1、 INCH-POUND MIL-DTL-46618C (OS) 01 March 2011 SUPERSEDING MIL-C-46618B 20 May 1990 DETAIL SPECIFICATION CARTRIDGE IMPULSE, M73 ASSEMBLY This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all departments and agencies of the Dep
2、artment of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for the M73 Impulse Cartridge (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents ci
3、ted in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3, 4, or 5 of this s
4、pecification, whether or not they are listed 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are tho
5、se cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-A-2550 Ammunition, General Specification for MIL-A-8625 Anodic Coatings for Aluminum and Aluminum Alloys Comments, suggestions, or questions on this document should be addressed to DEPARTMENT OF THE NAVY, Indian Head
6、Division, NSWC, E12AP, Document Control, 4123 Artisans Court, Suite 103, Indian Head, MD 20640-5085 OFFICIAL BUSINESS, or emailed to amanda.pennnavy.mil. Since contact information can change, you may want to verify the currency of this information using the ASSIST Online database at https:/assist.da
7、ps.dla.mil. AMSC N/A FSC 1377 Distribution Statement A: Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46618C (OS) 2 DEPARTMENT OF DEFENSE STANDARDS MIL-STD-810 Environmental Engineerin
8、g Considerations and Laboratory Tests (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publication
9、s. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation or contract. DRAWINGS NAVAL SEA SYSTEMS COMMAND (CAGE Code 53711) 5184857 Closed Bomb Assemb
10、ly, M73 NAVAL ORDNANCE STATION (CAGE Code 19200 and 19203) DL8594157 Cartridge, Impulse, M73 Assembly 8797373 Box, Fiberboard (Inner), Packing, Ammunition, For Cartridge, Impulse M44A1 or M73 8797441 Box, Packing, Ammunition, For Cartridge, Impulse M44A1 or M73 9225380 Box, Fiberboard (Outer), Alter
11、native Packing Ammunition, For Cartridge, Impulse M44A1 or M73 (Application for copies should be addressed to the DEPARTMENT OF THE NAVY, Indian Head Division, NSWC, Code E12P, Document Control, 4123 Artisans Court, Suite 103, Indian Head, Maryland 20640-5085, OFFICIAL BUSINESS.) 2.3 Non-Government
12、publications and drawings. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN NATIONAL STANDARD INSTITUTE (ANSI)/AMERICAN SOCIETY FOR QUALITY (ASQ) AN
13、SI/ASQ Z1.4 Sampling Procedures and Tables for Inspection by Attributes ANSI/ASQ Q9000 Quality management systems - Fundamentals and vocabulary (Copies of these documents are available online at http:/webstore.ansi.org/ansidocstore/default.asp, or from the American Society for Quality, PO Box 3005,
14、600 N. Plankinton Ave., Milwaukee, WI 53203) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM E 1742/E 1742M Standard Practice for Radiographic Examination Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46618C (OS) 3 (Copies of this do
15、cument are available online at http:/www.astm.org or from the American Society for Testing and Materials Customer Service, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text
16、of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase ord
17、er, a first article sample shall be subjected to first article inspection (see 4.4, 6.2, and 6.3). 3.2 Conformance to documents. The M73 Impulse Cartridge covered by this specification shall be manufactured in accordance with DL8594157 and all documents listed thereon. 3.3 Materials. All materials u
18、sed in the manufacture of the cartridges shall conform strictly to the specifications referred to on the respective drawings unless specific approval in writing covering a departure there from has been obtained from the cognizant Navy design activity prior to manufacture. When alternate materials or
19、 methods of manufacture are specified on the drawings, the bidders selections shall be clearly stated in the proposal. 3.4 Components. 3.4.1 Primary components. For the purpose of this specification, the Ignition Device, igniter charge, and the cartridge propellant charge are considered primary comp
20、onents. Only primary components from a single lot shall be used in a production lot of cartridges; however, one primary component production lot may be used in more than one cartridge production lot. 3.4.1.1 Ignition Device. The Ignition Device shall conform to the applicable drawing and reference s
21、pecification except that the sensitivity of the Ignition Device shall comply with the requirements of 3.4.1.2. Only percussion Ignition Devices from lots manufactured within the last 24 months or recertified within the last 12 months shall be used in these units. Prior to assembly into a cartridge,
22、the Ignition Device shall be visually examined in accordance with 4.6.2 and radiographically examined for defects as specified in 4.7.1. 3.4.1.2 Ignition Device sensitivity of Ignition Device lot. Prior to assembly into a cartridge, the Ignition Device sensitivity of the Ignition Device lot shall be
23、 such that the average critical height (H) plus five standard deviations (5s) shall not exceed 15 inches. The average critical height minus two standard deviations shall not be less than 2-1/2 inches. 3.4.2 Hardness. The hardness of each component part shall be in accordance with the applicable draw
24、ing (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. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46618C (OS) 4 3.5.1 Radio
25、graphic examination. Each cartridge assembly shall be radiographically examined for defects (see 4.7.4). 3.5.2 Air tightness. Each assembled cartridge shall exhibit no air leakage greater than 1 x 10-4standard cubic centimeters per second (see 4.7.5) at a 14.7 psia pressure differential. 3.5.3 Vibra
