1、I c- MIL-P-70539 I3 W 9997706 0355bq4 q Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improv- ing this document should be addressed to: Commander, US. Army Armament Research, Development and Engineer- ing Center. Attn: AMSMC-QA, Dover, New
2、Jersey 07801-5001 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. i MIL-P-70539 (AR) 21 MARCH 1986 MILITARY SPECIFICATION PROPELLANT M30 FOR USE IN CHARGE, PROPELLING, 105MM, M200 This specification is appro
3、ved for use by the US Army Armament Munitions and Chemical Command, and is available for use by all Departments and Agencies of the Department of Defense. i c 1. SCOPE 1.1 Scope. This specification covers M30 Propellant for use in the M200 Propelling Charge. 1.2 Classification. The propellant shall
4、be Type I, cylindrical, multi-perforated grains. 2. APPLICABLE DOCUMENTS 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 Sta
5、ndards (DoDISS) specified in the solicitation, form a part of this specification to the extent spec if ied herein . SPECIFICATIONS MILITARY MIL-A-48078 - MIL-C-48360 - Ammunition, Standard Quality Assurance Provisions, General Specification for Charge, Propelling, M200, For 105MM, Howitzer M119, Loa
6、ding, Assembling and Packing AMSC N/A FSC 1376 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. 7 THIS DOCUMENT CONTAINS !/ PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70537 L3 U 7777906 0355645 b M M
7、IL-P-70539 (AR) STANDARDS MILITARY MIL-STD-414 - Sampling Procedures and Tables for Inspection by Variables for Percent Defective MIL-STD-652 - Propellants, Solid for Cannons, Requirements and Packing 2.1.2 Other Government documents, drawinqs and publications. The following other Government documen
8、ts drawings and publications form a part of this specification to the extent specified herein. DRAWINGS US ARMY RESEARCH DEVELOPMENT AND ENGINEERING CENTER (ARDEC) 9282042 - Charge; Propelling M200 Loading Assembly 9289185 - Cartridge 105MM, HE, M760 with M200 Propelling Charge, 105MM Howitzer M119
9、Loading and Assembly (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.) 2.1.3 Order of precedence. In the
10、event of a conflict between the text of this specification and the reference cited herein, the text of this specification shall take precedence. 3. REQUIREMENTS 3.1 Material. The propellant shall be M30, Type I conforming to the requirements of MIL-STD-652 and Drawing (Dwg) 9282042. 3.2 Ballistic as
11、sessment requirements. The propellant when fired in the L20A1 Tube with the M1 projectile (see 4.5) shall comply with the following requirements;-at 70 degrees Fahrenheit (OF) and standard weapon conditions. The propellant shall be capable of assessment to a velocity of 2020 + 25 feet per second (fp
12、s) with an expected average pressure not to exceed 46,500 pounds per square inch (psi) and a charge weight not to exceed 73 ounces (oz) as determined in 4.5.1.1. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L ,- - - - MIL-P-70539 13 m 9999906 03
13、55646 m MIL-P-70539 (AR) I fired in the L20A1 Tube with the M1 projectile (see 4.5.1) shall comply with the following requirements when tested as specified in 4.5.1.2. I 0 i 3.3.1 Uniformity of velocity. The standard deviation of velocity for the lot at 700F shall not exceed 8.0 fps. 3.3.2 Averaqe p
14、ressure. At 700F and standard weapon a conditions, the propellant shall not produce an average pressure I 3.3.3 Individual maximum pressure (IMP). The propellant greater than 46,500 psi. shall not produce an individual pressure greatet than 57,000 psi when fired at 1450. 3.4 Initial production. This
15、 specification contains provisions for initial production inspection. Requirements for the submission of initiai 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. Requi
16、rements for the submission of preproductiun inspection samples by the contractor shall be as specified in 4.3.1. 3.6 WorkmanshiE. The best commercial practices shall be used in the formulation of propellant furnished under this specification, and all other applicable documents. The propellant and it
17、s standard ingredients shall be protected from the action of direct sunlight and acid fumes. Unless other specified, no reground propellant or nitrocellulose shall be used in the manufacture of propellant procured under this specification. (b 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for in
18、spection and standard quality assurance provisions. Unless otherwise specified herein or in the contract, the provisions of 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 o
19、f all inspection requirements as specified herein. Except as otherwise specified in the contract, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements, specified herein, unless disapproved by the Government. The Government reserves the ri
20、ght to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70539 13 W 99
21、99906 0355647 T H MIL-P-70539 (AR) 4.2 Classification of inspections. The f.llowing types of inspection shall be conducted on the unit product: a. Preproduction Sample Inspection b. Quality Conformance Inspection. 4.3 Preproduction sample (pilot lots). The preproduction sample is intended to provide
22、 the necessary information to establish the propellant granulation needed to meet the required ballistic parameters. 4.3.1 Submission. The Contractor shall select propellant granulations for approval by Government Engineering and Product Assurance, which, from experience, are expected to bracket the
23、 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, usually consisting of up to three pilot lots of approximately 3000 lb each, representing each of the candidate granulations. 4.3.2
24、 Inspections to be performed. Each of the pilot lots comprising the preproduction sample and submitted in accordance with 4.3,l may be subjected by the Government to anyor all of the requirements of the applicable drawings and specifications. 4.3.3 Rejection. Government Engineering and Product Assur
