1、MIL-C-Yb578D 13 9777906 03L3L70 I MIL-C-46578D 12 I3EcEMBER 1983 SUPERSEDING MIL-C-46578C 23 August 1977 MILITARY CPECIFICATION , CARTRIDGE, 20MM, HIGH EXPLOSIVE, INCENDIARY, M56A3 LOADING, ASSEMBLING AND PACKING This specification is approved for use by all Departments and Agencies of the Departmen
2、t of Defense. 1. SCOPE 1.1 Scope. This specification covers requirements, quality assurance provisions, preparation for delivery for: one type of cartridge designated as Cartridge, 20MM, High Explosive Incendiary, M56A3 for use in Guns, 20MM, Automatic. 2. APPLICABLE DOCUMENTS 2 . 1. Government docu
3、ments. 2,l.l Specifications and standards. Unless otherwise specified, the following specifications and standards of the issue listed in that issue of the Department of- Defense Index of Specifications and Standards (DoDfSS) specified in the solicitation form a part of this specification to the exte
4、nt specified herein. SPE CI FICATI CINC MILITARY MIL -A-4 8 O 7 8 - Ammunition, Standard Quality Assurance Provisions, General Specifications for STANDARD MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes FSC 1305 Beneficial comments (recommendations, additions, dele
5、tions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, US Arm Armament Research and Development Center, Attn. DRSMC-BA, Dover, New Arsey 07801 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing a
6、t the end of this document or by letter. THIS DOCh4ENT CQNSTAINS 2 PAGES. ,. . .a$ * 1 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-qbS7D 13 77777Ob 0313171 3 m MIL-C-4 6 5 7 8D (AR) MIL-STD-6 44 - Visual Inspection Standards and Inspectio
7、n Procedures for Inspection of Packaging, Packing and Marking for Small Arms Ammunition MIL-STD-6 5 1 - Visual Inspection Standards for 20MM Ammunition and Components 2.1.2 Other Government documents, drawings and publications. The following other Government documents, drawings and publications-form
8、 a part of this specification to the extent specified herein. DRAWINGS (See 6,5) U.S. Army Armament Research & Development Center (ARDC) I? r oduc t D r awinqs 7258801 - Classification of Defects for Case, Cartridge, 2OMM, M103, M103A1 and M103B1 Explosive Incendiary, M56A3 Equipment Lists for: Cart
9、ridge, 20MM, High Explosive Incendiary, M56A3 Explosive Incendiary for the M56A3 Cartridge 20MM, HEI for the M56A3 Cartridge 7259023 - Cartridge, 20MM, High LI 7259023 - Index of Inspection 7259024 - Projectile, 20MM, High 7259025 - Charged Body, Projectile, Inspection Equipment Drawings 7259424 725
10、9443 7296962 7555162 7556901 8655181 8655592 11075013 11075060 11075126 L1075284 Gage, Torque Testing Rack, Cartridge Indicator Gage Gage, Chamber Indicator, Canparator Gage Alignment Check Taper Plug Gage Ring Gage, Go, Special Gage, Feeler Gage, Indicator Test Fixture (Projectile Extraction) Prime
11、r Resistance Test Circuit 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-46578D L3 390h 0313172 5 m I MIL-C-46 5 78D (AR) PUBLICATIONS U. ARMY MATERIEL COMMAND AMCR 715-505 - Ammunition Ball is tics Acceptance Test Methods, Volume 8, Test Pr
12、ocedures for 20MM Cartridges (Copies of specifications, standards, handbooks, drawings and publications required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) of this specification to th
13、e extent specified herein. otherwise indicated, the issue in effect on the date of invitation for bids or request for proposal shall apply. 2.2 Other publications. The following documents form a part Unless CODE OF FEDERAL REGULATIONS TITLE 49 - Transportation, Parts 100-199 (The Code of Federal Reg
14、ulations is available from the Superintendent of Documents, US Government Printing Office, Washington, DC 20402. Orders should specify “49 CFR 100-199 (latest revision)“.) the text of this specification and the reference cited herein, the text of this specification shall take precedence. 2.3 Order o
15、f precedence. In the event of a conflict between 3. REQUIREMENTS 3.1 General. a Material. Materials shall be in accordance with the applicable drawings and specifications. b. Manufacturinq process. All parts and a.ssemblies shall be manufactured by a process approved by the contracting officer, and
16、no deviation from that process shall be made without prior approval (6.13). 3.2 Cartridge. The cartridge shall cmply with all requirements specified on Drawing (Dwg.) 7259023, all associated drawings, and with all requirements specified in applicable spec if icati ons. 3 Provided by IHSNot for Resal
17、eNo reproduction or networking permitted without license from IHS-,-,-MIL-C-46578D (AR) a. Projectile Pull Test. The force necessary to extract the projectile frm the cartridge case shall be 1100 and 2800 pounds, inclusive. b. Projectile Torque. The projectile shall withstand a minimum torque of 10
18、inch pounds without movement. 3.3 Contamination of enerqeti.c components. Extreme care shall be exercised to avoid contamination of primers and propellant by oil, grease or other foreign matter. 3.4 Electrical resistance of primed case. The electrical resistance of the primed case shall not be less
19、than 500 ohms or more than .1,200,000 ohms. 3.5 Functioninq. The cartridge shall comply with the following : 3.5.1 Conditioned at 68% to 72%. - a. Velocity. Average velocity of the projectile shall be 3380 5 50 feet per second (fps) at 78 feet fram the muzzle of the gun and the standard deviation sh
20、all not exceed 40 fps. 6.6) (See b. Pressure. Average chamber pressure (x) plus 0.84 times the average range (E) (see 6.7) of the chamber pressure shall not exceed 60,500 pounds per square inch (psi). c* - Waterproofness. The average velocity (wet) of projectiles shall not vary from the average velo
21、city (dry) of projectiles by more than 100 fps. 3.5.2 Conditioned at -65%. The action time of the sample cartridges and the average actyon time (2) plus four sample standard deviation(s) shall not exceed 4.0 milliseconds. (See 6.6) 3.5.3 Conditioned at ambient temperature. a. Function and casualty.