26、tion. The assembled cartridge shall withstand vibration as prescribed in MIL-STD-810, Method 514.3, Test Procedure I, Test Condition 1-3.2.5 without evidence of any disintegration of the Ignition Device, propellant, or igniter, or derangement of any component (see 4.7.6 and 6.2). 3.6 Functional requ
27、irements. 3.6.1 Ignition Device sensitivity. The Ignition Device shall fire when drop tested at an energy level of 59 inch-ounces in a sectioned cartridge void of igniter and propellant charge (see 4.7.7.1). 3.6.2 Cartridge performance. 3.6.2.1 Misfires. The cartridge shall not fail to fire. 3.6.2.2
28、 Ballistics. The cartridge, when tested in a closed bomb (Drawing 5184857), shall produce the pressures and ignition delay at temperatures specified in table I (see 4.7.7.2, 6.6.1, and 6.6.2). TABLE I. Ballistic requirements. Temperature (F) Ignition delay time, max (ms) Maximum pressure (psig) Time
29、 to Pmax (ms)Lower Upper -60 to -70 20 2400 3400 40 65 to 75 20 2400 3400 40 195 to 205 20 2400 3400 40 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
30、components shall be free from cracks, splits, cold 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 as
31、sembly shall contain chips, dirt, grease, rust, corrosion, or other foreign matter. 4. VERIFICATION 4.1 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) 4.2 Quality
32、 assurance terms and definitions. Reference shall be made to ANSI/ASQ Q9000 to define the quality assurance terms used. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46618C (OS) 5 4.2.1 Inspections. Inspections shall be in accordance with M
33、IL-A-2550 and ASTM E 1742/E 1742M. 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 percent relative, maximum d. At
34、mospheric: 14.7 psia 4.4 First article inspection. At the beginning of regular production, the supplier 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, 5
35、 assembled cartridges for sealant tests, 10 sets of unassembled components for dimensional and visual examination, and a quantity in accordance with 4.4.2, i.e., cartridges assembled without the igniter and propellant charge for Ignition Device sensitivity test. The first article sample shall be man
36、ufactured 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 the same source of supply. When it becomes necessary to make a
37、 change in either the Ignition Device, propellant, or igniter lot after initial production, 12 assembled cartridges from the first production lot thereafter shall be tested in accordance with 4.7.6. The Government reserves the right to require new first article samples until such time as an acceptab
38、le 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 in the contract (see 6.2). 4.4.2 Sample
39、size for Ignition Device sensitivity. The number of cartridges assembled without igniter or propellant to be submitted for Ignition Device sensitivity tests shall be in accordance with table II. TABLE II. Ignition Device sensitivity. Lot Size Sample Size3 to 15 3 16 to 25 4 26 to 40 5 41 to 65 7 66
40、to 110 10 111 to 180 15 181 to 300 25 301 to 500 30 501 to 800 35 801 to 1300 40 Over 1300 50 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. Provi
41、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46618C (OS) 6 TABLE III. Temperature conditioning. Temperature (F) Not vibrated Vibrated-60 to -70 3 4 65 to 75 3 4 195 to 205 3 4 4.4.4 First article failure, Failure of the sample to comply with th
42、e 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 product shall be submitted in accordance with ANSI/ASQ Z1.4. 4.5.1.2 Lot size. Unless otherwise specified (see 6.2), t
43、he production lot size shall be not more than 1200 cartridges maximum. 4.5.2 Examination and tests. The quality conformance sample shall be subjected to the examinations of 4.6 and all the test procedures of 4.7 except for 4.7.6. 4.6 Examination. All cartridges and components shall be examined visua
44、lly 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 or minor defects shall be performed on a defect basis in accordance with the classification of defects.
45、Four power (4X) magnification may be used in performing 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 gauged to determine acceptability. All nonconforming items shall be rejected.
46、 4.6.1 Cartridge, Impulse, M73 Assembly, Drawing 859157 Characteristic Defect Method of Inspection Critical 1 Any part missing X-ray/Visual 2 Improper assembly X-ray/Visual 3 Mixed ammunition Visual 4 Metal Defective Visual 5 Marking missing, incorrect or illegible Visual Major 101 Cartridge profile
47、 failure Gage 102 Diameter of head, max Gage 103 Diameter of body, max Gage 104 Length of datum diameter, max Gage 105 Protective finish inadequate or defective Visual 106 Ignition Device crimp missing Visual 107 Foreign matter present Visual 108 Burr Visual Provided by IHSNot for ResaleNo reproduct
48、ion or networking permitted without license from IHS-,-,-MIL-DTL-46618C (OS) 7 Minor 201 Total length, max Gage 202 Dent Visual 203 Draw scratch Visual 204 Fold, wrinkle, buckle, or bulge Visual 205 Varnish inadequate or missing Visual 206 Surface Finish improper Visual 4.6.2 Ignition Device, Percus
49、sion, Drawing 851AS500, covering a detail of Drawing 8594157. Characteristic Defect Method of Inspection Critical 1 Improper assembly Visual/X-ray 2 Any part missing Visual/X-ray 3 Ignition Device pellet broken, cracked or dislodged Visual 4 Metal defective Visual 5 Ignition Device sealing paper discolored Visual Major 101 Burr Visual 102 Foreign matter present Visual 103 Mixed Ignition Devices Visual 4.6.3
