1、I -I MIL-P-63404 li3 = 777770b 0347776 W -_ MIL- P163404(AR ) 11 September 1980 MILITARY SPECIFICATION PROPELLANT M6 FOR USE IN CHARGE, PROPELLING, 155MM, M119A2 4 , This Specification is approved for use by the US Army Armament Research and Development Command, and is available for use by all Depar
2、tments and Agencies of the Department of Defense. .i 1. SCOPE 1. 1 This specification covers M6 Propellant for use in Propelling Charge M119A2 for M199 cannon on HOW, medium, towed: 155MM,-M198 and M185 cannon on SP.How, 155MM: Ml09Al/A2/A3. 2 .- - APPLICABLE DOCUMENTS 2.1 Issues of documents. The f
3、ollowing documents of the issue in effect on date of invitation for bids, or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS MI LI TARY MIL-A-48078 - Ammunition, Standard Quality Assurance Provisions, General Specification for MIL-C-63405 - Char
4、ge, Propelling, 155MM, M119A2, Loading, Assembling and Packing STAJDARDS MIL I TARY MIL-STD-652 - Propellants, Solid, for Cannon, Requirements and Packing *U.S. GOVERNMENT PRINTING OFFICE: 1980-703-02314306 FSC: 1376 Licensed by Information Handling ServicesMIL-P-63404 13-W 9999906 0349797 - T W MIL
5、-P-63404 (AR) DRAWINGS US ARMY ARMAMENTS RESEARCH AND DEVELOPMENT COAMAND 9333954 - Charge, Propelling, 155MM: M119A2 (Copies of specifications, standards, drawings and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activi
6、ty or as directed by the contracting officer). 3 . REQUIREMENTS 3.1 Materials. The propellant shall be M6, conforming to the requirements of MIL-STD-652 and Dwg 9333954. 3.2 Ballistic Assessment Requirements - The propellant, when fired in the M185 cannon with the M107 projectile shall comply with t
7、he following requirements at 70F and standard weapons conditions (see 4.5.1). The propellant shall be capable of assessment to a velocity of 2,251 feet per second (fps) without an associated average pressure less than 26.000 pounds per square inch (psi) or greater than 33,000 psi. 3.3 Ballistic Unif
8、ormity Requirements - The propellant, when fired in the M185 cannon with the projectile (M107), shall comply with the following requirements when tested as specified in 4.5.1.2. All charges (reference, master calibration and test) shall be manufactured in accordance with MIL-C-63405. 3.3.1 velocity
9、for the lot at 70F shall not exceed 6.8 fps. Uniformity of Velocity - The standard deviation of 3.3.2 Individual Maximum Pressure - The propellant shall not produce an individual pressure greater than 41,000 psi at 1450F. 3.3.3 Average Pressure - At 7OoF and standard weapon conditions, the propellan
10、t shall not produce an average pressure greater than 33,000 psi, nor less than 26,000 psi. provisions for initial production inspection. Requirements for the submission of initial production-inspection samples by the contractor shall be as specified in 4.5.1.2.1. 3.4 Initial production. This specifi
11、cation contains 2 Licensed by Information Handling ServicesMIL-P-63404 13 m 7977706 034777 L W - 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 specif
12、ied in 4.3.1. 3.6 Workmanship. 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
13、 otherwise specified, no 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 con
14、tract, the provisions of MIL-A-48078 shall apply and are - hereby made a part of this detail specification. 4.2 Classification of inspection. The following types of inspection shall be conducted on the unit product: a. Preproduction Sample Inspection b. Quality Conformance Inspection 4.3 Preproducti
15、on sample (pilot lots). The preproduction sample 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 b
16、est fit the requirements of this specification. The 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 approximately 1200 lbs each representing the three (3) candidate granulations. 4.3.2
17、 Inspections to be-performed. Each of the pilot lots comprising the preproduction sample and submitted in accordance with 4.3.1 may be,subjected by the Government to any or all of the requirements of this specification. MI L-P-6 3 4 O 4 (AR) - 7OoF, + 2.5OF; 145OF, -5OF. Copper crusher gages (2) sha
18、ll be used to measure the maximum chamber pressure of each charge. Velocity coils will be used to measure the muzzle velocity of each charge. Test charges shall be assembled in accordance with drawing 9333954 and MIL-C-63405. 5 Licensed by Information Handling ServicesL 1 MIL-P-63404 (AR) 4.5.1.1 Ch
19、arqe establishment (see Table 1). 4.5.1.1.1 Charge slope method. Three or more groups of charges loaded with selected charge weights of propellant (weights selected should bracket expected service charge weight) shall be conditioned and fired at 700F. Three calibration charges shall also be conditio
20、ned and fired at 70OF, 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 weight shall then be loaded into charges for the uniformity series (see 4.5.1.2.1) . The difference between the
21、 corrected velocity obtained- during the uniformity series and the service 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 slop
22、e method. After ten (10) lots of a given production series have been 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. A composite charge weight versus velocity
23、 curve and charge weight versus pressure curve can be established from test results generated. 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
24、final adjustment is to be made as indicated above for the charge slope method (see 4.5.1.1.1). The resultant will be the recommended charge weight. After nine consecutive lots of propellant are tested using the constant slope method, the tenth lot shall be tested using the charge slope method. 4.5.1
25、.2 Uniformity (see Table 1) 4.5.1.2.1 Initial Production. Thirty charges shall be assembled with the established charge weight of propellant. Ten rounds each shall be conditioned to -500F, 700F and 145OF (as indicated by thermocoupled control charges or liquid crystal gages). Charges fired at 700F s
