1、H 2f- 4- MIL-P-604LbA 13 7797706 0338328 8 MIL-P-60416A (AR) 23 MARCH 1982 SUPERSEDING MIL-P-60416 (MU) 20 December 1966 MI LI TARY SPEC I FI CAT ION PROPELLANT M1 FOR USE IN CHARGE, PROPELLINGI 155MM, M3A1 This specification is approved for use by the US Army Armament Research and Development Comma
2、nd, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification covers M1 Propellant for use in the M3A1 Propelling Charge. 1.2 Classification. The propellant shall be Type II, cylindrical, single-perfor-ated grains. 2. APPLICABLE DOCUMENTS
3、2.1 Government documents 2.1.1 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 (DoDISS) specified in the solicitation, form a part of this specifi
4、cation to the extent specified herein. SPECIFICATIONS MI LI TARY MIL-A-48078 - Ammunition, Standard Quality Assurance Provisions, General Specification for -, FSC: 1376 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improvin this document sh
5、ould be addressed to: Commander, US Army Armament fiesearch and Develo ment Command, Attn. DRDAR-QA, Dover, New Jersey 07801 by using tie self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. f- THIS DOCUMENT CONTAINS ,/A PAGE
6、S. I I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. -. MIL-P-6041bA 13 997770b O338329 T M MIL-P-60416A (AR) MIL-C-60418 - Charge, Propelling, 155MM, M3A1 Loading, Assembling and Packing STANDARDS MILITARY MIL-STD-286 - Propellants, Solid: Sampl
7、ing, Examination And Testing MIL-STD-414 - Sampling Procedures and Tables for Inspection by Variables for Percent Defect i ve MIL-STD-652 - Propellants, Solid for Cannons, Requ i rememen ts and Pack ing 2.1.2 Other government documents, drawings and publications. The following other Government docum
8、ents form a Part of this specification to the extent specified herein. DRAWINGS U.S . ARMY ARMAMENT RESEARCH AND DEVELOPMENT COMMAND (ARRADCOM) 8887277 - Charge, Propelling, 155MM, M3A1 for Cannon M1, M45, M126, M185,M199 2.1.3 Order of precedence. In the event of a conflict between the text of this
9、 specification and the references cited herein, the text of this specification shall take precedence. (Copies of specifications, standards, handbooks, drawings and publications required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activit
10、y or as directed by the contracting officer.) 3. REQUIREMENTS ! I 3.1 Material. The propellant shall be M1, Type II conforming to the requirements of MIL-STD-652 and Drawing (Dwg) 8887277. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-bOqLb
11、A 13 m 77777Ob 0338330 b m MIL-P-60416A (AR) 3.2 Ballistic assessment requirements. The propellant, when I fired in the M1 cannon with the M107 projectile shall be capable of assessment to the velocities and pressures at 70F as specified in Table I. TABLE I Velocity and Pressure zone - 1 A Velocity
12、(fps) 680 770 900 1040 1230 Average Pressure (psi) Mi n imum Maximum 18,000 28,000 3.3 Ballistic uniformity requirements. The propellant, when fired in the M1 cannon with the M107 projectile shall comply with the following requirements when tested as specified in 4.5.1.2. ll charges shall be manufac
13、tured in accordance with MIL-C-60418. 3.3.1 Uniformity of velocity. The standard deviation of velocity for the lot at zone 5 at 70F shall not exceed 3.0 feet per second. 3.3.2 Averaqe pressure. At 70F and standard weapon conditions, the propellant shall not produce an average pressure greater than 2
14、8,000 psi at zone 5. 3.3.3 Individual maximum pressure (IMP). The propellant shall not produce an individual pressure greater than 30,500 psi when fired at 70F. 3.4 Initial production. This specification contains provisions for initial production inspection. Requirements for the submission of initia
15、l production inspection samples by the contractor shall be as specified in 4.5.1.2.1. 3.5 Preproduction inspection. This specification contains provisions for preproduction inspection. Requirements for the submission of preproduction inspection samples by the contractor shall be as specified in 4.3.
