1、MIL-P-63537 33- 7779906 0353533 LI W H- 2s - %J- MIL-P-63517 (AR) 27 June 1983 . MILITARY SPECIFICATION PROPELLANT E14 FGR USE IN CARTRIDGE, l05MM TP-T, Ni490E1 This specificstion is apprcved fcr use by the US Amy Armanent Research ad Developmer!t CommanZ, a.nd is sivailable for USE: by all Departme
2、nts ai23 Ager?cies of the Department of Defense. 1 SCOPE 1.1. Sccpe This specification covers the requirements, guality assurance provisions, ana packaging of M14 Propellant for use in the Cartridge TP-T, M490E1 for the 105W1, MG8 Gun. 1.2 Classification, The propellant.shal1 be Type I Cylindrical M
3、ulti-Perforated grains. 2. APPLICABLE DOCUMENTS I. 2.1 Government documents. 2.1.1 Specifications .and standards. Unless otherwise specifiei! (see 6.1) the following specifications and standarss of issue listed in that issue of the Department of Defense Index of Specifications and Standares (DODISS)
4、 specified in the solicitiaticn, form a part of this specification to the extend specified hereir,. SPEC IF I CAT IONS MILITARY MIL-A-48078 - Axrmunition, Standard Quality Assurance Provisions, General Spcificaticn for r / P.Sc? ,1376 THIS DOCUMENT CONTAINS II PAGES. Beneficial comments (recommendat
5、ions, additions, deletions) and any pertinent data which may be of use in improvin this document should be addrLuaed to: Commander, US Army Armament fesearch and Develo ment Command, Attn. DRDAR-QA, Dover, New Jersey 07801 by using tie self-addTessed Standardization Document Improvement Proposal (DD
6、 Form 1426) appearing at the end of this document or by letter. I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-63537 33 W 9999906 0353532 6 W P 8. MIL-P-63517 (AR) s TANDARDS MILITARY MIE-STD- 286 -P Popellants, S cli d, S amp1 i ng MI I4 -*
7、s TE)- 4 il. 4 Examination and Testing -Sampling Procedures and Tables for Inspection by Variables for percent defective MIL-STB-652 -Propellants, Solid, for Cannons, Requirements and packing , 2. I. 2 Other -lierit documents, drawinqs and - pubPPeatAons, specification t the extent specified herein.
8、 The following drawings form a partf this DRAWINGS (see 6.3) US ARMY ARMAMENT RESEARCH AND DEVELOPMENT COMMAND 9343010 -Case Cartridge and Liner 9329792 -Projectile, 105MM, TP-T, Assembly 1.05MM M148AlB1 I. M489E1 Metal Parts Assembly 9343009 -Cartridge, 105mm, TP-T, M490E1 (Copies o specifications,
9、 standards, drawings and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as di.rected by the contracting officer .) 2.l.3 Order of precedence. In the event of a conflict between the text cf this specification an
10、d the references cited herein, the tyxt of this specification shall take precedence. . 3.1 Material. The .propellant shall be M14 Type I, conform- ing to the requirements-of MIL-STD-652 except for the following: 3.1.1- Grain length .to 6iameter ratic. The average grain length (L) shall befrsm 1.90 t
11、o 2.10 ti%es the average grain diameter (D) e 1 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-P-63517 13 W 777770b 0352533 MIL-P-63517 (AR) 3.1.2 Grain diameter to perforation diameter ratio. The average grain diameter (D) shall be from 11.0
12、 to 14.0 times the average diameter of the perforation (a). 3.1.3 Web. The nominal web sizes shall be .O50 inch (in.). 3.1.4 Bulk density; The nominal bulk density shall be 55.3 pounds per cubic foot (lb/ft3) (See 4.5.2). 3.1.5 Total volatiles. The total volatiles content of the finished propellant
13、shall be a maximum of 1.9% (see 4.5.3). 3.2 Ballistic assessment requirements. The propellant when fired in the M68 Gun with the M490E1 projectile shall comply with the following requirements at 70 degrees Fahrnheit (see 4.5;l) and standard weapon conditions (see 6.6). The propellant shall be capabl