22、Cartridges shall function without casualty when fired in the automatic weapons. b. Projectile plate function. Projectiles shall function with high order detonation upon target impact. 1, Section 6, AMCR 715-505, Vol. 8 and See 6.8 and 6.10.) (Chapter c. Accuracy. Average mean radius of all targets s
23、hall not exceed 15 inches (accuracy) at a range of 600 yards. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MPE-C-46578D (AR) 3.5.4 Safety. There shall be no premature burst (see 6-11), or evidence thereof, nor any projectile sticking in the gun
24、bore in any of the tes% firings. 3.6 First article inspection, This speccfication contains techngcal. provisions for first artich inspection. Requirements for the submission of first article samples by the contractor shall be as specified in the Contract. 3.7 Workmanshie. The requirements for workma
25、nship are as specified by applicable drawings, referenced specifications and the following: 3.7.1 Processing defects. The metal parts and assemblies shall be free of cracks, splits, ruptures, perforations, dents, deformities, exposed explosive and other forms of substandard wor km ansh ip . 3.7.2 Cl
26、eanliness, A11 components and assemblies shall be free of foreign matter, such as oil, grease, corrosion, dirt, chips, etc. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection and standard quality assurance provisions. Unless otherwise specified herein or in the contract, theprovisions
27、 of MIL-A-48078 shall apply and are hereby made a part of this detail specification. 4.2 Classification of inspections. The following types of inspection shall be conducted on this item. a. First Article Inspection (4.3) b. Quality Conformance Pnspeetisn (4.4) L 4.3 First article inspection. 4.3.1 S
28、ubmission. The contractor shalf submit a first article as -d by the Contracting Officer for evaluation in accordance with the provisions of 4.3.2. The first article sample shall consist of the following items in sample quantities as indicated, Part Description Drawinq Quantity Charged Body, Projecti
29、le Projectile Assembly Cartridge Packaging 7259025 125 7259024 125 7259023 680 (See 5.1) 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-C-46578D 33 9777706 0333395 0 w - . - MIL-C-46578D (AR) 4.3.2 Inspetions to be performed. See MIL-A-48078
30、and Table 4.3.3 Rejection. See MIL-A-48078. Failure of the original I herein. first article sample to be in accordance with the applicable drawings and requirements of Table I, as specified herein will result in sample disapproval. 6 Provided by IHSNot for ResaleNo reproduction or networking permitt
31、ed without license from IHS-,-,-MIL-C-6578D 13 m O6 033337b 2 m n 00 In D e i u I E! rl 8 t Fi H I VI u c aJ c O 8 u 5 c cp 0 br 5 .Id & ci LI m u M -lJ u aJ u-l aJ b 8 w -4 ci -4 c PI 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-C-4b578D
32、13 777770b 0333J77 4 m: MIL-C-46 5 78D (AR) 4.4 Quality Conformance Inspection. 4.4.1 Inspection lot formation. Inspection lots shall comply with the lot formation provisions of MIL-A-48078. each inspection lot shall contain: manufacturer . In addition, a. Cartridge cases from one interfix lot numbe
33、r from one b. Projectile parts from one interfix lot number from c. Fuze assemblies from one interfix lot number from one d. Primers frm one interfix lot number from one e. Propellant from one lot number from one manufacturer. f. High explosive from one interfix lot number from one one manufacturer
34、. manufacturer. manufacturer. manufacturer . 4.4.2 Examination. See MIL-A-48078. a. Unless otherwise specified in the Classification of Defects and Test Tables, sampling plans for major and minor defects shall be in accordance with MIL-STD-105, Inspection Level II:. defects as listed herein may be c
35、onsidered collectively on a class basis or defects may be considered individually. When a class basis is utilized the Acceptable Quality Level (AQL) for major defects shall be 1.50 percent and the AQL for minor defects shall be 2.50 percent. collectively on a class basis, the AQL for any individual
