1、IINCH-POUND 1 MIL-C-48360 (AR) AMENDMENT5 30 September 1998 SUPERSEDING AMENDMENT4 12 March 1993 MILITARY SPECIFICATION CHARGE, PROPELLING, M200 FOR 105MM HOWITZER, M119 LOADING, ASSEMBLING AND PACKING This Amendment forms a part of Military Specification MIL-C-48360 (AR), dated 3 July, 1980, and is
2、 approved for use by the US Army Research Development and Engineering Center, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 1 Title: Delete “M24” and substitute “M1 19”, and whenever it appears in this specification. PAGE 3 3.4.3: Delete “47,000 PSI and
3、substitute “46,500 PSI”. 3.4.4: Delete in its entirety and substitute new paragraph 3.4.4: “3.4.4 Muzzle velocitv and velocitv standard deviation. The muzzle velocity of 70 degrees F temperature shall not be less than 2052 feet per second nor greater than 2102 feet per second and the standard deviat
4、ion of the lot shall not be greater than 8 feet per second.” Add new paragraph: “3.7 Initiai production test. This specification contains provisions for the submission of an initial production sample. This is a one time qualification test for a new contractor to load, assemble and pack M200 propelli
5、ng charges. Test samples shall be withdrawn from the first lot produced by the contractor. Charges will be tested in accordance with all the requirements of this specification and Table II (see 6.10). Until the initial production sample has been found to be acceptable, the contractor is in no way au
6、thorized by the Government to initiate production of a second lot unless otherwise directed by the contracting officer.” 1 of4 AMSC NIA FSC 1315 DISTRIBUTION STATEMENT A. Approved for public release; Distribution is unlimited. Licensed by Information Handling Services D 999990b 2081052 825 9 MIJ-483
7、60 (AR) AMENDMENT5 PAGE 4 4.2: Add the following: %. Initial Production Inspection (see 6. lo).” PAGE 5 Table I: Delete “Foil, Lead” and “(Dwg 9282047)”; and substitute “Cloth, Lead Laminate wg 12913756)”. 4.4.1: Add the following: “An entire lot of propellant shall be utilized in the formation of o
8、ne lot of propelling charges unless otherwise directed by the Contracting Officer.” 4.4.2.b: Delete “Major and Defects” and substitute “Major and Minor Defects.” PAGE 7 4.4.2.1: Delete Major Defects 102 and 103 in their entirety. PAGE 8 4.4.2.2: Title: Delete Toil Lead” and substitute “Cloth, Lead,
9、Laminate”. Major Defect 101: Delete “Length” and substitute “Established Length”. Major Defect 102: Delete Width” and substitute “Established Width”. PAGE 9 4.4.2.3: Major Defect 103: Delete Zength from edge of lead foil to edge of liner” and substitute “Body seam improperly assembled”. Delete “Gagd
10、Scale” and substitute “visuai”. Major Defect 104: Delete in its entirety. 2 Licensed by Information Handling Services0b 2083053 i63 MIL-C-48360 (AR) AMENDMENT 5 PAGE 10 * 4.4.2.4: Add Critical 1 and Majors 105 and 106 as follows: Category Examination or Test Req. Para. Para Ref. Critical 1 Proving G
11、round Pressure exceeds PIMP 3.4.1 4.5.3 at 145 degrees F Maior 105 Muzzle velocity and muzzle velocity 3.4.4 4.5.3 standard deviation tacking operation 106 Excessive thread used in 100 % Vis WManual Minor Defect 201: Under No. of Sample Units, add “(a)”. Notes: add “(a) Some delamination and tearing
12、 of the lead foil is expected during loading and is not a cause for rejection.” PAGE 15 4.4.3.3.2: Delete paragraph in its entirety and substitute: “4.4.3.3.2 Muzzle velocity and muzzle velocity standard deviation. Determination of acceptance will be in accordance with MIL-STD-414, Section B, Table
13、B3, AQL of 0.65%. Ali muzzle velocity and muzzle velocity standard deviation samples will be ballistic tested at 70 degrees F. Fifteen (15) charges will be fired for muzzle velocity and muzzle velocity standard deviation. If the sample is determined unacceptable the lot will be rejected. In addition
14、, if the velocity standard deviation of the sample multiplied by the factor 0.76 exceeds the applicable lot requirement, the lot shall be rejected. Fifteen (15) calibration charges will be fired alternately with the test samples and the muzzle velocity and pressure of all the test charges will be co
15、rrected to standard conditions.” PAGE 17 4.5.3.2: Delete “The rounds shall be fired in a M205 cannon which has a tube wear of no greater than 0.015 in. (0.381 MM) when measured 25.25 in. (641.3 MM) from the rear of the tube.” and substitute The rounds shall be fired in a L20A1 tube which has a tube
16、wear of no less than 50 9% life remaining.” 5.2 he 1: Delete Twenty four (24)” and substitute Twenty eight (28)”. 3 Licensed by Information Handling Services999970b 2083054 bT8 MIL-C-48360 (AR) AMENDMENT5 PAGE 18 6.7: Delete “47,000 psi” and substitute “46,500 psi”. Delete 2170 to 2220 fps” and subs
17、titute 2052 to 2102 fps”. PAGE 19 Add new paragraph: “6.10 Initial Droduction test. The initial production test is a one time qualification test for a new contractor to load assemble and pack acceptable WOO propelling charges. Once a contractor has demonstrated the ability to load, assemble and pack
18、 the propelling charges, the initiai production test may be waived by the contracting officer. The following test program shaii be used for the initial production test. Table II Initiai Production Test Temp No. Control No. Test Test Phase (Des F) Rounds Rounds TECOM TOP Propellant checkout 70 10 TOP
19、-4-2- 504 145 10 TOP-4-2-504 -60 10 TOP-4-2-504 Sequential Environmental 145 15 60 TOP-4-2-504 -60 15 60 TOP-4-2-504 NOTE: The margins of this amendment are marked with an asterisk or vertical line to indicate where changes (additions, modifications, corrections, deletions) ffom the previous were ma
20、de. 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 notations and relationship to the last previous amendment. Custodian: Army-AR Preparing Activity: Army-AR Project: 1315-0129 4 Licensed by Information Handling Services