14、e of assessment to a velocity of 3850 feet per second (fps) with an expected average pressure not to exceed 58,700 pounds per square inch (psi) and a charge weight not to exceed 199 ounces. (9) 3.3 Ballistic uniformity requirements. The propellant when fired in the with the following requirements. 6
15、8 Gun with the M490E1, projectile-shall comply 3.3.1 Uniformity of velocity. The standard deviation- of I. velocity for the lot at 70- shall not exceed 7.8 -fps. 3.3.2 Averaqe pressure. At 70?F and standard weapon con- ditions, the propellant shall not produce an average pressure greater than 58,700
16、 psi. At 125q and standard weapon condi- tions, the propellant shall not produce an average pressure greater than 68,600 psi. 3.3.3 Individual maximum pressure (IMP) The propellant shall not produce an individual pressure greater than 73,900 psi or an avergge pressure. plus three (3) standard deviat
17、ions greater than 71,500 psi at 125w. 3.4 Preproduction inspection. This specification contains provisions forrpreproductioninspection. Requirements for the submission of.preproduction inspection samples shall be as specified by the Contracting Officer. used in the formulation of propellant furnishe
18、d 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. 3.5 Workmanship. The best commercial practices shallbe e 3 4 Provided by IHSNot for ResaleNo reproduction or networking pe
19、rmitted without license from IHS-,-,-MIL-P-63517 (AR) Unless otherwise specified, no reground propellant or nitrocellulose shall be used in the manufacture Of propellant procured under this specification. 4. . QUALITY ASSURA.NE PROVISIONS 4.1 Responsibility for inspection and standard qualit as,sura
20、nce- provisions. the contract, the provisions of MIL-A-48G78 shall apply and are hereby mad-e a part of this detail specifkcation. - Unless otherwze specified heaein o? in 4.2 Classification of in,spections. Preproduction Sample Inspection and Quality Conformance Inspection shall be conducted on thi
21、s item. 4.3 Preproduction sample (pi,lot l,o.ts),. The preproduction sample is-intendecf to provise necessary ballistic information to establish the propellant granulation needed to meet the required ballistic parameters. 4.3.1 Cubmission. The Contractor shall select up to three propellant granulati
22、ons which, from experience, are expected to bracket the requirements of this specification. The contractor shall submit preproduction sample as designated by the Contracting Officer far evaluation in accordance with 4.3.21 consisting of up to three pilot lots of a maximum of 3000 lb. I each, represe
23、nting the canPidate granulations. granulations comprising the preproduction sample and subnitted in accordance with 43.3 may be subjected by the Government to any or all of the requirements of the applicable drawings and specifications. 4.3.2 Inspections to be pejformed. Each of the 4.3.3 Rejection
24、- Government Engineering and Product Assurance personnel and the Contractor shall review the pilot lot test data and shall select a granulation size which best fits the requirements of this specification. The Technical Agency s.ha11 notify the Contracting Officer of the selected granulation. The con
25、tractor shall reuuest approval from the Contracting Officer to produce the selected granulation. If none of the pilet lats submitted meets the requirements of this specification, a new. preproduction sample shall be submitted in accordance with 4.3.1. All futuie productior! lots shall be of the same
26、 basfc granulation. +I. 4 7 i , I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-t MIL-P-63517 (AR) 4.4 Quaiity conformance inspection: 4,4.1 Inspection lot formation. Inspection lots shall comply with the lot formation provisions of MIL-A-48078. 4.
