1、- MIL-C-483bA 13 W 7779706 0427335 I W . . . $FezJW COMMAND (ARRADCOM) PKODUCT AND PACKAGING DRAWINGS 9275526 - Cartridge, 60MM, HE, M720 9293287 - Packing and Marking Container I Ammu- nition, Fiber, PA for 60MM Cart- ridge, HE, M720 w/Fuze M734 9293439 - Packing and Marking for Container , Ammunit
2、ion, Metal: PA 70 for 60MM, Cartridge, HE, M720 w/Fuze 24734 9293440 - Box, Wirebound, Packing, Ammunition for 60LW Cartridge, HE, M720 w/Fuze M734 Packing and Marking INSPECTION EQUIPMENT DRAWINGS 7256281 - Alignment Check Plug 7256348 - Alignment Gage 7257962 - Limit Check Gage 9246386 - Inspectio
3、n Equipent for Measuring Leakage Metal Ammunition Containers (Copies of specifications , standards , handbooks , drawings , and publications required by manufacturers in connection with specific acquisition functions should be obtained f ran the contracting activity or as directed by the contracting
4、 officer .) 2.1.3 Order of ,precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this specification shall take precedence. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-4
5、8368A 13 = 7777706 0317397 2 MIL-C-48368A (AR) 3. REQUIREMENTS 3.1 NaterialS. Materials shall be in accordance with applicable drawings and specifications. produced in regular operations may be remelted and reused provided that it complies with the requirements, except for form, for the grade of hig
6、h explosive specified. Scmp fran floor sweepings, ventilation, and suction apparatus (other than f ran drilling operations specifically controlled to prevent contamination of explosive) shall not be used. 3.1.1 Clean explosive scras. Clean scrap (see pra. 6.5) 3.2 Cartridqe. The cartridge shall canp
7、ly with all requirements specified on drawing 9275526, and with all requirements specified in applicable specifications. broken explosive fran the sidewalls of the fuze well shall not exceed in aggregste more than 1/4 of the circumference. The msximum (max.) dimension of any visible cavity in the fa
8、ced (bottom) surface of the fuze well shall not exceed 1/4 inch in any direction and the total area of all cavities shall not exceed 80 percent of the faced surface area. No individual point of explosive shall extend above the flat surf3ce on which the liner would rest. (Cavities h3ving 3 max. dimen
9、sion of 1/16 inch or less shall be disregarded in this computation). 3.3 Surface cavitation. Cavities formed due to chipped or 3.4 Foreign matter i.n projectile cavity. There shall no foreign matter in the projectile cavity prior to high explosive pouring. Solid explosive shall not be present. 3.5 H
10、iqh explosive on threads. Threads shall be free high explosive. be of 3.6 Hiqh explosive on projectile body. Exterior surface of the projectile body shall be free of high explosive. 3.7 Ballistic performance (Provinq qround). The cartridqes shall canply with the following requirements (see para. 4i4
11、.3.2). 3.7.1 Misfire. The cartridges shall not fail to fire from the we3 pon 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-48368A 13 W 9999906 0319qOO 5 M - - MIL-C-48368A (AR) 3.7.2 Duds. - The cartridges shall function on impact. 3.7.3 -
12、Short rounds. No cartridge shall have a horizontal range less than 80 percent of the average horizontal range when calculated without the short rounds. 3.7.4 Premature -_-_- burst. There shall be no premature burst in the gun bore or in the flight. 3.7.5 Metal Earts - seearation. - There shall be no
13、 metal parts separation in the gun bore or in flight. 3.7.6 Range - - precision. The horizontal range standard deviation shall be no greater than 11 meters when fired at charge zero, no greater than 55 meters when fired at charge two and no greater than 75 meters when fired at charge four. 3.8 Cavit
14、ation in high exelosive charge (see 4.5.3). 3.8.1 General. - Cavities having a maximum (max) projected . -_-_I dimension of 3/32 incn or less shall be disregarded provided that they are separated by 1/2 inch or more of solid explosive. Maximum Erojected areas and dimensions of cavities. The aggregat
15、e of the projected area of all cavities shall not exceed 1 square inch and no individual cavity shall exceed 1/2 square inch. Cavities located in the area of the charge Nhich extends from the base of the fuze well to 2.5 inches below the base of the fuze well shall not exceed 3/4 inch in any uirecti
16、on ana their aggregate projected area shall not exceed 5/8 square inch. 3.8.2 - . 3.8.3 P (1) the frequency (production interval) for validating equipment functioning, (2) the methods and procedures for validation including designs of defect standards and (3) a description of material control proced
