1、 - MIL-W-48272 (LO) 13 m 9999906 O338282 9 m s - 37-07 MIL-W-48272 (AR) Amendment 10 2m BEE 1987 SUPERSEDING Amendment 9 4 August 1981 MILITARY SPECIFICATION WARHEAD SECTION, GM, HE: M251, M251A1 AND M251 (MOD) WITH LIVE FLSC AND INERT BOMBS, DUMMY LOADING, ASSEMBLING AND PACKING This Amendment form
2、s a part of MIlitary Specification MIL-W-48272(AR), dated 26 November 1973, and approved for use within the US Army Armament Munitions and Chemical Command and is available for use by all Departments and Agencies of the Department of Defense. PAGE 1 Tiltle - change warhead section number to read: “(
3、M251), M251A1“ 1.1, Delete in its entirety and replace with the following: 1.1 This specification covers the loading, assembling and packing for three types of warhead sections designated as Warhead Sections, GM HE: M251, M251A1 and M251 (Modified) with Live FLSC and Inert Loaded Bombs, Dummy“. 2.1,
4、 Specifications, Military - Add the following: “DOD-D-OOO -Drawing, Engineering and Associated List“ Lowerright corner, change FSC from “1340“ to “1336“. PAGE 2 2.1, Standards, Military - Add the following: “DOD-STD-100 -Engineering Drawing Practices MIL-STD-1167 -Ammunition Data Card“ 1 of 13 FSC 1
5、336 AMSC N/A DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-48272 (LO) 13 7777906 0338283 O W MIL-W-48272 (AR) AMENDMENT 10 2.1, Add the following: HANDBOOKS MI
6、LI TARY MIL-HDBR-20 4 - Inspection Equipment Design * 2.1, Drawings, Change “U.S. Army Armament Command“ to T.J.S. Army Armament Research, Development and Engineering Center (ARDEC) Product and Packaging Drawings“. 1 2.1, Drawings, U.S. Army Armament Command, Add: 1 9211190 9208657 9266382 9266418 9
7、266419 9266422 9266424 9266425 9266426 9266427 9266428 9283999 9332549 9266435 11430220 11430988 I -Pkg and Mkg for Warhead Sect., GM, HE: -Cable Assembly, M251 -Roll Moment Fixture -Test Fixture, Insulation Resistance -Test Procedure and Calibration Instr. -Insulation Resistance Test for Warhead -S
8、ection Cable Assembly-XM251 for C9266418 -Continuity and Resistance, LANCE Warhead with Fuze -Weight Measurement Fixture on Lance Warhead XM251 -Operating Instructions and Calibration Procedures for Weight Measurement on Lance Warhead XM251 for B9266624 -Pitch and Yaw Moment of Inertia Fixture -Oper
9、ating Instructions Lance Warhead, XM251, -Operating Instructions Lance Warhead, XM251, -Metal Parts Assembly M251 -Warhead Section, GM, HE: M251A1 -Test Set, Continuity and Resistance Warhead -Section M251 -Gage Assembly, Acceptance Warhead Interface, -Instruction Tag, Warhead Gage for Missile M251,
10、 Prac: XM198E1; Tng: M201 1 (to be used with A9266426) (to be used with F9266382) M.S. 100.00 Interface 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-48272 (AR) AMENDMENT 10 * 2.1, Drawings, U.S. Army Armament Research, Development and Engi
11、neering Center (ARDEC) Product and Packaging Drawings: Change the Nomenclature number to read: “M251, M251A1 and M251 (Mod)“ in the title of the following drawings: 9211190, 9266419, 9266425, 9266424, 9266427, 9266428, and 9266435. 2.1, Drawings, U.S. Army Armament Command; Add: “12555998 -Warhead S
12、ection, GM, M251 (Modified) with 12597937 -Pkg and Mkg for Warhead Section, GM, * Live FLSC and Inert Loaded Bombs,.Dummy M251 (Modified) with Live FLSC and Inert Loaded Bombs , Dummy“ 2.2, Add the following: “AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D1621-73 -Test for Compressive Stre
