1、MIL-C-Yh274C 13 W 9999906 057570.5 2 W I INCH-POUND I MIL-C-46274C 23 June 1992 SUPERSEDING MIL4274B(MU) 7 December 1971 MILITARY SPECIFICATION CARTRIDGE, IMPULSE, M94 ASSEMBLY mis specijcation is approved for use by all Departments and Agencies of LE Department of Defense. 1. SCOPE 1.1 Scope. This
2、specification covers the requirements for the M94 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, th
3、e issues 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
4、 Aluminum And Aluminum Alloy Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be adressed to: Commander, Indian Head Division, Naval Surface Warfare Center, Standardization Branch (Code 0343), 101 Strauss Avenue,
5、 Indian Head, MD 20640-5035, by using the Standardization Document Improvement Proposal D Form 1426) appearing at the end of this document or by sending a letter. ,AMSC NIA DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. FSC 1377 Provided by IHSNot for ResaleNo repr
6、oduction or networking permitted without license from IHS-,-,-MIL-C-46274C 13 = 9997906 0575706 4 MIL-C-46274C STANDARDS MILITARY MIL-STD-105 Sampling Procedures And Tables For Inspection By Attributes MIL-STD-109 Quality Assurance Terms And Definitions MIL-STD-4 13 Visual Inspection Guide For Elast
7、omeric O-Rings MIL-STD-453 Inspection, Radiographic MIL-STD-8 10 Environmental Test Methods however, one primary component production lot may be used in more than one cartridge production lot. 3.4.1.1 Primer. The primer shall conform to the applicable drawing and reference specification. Prior to as
8、sembly 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 component part shall be in accordance with the applicable drawing (see 4.7.2). 3.4.3 Protective finish. The fi
9、nish 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 radiographically examined for defects (see 4.7.4). 3.5.2 Airtightness. Each assembled cartridge shall exhibit no a
10、ir leakage greater than 1 x 10-4 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 vibration as prescribed in MIL-STD-8 10, Method 514.3, Test Procedure I, Test Condition 1-3.2.5 without evidence of a
11、ny disintegration of the primer, propellant, or igniter, or derangement of any component (see 4.7.7 and 6.2). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-46274C 13 9999906 0575708 8 n MIL-C-46274C 3.6 Functional requirements. 3.6.1 Primer
12、 sensitivity. The primer shall fire when drop tested at an energy level of 120 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. The cartridge shall not fail to fire. 3.6.2.2 Ballistics. The cartridge, when assemb
13、led into an acceptable M15 Thruster and fired at - 60“ to - 70“F, 65“ to 75“F, and 195“ to 205“F, shall produce a thrust sufficient to propel an 11- pound mass along a horizontal plane, shearing a shear pin with a shear value of 3750 pounds, simultaneously overcoming a 2250-pound resistive load from
14、 zero inches stroke to a minimum of 4.42 inch stroke. Time from initiation of cartridge to completion of stroke shall be not less than 200 milliseconds or more than 750 milliseconds. 3.6.2.3 Initiation. The thruster shall be fired by a source delivering an output pressure f 700 + 25, - O pounds per
15、sqaure inch gage (psig) at the end of 15 feet of aircraft hose, MS28741-4, at 70“ however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. 4.1.2 Quality assurance terms and definitions.
16、 Reference shall be made to MIL-STD-109 to define the quality assurance terms used. 4.1.3 Inspections. Inspections shall be in accordance 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 inspe
17、ction (see 4.4) b. Quality conformance inspection (see 4.5) 4.3 Inspection conditions. Unless otherwise specified in the contract or purchase order (see 6.2), inspection conditions shall be as follows: a. Temperature: Room ambient 20“ to 25“ C (68“ to 77“ F) b. Altitude: Sea level c. Humidity: 50 pe
18、rcent relative, maximum d. Atmospheric: 14.7 psia 4.4 First article inspection. At the beginning of regular production, the contractor shall submit a first article sample to a Government approved facility for evaluation. The sample shall consist of 21 assembled cartridges for ballistics testing incl
19、uding 12 for vibration tests (to be selected from ballistic samples), 5 assembled cartridges for sealant tests, 10 sets of unassembled 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 p
20、rimer sensitivity test. The first article sample shall be manufactured using the same materials, equipment, processes, and procedures as used in regular production. All parts and materials, including packaging and packing, shall be the same as used for regular production and shall be obtained from t
21、he same source of supply. When it becomes necessary to make a change in either the primer, propellant, or igniter lot after initial production, 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
22、first article samples until an acceptable sample is submitted (see 6.3). 4.4.1 Examination, tests, and facility. After provisional 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 i
23、n the contract (see 6.2). 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 I. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
24、e from IHS-,-,-MIL-C-46274C 13 m 9997706 0575730 b m Lot Size 3 to 15 MIL-C-46274C Sample Size 3 TABLE I. Primer sensitivitv. 1. il 181 to 300 301 to 500 25 30 16 to 25 801 to 1300 Over 1300 4 40 50 II Temperature (OF) Not vibrated -60 to -70 3 5 II Vibrated 4 II 41 to 65 7 II 66to 110 51 111 to 180
25、 II 501 to 800 I 35 II 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 II. 4.4.4 First article failure. Failure of the sample to comply with the require
26、ments 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 product shall be submitted in accordance with MIL-STD-105. 4.5.1.2 Lot size. The production lot size shall be as specified in t
27、he contract (see 6.2). 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-r MIL-C-46274C 13 9999906 05757LL 8 M MIL-C-46274C 4.5.2 Examination and tests. The quality conformance sample shall be subjected to the examinations of 4.6 and all the test pro
28、cedures 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 shall be performed for all critical defects. Examination for major o
29、r 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 performing visual examination for such defects as burrs and foreign matter.
