1、MIL-C-70462C (AR) 4 .APRIL 1986 SUPERSEDING MIL-C-70462B (AR) 18 November 1985 MILITARY SPECIFICATION . CHARGE PROPELLING, 155MM, M203A1 LOADING, ASSEMBLING AND PACKING This Specification is approved for use by the US Army Armament, Departments and Agencies of the Department of Defense. .t. Munition
2、s and Chemical Command and is available for use by all 1. SCOPE 1.1 Scope. This specification covers the loading, assembling and packing for one type of propelling charge designated as Charge, Propelling, M203A1 for 155mm Howitzer, M198. 2. APPLICABLE DOCUMENTS 2.1 Government documents 2.1.1 Specifi
3、cations and standards. The following specifications and standards form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall-be those listed in the issue of the Department of Defense Index of Specifications and Standakds (DoDISS)
4、 and Supplement thereto, cited in the solicitation. DISTRIBUTI( SPECIFICATIONS MILITARY MIL-P-223 - Powder, Black MIL-C-43157 - Cloth, Spun Viscose,Rayon Resin MIL-A-48078 - Ammunition, Standard Quality Assurance MIL-L-48176 - Liner (Titanium Dioxide and Paraffin Wax) MIL-P-60356 - Powder, Igniter,
5、Clea-n Burning Impregnated Provisions, General Specification for for Use in Cartridges Beneficial mmments (recommendations, additi-, deletions) Md my pertinent data which may be of use in improving this document should be addressed to: Commanda, US Army Armament Research and Development Canter, Attn
6、: AMSMC-QA, Dover, New Jersey 07801-5001 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or try letter. 6 Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted witho
7、ut license from IHS-,-,-MIL-C-70462C L3 77799Ob 0354770 4 m MIL-C-70462C (AR) STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for MIL-STD-414 - Sampling Procedures and Tables for Inspection by Attributes Inspection by Variables for Percent . Defective Procedures and Tables for Inspec
8、tion by Attributes MIL-STD-1235 - Single .and Multilevel Continuous Sampling 1 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publica- tions form a part of this specification to the extent specified herein. Unless otherwise speci
9、fied the issues shall be those in effect on the date of the solicitation. DRAWINGS US ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER (ARDC) 9345103 - Propelling Charge, M203A1, for 155” How M198 9354642 - Packing and Marking for Container Ammo, Metal PA 103 for Charge, Propelling, 155mm, M203A1, for
10、Howitzer M198 (Copies of specifications, standards, drawings, publications and other Government documents required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the Contracting Officer.) %I 2.1.3 Order of precedence. I
11、n the event of a conflict between the text of this specification and the references cited herein, the text of this speci3ication shall take precedence. I 3 . REQUIREMENTS 3.1 Materials. Materials shall be in accordanec with appli- cable drawings and specifications, 3.1.1 Liner. The liner shall meet
12、the requirements as speci- fied in Dwg. 9378133 and tested in accordance with MPE-L-48P96, 3.2 Propelling charge. The propelling charge Shall ComPlY with all requirements specified in applicable drawings and specifications. 3.3 Weights 3.3.1 Propellant weight. The psopeli u weiiqt7rt shall comply wi
13、th the weight Specified in the loading dathoriza,iow within plus or minus O . 25 ounce e -2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-O R * O e MIL-C-70Llb2C 13 W 79797Ob 0359771 b W MIL-C-70462C (AR) 3.3.2 Charqe, propellinq assembly weight. T
14、he charge propel- ling assembly weight shall not differ by more than 2.0 ounces from the total amount specified in the loading authorization plus average weights of the case body, rear cap and igniter assembly, liner assembly, tie cords and tapes. 3.4 Dimensional gage. 3.4.1 Maximum length. The comp
15、leted charge shall freely enter the prescribed gage. The gage shall be designed to inspect the maximum length. 3.5 Moisture content of black powder. The moisture content of the black powder at the igniter loading station at the time of loading shall not exceed the amount specified in MIL-P-223. The
16、moisture content of the black powder in the basepad of the propel- ling charge shall be determined in accordance with 4.5.5. 3.6 Moisture content of CBI. The moisture content of the Cs1 in the basepad of the propelling charge shall be determined in accordance with 4.5.6. 3.7 Destructive pull test. T