13、ngth of Rigid Cellular Plas tics ASTM D1622-63 -Test for Apparent Density of Rigid Cellular Plastics * 3.2, Delete in its entirety and substitute the following: “3.2 Parts. The parts shall comply with all requirements specified on Drawings 9284000, 9332549, and 12555998, all associated drawings, and
14、 with all requirements specified in applicable specifications.“ 3.4 - Delete in its entirety. 3.5 - Delete in its entirety PAGE 6 4.3.2.1, Title - Change “XM251“ to “M251“ 4.3.2.1, Major Defects; Change “100% inspection“ to “AQL = 0.40% (Note 1)“ 3 Provided by IHSNot for ResaleNo reproduction or net
15、working permitted without license from IHS-,-,-MIL-U-48272 (10) 13 7797906 0338285 4 = MIL-W- 4 82 72 (AR) AMENDMENT 10 4.3.2.1 - Delete Major 106 and substitute: “106. Distance from aft ring assembly to longitudinal end primer (with booster cover off) - See View L GAGE 01006“ 4.3.2.1, Major 107; Ch
16、ange “barrier cover“ to “booster covef“. 4.3.2.1; Add Note 1 as follows: I “Note 1. For Lot Sizes below 90 items, the AQL shall equal 1.0%“ PAGE 7 i 4.3.2.1, Minor 201 - Change Code No. “01010“ to 01012“. PAGE 9 4.3.2.7; Add the following: “104. Holes missing Visual O 7 O O 5 I 4 Provided by IHSNot
17、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-48272 (AR) AMENDMENT 10 PAGE 10 * 4.3.2.10; Delete in its entirety and replace with the following: Categories Defects Critical: None defined Major: 101. 102. 103. 104. 105. 106. 107. 108. 109. 110. 111. 112. 113. Mi
18、nor: 201. Method of t Inspect ion 100% Inspection Presence of plate (Dwg. 9331775) prior to loading, (M251A1 only) Presence of aft filler (M251A1 only) Containment block pad missing or improperly installed Wood blocks missing Distance to bombs and wood blocks Polyethlene sheets improperly installed,
19、 torn, or missing Incorrect number of hag and bag filler assemblies Bag and bag filler assembly flaps facing forward Wedges missing or improperly assembled Skin missing or improperly assembled Spacer missing or improperly assembled Insulation tape missing damaged or improperly installed on aft ring
20、assembly O-Ring missing, damaged or im- properly installed on aft ring assembly Evidence of poor workmanship (see 3.6) Visual Visual Visual Visual Gage Visual Visual Visual Visual Visual Visual Visual Visual Visual Code No. 10013 10014 10001 10002 10003 10004 10005 10006 10007 10008 10009 10010 1001
21、1 10012 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-48272 (AR) AMENDMENT 10 * 4.3.2.11, Title: Delete in its entirety and substitute the following: “4.3.2.11, Warhead Section, GM, HE: M251, M251A1 and M251(Modified) with live FLSC and ine
22、rt loaded bombs, dummy after assembly of aft rinq assembly and prior to assembly of boosters (See dwqs 9284000, 9332549 and 12555998).“ PAGE 11 4.3.2.11, Major 105; Delete “See Dwg. 9283999 - View L“ and substitute “See Section G-GI. 4.3.2.11; Add the following: “114 Shims or adhesive covering Visua
23、l 11015 ends of booster that is in- ser ted through booster cover hole (prior to assembly of boos ter) 115 Shims or adhesive on side of Visual 11016 booster that contacts end primer in MDF and primer assembly (after assembly of booster) I 4.3.2.11, Major 106: Delete in its entirety and substitute: “
24、106 Distance from aft ring assembly to longitudinal end primer (with booster cover off) - See Section G-G 11018 PAGE 12 * 4.3.2.12, Title: Delete in its entirety and substitute: “4.3.2.11 Warhead Section, GM, HE: 251, M251A1 and M251(Modified) with live FLSC and inert loaded bombs, dummy during and
25、after assembly of fuze, port covers and boosters (See dwgs 9284000, 933549 and 12555998) .I 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-48272 (AR) AMENDMENT 10 4.3.2.12: Add the following: “110 Booster (3) installed in Visual 12012 rever
