1、MIL-C-bOb43A 13 9999906 0575778 7 W INCH-POUND MIL-C-60643A 23 June 1992 SUPERSEDING 10 June 1968 MIL-C-60643(MU) MILITARY SPECIFICATION CARTRIDGE, IMPULSE, M127 ASSEMBLY mis specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This spec
2、ification covers the requirements for the M127 Impulse Cartridge (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the is
3、sues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplements thereto, cited in the solicitation (see 6.2). SPECIFICATIONS MILITARY MIL-A-2550 Ammunition, General Specification For MIL-A-8625 Anodic Coatings, For Alu
4、minum And Aluminum Alloy AMSC N/A FSC 1377 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Beneficial comments (recommendations, additions, deletions) and any pertinent however, one primary component production lot may be used in more than one cartridge production l
5、ot. 3.4.1.1 Primer. The primer shall conform to the applicable drawing and reference specification. Prior to assembly into a cartridge, the primer shall be visually examined in accordance with 4.6.2 and radiographically examined for defects as specified in 4.7.1. 3.4.2 Hardness. The hardness of each
6、 component part shall be in accordance with the applicable drawing (see 4.7.2). 3.4.3 Protective finish. The finish of each component part shall be in accordance with MIL-A-8625 and the applicable drawing (see 4.7.3). 3.5 Assembly. 3.5.1 Radiographic examination. Each cartridge assembly shall be rad
7、iographically examined for defects (see 4.7.4). 3.5.2 Airtightness. Each assembled cartridge shall exhibit no air leakage greater than 1 x lo4 standard cubic centimeters of air per second at a 14 psia pressure differential (see 4.7.5). 3.5.3 Vibration. The assembled cartridge shall withstand vibrati
8、on as prescribed in MIL-STD-8 10, Method 514.3, Test Procedure I, Test Condition 1-3.2.5 without evidence of any disintegration of the primer, propellant, or igniter, or derangement of any component (see 4.7.7 and 6.2). 3 Licensed by Information Handling ServicesMIL-C-bOb43A 13 = 99999Ob 0575783 7 M
9、IL-C-60643A Temperature (OF) - 60 to - 70 3.6 Functional requirements. 3.6.1 Primer sensitivity. The primer shall fire when drop tested at an energy level of 60 inch-ounces in a sectioned cartridge void of igniter and propellant charge (see 4.7.8.1). 3.6.2 Cartridge performance. 3.6.2.1 Misfires. Th
10、e cartridge shall not fail to fire. 3.6.2.2 Ballistics. The cartridge, when tested in closed bomb, Drawing 5185086, shall comply with the requirements of table I. TABLE I. Ballistic requirements. Maximum pressure (psig) Igition Delay Time, Time to P-max, Lower Upper max (ms) max (ms) 3285 none 65 11
11、8 65 to 75 195 to 205 3285 none 65 118 3285 none 65 118 3.7 Workmanship. Cartridges shall be free of cracks, splits, or other defects which might prevent proper mating with connecting parts or proper functioning of the device. 3.7.1 Metal defects. All components shall be free from cracks, splits, co
12、ld shuts, inclusions, porosity, or any similar defect. 3.7.2 Burr. No part shall have a burr which might interfere with the assembly or function of the item or which might be injurious to personnel handling the item. 3.7.3 Foreign matter. No part or assembly shall contain chips, dirt, grease, rust,
13、corrosion, or other foreign matter. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except a
14、s otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set
15、forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements (see 6.2). 4 Licensed by Information Handling ServicesMIL-C-bOb43A 13 = 99999Ob 0575782 9 MIL-C-60643A 4.1.1 Responsibility for compliance. All items shall meet
16、ail requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring
17、 that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements; however, this does not authorize submission of known d
18、efective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. 4.1.2 Quality assurance terms and definitions. Reference shall be made to MIL-STD-109 to define the quality assurance terms used. 4.1.3 Inspections. Inspections shall be in accordanc
19、e with MIL-A-2550 and MIL-STD-453. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.4) b. Quality conformance inspection (see 4.5) 4.3 Inspection conditions. Unless otherwise specified in the contract or pur
20、chase order (see 6.2), inspection conditions shall be as follows: e a. Temperature: Room ambient 20“ to 25“ C (68“ to 77“ F) b. Altitude: Sea level c. Humidity: 50 percent relative, maximum d. Atmospheric: 14.7 psia 4.4 First article inspection. At the beginning of regular production, the contractor
