1、t I INCHPOUND MIL-F-71149 (AR) O1 November 1993 MILITARY SPECIFICATION FUZE, POINT DETONATING, PRACTICE, M779 WITH PYROTECHNIC SIGNATURE CARTRIDGE This specification is approved for use by the U.S. Army Armament, Munitions and Chemical Command, and is available for use by all Departments and Agencie
2、s of the Department of Defense. 1. SCOPE 3.1 Scope. This specification covers the manufacture of metal parts and pyrotechnic signature cartridges for one type of point detonating practice fuze designated as Fuze, Point Detonating, Practice, M779, for use on Cartridge, 60MM, Practice, Short Range, M7
3、66 (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those liste
4、d in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS MILITARY MIL-A-48078 - Ammunition, Standard Quality Assurance Provisions, General Specification for Beneficial comments (recommendati
5、ons, additions, deletions) and any pertinent data which may be of use in improving this document, should be addressed to: Commander, U.S. Army ARDEC, Am: SMCAR-BAC-S, Picatinny Arsenal, NJ 07806-5000 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of th
6、is document or by letter. AMSC NIA FSC 1390 a Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-711q9 9 999990b 1969974 37T 9 MIL-F-71149 (AR) STANDARDS MILITARY MIL-STD-109 - Quality Assura
7、nce Terms and Definitions MIL-STD-331 - Fuze and Fuze Components, Environmental and MIL-STD-1167 - Ammunition Data Card Performance Tests for (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the DODSSP - Customer Service, Standar
8、dization Documents Order Desk, 700 Robbins Avenue, Bldg. 4D, Philadelphia, PA 19111-5094.) 2.1-2 Other Government documents, drawings, and publications. The following other Government documents, drawings and publications form a part of the document to the extent specified herein. Unless otherwise sp
9、ecified, the issues shall be those in effect on the date of the solicitation. DRAWINGS (see 6.5) U.S. ARMY ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER (ARDEC) PACKING DRAWINGS 12598354 - Packing and Marking of Box, Fiberboard, Fuze, 32598356 - Packing and Marking of Wood Box for Fuze, Prac
10、t-j ce M751 Practice M751 PRODUCT DRAWINGS 12953588 - Fuze, PD, Practice M779 a . . (Copies of other Government documents, drawings and publications required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the cont
11、racting activity-) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-71149 999990b 19b9975 206 MIL-F-711.49 (AR) 2.2 Non-Government publicat.ions. The following document(s) form a part of this document to the extent specified herein. Unless oth
12、erwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DODISS cited in the sol ici tation. Unless otherwise specif i ed, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SO
13、CIETY OF TESTING AND MATERIAL (ASTM) ASTM-A370 - Mechanical Testing of Steel Products (Applicati-on for copies of ASTM publication should be addressed to the American Society for Testing and Materials, 1916 Race Street., Philadelphia, PA 19103). 2.3 Order of precedence. In the event of a confljct be
14、tween the text of this document and the references cjt-ed herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. (See contract provisions for addj tiona1 precedence criteria). 3.
15、 REQU I REMENTS 3.1 Material. Materials and parts shall be in accordance with the applicable drawings and specifications. O 3.2 Fuze assemblies and parts. 3.2.1 Fuze parts u a k pc F c -d ci a c O ci a, c, c O pc Qi JN 23 =LI rl . n -d . n r( . Nm dln dTr *. N n . N d Tr . m n N Tr Tr . . . ci (II m
16、a, cici u a,+ ruG -4 rl 1 PI u a c -4 pc m m (II c, ci cici u u a, a, ru ru a, a, m u . -rl .I . .d .Ai i -d 5 a, g d rl O w (o -li G O -ri ci m G -4 a, u -4 4J u m k pi oi c -4 4J m c O ci a, a ci c, -4 O pi ai J3 k +L 4 b w* W Il 4 w w r- m . N Tr -f . a3 Il N w -J In Nrl Cu N (u N mm m m m m . -A
17、 mm mm a m m m a, ai a, a, a, O0 O O O O rlri ri ri 4 ri YY c, 1010 10 rn 0) m 4Ja ci ci ci ci uci u u u o a, a a a, a, wo w w w w a, -4 Q) a, a, a, 54 a a a a m 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-71149 999990b 1969985 155 e s C
18、 -I- + c c (I: c a -n ci k a ci o k . H w GI m 4 h L O o I- W I u1 m r- fi c a, u -4 ci u a k pi bi c -i ci m c O ci a, ci c -li O pi Q) N 3 E a n . W I- n z vi O 4 N N N N d* a E WU-Jkci id 5ci.d a, u aa,m c Il id u .ri c a c u a, E 5 c id 5 a, 5 aJ 34 II 5aJ a4J C d .4Icik L id u aa, W cu3a E U-JO
19、kO e I I 14 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.4.2 MIL-F-71.149 (AR) 4.4 Quality conformance inspection. 4.4.3 Inspection lot formation. Inspection lots shall comply with the lot formation provisions of MIL-A-48078. In addition, inspec
20、tion lots of M779 fuzes shall contain: a. Primed 20 gauge shells of one inspection lot. from one manufacturer. b. Springs (for each type independently) of one inspection lot from one. manufacturer. c. Met-al or plastic parts from one. inspecti.on lot. from one manufacturer. d. No more than thirty th