25、ance personnel and the Contractor shall review the pilot lot test data and shall select a granulation which best fits the requirements of this specification. The Technical Agency shall notify the Contracting Officer of the selected granulation. The Contracting Officer shall designate the preproducti
26、on sample as acceptable and shall authorize the Contractor to produce the selected granulation for regular production. If the pilot lots submitted fail to meet or bracket the requirements of this specification, a new preproduction sample shall be submitted in accordance with 4.3.1. Until the preprod
27、uction sample is designated acceptable, the Contractor is in no way authorized by the Government to initiate regular production, unless otherwise directed by the Contracting Officer. A11 future production lots should be of the same basic granulation as the selected granulation authorized for regular
28、 production. 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 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70537 13 m 7777706 0355b11 L m MIL
29、-P-70S39 (AR) 4.4.2 Examination and testiriqi PRECAUTION - This specificatiori covers sampling and testing of chemical, toxic or explosive materials which are potentially hazardous to personnel. Accordid$iY, it is emphasized that all applicable safety rules, regulations and procedures must be follow
30、ed in handling and processing these materials. . 4.4.2.1 Sampling for laboratory testing (see 3.1). Each lot of propellant shall be sampled and testd for composition form, dimensions and chemical/physical properties in accordance with MIL-STD-652. (see 6.4) 4.4.2.2 Samplinq for baliistic testing (se
31、e 3.2). Each lof of propellant shall be cambled for Proving Ground tests in accordance with MIL-STD-652. 4.4.2.3 Charqe establishment (see 3.2) If the lot does not meet the applicable requirements, testing shall cease and the Test Director shall immediately not if y the procuring activity . 4.4.2.4
32、Velocity uniformity (7O0F) (see 3.3.1). If the product of the factor (-73 for initial production, .69 for subsequent production) times the velocity standard deviatin of the rounds tested in accordance with 4.5.1.2 exceeds the applicable requirement, apply refkral criteria in accordance with 4.5.1.4.
33、 shall be rejected. The factor makes allowande for the probability that a standard deviation from a sri-igller sample size xceeds th true standard deviation by chance Alone. The standard deviation shall be calculated with (n-i) as the divisor in a standard statistical technique equivalent to that sh
34、own in NIL-STD-414. If the referral criteria cited do not apply, the lot 4.4.2.5 Averaqe pressure (see 3.3.2). If the dveragg pressure obtained exceeds the applicable re uireirlents, apply criteria cited do not apply, the lot shall b- irejectede any individual pressure observed during the uniformity
35、 kkies, when corrected to standard conditions and recommended 70F, + 2.50F, 1450F, -50F. 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 velocity of each charge. Test charges shall be assembled in accord
36、ance with drawing 9282042 and MIL-C-48360. 4.5.1.1 Charqe establishment (see Table I) 4.5.1.1.1 Charge slope method. Three or more groups of rounds loaded with selected charge weights of propellant (weights selected should bracket expected service charge weight) shall be conditioned and fired at 7OO
37、F. Three calibration rounds shall also be conditioned and fired at 700F, prior to the test rounds. 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 rounds for the uniformity
38、 series (see 4.5.1.2). The difference between the 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 re
39、commended charge weight . 4.5.1.1.2 Constant slope 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
40、method. A composite charge weight versus velocity 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 l
41、oaded into charges for the uniformity series and final adjustment is to be made as indicated above for the charge slope method (see 4.5.1.1.1). The resultant will be the recommended charge weight. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I M
42、IL-P-70539 13 m 999770b 0355b50 T i t i i t MIL-P-70 53 9 (AR) 4.5.1.2 Uniformity (See Table I). 4.5.1.2.1 Initial production. Thirty (30) charges shall be e assembled with the calculated charge weight (see 4.5.1.1.1) of propellant. Ten charges each shall be conditioned to -GOOF, 700F, and 1450F (as
43、 indicated by thermo-coupled control charge). Charges fired at 700F shall be fired alternately with calibration charges and shall be corrected to standard shall be corrected to standard projectile weight (see 4.5.1) and to recommended charge weight conditions (i.e., the difference between calculated
44、 (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 usinq corrected results. The initial production lots represent the first three consecutive lots from each manufacturer which have
45、 been produced and met the acceptance criteria of this spec i f i cat i on . a weapon/firing conditions. Firing results at all temperatures 4.5.1.2.2 Subsequent production. Fourteen (14) charges shall be assembled with the established charse weisht of propellant. 1450F (as indicated by thermocoupled
46、 control round). Charges fired at 70OF 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). Firing results at both temperatures shall be co
47、rrected to standard projectile weight (see 4.5.1) and to recommended charge weight conditions (i.e., the difference between as fired charge weight and recommended charge weight). The means and standard deviations of the velocities and pressures at both firing temperatures shall be calculated using c
48、orrected results. Seven charges each shall be conditioned to 700F and e 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 1.0 ozs of the charge weight use
49、d in uniformity firings, retest for 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. the procuring activity for disposition whenever any of the following conditions exist or whenever the proving ground deems it necessary. 4.5.1.4 Referral criteria. A test lot shall be referred to 7 / t Provided by IHSNot for ResaleNo reprod
