1、L L MIL-C-i825YA 13 77777Qb 0318001 m r c I B !a I MILITARY SPECIFICATION MIL-C-48254A (AR) SUPERSEDING MIL-C-48254 10 July 1975 30 July 1984 CHARGES I EXPELLING, FOR PROJECTILE, 155w, ILLUMINATING, M485A2 LOADING, ASSEMBLING AND PACKING This specification is approved for use by the US Army Armament
2、, Munitions and Chemical Command and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specificatipn covers two types of expelling charge assemblies for use in 155MM, Illuminating Projectile, M485A2. 2, APPLICABLE DOCUMENTS 2.1 Government documents.
3、 2.1.1 Specifications and standards. Unless otherwise specified (see 6.2), the following specifications and standards of the issue listed in that issue of the Department of Defense Index of Specifica- tions and Standards (DoDISS) specified in the solicitation, form a part of this specification to th
4、e extent specified herein. SPECIFICATIONS MILITARY MIL-P-116 - Preservation, Method of MIL-P-223 - Powder, Black MIL-A-480 78 - Ammunition, Standard Quality Assur- ance Provisions, General Specifica- tion for STANDARDS MILITARY MIL-STD- 10 5 - Sampling Procedures and Tables for Inspection by Attribu
5、tes MIL-STD-129 - Marking or Shipment and Storage I 7 Beneficial comments (recommendations, additions, deletions) and any pertine# C data which may be of use in improving this document should be addressed to: Commander, US Arm Armament Research and Development Center, Attn. DRSMC-QA, Dover, New Jers
6、ey O7801 by using theself-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter, I 1 I THIS DOCUMENT CONTAINS - 1% PAGES . 1320 Licensed by Information Handling ServicesMIL-C-48254A 33 999906 0338002 T M MIL-C-48254A (AR) MIL-STD-12
7、 3 5 - Single and Multilevel Continuous Sampling Procedures and Tables for Inspection by Attributes 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this specification to the extent specified herein. DRA
8、WINGS (See 6.5) US ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER (ARDC) 9213756 - Expelling Charge Assembly, Secondary 9370052 - Expelling Charge, Primary, Loading Assembly (Copies of specifications, standards, drawings and publications required by suppliers in connection with specific procurement f
9、unc- tions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. The following document forms a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids shall
10、 apply TRANSPORTAT I ON 49 CFR 100-199 - Interstate Commerce Commission Code of Federal Regulations for the Transportation of Explosives and Other Dangerous Articles The Interstate Commerce Commission Regulations are now a part of the Code of. Federal Regulations available from the Superintendent Do
11、cu- ments, Government Printing Office, Washington D.C. 20402. Orders for the above publication should cite “49 CFR 100-199 (latest revi- sion) II. INSPECTION ANSI Y14.5-1975 - Dimensioning and Tolerancing 3. REQUIREMENTS 3.1 Material. Materials and parts shall be in accordance with applicable drawin
12、gs and specifications. 2 Licensed by Information Handling ServicesMIL-C-48254A 33 W 7799706 0338003 3 MIL-C-48254A (AR) 3.2 Expelling charge assemblies. The expelling charge assem- blies shall comply with all requirements specified on drawing (dwg.) 9213756 and dwg. 9370052 as applicable, and with a
13、11 requirements specified in applicable specifications. 3.3 Moisture content of black powder. The moisture content of the black powder at the time of loading expelling charge, primary, shall be 0.7 percent, maximum (max.) and far expelling charge, secondary, shall be 0.7 percent, (max.), when determ
14、ined as specified in 4.4.3.1 and 4.5.1. 3.4 Leak test of expelling charge assembly, primary. Assemblies shall not exhibit any leakage when subjected to the leak test pre- scribed in 4.4.3.2 and 4.5.2. 3.5 Workmanship. The expelling charge assemblies shall be free from cracks, air bubbles, holes, bli