17、ures to be impose on product passing through each automated station during the producton interval between validations. Under these provisions final acceptance will be withheld from material produced during a production interval until satisfactory validation of each of the automated stations so contr
18、olled. In the event of a valiation failure of any station, the material processed througn such station since the last acceptable validation shall be placed in a rejected status pending corrective action. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
19、,-,-MIL-C-LI83bA 23 m 79737Ob 031740q 2 mi r P c !i? n 8 c d Y Y Z O k Y) 3 O I ?.i a O m d w 5 m .d 3 rr) 3.i 4J .d 3 a u a, P LI w I= u C -4 c, u a, -n a O c P .d aJ - 8 crr a, .Q c c, 3 CTi c .d 4J a O u al 3 -4 ci u a, 2 .d u a o ?L! al c .d CCI a, a -4 8 ni .d c a 5 Y 2 a 8 a, IC1 O a, u C u4J
20、al a, OIU c, Q.4 cm3 2 O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 8 t 1 H MIL-C-43bA 13 7999706 0339405 4 E 8 . 0. . m m m rr) m m +i a O Q al rl ci u al -n O .FI ti g 8 x c O .FI rl al c ui X .FI 9 Provided by IHSNot for ResaleNo reproducti
21、on or networking permitted without license from IHS-,-,-VIL-C-48368A 33 M 7774706 0337406 b D c -4 rl rl a, P. O PI a, tn u m c U LI . a, a, al ai o o Y U rl d m 31 m mm u P4 dp dPdP O O0 O ri rlrl a, 2 ai Cu” n nn ma YU rb U ; .rl E al tn LI m c u C F E .FI d rl a, pi a u C 4J c 0 .FI a, 3 v) o u E
22、i .rl LI 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-483hA 13 W 7777906 0317407 M 8 rl a, oi u .rl LI U :a U ILI h -3 cn en a o In N r- 03 n N Id W cn al N c, r- a .rl SE 3 O rl a, 1) LI O c rn LI a, 4J $ 31 rl d 1 W O uoi m mm a, c c, I
23、I - c O rl ci a ci rn rn rl c ci 2 41 8 LI LI pr rl ci Id ci rn a ci m cl LI O U LI a, a a, Q C m u o ci u a, U a, U Li O U c O cr u a, pi IO. ch ALI a urn Grn E+ 0 u a, -e a -5 a, a, a E d $ u i$ - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I M
24、IL-C-48368A 33 W 7797706 033708 T m ci c 8 b ai 01 a .d LI ci Li m u di - o. . mmmm m w di O cn w -4 a O 2.L . L Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-C-483bA 13 W 7777706 0337407 Ir E 31 Li al alu ai -I4 u-l al a al c O 2 .d u4 QI a
25、QI c O z .c c m - uici Li i4 c 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 ts t d 2 c5 % rl m al rn c 3 Y LI al C .FI c, c O Y LI al Q m .FI MIL-C-48368A 13 W 7797706 03L74LO 8 W . dd ddd rid mm lamm mm 55 555 55 rnrn rnrnrn rnrn .FI .FI .FI
26、 .FI .FI .FI .FI 33 333 33 k rl 11 rn rn m .lJ a VI al m u m Q 8 !3 c a o al c m .FI W c m c k Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-LI36A 13 7779706 0317LI11 T M 1 rl % t a rl w h 5 a, rl (Il a, rn v Li a, C .d (Il ci u 8 i .d Er el-
27、 I (II (II0 .Pl .d .Pl -4 (Il 3 33 3C 1 ci C a, 5 .FI .FI 5 8 8 5 $ 5 a, m ci C ci (II .d 1 5 (II E 4 .d i value shall be 144, f value shall be 1/24, and the S value shall be 1800. Any cartridge having cavitation in excess of that permitted by the applicable requirement for any segment shall be clas
28、sed defective. The test shall be performed as specified in 4.5.3. 4.4.4 - Inszection - eguipment. The inspection equipment required to perform the examination and tests prescribed herein is described in the “Paragraph Ref erence/Inspection Method“ column in the tables starting with paragraph 4.4.2.1
29、. The contractor shall submit for approval inspection equipment designs in accordance with the terms of the contract. See section 6 of MIL-A-48078 and 6.2 herein. 4.5 Test methods and Erocedures. 4.5.1 Air - leakage - test. The shipping and storage - - containers shall be tested in accordance with d
30、rawing 9246386. 4.5.2 Proving - ground -I test. The test shall De performed at a Government Proving Ground in accordance with the applicable USATECOM Acceptance Test Procedure. The cartridges for first article testing shall be separate into three equal groups; one group conditioned for 24 hours at p
31、lus 145OF + 2.5OF, one group conditioned for 24 hours at plus 7OoF +-2.5OF, ana one group conditioned for 24 hours minus 50O-+ 2.5OF. Each group shall be separated into three equal-subgroups; one subgroup tested at charge zero, one subgroup tested at charge two, and one subgroup tested at charge fou
32、r . The cartridges for production lot acceptance shall be conditioned at 70OF + 2.50F. The sample for the first three production lots (90) shall be separated into three equal groups; one group tested at charge zero, one group tested at charge two, and one group tested at charge four. After three con
33、secutive lots have complied with tne acceptance requirements, the production lot sample (48) shall be separated into two groups; one group tested at charge zero, and one group tested at charge four. The cartridge shall be fired from a standard 60MM LWCMS mortar at an elevation of forty-five degrees