16、1. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P- 60 4 16A (AR) 3.6 Potassium sulfate. The total potassium sulfate content of the propellant on an added basis shall be 1.00 + 0.30 percent when determined as specified in 4.5.2. - 3.7 Workman
17、ship. The best commercial practices shall be used in the formulation of propellant furnished under this specification, and all other applicable documents. The propellant and its standard ingredients shall be protected from the action of direct sunlight and acid fumes. Unless otherwise specified, no
18、reground propellant or nitrocellulose shall be used in the manufacture of propellant procured under this specification. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection and standard quality assurance provisions. Unless otherwise specified herein or in the contract, the provisions of
19、 MIL-A-48078 shall apply and are hereby made a part of this detail specification. Unless otherwise specified in the contract, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract, the contractor may use hi
20、s own or any other facilities suitable for the performance of the inspection requirements, specified herein, unless disapproved by the Government. of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requi
21、rements . inspection shall be conducted on the unit product: The Government reserves the right to perform any 4.2 Classification of inspections. The following types of a. Preproduction Sample Inspection b. Quality Conformance Inspection 4.3 Preproduction sample (pilot lots). The preproduction sample
22、 is intended to provide the necessary information to establish the propellant granulation needed to meet the required ballistic parameters. 4.3.1 Submission. The Contractor shall select three (3) propellant granulations which, from experience,should best fit the requirements of this specification. T
23、he contractor shall submit a preproduction sample as designated by the Contracting Officer for evaluation in accordance with 4.3.2, consisting of three (3) pilot lots of 1000 lbs to 1200 lbs each representing three (3) candidate granulations. 4 Provided by IHSNot for ResaleNo reproduction or network
24、ing permitted without license from IHS-,-,- MIL-P-b0qLbA 13 777770b 0338332 T H MIL-P-60416A (AR) t 4.3.2 pvalua tion. Each of the pilot lots submitted per 4.3.1 will be tested for conformance to those specification requirements selected by the Government. the test results by the contractor and the
25、Government, the Contracting Officer, after considering the recommendations of the Contractor, will notify the Contractor as to the granulation selected for production. If none of the pilot lots submitted meets the requirements of this specification, a new preproduction sample to be submitted per 4.3
26、.1 will be requested by the Contracting Officer. Following analysis of 4.4 Quality conformance inspection 4.4.1 Inspection lot formation. Inspection lots shall comply with the lot formation provisions of MIL-A-48078. 4.4.2 Examination and testinq. PRECAUTION - This specification covers sampling and
27、testing of chemical, toxic or explosive materials which are potentially hazardous to personnel. Accordingly, it is emphasized that all applicable safety rules, regulations and procedures must be followed in handling and processing these materials. 4.4.2.1 Sampling for laboratory testing (see 3.1). E
28、ach lot of propellant shall be sampled and tested for composition, form, dimensions and chemical/physical properties in accordance with MIL-STD-652. (see 6.4). 4.4.2.2 Sampling for ballistic testing (see 3.2). Each lot of propellant shall be sampled for Proving Ground tests in accordance with MIL-ST
29、D-652. 4.4.2.3 Charge establishment (see 3.2). If the lot does not meet the applicable requirements, testing shall cease and the Test Director shall immediately notify the procuring activity. 4.4.2.4 velocity uniformity (70O) (see 3.3.1). If the product of the factor (.72 for initial production, .69
30、 for subsequent production) times the velocity standard deviation of the rounds tested in accordance with 4.5.1.2 exceeds the applicable requirement, apply referral criteria in accordance with 4.5.1.4. If the referral criteria cited do not apply, 5 Provided by IHSNot for ResaleNo reproduction or net
31、working permitted without license from IHS-,-,-MIL-P-hO16A 13 777970b 0338333 I = MIL-P-60416A (AR) the lot shall be rejected. The factor makes allowance for the probability that a standard deviation from a smaller sample size exceeds the true standard deviation by chance alone. The standard deviati
32、on shall be calculated with (n-1) as the divisor in a standard statistical technique equivalent to that shown in MIL-STD-414. 4.4.2.5 - Average - pressure (see 3.3.2). If the average pressure obtained exceeds the applicable requirement, apply referral criteria in accordance with 4.5.1.4. If the refe