26、sed d irec t ion. * 4.3.2.13, Title: Delete in its entirety and substitute: “4.3.2.13 Warhead section, during loading, GM, HE: M251, M251A1 and M251 (modified with live FLSC and inert loaded bombs, dummy (See dwqs 9284000, 9332549 and 12555998).“ I 4.3.2.13, Major 101: Delete phrase “and between for
27、ward and aft skins“. 4.3.2.13, Major 104: Delete in its entirety and substitute: “104 Tee bolts bind or too Manual 13004 loose in cavities“ 4.3.2.13, Major 106: Delete “Gage“ and substitute “Dwgs. 9266424 4.3.2.13, Major 109: Delete “Test“ and substitute “Dwgs. 9200664, and 9266425“. 9266387 and 926
28、6430“. 4.3.2.13, Major 110: Delete “Test“ and substitute “Dwgs. 9266382 and 9266428“. 4.3.2.13, Major 112 : Change “Gage“ to “Visual“. 4.3.2.13 : Add the following : 115. Forward facing step at nose Gage 13016 cone assembly, max. 116. Aft facing step at nose cone Gage 13017 assembly, max. or illegib
29、le. 117. Marking missing, incomplete Visual 13018 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-48272 (AR) AMENDMENT 10 4.3.2.13, Major 111: Delete “Gage“ and substitute “11 43 O 2 2 0/114 3 O 9 8 8 . * 4.3.2.14, Title: Delete in its entire
30、ty and substitute: “4.3.2.14 Pkg and Mkq for Warhead Section GM, HE: M251 M251A1 and M251 (Modified) with live F1SC and inert loaded bombs, dummy; Prac: XM198E1, Tng: XM201, prior to assembly of cover assembly (See dwq 9211190 or 12597937).“ 4 *4 3.2.14, Major Defects - Add: “100% Inspection“ PAGE 1
31、4 3.2.15, Title: Delete in its entirety and substitute: 4.3.2.15 Pkg and Mkq .for warhead Section GM, HE: M251 M251A1 and M251 (Modified) with live FLSC and inert loaded bombs, dummy; Prac: XM198E1, Tnq: XM201 (See dwq 9211190 or 1259737. II 4.3.2.15, Major Defects - Add: “100% Inspection“. . 4.3.2.
32、15: Add Major 106 as follows: “106. Stacking bolts, missing or Visual damaged. Add the following: “4.3.2.16 Spacer, foam (See Dwq. 9312646). Categories Defects Critical: None defined Major 101. Thickness 102. Depth of cut (2 sides) Gage Gage 8 Method of Inspection 15 O O 7 I Code NO 23001 23002 Prov
33、ided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-48272 (LO) 13 m 7779706 O3L827O 8 MIL-W- 4 82 72 (AR) AWNDMENT 10 Minor 201. Outside diameter 202. Inside diameter 203. Width of small cutout 204. Depth of small cutout 205. Width of large cutout 206.
34、 Depth of large cutout 207. Evidence of poor wor kmanship (See 3.6) I Gage Gage Gage Gage Gage Gage Visual i Add Para: 4.3.2.17 as follows: “4.3.2.17 Filler, aft (See Dwg. 9331772) Categories Defects Critical: None defined Major : 101. Length 102. Largest outside diameter 103. Second largest outside
35、 diameter 104. Inside diameter 105. Density (Note 1) 106. Compressive strength (Note 1) 107. Surface Finish (See Note 2) 108. Forward lead angle improper Minor: 201. Evidence of poor workmanship (See 3.6)“ Method of Inspection Gage Gage Gage Gage Test Test Visual Gage Visual 23003 23004 23005 23006
36、23007 23008 23009 Code No. 24001 24002 24003 24004 24005 24006 24007 24008 24009 Note 1: A three (3) sample (from 1 part) average shall be used to verify compliance. Note 2: The surface finish shall be smooth and hard (as molded) with no evidence of loose, crumbling particles. Add para 4.3.2.18 as f
37、ollows: “4.3.2.18 Filler, nose (See Dwg. 9331774) 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.i_ MIL-W-LI8272 (30) 13 W 9999906 0338293 T W MIL-W-48272 (AR) AMENDMENT 10 Categories Defects Critical: None defined Major: 101. 102. 103. 104. 105.
