1、MIL-C-63286 (3) 13 7779706 03i17237 T m / 5-37-0s-. MIL-C-63286 (AR) AMENDMENT 3 11 August 1982 SUPERSEDING AMENDMENT 2 7 October 1981 MILITARY SPECIFICATION CARTRIDGE , 105MM , HEAT-T-MP M456A2 LOADING, ASSELING AND PACKING This amendment forms a part of Military Specification MIL-C-63286 (AR) date
2、d 29 January 1980 and is approved by the US Army Armament Research and Development Command and is available for use by all Departments and Agencies of the Department of Defense. Change M456AlE2 to M456A2 wherever it appears throughout the PAGE 6 specification. Add new paragraph: “3.8.7 Non-conventio
3、nal armor penetration. The round, when fired, shall completely penetrate the target specified in paragraph 4.5.8.5.n PAGE 10 Table I, Phases 5 thru 8: Delete “info only“ and substitute “3.8.7n. Also, under Ref. Paragraph add n4.4.3.5.6n. PAGE 11 4.4.1: Inspection lot formation. Delete “an and substi
4、tute: a. Cargridge cases of not more than three lots used from any group of five consecutive lots of one lot interfix number from one manufacturer.“ Add “i. Cones of one lot interfix from one manfacturer. FSC 1315 THIS DOCUMENT CONTAINS &!- PAGES.- Licensed by Information Handling ServicesMIL-C-6328
5、6 (3) 13 7777906 03W2Llb 9 MIL-C-63286 (AR) AMENDMENT 3 PAGE 12 4.4.2.1: Add these to major category: “102. Runout of cone with bourrelets.O.40%3.l.Gage 103. Length of conduit from rear face0.40%3.lGage 104, Alignment of hole in the cone with the wire slot in the fuze cavity . 0.40%.3.1Visual 105. P
6、resence of adhesive on explosive side of cone.0.40%.3.l.Visual 106. Thread sealing compound miss i ng or improperly applied 0.40%.3.1Visual PAGE 21 * 4.4.2.9: Change all Major and Minor Defects to: “Major 101. Liner installed incorrectly, in that surface exposed is not that which is completely cover
7、ed with film.O.40%3.2.Visual 102. Adhesive missing0.40%3.2Visual 103. Gap between liner and case, excessive.lOO%.3.2visual 104. Depth of liner from mouth of case.O.40%3.2Gage 105. Evidence of contamination in cartridge case prior to liner insertion.lOO%.3.2Visual Minor 201. Ends of cloth overlap.0.6
8、5%3.2Visual 202. Evidence of poor workmanship0.65%.3.11.Visualt1 PAGE 23 *1 I b . * 4.4.2.11: Add Major Defect “107. Electrical resistance between primer electrode and cartridge case.i.lOO%3.24.5.3.411 . 2 n Licensed by Information Handling ServicesflIL-C-632h (3) 113 I 7777706 0347241 m MIL-C-63286
9、 (AR) AMENDMENT 3 PAGE 24 4.4.2.12: Add at the end of Note 1: “An airburst after fuze arming shall be considered as a major defect.“ PAGE 30 Add new paragraph: “4 04 2 18 Cri tical None defined Conduit. Dwg. 8597613 Major 101. Wall thickness, incorrect.3.10.40%Gage 102. Material Defective*.3.12.1.0.
10、40%Visual Minor 201. Diameter inside (at rear), 202. Diameter inside (at front) incorrect3.10.65%Gage incorrect3.lO.65%Gagen PAGE 31 Add new paragraph: “4.4.3.5.6 Non-conventional armor penetration. Twenty rounds Der Dhase shall be selected and fired in accordance with Table I. If six (6) or more sa
11、mple cartridges fail to comply with the applicable requirmement, the first article sample shall be rejected. For information only, the number of duds as well as partials shall be recorded (see 6.8). PAGE 32 4.5.3.1: Delete third sentence and substitute: “The electrical current between the wire and t
12、he spike (ground) shall be 1.0 to 1.2 x 10-3 AMPS at plus and minus 300 - + 5 volts.“ 3 Licensed by Information Handling ServicesI- . MIL-C-63286 (AR) AMENDMENT 3 PAGE 34 4.5.8.1.3: Delete and substitute: The ammunition fired in this phase shall be preconditioned to the temperature of 70* + 2.5% (21
13、.1 + 1.4OC). However, during first article testing the-ammunition fired shall be preconditioned to the temperatures specified in Table II. All propellant shall be stabilized at a uniform temperature prior to firing. This normally requires a period of 24 hours.“ PAGE 35 4.5.8.1.9: Delete first senten
14、ce and substitute: “Wind velocity and gusts shall be measured at the firing site prior to the firing of each round.“ PAGE 37 * 4.5.8.6: Delete first sentence and substitute: “Loaded subassemblies shall be fired statically at 15 revolutions per second (RPS). The loaded subassemblies shall have nose c
15、aps assembled to them and be positioned with the nose cap -25 - -24 inches from the plate.“ Delete third sentence and substitute: “The mild steel blocks should each be 3 inches to 6 inches thick and shall be stacked to a minimum of 21 inches (53.3 CM) for all tests.“ PAGE 38 Add to paragraph 6.9: “A
16、 dud is defined as any partial penetration less than one inch in depth.“ PAGE 39 6.11.2: Delete and substitute: “A first Quarter life (new tube) is defined as a tube with not greater than 0.015 inch (.O38 CM) primary land wear .“ 6.11.3: Delete and substitute: “A mid-life tube is defined as a tube w
17、hich the primary land wear is between .O16 inch (.O40 CM) and .O41 inch (-104 CM) .“ 4 Licensed by Information Handling ServicesMIL-C- 6 3 28 6 AMENDMENT 3 (AR) 6.11.4: Delete and substitute: “A quarter-life (worn tube) is defined as a tube in which the primary land wear is between 0.042 inch (-106
18、CM) and 0.056 inch (142 CM).“ PAGE 42 4.5.8.2: Delete second sentence and substitute: “The target shall be placed 388 feet (118.3 meters) from the gun muzzle at an angle of obliquity of 60 degrees from the vertical.“ Delete third sentence and substitute: “High speed color cameras shall be utilized t
19、o record plate impact on the First Article, as a minimum.“ 4.5.8.5: Delete first sentence and substitute: “This cartridge shall be fired at a non-conventional armor target placed 388 feet (118.3 meters) from the gun at 60 degrees obliquity.“ Add at the end of paragraph: “Distance indicated from plat
20、e to bars is measured from the top face of the plate to the center of the bars.“ 5 Licensed by Information Handling ServicesMIL-C-h32h (3) 13 777770b 0347244 3 MIL-C-63286 (AR) AMENDMENT 3 * The margins of this document are marked with an asterisk to indicate where changes (additions, modifications,
21、 corrections, deletions) from the previous amendment were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notation and relationship to the last previous amendment. Custodian: Army-AR Preparing activity Army-AR -. Project 1315-A515 *U.%. GOVERNMENT PRINTING OFFICE: 1SIP-603-034/230 6 Licensed by Information Handling Services