33、rral criteria cited do not apply, the lot shall be rejected. any individual pressure observed during the uniformity series, when corrected to standard conditions and recommended charge weight, exceeds the applicable requirement, the lot shall be rejected. 4.4.2.6 fndividual maximum pressure (IMP) (s
34、ee 3.3.3) . If 4.5 4.5.1 Proving ground assessments. This test shall be performed at a Government Proving Ground in accordance with the applicable acceptance test procedure using M107, HE projectiles inert loaded within 0.01 lb of an as fired weight of 95.0 lb using Primer, Percussion, MK2A4, and fi
35、red in an M1 Cannon with 50 percent (minimum) remaining life. All charges shall be temperature conditioned in a large conditioning box, with adequate air circulation to assure uniform conditioning, at the required temperature for a minimum of 24 hours and assurance will be made that, when fired, the
36、 charges are at the conditioning temperature. The following tolerances shall apply to all temperature conditionings: -500F, +s0F; 700F + 2OF; 145OF, -5OF. Copper crusher gages (2) shall be-used to measure the maximum chamber pressure of each charge. Velocity coils will be used to measure the muzzle
37、velocity of each charge. Test charges shall be assembled in accordance with drawing 8887277 and MIL-C-60418. - Test methods and - procedures - 4.5.1.1 Charge establishment (See Table II) 4.5.1.1.1 Charge sl9e method. Charges loaded with selected chargexgLt%of-proT%ant for zones 1, 2, 3, 4, 5 and 5+
38、shall be conditioned and fired at 700F. Five calibration charges at zones 1, 2, 3, 4 and 5 shall also be conditioned and fired at 70F, with the test charges. From the data obtained, a charge weight shall be calculated which will yield the prescribed service velocity (see 3.2). This calculated charge
39、 weight shall then be loaded into charges for the uniformity series (see 4.5.1.2.1). The difference between 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-6 O 4 16A (AR) the corrected velocity obtained during the uniformity series and the se
40、rvice velocity shall be compensated for by a final adjustment in charge weight using the slope of the velocity charge weight curve previously established. The resultant will be the recommended charge weight. 4.5.1.1.2 Constant slope method. After ten (10) lots of a given production series have been
41、fired to provide a good knowledge of the propellant characteristics, the charge slope method of assessment may be discontinued and the charge weight determined by the constant slope method. weight versus velocity curve and charge weight versus pressure curve can be established from test results gene
42、rated. This curve can then be used as in 4.5.1.1.1 to calculate the charge weight needed to achieve service velocity. This calculated charge weight is then to be loaded into charges for the uniformity series and final adjustment is to be made as indicated above for the charge slope method (see 4.5.1
43、.1.1). The resultant will be the recommended charge weight. A composite charge 4.5.1.2 Uniformitv (see Table II) 4.5.1.2.1 Initial production. Thirty (30) charges shall be assembled wim-thecaElafedcharge weight (See 4.5.1.1.1) of propellant at zone 5. Ten charges each shall be conditioned to -50F, 7
44、0F and 145OF (as indicated by thermo-coupled control charge). Charges fired at 700F shall be fired alternately with calibration charges and shall be corrected to standard weapon/firing conditions. Firing results at all temperatures shall be corrected to standard projectile weight (see 4.5.1) and to
45、recommended charge weight conditions (i.e., the difference between calculated (as fired) charge weight and recommended charge weight). The means and standard deviations of the velocities and pressures at all firing temperatures shall be calculated using corrected results. The initial production lots
46、 represent the first three consecutive lots from each manufacturer which have been produced and met the acceptance criteria of this specification. 4.5.1.292 Subsequent production. Seven (7) charges shall be assembled with the estabished-charge weight (see 4.5.1.1.2) of propellant. Each charge shall
47、be conditioned to 700 (as indicated by thermo-coupled control round). Test charges shall be fired alternately with calibration charges and shall be corrected to standard weapon/firing conditions (i.e.? the difference between calibration performance under test conditions and standard conditions). Fir
48、ing results shall be corrected to standard projectile weight (see 4.5.1) and to . 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-bO4LbA 13 m 799790b 0338335 5 m MIL-P-60416A (AR) recommended charge weight conditions (i.e.8 the difference bet
49、ween as fired charge weight and recommended charge weight). The means and standard deviations of the velocities and pressures shall be calculated using corrected results. Throughout production, if 3 consecutive lots fail on first test, testing shall revert back to the initial production plan (see 4.5.1.2.1). 4.5.1.3 Retest criteria. A lot shall be retested whenever any of the following conditions exist or whenever the prov