36、defect shall be limited to .40 percent. In addition, where three or less defects appear in a classification, sampling plans applicable to a class shall not be used for major defects. shall be tested by the contractor for electrical resistance subsequent to primer crimping and waterproofing, using th
37、e method of 4.5.4.1. 3.4 shall be removed from the lot. and evaluating cartridge visual defects. b. To determine product acceptability, major and minor However, when major defects are considered c. Primed cartridqe cases. Each primed cartridge case Primed cases which fail to meet the requirement of
38、d. MIL-STD-651 and Dwg. 7258801 shall apply in defining 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-4b578D 13 W 9999906 0313198 b T a, l-i -4 4-J u a, rl E Pl 4( 5 0 a TI ar en h la c e, 4 cv Q Lo Lo Ln u Co FI lu 5 v) . 3 *cw a, a, O0 Lo
39、 ln- O0 cv u dd . a T3 a, 4J Q u -4 m c -4 4J Q w m Q a, & Y 8 b w LI 3: a, a a O c, c id e +, a, 4 a, u & 3 O a c4 -4 c -rd E 3 3 z 8 8 O pi W O o, u c o, “c1 -4 3 w I I 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ri 8 t rl z hl hl e d e . I f
40、lIL-C-4b57D 13 777790b 0313177 8 3.i a a al N a I c w IdQI id rcil 10 7 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 MIL-C-qb57BD 13 779770b 0313200 O mI I c u c O *Pl ci m Li 3 P -4 w c u a m a, X al c +.I . 11 Provided by IHSNot for ResaleNo
41、 reproduction or networking permitted without license from IHS-,-,-I rirl rlrirlrlI-4 ri rlrl am ammma a am 35 33313 3 13 rnrnrnrnrn rn rnrn .rl .rl .rl.rl .rl .rl .rl.rl rnrn .rl .rl 33 33333 3 33 r v) w t a, a, 4J rl a, o ri m a pi .rl c m 2 -. 2 .?I E s Llua k O 3 8 O pi ma, o rrlrl u P.tri tJ- O
42、W u0 a, 4 n O W + E O LI w .a . . . oO 8-4 (vmelnw I- 03 08-4 -4 (v N(vN(vN (v cv c rid P/ o 00000 o o -. ct C 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-4b57D 13 77777Ob 0313202 9 I . w 5 u 00 b m * I u I I4 B t- d m drl II . 000. O O0
43、0 o O0 o Ncvcu u) omtn cu mcv cv * al & !Y U 2- . i .i cdD u n 2 al rl .rl U u al -n O & a rei O U UI al U rl rl 3 PI u EtTi i8 v1 e .Qua 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.4.3 Tests. The tests listed in 4.4.2.4 shall be performed o
44、n each cartridge lot in accordance with the test methods prescribed in 4.5. Sample size and acceptance criteria for each test shall be as specified. Only cartridges which have met the visual and dimensional requirements and which have been selected in such a manner that the sample is representative
45、0f the entire lot shall be used in the tests. The selected cartridges shall be mixed thoroughly before being divided into samples for the various tests. 4.4.3.1 All cartridqe firinq tests. The lot shail be rejected if in any firing test one or more of the following casualties occux: a. Misfire assoc
46、iated with e or f of paragraph 6.12. b. Projectile remaining in bore. c. Metal parts separation, except rotating band separation. (See 6.9 . 2) d. Premature projectile functioning. (See 6.11) 4.4.3.2 Function and casualty. Four-hundred cartridges shall be subjected to this test divided equally, 200
47、each for the M39 and M61 weapons. The lot shall be rejected if, at any time, any of the following occurs: a. Any fire “out of battery“ (M61 gun). (See 6,g.l) b. Any primer misfires. (See 6.12) c. Any cartridge case fails to extract. d. Any cartridge case longitudinal split occurs (L or M) (Dwg. 7258
48、801) . e. Any cartridge case circumferential rupture, partial (L) or complete (Dwg. 7258801). f. Any detached metal fran cartridge case occurs. (See 6.9.3) g. Any cartridge fails to chamber. In addition, if the following defects occur equal to or less than the “ACC“ number, the lot shall be accepted. If any defect(s) occur equal to or exceeding the REJ“ number, the lot shall be rejected. If any defect(s) occur in excess of the “ACC“ number, but less than the “REJ“ number, a second sample of 800 cartridges shall be selected and fired in equal numbers in the