21、 shall submit a first article sample to a Government approved facility for evaluation. The sample shall consist of 21 assembled cartridges for ballistics testing including 12 for vibration tests (to be selected from ballistic samples), 5 assembled cartridges for sealant tests, 10 sets of unassembled
22、 components for dimensional and visual examination, and a quantity in accordance with 4.4.2, Le., cartridges assembled without the igniter and propellant charge for primer sensitivity test. The first article sample shall be manufactured using the same materials, equipment, processes, and procedures
23、as used in regular production. All parts and materiais, including packaging and packing, shall be the same as used for regular production and shall be obtained from the same source of supply. When it becomes necessary to make a change in either the primer, propellant, or igniter lot after initial pr
24、oduction, 12 assembled cartridges from the first production lot thereafter shall be tested in accordance with 4.7.7. The Government reserves the right to require new first article samples until such time as an acceptable sample is submitted (see 6.3). 4.4.1 Examination, tests, and facility. After pr
25、ovisional acceptance at source, the sample shall be inspected for all requirements of the drawings and specifications at a Government laboratory or other such facility specified in the contract (see 6.2). 5 Licensed by Information Handling ServicesMIL-C-bOb43A 13 9999906 057.5783 O 301 to 500 501 to
26、 800 801 to 1300 Over 1300 MIL-C-60643A 30 35 40 50 4.4.2 Sample size for primer sensitivity. The number of cartridges assembled without igniter or propellant to be submitted for primer sensitivity tests shall be in accordance with table II. Temperature (O F) -60 to -70 TABLE II. Primer sensitivitv.
27、 Not vibrated Vibrated 3 4 66to 110 111 to 180 181 to 300 4.4.3 Temperature conditioning for ballistic test. The sample shall be temperature conditioned and tested to determine compliance with 3.6.2.2. The sample for firing shall be conditioned to table III. TABLE III. TemPerature conditioning. II 6
28、5 to 75 I 3 I 4 II II 195 to 205 I 3 I 4 II 4.4.4 First article failure. Failure of the sample to comply with the requirements of the drawings and specifications shall result in first article sample disapproval. 4.5 Quality conformance inspection. 4.5.1 Lot. 4.5.1.1 Submission of product. The produc
29、t shall be submitted in accordance with MIL-STD-105. 6 Licensed by Information Handling Servicesc MIL-C-bOb43A 13 = 9999906 0575784 2 H MIL-C-60643A 4.5.1.2 Lot size. The production lot size shall be as specified in the contract (see 6.2). 4.5.2 Examination and tests. The quality conformance sample
30、shall be subjected to the O examinations of 4.6 and all the test procedures of 4.7 except for 4.7.7. 4.6 Examination. All cartridges and components shall be examined visually and radiographically and characteristics defined in accordance with the applicable drawings. One hundred percent examination
31、shall be performed for all critical defects. Examination for major or minor defects shall be performed on a defect basis in accordance with the classification of defects. Inspection for elastomeric O-rings shall be in accordance with MIL-STD-413. Four power (4X) magnification may be used in performi
32、ng visual examination for such defects as burrs and foreign matter. When compliance is in doubt as a result of visual inspection, the characteristic shall be measured or gaged to determine acceptability. All nonconforming items shall be rejected. 4.6.1 Cartridge, Impulse, M127 Assembly, Drawing 1052
33、0589. Characteristic Defect Critical 1 2 3 4 5 Major 101 102 103 104 105 Minor 20 1 202 203 204 205 Any part missing Improper assembly Primer not properly seated Metal defective Marking missing, incorrect, or illegible Concentricity of head with body Crimp missing or improper Sealant missing Sealant
34、 in cavity Foreign matter present Diameter, max Diameter of head, max Total length, max Location of datum diameter Varnish missing or inadequate Method of Inspection X-ray/Visual X-ray/Visual X-ray/Visual Visual Visual Gage Visual Visual Visual Visual Gage Gage Gage Gage Visual 7 Licensed by Informa
35、tion Handling ServicesflIL-C-bOb43A 13 = 99999Ob 0575785 4 MIL-(2-60643 A 4.6.2 Primer, Percussion, Drawing 10551688, covering a detail of 10520589. Critical 1 Improper assembly Visual/X-ray 2 Any part missing VisuallX-ray 3 Primer pellet broken, cracked, or dislodged Visual 4 Metal defective Visual