34、from a hard mount (a solid base test fixture) within two minutes after removal from the conditioning chamber. All fuzes shall be set for impact functioning . The individual velocities, pressures, deflections, ana ranges shall be recorded on the firing record. 20 . L Provided by IHSNot for ResaleNo r
35、eproduction or networking permitted without license from IHS-,-,-MTTJ-C- 4 8 36 8 4 (AR) Observation shall be made for misfires and duds, and shall be recorded. Should a premature burst or metal parts separation occur, a photograph shall be taken of the evidence and attached to the firing record. Th
36、e velocity and range standard deviations and arithmetic averages shall be calculated and recorded. Range probable error shall be calculated and recorded. Temperature of the day, weather and the time of firing shall also be recorded. Hawk radar shall be used to observe for metal parts separation, uno
37、bserved short rounds and unobserved duds. In these events, an analysis should be made of the radar data and slould be noted on the firing record. This shall include a comparison of times of flight of the unobserved rounds with that of the normal rounds. Prints of the radar traces of these rounds, an
38、d prints of the preceding and succeeding rounds, shall be attached to the firing record. nata from ballistically acceptable lots may be discarded. A smear camera shall be used to photograph all test samples. The camera shall be positioned to pick up each round just outside the second velocity coil.
39、Should an unobserved dud, short round or any other abnormal performance occur, a photo print of these rounds, and prints of all the other rounds in that particular charge zone, shall be attached to the firing record. Film from acceptable lots may be discarded. 4.5.2.1 Test - validity. If for any rea
40、son the proving ground personnel considers that the test conditions have detrimentally affected the test result, the test results shall be declared invalid and a new test shall be performad on additional sample cartridges. 4.5.3 Determination of cavities. The sample cartridges (Hk: filled) shall be
41、subjected to radiographic examination. The radiographic Seam shall form a 90 angle with the longitudinal axis of the projectile. Examinations of the radiograph chal1 be made to determine compliance with applicable requirements. Radiographic equipment, operations an3 procedures shall Se qualified in
42、accordance with MIL-STD-453. In addition, the sensitivity of the radiographic technique shall be 2.0 percent, and the photographic density of the film used shall be no less than 1.25, as determined in accordance with 4.5.3.2. In the event an original radiograph leave doubt as to acceptability, the c
43、artridge shall be re-radiographed at an angle 90 from that of the original exposure and in the same plane. 4.5.3.1 Sensitivity check of radiographic technique. The sensitivity of radiographic technique shall be determined by the means of a penetrameter fabricated as specified herein. 21 O e Provided
44、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-483bA 23 = 7779706 032742 2 MIL-C-48368A (AR) Location of the penetrameter hole shall be 6 3/4 inches measured from base shoulder of projectile body towards fuze nose threads. The projectile, with attache
45、d penetrameter, shall be positioned between the radiographic source and the radiographic film with the penetrameter facing the radiographic source. Wnen radiographing d group of projectiles on a rotating ring, the penetraneter, taped to a projectile, may be used to represent the group when checking
46、sensitivity. The sensitivity of radiographic technique shall be considered satisfactory when the image of the penetrameter , including the holes, is sharply defined on the radiograph. The penetrameters ahail be made of steel having an approximate specific gravity of 7. 8. Penetrameter thickness shal
47、l be .O20 plus or minus (+) .O10 inches. Each penetrameter shall have a circular hole with a diameter twice tnat of the penetrameter thickness. For f urttlex details on. construction of the penetrarneters, see MIL-STD-453. Frequency of sensitivity check shall be no less tnan one in each fifty (50) r
48、adiographs. 4. 5.3.2 Check of photographic density of film. The pnotoyraphic density of the film shall be determined on the filin in the region of the maximum equivalent thickness to be radiographed. Film density shall be checked each hour of operation, or fraction thereof, for each film processor . Greater frequency shall be required for any period during which dificulty is encountered in establishing the required deLisities. To judge densities, it is recommended that s