15、sters, dirt, grease and foreign material. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection and standard quality assurance provisions. Uness otherwise specified herein or in the contract, the provisions of MIL-A-48078 shall apply and are hereby made a part of this detail specificatio
16、n. 4.2 Classification of inspections. The following types of inspections shall be conducted on this item: a. First Article Inspection. b. Quality Conformance Inspection 4.3 First article inspection. 4.3.1 Submission. The contractor shall submit a first article sample as designated by the Contracting
17、 Officer for determination of conformance to 4.3.2. The first article sample shall consist of the following: 3 Licensed by Information Handling ServicesMIL-C-48254A 13 77777Ob 0338004 3 9 I Bag, Expelling Charge Secondary (Prior to I closing ) MIL-C-48254A (AR) l Black Powder PART DESCRIPTION Cup, E
18、xpelling Charge Cover, Expelling Charge Expelling Charge Primary Loading Assy (Prior to Seai ng ) Expelling Charge Primary Loading Assy (Sealed) I Black Powder Bag, Expelling Charge Secondary DRAWING 9370053 9370054 9370052 93 700 5 2 9370052 9213757 9213756 9213756 15 25 25 15 ounces (oz) 15 15 3 o
19、unces (oz) Expelling Charge Secondary 9213756 20 4.3.2 Inspections to be performed. See MIL-A-48078 and Table I herein. 4.3.3 Rejection. See MIL-A-48078. 4 Licensed by Information Handling Services2 v 4 d In cv Co d I u I i 5: MIL-C-48254A 33 W 7779706 0338005 5 U I ri In * mri cum * dd . O. *. cv I
20、n d I . *pci In cum cu d* cr e-# a 0 rl 4 m m rim mm *. rid d mm m . N In .In d ri O Lo cum 4 InIn In cucu ri k ai u c a Id O GI .rl (o LI ?I Id 5 Licensed by Information Handling ServicesN 8 N MIL-C-4825qA 33 777770b 0338006 7 m ?I . a, rl -mi ci u a, O k-ipi k 0- WN L d rlm rl mm m .I O O m rlm ni
21、 k (u a 3 h O k pi Id a G O rnm U cid (u un KI (u nI I! F e cr L m O O F m Q tn 3 a al al c m U a al c .rl w - 4 al a rl al Id u n Licensed by Information Handling Servicesd In d rl. OW owow O mIn * wu O O0 . u (v O rl .“a c1 5 id k Fi id k a O al E ci u) al U al ri u rl -I d c a al rl U d u e, 2 p:
22、 rl 2 n U u -I n D -I 3 i 3 Licensed by Information Handling ServicesMIL-C-48254A 23 E 7799706 03280ltL O - rl I c .rl 4 rl H w 4 O cl C clk Ca, acl -rl x ua, .rl wcik wa, 75 rn3 CO a 73 a, c O a 11 Licensed by Information Handling ServicesMIL-C-48254A 13 7777706 031OL2 2W I- rl rlrl a 2 li CI al a
23、al c O Z W al c .rl w al W al c (II al .tJ -rl 4J (II E Q) tn3 rd tnci Qflrdal IQIQ VI h (II al tnu cw (II c Id E il 12 Licensed by Information Handling ServicesI am IdIda al7 777 dP* O0 aa O0 * al u c Id k al r-l O ci u O ci 7 O a, tn ktn Idc E -2 %E $E o u .ri OE al *rl Id k a, a 3 O PI u Id rl Q
24、u O cr c al 4-J c O U al k 7 +1 o .rl i? .* dl 13 Licensed by Information Handling ServicesMIL-C-48254A 13 W 7777706 03LBOLq b W 8 H E U w pi KI Z H w s O Fri U N E Q i i? Id a c O u a, KI a, m k . E m c .ri rl rl a, w x b u a a I * 777 cocoIn 77 77 mco com o *O *. rlorl O0 O0 c a,& cia, xa 03 O opi
25、 ci -rl Id. Id E hu a, h rl a, ci k a, OD4 rl .rl a 4Jc 14 Licensed by Information Handling Services4.5 Test methods and procedures. 4.5.1 Moisture content of black powder. The moisture content of black powder shall be determined in accordance with specification MIL-P-223. NIL-C-4254A 33 rn 9999906
26、0338035 rn MIL-C-48254A (AR) 4.4.3 Testing. Testing is described in the First Article and Quality Conformance Inspection Tables. 4.4.3.1 Moisture content of black powder. The moisture content of the black powder used in loading the expelling charge assemblies shall be determined at the time of loadi
27、ng. The contractor shall test at least one sample of black powder from each eight hours pro- duction, or portion thereof, of each expelling charge (primary and secondary). Any failure to comply with the applicable requirement shall be cause for rejection of the production represented by the samples.