17、he force of the adhesive bond between rear cap and igniter container shall be 200 lbs minimum when determined- in accordance with 4.5.7. 3.8 Proving ground (see 6.7 and 6.8). The muzzle velocity, pressure, and velocity standard deviation shall be as specified in Table I Z C - - one hg 8 M5 Table I V
18、elocity and pressure requirements Avg Ind * Velocity Vel Pres- Maximum (feet per second) St2 dev Max Pressure Minimum Maximum (FPS) (PSI 1 (PSI 1 49 2675 2745 7.0 52,000 NA Chg 8 M549 145O (Not Applicable) JE See 6.9 NA - Not Applicable NA 57,950 3.8.1 Residue. The propelling charge shall function s
19、atisfac- torily without excessive or smoldering residue (see 6.11). 3.9 Assembly torque. The test screw shall be assembled to withstand subsequent reapplication of the minimum assembly torque specified on the applicable drawing, without moving (see 6.14). 3.10 First article inspection. This specific
20、ation makes provisions for first article inspection. Requirements for the submission of first article samples by the contractor shall be as specified in the contract. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.11 Initial production test (see
21、 6.18). The initial p.roduc- tion test shall be serformed in accordance with Table III before releasing the propeiling charge for field use. 3.12 Workmanship. All par.ts shall be fabricated and assembled in a thorough, workmanlike manner, They shall be free of dents, cracks, excessive adhesives not
22、cleaned from joints and other foreign material. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection and standard quality assurance provisions. Unless otherwise specified herein, the provisions of MIL-A-48078 shall apply and are hereby made a part sf this detail specification. 4.2 Class
23、ifiction of inspections. The following inspection shall be conducted on this material: 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 Officer for evaluat
24、ion in accordance with the provisions of 4.3.2. This sample shall consist of the following: Part Description End, Base Igniter B ase Igniter Assembly Base Igniter Loading Assembly Lead Laminated Rayon Cloth Liner Assembly Strap and Filler Assembly Charge, Propelling, M203A1 for 155“ Howitzer M198 (i
25、n sealed containers) .Drawing 9370161 9370162 9370163 9370160 9378133 9362603 9345103/ 9354642 Quantity 5 5 5 5 5 5 10 4.3.2 Inspections to be performed. The First Article parts submitted in accordance with paragraph 4.3.1 will be subjected by the Government to any or all the requirements of the app
26、licable drawings and specifications and to the inspections of Table II. All inspections listed in Table II shall be classified Major . unless otherwise specified in referenced paragraph and specifications. 4.3.3 Rejection. See MIL-A-48078. MIL-C-70Ltb2C L3 W 77777Ob 0354772 B W MIL-C-70462C (AR) 4 P
27、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a c, m LI .r! Frc H H W ILI -l Ln Ln Ln c c, rlc, om Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-cv 8 hl 6 c z o S a Fi ri m .i . . . . . ._ . . . i.
28、 .- . ri (v cv m M M . . ._ . ._ I Ln I O Ln 4. . c U V) u a, w a, c, 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-C-70462C (AR) 4.4 Quality conformance inspection. 4.4.1 Inspection lot formation. - Inspection lots shall comply with the lo
29、t formation provision of MIL-A-48078. In addition, inspection lots of propelling charge assemblies shall contain: a. Propellant from not more than one lot number. b. Black powder from not more than two lot numbers with the.same interfix number from one manufacturer. (See 6.15). c. CBI powder from no
30、t more than two lot numbers with the same interfix number from one manufacturer. (See 6.15). d. Cases from not more than one interfix number from one manufacturer. 4.4.2 Examination. See MIL-A-48078. a. Sampliriq plans. Unless otherwise specified in the Classification of Defects and Test Tables, sam
31、pling plans for major and minor defects shall be in accordance with MIL-STD-105, Inspection Level II. Continuous sampling in accordance with MIL-STD-1235 may be used if approved by the Government. A Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. N
32、IL-C-70q62C L3 W 7777706 0354776 5 I :rl - . 2 O a W o .; a, u c W a, 4 W 3 8 x3 n o e a rd LI . tn rd U al v) 3 a, n c, O S 2 E - c *I- V L: 3 n m Co n O cl ? L E LL O v) a, fu V n a: al n o h Li7 L E LL O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS
33、-,-,-O 1 u W mg o z u MIL-C-70462C L3 m 7977706 0354777 7 m I . N. NNCV cvrl mmm mm . c4 m ar a u - t. 9 “- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70Yb2C L3 m 7779706 0354778 S m 4 rl m G 5 . . i (u (ucucvm (u I- MMMM M . o. M . O dP O