27、4.2 Examination and testinq. PRECAUTION - This specification covers sampling and 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
28、 processing these materials. 4.4.2.1 Samplinq for laboratory testinq (see 3.1). Each 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 and 6.5). 4.4.2.2 Sampling for ballistic testing (see 3.2). E
29、ach lot of propellant shall be sampled 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 notify the procuring activity and the technical a
30、gency. _ 4.4.2.4 Velocity uniformity (see 3.3.1). If the product of the factor 0.73 times the velocity standard deviation of the rounds tested in accordlance 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 app
31、ly, the lot shall be rejected. 4.4.2.5 Averaqe 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 referral criteria cited do not apply, the lot shall be rejected. 4.4.2.6 Individual Maximum Pressure (I
32、MP). f 4.4.2.6.1 If any individual pressure observed during the 1259.uniformity series, when corrected to standard conditions, recommended charge weight, and standard projectile . weight exceeds the appli,cable requirement, the lot shall be, rejected. 4.4.2.6.2 If th.e. average pressure at 1.259 plu
33、s three standard deviations exceeds the applicable requirement, app_ly ir referral criteria in accordance with 4.5.1.4. If the regerra1 criteria cited do not apply, the lot shall be rejected. _- o 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
34、-P-635L7 13 777770b 0353536 3 MIL-P-63517 (AR) 4.5 Test methods and procedures 4.5.1 Proving ground assessments. These tests shall be conducted at a Government Proving Ground (designated by the contracting officer) in accordance with the applicable Proving Ground Acceptance Test Procedure. Tubes use
35、d for these assessments shall. be restr,icted to fire only High Exphcive Anti-Tank with Tracer (HEAT-T) ammunition. The wear of the tube shall be no greater than 0.015 inch when measured 25.25 inches from the rear of the tube. All test rounds shall be temperature conditioned in a large conditianing
36、box, with adequate air circulation to assure uniform conditioning, at the required temperature for a minimum of 24- haurs and assurance will be made that, when* fired, the chaiges are at the conditioning temperature. The following tolerances shall apply to all temperature conditionings: -50% +5*; 70
37、% - +2.5?E; 125w -59 and 1459 -5OF. Copper crusher gages (2) shall be. used to measure the maximum chamber pressure. Test and calibration rounds shall be loaded and assembled by the Army Ammunition Plant LAP facility in accordance with the applicable drawing (see 4.5.4). . 4.5.1.1 Charge establishme
38、nt (see Table i) . 4.5.1.1*1* Charge slope method. Three or more groups of rounds, three rounds for each group loaded with se1,ected charge 1. weights of propellant (weights selected should bracket expected service charge weight), shall be conditoned and fired at 70F. Three calibration rounds shall
39、also be conditioned and fired at 70% prior to the test rounds. From the data obtained, a composite charge weight versus velocity versus pressure curve shall be established. A charge weight shall be calculated which will yield the prescribed service velocity (see 3.2). This calculated charge weight s
40、hall then be loaded into rounds for the uniormity series (see 4.5.1.2.1). 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 p
41、reviously established. The resultant will be the recommended charge weight. r 6 a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-63517 13 7777706 0353537 5 H 4 P MIL-P-63597 (AR) 4.5.1.1.2 Constant slope method. AfteE ten (10) lots of a given
42、production series have been fired to provide a good knowl- edge 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 versus pressure curve can be establish
43、ed from the test results generated from previous ten lots (see 4.5.1.1.1). This curve can then be used as in 4.5.1.1.1 to calculate the charge weight needed to achieve the service velocity. This calculated charge weight is then to be loaded into rounds for the uniformity series and final adjustment
44、is to be made as indicated above for the charge slope method (see 4.5.1.2.1). The resultant will be the recommended charge weight. 4.5.1.2 Uniformity (see Table I), 4.5.1.2.1 Initial_produstion. Forty (40) rounds shall be assemble6 with the calculated charge weight (see 4.5.1.1. i) of propellant. Te
45、n rounds each shall be conditioned to -50*, 70?l?, 125OF, and 145OF (as indicated by thermocoupled control round). Rounds fired at 7OoF shall be fired alternately with calibra- tion rounds and shall be corrected to standard weapon/firing conditions (i.e;, the difference between calibration performan
46、ce under test conditions and standard conditions). Firing results , at all temperatures shall be corrected to standard projectile weight (see 4.5.3) and to recommended charge weight conditions (ie., the difference between as fired charge weight and recommended charge weight). The means and standard
47、deviations of the velocities and pressures at all firing temperatures shall be calculated using corrected results. Testing at -50- and 145OF shall be for information only. The initial production lots represent the first ten consecutive lots from each manu- facturer which have been produced and met t
48、he acceptance cri- teria of this specification. be assembled with the calculated charge weight (see 4.5.1.1.2) of propellant. and 125OF (as indicated by thermocoupled control round). Rounds fired at 7bF shall be fired alternately with calibra- tion rounds and shall be corrected to standard weapon/fi
49、ring conditions (i.e:, the difference between calibration performance under test conditions anG standard conlitions). Firing results at both temperatures shall be corrected to standard projectile weight (see 4-.5.3) 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 all firing temperature