30、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, M94 Assembly, Drawing 8596708. Characteristic Defect Method of Inspection Critical 1 2 3 4 5 Ma
31、jor 101 102 103 104 105 106 Minor 20 1 202 203 204 205 206 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 in cavity Foreign matter present O-ring
32、split, creaked, or cut Diameter of body, max Diameter of head, max Total length, max Location of datum diameter Varnish missing or inadequate Fold, wrinkle or bulge X-ray/Visual X-ray /Visual X-ray/Visual Visual Visual Gage Visual Visual Visual Visual Visual Gage Gage Gage Gage Visual Visual 4.6.2 P
33、rimer, Percussion, Drawing 10551686, covering a detail of 8596708. Cri t i cal 1 Improper assembly Visual/X-ray 2 Any part missing Visual/X-ray 3 Primer pellet broken, cracked, or dislodged Visual 4 Metal defective Visual 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without
34、 license from IHS-,-,-MIL-C-46274C 13 = 999990b 0575732 T M MIL-C-46274C 5 Primer foil discolored 6 Mixed primers Major 101 Burr 102 Foreign matter present Visual Visual Visual Visual 4.6.3 Case, Cartridge, Drawing 8593736, covering a detail of Drawing 8596708. Critical None defined Major 101 102 10
35、3 104 105 106 107 108 109 Minor 20 1 202 203 204 205 206 207 Concentricity 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
36、 sharp corner Gage Gage Gage Gage Gage Gage Visual Visual Visual Small diameter, max Gage Large diameter, max Gage Total length Gage Location of datum diameter Gage Thickness of sidewall, max Gage Radius or chamfer missing or incorrect, except as otherwise Visual Surface finish improper Visual class
37、ified 4.6.4 Sealing Disc, Drawing 8593494, covering a detail of Drawing 8596708. Critical None defined Major 10 1 Diameter, min 102 103 Metal defective 1 04 105 Burr 106 Foreign matter present Marking missing, incorrect, or illegible Protective finish inadequate or defective 8 Gage Visual Visual Vis
38、ual Visual Visual Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-46274C 13 9999906 0575713 I Minor 20 1 Diameter, max 202 Thickness 203 Varnish missing MIL-C-46274C Gage Gage Visual 4.6.5 Head, Cartridge, Drawing 11731601, covering a detail of
39、 Drawing 8596708. 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 1 212 213 2 14 2 15 216 Thickness of metallic web between flash hole and igniter cavity Concentricity of flange with body Concentricity of counterbore with
40、firing pin plug cavity Concentricity of firing pin cavity with body Concentricity of firing plug cavity with primer percussion cavity Diameter of counterbore at flange end, max Wall thickness, min Surface finish firing plug cavity primer percussion cavity, and face of flange Diameter of firing plug
41、cavity Diameter of percussion primer small cavity Diameter of percussion primer large cavity Metal defective Protective finish inadequate or defective Burr Foreign matter Diameter of counterbore at flange end, min Total diameter Depth of counterbore at flange end Depth from flange face to bottom of
42、firing plug cavity Depth from flange face to bottom of larger percussion primer cavity Diameter of body Diameter at rear Width of undercut, rear of percussion primer small cavity Depth from rear face to bottom of igniter cavity Width of undercut, rear of igniter cavity Depth from rear face to start
43、of igniter cavity Width of spring retaining cavity Width of flange Diameter of spring retaining cavity Chamfers and radius missing or incorrect Surface finish improper except as otherwise specified Gage Gage Gage Gage Gage Gage Gage Visual Gage Gage Gage Visual Visual Visual Visual Gage Gage Gage Ga
44、ge Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Visual Visual 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-4627YC 13 = 999990b 0575714 3 MIL-C-46274C 4.6.6 Plug, Firing, Drawing 8593498, covering a detail of Drawing 8596708. Critical
45、1 Major 101 102 103 104 105 106 Minor 20 1 202 203 204 205 Length of striker tip, min Diameter of body, min Profile of striker tip Height of boss Metal defective Burr Foreign matter present Diameter of body, max Diameter of boss Total length Length of striker tip, max Surface finish improper Gage Ga
46、ge Gage Gage Visual Visual Visual Gage Gage Gage Gage Visual 4.6.7 Ring, Retaining, Drawing 8593499, covering a detail of Drawing 8596708. Critical None defined Major 101 Concentricity of inside diameter with outside diameter Gage 102 Outside diameter, min Gage 103 Inside diameter, max Gage 104 Meta
47、l defective Visual 105 Protective finish inadequate or defective Visual Visuai 106 Burr Minor 20 1 Outside diameter, max 202 Inside diameter, min 203 Thickness 204 Foreign matter present Gage Gage Gage Visual 4.6.8 Tgniting Disc, Drawing 8593355, covering a detail of Drawing 8596708. Critical None d
48、efined 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-Yb27YC 13 I 99999Ob 0575735 5 Major 101 102 103 104 105 Minor 20 1 202 MIL-CQ6274C Diameter, min Metal defective Protective finish inadequate or defective Burr Foreign matter present Dia
49、meter, max Thickness Gage Visual Visual Visual Visual Gage Gage 4.6.9 Retaining Spring, Drawing 8593742, covering a detail of Drawing 8596708. Critical None defined Major 101 Thickness of wire, min 102 Metal defective 103 104 Burr 105 Foreign matter present Protective finish inadequate or defective Gage Visual Visual Visual Visual Minor 20 1 Diameter, free Gage 202 Thickness of wire, max Gage 203 Gage Gap, min, when spring