34、 rl LI W a, QQ Cd o ma, rl 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a - C W a 9: Erl z I S I. MIL-C-70462C 13 W 7779706 0354777 O W :8 .- rl E ff . rl m =I m .FI 3 rl m .m I .ri 3 O dp O dp 0 O dp o O rl: .rl ri -u U O Provided by IHSNot fo
35、r ResaleNo reproduction or networking permitted without license from IHS-,-,-?I rl m P !Y m . 5 -4 m 3 m m . .rl W 3 fl O O rl dl .d A c m c m 2 R LI O 3 LI O O A W O a, u r: a, 5 12 ”* Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-O B H u I3 W II)
36、 PI E w u W R H I4 O L E F I a m a, GI cv (u rl M m . .rl Dl c m c 2 Y 8 c L) 3 in c S a, rl O Dl a J c a a, W O c m .rl Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-rl a, rd mo Ln rl rd 7 m .rl 3 rl mm mm m m . . cv rl m . 14 Provided by IHSNot f
37、or ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70462C 13 M 77777Ob 0354783 2 m e cv QI Ln * . . . cv cv m m . . 03 cvcv m mm . . dl dp O O rl dpdp O0 rlrl irja LI CO m -4: 1450F from 1400F td 1450F; 700F from 68OF to 72OF. Rear tourmaline gages (2) shall be used
38、to measure the maximu.m chamber pressure of each -charge. Copper crusher gages (2) shall be used to measure the maximum chamber pressure of .each charge for information. Velocity coils will be used to measure the muzzle velocity of each charge. Temperature indicator (thermometer) strips shall be -pl
39、aced on the side of all charges or on the side. of the metal containers, as applicable, conditioned at 1450F as a further assurance of the proper .condit.ioning temperature. If -any indicator strip shows the charge has been exposed to a temperature greater than 1450F, that charge will not be fired.
40、4.5.9.1 Muzzle .velocity and muzzle velocity standard devi,ation. Determination of acceptance will be in accordance with MIL-STD-414, Section B, Table B3., AQL of 0.65%. all muzzle velocity and muzzle velocity standard deviation samples will be ballistic tested at 70OF. Fifteen (15) charges wiil be
41、fired for muzzle velocity and muzzle velocity standard devi,ation. If the sample is determined unacceptable the lot will be r.ejected. In addition, if the velocity standards-deviation of the sample multiplied by the factor 0.76 exceeds the-applicable lot requirement, the lot shall be rejected. Fifte
42、en (15) calibration charges will be fired alter- nately with the test samples and the muzzle velocity and pressure of all charges will be corrected to standard conditions. 4.5.9.2 1450F firing. Ten (10) charges will be conditioned and fired at 1450F. Five (5) calibration charges at the same temperat
43、ure will be fired intermixed with the test samples and the muzzle velocity and pressure of all charges corrected to standard conditions. 4.5.9.3 Pressure. 4.5.9 3.1 Individual corrected maximum pressure. If any propelling charge individual corrected maximum pressure exceeds the applicable requiremen
44、t, the lot shall be rejected. 4.5.9.3.2 700 averaqe corrected,pressure. If any propel- ling charge average corrected pressure obtained at 70OF exceeds the applicable requirement, the lot shall be referred to the procuring activities. 4.5.9.4 Residue. All propelling charges fired at different tempera
45、tures in-accordance with- 4.5.9.1 and 4.5.9.2 shall be _. observed for excessive residue and smoldering residue. A test lot Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-az MIL-C-70462C L3 m 7777706 0354773 S 9 MIL-C-70462C (AR) shall be referred t
46、o the procuring activities with a copy of test data forwarded to Commander, Armament Research and Development Center, ATTN: SMCAR-AEE-BP, for disposition whenever any of the following conditions exist: a. Flaming, smoking or smoldering residue in a stationary position on the breech surface, chamber;
47、 or tube surface after the firing pulse. h. Evidence of two or more rounds exhibi-ting excessive residue. (see 6.11.1) 4.5.10 Teardown inspection. Each container and propelling charse will be subjected, to each of the critical (except critical defect 3,-paragraph 4.4. 2.7) and 100 percent mjor (exce
48、pt major defect 101, major defect 102, paragraph .4.4. 2.3; major defect 102, major defect 103, paragraph 4.4. 2. 6; maj-or defect 107, major defect 108, paragraph 4.4.2.7; major defect 102, paragraph 4.4.2.10) inspections defined in 4. 4.2 of this specification. Samples may be accumulated or inspected upon selection providing .the selection remains random and represents the lot. The- inspections will be performed by the contractor and witn-essed by the Gbvernment. The detection of any one of the above defects shall be cause f