38、 106. 107. 108. 109. 110. 111. Minor: Length Largest outside diameter Second largest outside diameter inside diameter Width of small cutout (2 places) Width of large cutout (2 places) Depth of small cutout (2 places) Depth of large cutout (2 places) Chamfer Density (Note 1) Compressive strength (Not
39、e 1) 201. Evidence of poor workmanship (See 3.6)“ Method of Code 1 Inspection No. Gage Gage Gage Gage Gage Gage Gage Gage Visual Test Test 25001 25002 25003 25004 25005 25006 25007 25008 25009 25010 25011 1 Visual 25010 Note 1: A three (3) sample (from 1 part) average shall be used Add Para 4.3.2.19
40、 as follows: 1 to verify compliance. “4.3.2.19 Plate (See Dwq. 9331775) Categories Critical: None defined Major : 101. Outside diameter 102. inside diameter 103. Thickness 104. Protective finish Defects Method of Code No. inspection Gage Gage Gage Visual 26001 26002 26003 26004 10 Provided by IHSNot
41、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-48272 (AR) AMENDMENT 10 Minor: 201. Evidence of poor workmanship (see 3.6) 26005 4.3.3.2: Add after “4.3.4“, “(See Dwgs. 9266435)“. 4.3.3.4: Add after “4.3.4“, “(See Dwg. 9266418 and 9266419). This test to be perfo
42、rmed after performance of tests and inspections in Para 4.3.2.13, Majors 106 thru 110.“ a 4.3.3.5: Add after second sentence, “This test to be performed after performance of tests and inspections in Para 4.3.2.13, Majors 106 thru 110.“ c 4.3.3.5: Add after Iu4.3.411, “(See Dwg 9266435)“. 4.3.3.6: Ad
43、d after “4.3.4“, “(See Dwg. 9266422 This test to be performed after performance of tests and inspections in Para 4.3.2.13, Majors 106 thru 110.“ 4.3.3.6: Change “See 3.4“ to “(See Dwg. 9284000, 9332549, and 12555998) “. 4.3.3.7: Delete in its entirety. Add Para 4.3.3.8 as follows: “4.3.3.8 Density a
44、nd compressive strenqth of polyurethane fillers (See Dwqs. 9331772 and 9331774), Major Defect, Codes 24005/25010 and 24006/25011. One (1) part from each lot of nose and aft fillers shall be selected for test. The density tests (non-destructive) shall be conducted on the compressive test specimens pr
45、ior to performing the compressive tests. The compressive strength specimens shall be taken from the part after removal of the filler part skin. The three 2-inch cube specimens shall be cut at 1200 intervals around the part; one at the top, one at the bottom, and one midway up the part. Thesetests sh
46、all be performed using equipment in accordance with 4.3.4. Any lot which fails to comply with the specified requirement shall be rejected.“ PAGE 16 4.4.6 - Delete in its entirety and replace with the following: 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
47、rom IHS-,-,-MIL-W-48272 (LO) 13 %I 9774706 0318273 3 MIL-W- 4 82 72 (AR) AMI3NDMENT 10 “4.4.6: Continuity and resistance of cable assembly of loaded warhead when fuze is installed at the time of Loading. The continuity and resistance of the cable assembly/fuze shall be tested in accordance with Dwg.
48、 9284000 (M251) or Dwg. 9332549 (M251E1) I using approved test equipment. This is a nondestructive test. Assemblies subjected to this test shall be returned to the lot.“ * 4.4.6: Change “Dwg. 9284000 (M251) or Dwg. 9332549 (M251Al)“ to “Dwgs. 9284000 (M251) I 9322549 (M251A1) or 12555998 (M251) (Mod
49、) I. PAGE 17 4.4.7: Delete in its entirety. Add Para 4.4.9 as follows: “4.4.9 Density and compressive skrength of polyurethane fillers. The density tests shall be conducted in accordance with ASTM standard D-1622 and the compressive strength tests in accordance with ASTM standard D-1621. Parts from which specimens are taken shall not be retur