36、 5 Primer foil discolored Visual 6 Mixed primers Visual Major 101 Burr Visual 102 Foreign matter present Visual 4.6.3 Case, Cartridge, Drawing 10521233 , covering a detail of Drawing 10520589. Critical 1 Major 101 102 103 104 1 o5 106 107 108 109 Minor 20 1 202 203 204 205 206 207 Metal defective Co
37、ncentricity of large diameter with small diameter Diameter of head, min Thickness of base, min Diameter of body, min Thickness of sidewall, min Straightness of base Protective finish inadequate or defective Foreign matter present Burr or sharp corner Small diameter, max Large diameter, max Total len
38、gth Location of datum diameter Thickness of sidewall, max Radius or chamfer missing or incorrect, except as otherwise Surface finish improper classified Visual Gage Gage Gage Gage Gage Gage Visual Visual Visual Gage Gage Gage Gage Gage Visual Visual 8 Licensed by Information Handling ServicesMIL-C-b
39、Ob43A 13 99999Ob 057578b b MIL-C-60643A 4.6.4 Head, Cartridge, Drawing 10521232, covering a detail of Drawing 10520589. Critical 1 Major 101 102 103 104 105 106 107 108 1 o9 110 111 112 113 114 Minor 20 1 202 203 204 205 206 207 208 209 210 21 1 Metal defective Concentricity of primer pocket recess
40、with primer pocket Concentricity of counterbore, large end, with primer pocket Concentricity flange with primer pocket Concentricity body, small end, with primer pocket Diameter of flange, minimum Diameter of primer pocket recess, maximum Diameter of primer pocket Thickness of metal at base of prime
41、r pocket recess Depth to base of large counterbore, large end Depth of primer pocket Protective finish inadequate or defective Surface finish of primer pocket Burr Foreign matter Diameter of flange, maximum Diameter across taper, large end, at specified location Diameter of large counterbore Diamete
42、r of primer pocket recess, minimum Diameter of body Depth of taper on flange Total length Length of taper on flange Location of datum diameter Radius or chamfer missing or incorrect Surface finish improper, except as otherwise specified 4.6.5 Box, Fiberboard (nner), Ammunition, Packing, Drawing 8845
43、187. Critical None defined Major None defined Visual Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Visual Visual Visual Visual Gage Gage Gage Gage Gage Gage Gage Gage Gage Visual Visual 9 Licensed by Information Handling ServicesMIL-C-bOb43A 13 = 999990b 0575787 8 = MIL -C -60643 A Minor 20 1 Co
44、ntents loose 202 Separator or filler missing 203 204 205 Heat sealer incomplete, loose, or distorted Cut or damaged through impregnated box Marking missing, incorrect, or illegible 4.6.6 Box, Ammunition, Packing, Drawing 8845186. Critical None defined Major None defined Minor 20 1 Contents loose 202
45、 203 Contents of box exposed 204 Box damaged 205 206 Number of cartons incorrect Strapping missing, loose, broken, or improperly assembled Marking missing, incorrect, or illegible 4.6.7 Box, Fiberboard (Outer), Alternative, Drawing 9225904. Critical None defined Major None defined Minor 20 1 Content
46、s loose 202 Box broken or damaged 203 204 205 Tape incomplete Number of units contained incorrect Marking missing, incorrect, or illegible 4.7 Test methods and procedures. ManuaWisual Visual visual Visual visual Manual/Visual Visual Visual Visual Visual Visual Manual Visual Visual Visual Visual 4.7.
47、1 Primer x-ray. Prior to assembly into the cartridge, the primer shall be radiographically examined in accordance with MIL-STD-453. Each primer shall be x-rayed on boards or trays with the cup side perpendicular to the rays. The x-ray negatives shall be identified by item nomenclature and by lot num
48、ber. Primers are to be left mounted to the boards or trays until after the x-rays have been reviewed and defects identified to facilitate removal of defective units. After screening, the x-ray 10 Licensed by Information Handling Services. MIL-C-bOb43A 13 999990b 0575788 T MIL-C-60643A negatives with
49、 defectives identified, shall be forwarded to the engineering activity designated by the acquiring activity. Interpretation of the radiographic films shall verify the following: a Presence of Primer Charge No Material Defects 4.7.2 Hardness. Ten units from each heat-treated lot of components shall be tested with a hardness tester. Failure of any unit to comply with the requirements of the drawings shall be cause for rejection of the lot of components. 4.7.3 Protective finish. Procedures for the determination of acceptability of coated parts shall be in accordance with the contract and MIL-A-
