedures.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-60286C84.3.1 Breakaway torque. The torque wrench set as specified in 3.3 shall be used in conjunction with afixture to determine t
41、he adequacy of the joints. The chamber shall be secured in a suitable vise, and thetorque shall be applied to the cap. 4.3.2 Residual magnetism. The assembly shall be tested for excessive residual magnetism using anapproved compass in an area free of local magnetic effects by placing the assembly 5
42、inches from the endat the same height as the compass, in the north-south horizontal position (cap end at south) with thecompass set in an east-west heading. The assembly shall be moved at a speed no greater than 10 feet perminute past the compass for its entire length, rotated 90 degrees in the hori
43、zontal position about itslongitudinal axis, and moved slowly back past the compass. This procedure shall be repeated for each 90degree rotation of the assembly for four full passes. 4.3.3 Radiographic examination. All assembled initiators shall be radiographically examined inaccordance with ASTM E17
44、42, with the exception that an initiator assembly will be used for thepenetrameter. Any observable imperfections in components or assembly shall be cause for rejection. Theinitiators shall be positioned for the most revealing exposure, with the long axis of each assemblyperpendicular to the rays of
45、the X-ray machine. All initiators shall be identified with serial numbers priorto X-ray examination. The serial numbers shall be in consecutive order beginning with the number 001 ineach production lot. Any missing numbers are to be identified on the X-rays. The initiators shall bearranged on trays
46、or boards in consecutive numerical order, and each radiograph shall carry a permanentidentification of the units displayed thereon. The radiographic plate identification shall include itemnomenclature, the complete lot number, the span of serial numbers displayed, and the contract number.The radiogr
47、aphs of the entire production lot shall accompany the ballistic sample to the activityconducting the production lot acceptance test. Defective initiators found during X-ray review are to bemarked on the X-ray prior to shipment and those defective items shall be removed from the productionlot. Film i
48、nterpretation of the radiographs shall verify the presence and correct positioning of thefollowing parts:a. Pin, Firing, P/N 10520474b. O-ring, MS29513-9 c. Filter, P/N 10520414d. O-ring, P/N 10520496e. Pin, Shear, P/N 10520622f. Shear Pin Setscrewg. Setscrew, Initiator Caph. Cartridge, Impulse, M91
49、, P/N 85972304.3.4 Functional.4.3.4.1 Ballistics. The test sample shall be rigidly supported in the fixture and fired by a sourcedelivering an output of 700 +25, -0 psig at the end of 15 feet of aircraft hose, MS28741-4, at 70 5bF.The sample shall be tested within 5 minutes after removal from the temperature conditioning chamber.When this time limit is exceeded, the sample units shall be reconditioned in accordan