26、hall 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). Firing results at all temperatures shall be corrected to recommended charge weight condi
27、tions (i.e. the difference between 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. 6 Licensed by Information Handling Services7 MIL-P-b3404 13 9 77797Ob. O
28、349802 T 9 MIL-P-63404 (AR) 4.5.1.2.2 Subsequent - production. Ten (10) charges shall be assembled and tested at 70F, fired alternately with calibration charges. The means and standard deviations of the velocity and pressure shall be calculated on resuts corrected to standard conditions and recommen
29、ded charge weight. If any individual pressure exceeds the 7OoF individual maximum pressure control (see 4.4.2.5.2), ten additional test charges shall be conditioned and fired at 145OF. All results at 145OF shall be corrected to recommended charge weight. If any individual charge at 145OF exceeds 41,
30、000 psi, the lot shall be rejected. 4.5.1.3 Retest criteria. A lot shall be retested whenever any of the following conditions exist or whenever the proving ground deems it necessary. a. The final adjustment in charge weight exceeds 6.0 ozs of the charge weight used in uniformity firings, retest for
31、uniformity in accordance with 4.5.1.2. b. If for any reason, the Proving Ground considers that test conditions have detrimentally affected the test results, additional charges as required shall be tested. 4.5.1.4 Referral criteria. A test lot shall be referrred to the procuring activity for disposit
32、ion whenever any of the following conditions exist or whenever the proving ground deems it necessary. a. Calibration charges fired in any test phase fail to comply with Section 3 of this specification. b. Calibration correction applied exceeds two percent of the expected muzzle velocity. c. Calibrat
33、ion components are not available. d. Number of test or calibration results utilized in calculations is less than specified. 7 Licensed by Information Handling ServicesMIL-P-63404 I3 W 9999906 0349803 I W - MIL-P-63404 (AR) . e. Any unusual occurrences during ballistic testing, such as excessive dela
34、ys between rounds, poor projectile flights, etc. Each such event shall be reported in detail on the applicable firing record. f. Test lot fails velocity standard deviation or average pressure requirement at 70F and any extreme test value is an outlier. a single test result -is an outlier. With a sam
35、ple size of 10 at a significance level of 0.05, the critical value (TC) is 0,477. Calculate a test value (Tt) as follows: The following test shall be performed to determine if Where: For Low Outlier For High Outlier X1 = test result being “ested as low outlier X2 = test result adjacent to Xl, after
36、all the test results are ordered from smallest to largest x9 = test result adjacent to the largest test result X10 = test result being tested as high outlier XI or X1o is an outlier if Tt is greater than 5. PACKAGING TC 5.1 Packing and marking. Packing and mar,ing shall de in accordance with MIL-STD
37、-652, except that all propellant designated for use as reference shall be packed level A, 6. NOTES 6.1 Ordering data. Ordering data shall be in accordance with MIL-A-48078 with the following exceptions: 6.1.1 Procurement requirements. Procurement requirements of MIL-A-48078 shall apply. 8 Licensed b
38、y Information Handling ServicesMIL-P-63404 13 U 7977706 0347804 3 U MIL-P-63404 (AR) 6.1.2 Contract data requirements. One copy each of the Propellant Description Sheet and thecceDtance Test Summarv shall be forwarded to each office designated by the contracting officer. contractor in connection wit
39、h specific procurement functions should be obtained from the procuring activity. Copies of data item descriptions required by the 6.2 Proving ground test summary (see Table 1) . 6.3 Drawings. Drawings listed in Section 2 of this specification under the heading US Army Armament Research and Developme
40、nt Command (ARRADCOM) may also include drawings prepared by, and identified as, Edgewood Arsenal, Frankford Arsenal, Rock Island Arsenal or Picatinny Arsenal drawings. Technical data originally prepared by these activities is now under the custodianship of ARRADCOM. 6.4 Surveillance sample. Samples
41、shall be forwarded to US Army Armament Research and Development Command, Dover, NJ 07801, ATTN: DRDAR-LCE-MP for the propellant surveillance test program in accordance with MIL-STD-652. - 6.5 Initial production lots. The initial production lots represent the first ten consecutive lots from each manu
42、facturer which have been produced and met the acceptance criteria of the specification. Throughout production, if 3 consecutive lots fail on first test, testing shall revert back to the initial production plan. Lapse in production of 90 days or more shall cause testing to revert back to intial produ
43、ction plan. 6.6 Muzzle velocity and muzzle velocity standard deviation. velocity of 2245 fps with the M549 RA projectile family in an This requirement is based on obtaining a nominal - - M199 cannon at zone 7. 6.7 Individual maximum pressure. Individual maximum - pressure specified in 3.3.2 is based
44、 on firins an M107 projectile loaded to an as fired weight of 95,O lbs. change in weight or projectile will require an adjustment of this pressure requirement . Any 9 Licensed by Information Handling ServicesL - I Y 2 zp O 6i m 10 I 9 E c MIL-P-63404 13 m 77777Ob 0349805 5 O o Is m 9 I O0 O0 cDm 99
45、mm s rl m (v (v m m O CI s s O rl c O m I O O O f-4 zp c O rl 4 c c m 9 rl + A rl 8 8 .FI U a i I-I .r( U -rl C H c m Licensed by Information Handling ServicesI _d MIL-P-63404 13 aii 7777706 0347806 7 ml - MIL-P-63404 (AR) PREPARING ACTIVITY: ARMY-AR PROJECT NUMBER: 1376-Al57 CUSTODIAN: ARMY-AR 11 Licensed by Information Handling Services