28、 If loading has begun, assemblies loaded with the non-con- forming black powder shall be rejected. The test shail be as speci- fied in paragraph 4.5.1. 4.4.3.2 Ultrasonic seal test of expelling charge assembly (primary). Each assembly shall be subjected to a leak test in accor- dance with 4.5.2. Any
29、 assembly exhibiting leakage shall be cause for rejection and eliminated from further production processing. 4.4.4 Inspection equipment. The inspection equipment require- ment to perform the examinations and tests prescribed herein is described in the Paragraph Reference/Inspection Method column in
30、the tables starting with Paragraph 4.4.2.1. 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 6.3 herein. 4.4.4.1 Automatic inspection equipment. All automatic test and inspection equipment when utiliz
31、ed by the contractor shall be sub- jected to periodic verification and/or calibration check during pro- duction. The procedures shall include as a minimum: Frequency, method of verification, and the method of retrieval of item produced between verification/calibration. These procedures shall be incl
32、uded in the operation/calibration procedures as required by the above paragraph. 4.5.2 Ultrasonic seal test of expelling charge assembly (primary). Each assembly subjected to this test shall be placed a transparent pressure vessel which contains sufficient water (H2 so that the assembly is completel
33、y immersed to a minimum depth of one inch. The vessel shall then be sealed and the pressure shall be reduced from 760 mm Hg (atmospheric) to 700 mm Hg, The vacuum shall hn 15 Licensed by Information Handling ServicesflIL-C-48254A 13 W 3q99906 031801b T W MIL-C-48254A (AR) be maintained for a minimum
34、 of twenty seconds. Any indication of air bubbles emitting from the expelling charge assembly, particular in the area of the ultrasonic seal shall. be cause for rejection, the unit classified as defective and removed from the lot. 4.5-3 Dimensional control of molded or plastic parts. In place of the
35、 normal sampling and inspections associated with the Classifi- cation of Defects, and after a curing time for the parts has been approved (see Note 1) a sample of four (4) parts (as molded) from each cavity shall be fully inspected dimensionally to qualify a new or reworked cavity for use in product
36、ion. The molded parts shall carry the individual cavity identification, As a control of each cavity during production, the above quantity of parts from each cav- ity shall be inspected for at least the defects listed in paragraphs 4.4.2.1 through 4.4.2.2 after continuous production of each 5,000 par
37、ts or at the end of each week, whichever occurs first. Of the four (4) samples, one (1) sample shall be the last part produced. If any defective parts are found during qualification of the cavity, the cavity producing the defective part will not be used in produc- tion. If any defective parts are fo
38、und when inspection is performed for the control of the cavity, the cavity producing the defective part shall be removed from production. Further, that portion of pro- duction since the last control check shall be returned to the con- tractor for inspection for each separate type of defect according
39、 to MIE-STB-105, using an AQL of 0.40 percent for each major defect and an AQL of 0.65 percent for each minor defect. All cavities removed from production because of some fault, may, after reworking, be returned to production providing they pass the qualification test above. The contractor may reque
40、st a change of inspection frequency providing he presents objective evidence to the Contracting Officer to substantiate the request. Contractor designs of gages and test equipment. required to perform the inspections listed herein shall be forwarded to Commander, US Army Armament Research and Develo
41、pment Center, ATTN: DRSMC-QAR-Q(D) Dover, New Jersey 07801, for approval prior to manufacturer of equipment. The noted sub-paragraphs identify those items and minimum inspections subjected to the requirements of this paragraph. NOTE 1: In establishing a curing time, dimensionally check ten (10) part
42、s from each cavity at periodic intervals (e.g., every 30, 60, etc mim) until dimensional stability is attained. The curing time will be from the time the part comes out of the mold until dimen- sional stability is attained. The inspection data used in deter- mining the curing time shall be sent to C
43、ommander, US Army Armament Research and Development Center, ATTN: DRSMC-QAR-Q(D), Dover, New Jersey 07801. If there is a change in material, or in the cycle time, or if a cavity is reworked, or a new cavity is used, a new curing time shall be established and approved. 16 Licensed by Information Hand
44、ling ServicesMIL-C-48254A 13 W 9977906 03LBOLi I 3 MIL-C-48254A (AR) 5* PACKAGING-: 5.1 Packing. 5.1.1 Level C. The expelling charge assemblies shal be packed in accordance with the Code of Federal Regulations “49 CFR 100-199“ and to afford protection against damage during shipment from the supply s
45、ource to the first receiving activity for immediate use. 5.2 Marking. In addition to any marking required by the contract or order, marking shall be in accordance with Standard MIL-STD-129 and Code of Federal Regulations “49 CFR 100-199“. The DOT marking shall be “BLACK POWDER“. 6. NOTES 6.1 Intende
46、d use. The components covered by this specification are intended or use on the Projectile, 155MM, Illuminating, M485A2. 6.2 Orderins data. See MIL-A-48078. 6.3 Submission of inspection procedures and equipment desgns for approval. See MIL-A-48078. Submit equipment designs as required to: Commander U
47、SARDC, ATTN: DRSMC-QAR-I (D), Dover, NJ 07801. 6.4 Visual examination qualification. When compliance with the applicable requirement is in doubt as result of visual examination, the characteristics may be measured or gaged to determine accepta- bility. 6.5 Drawings. Drawings listed in Section 2 of t
48、his specifica- tion under the heading US Army Armament, Munitions and Chemical Command (AMCCOM) may also include drawings prepared by Rock Island Arsenal, Edgewood Arsenal, Frankford Arsenal, Picatinny Arsenal or ARRADCOM. Technical data originally prepared by these activities is now under the cogni
49、zance of AMCCOM. 6.6 Statements of findings shall show the specific analytical results of each test or inspection performed as required by the applicable drawing or specification together with the specified acceptable limits. 6.7 Submission of first article samples. Instructions as to the location for the evaluation of initial production shall be obtained from the contracting officer. Upon receipt of such request, the contracting officer shall advice the US Army Armament Research and Development Center, ATTN: DRSMC-QAR-Q(D), and instructions will be issued a