21、ousand or no less than five thousand fuzes per inspection lot. e. Minimum inspection lot size of all components shall be 5000. f. Fuze chambers from one inspection lot. from one manufacturer. 9. Fuze sleeves from one inspection lot from one manufacturer. h. Pyrotechnic composition from one inspectio
22、n lot. from one manufacturer. Examinations and tests. a. Classification of characteristics. Quality conformance examinations and tests are specified in the following Classif icat.i.on of Characteristics paragraphs. The contractors quality program or detailed inspection system shall provie assurance
23、of compli ance of all characteristics with the applicable drawing and specification requirements utilizing as a minimum the conformance criteria specified. When cited herein, attributes sampling inspection shall be conducted in accordance with Table II below, using the inspection levels cit-ed in th
24、e Classification of Characteristics paragraphs. I5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-71149 D 999990b 1969988 964 MIL-F-71149 (AR) TABLE II. Attributes sampling inspection LOT SIZE INSPECTION LEVELS 5001 to 10000 10001 to 35000 350
25、01 to 150000 150001 to 500000 500001 and over II - - I III - IV - VI - 1250 125 125 50 32 13 1250 315 1 25 80 50 13 i250 315 125 80 50 13 1250 500 200 125 50 13 1250 500 200 125 50 13 Numbers under inspection levels indicate sample size; asterisks indicate one hundred percent inspection. If sample s
26、ize exceeds size, perform one hundred percent inspection. Accept on zero and reject on one or more for all inspection levels. I b. Alternative quality conformance provisions. Unless otherwise specified herein or provided for in the contract-, alternative quality conformance procedures, methods or eq
27、uipment, such as statistical process control, tool control, variables sampling or other types of sampling plans, etc., may be used by the contractor when they provide, as a minimum, the level of quality assurance required by the provisions herein. Prior to applying such alternative procedures, metho
28、ds or equipment, the contractor shall evaluation (see 6.7). When required, the contractor shall equal to or better than the specified quality conformance provision(s) herein. In case of dispute as to whether the contractors proposed alternative(s) provides equivalent assurance, alternative provision
29、s shall be specifically incorporated into the contractors quality program or inspection syst-em, as applicable. describe them in a written proposal submitted to the Government. for I demonstrate that the effectiveness of each proposed alternative is I the provisions of this specification shall apply
30、. All approved I 16 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-71149 (AR) c. For examination under SPC, the following shall be used: (1) Quality conformance inspection utilizing SPC. The contractor may choose to utilize SPC on any or all p
31、arts: however, its use is mandatory on those parts specified in 4.1.3.1. Prior to first article inspections and tests, the contractor shall submit an SPC implementation plan for approval by the Government. The plan shall provide as a minimum, information regarding the following: (a) Procedures inclu
32、ding organizati.onal/personnel responsibilities to be followed to demonstrate that the process is controlled. (b) Procedures including organizational/personnel responsibilities to be followed after process is in control. (c) Procedures including organizational/personnel responsibilities to be follow
33、ed if the process goes out. of control and what must be done to demonstrate that the problem has been corrected and the process is back in control. (2) Acceptance criteria under SPC. Parts that are being manufactured under SPC do not have to undergo acceptance inspection in accordance with a specifi
34、c sampling plan. Under SPC, acceptance shall be based on the following criteria: (a) The process is in control (all points on the control chart are within the control limits). (b) Both C and C are equal to or greater than 1.33 where: P Pk C = (USL - LSL)/6R/d2 C P Or Cpl = The smaller of the t-wo va
35、lues Cp, Pk - = (Y - LSL)/3R/d2) Pl C USL = Upper Specifi.cat.ion Limit LSL = Lower Specification Limi.t - of the group of n being inspected R = Range = xmax min = The Average Range of k groups that- were inspected (RI = R2 - e Rk)/k 17 Provided by IHSNot for ResaleNo reproduction or networking perm
36、itted without license from IHS-,-,-MIL-F-71149 9999906 1969990 512 MIL-F-71149 (AR) - X- = The Grand Mean of k groups that- were inspected = (xi + X2 = Xk)/k Where nl = n2 . nk - X = The individual measurements X = The mean of the individual measurements d = A common conversion factor which can be f
37、ound in any statistics test. Common values are shown below on Table II. TABLE III - Conversion values Sample Size Factor 1.1.28 1.693 2.059 2.326 2.534 It should be noted that until the SPC accept-ance criteria above have been met by the process, acceptance of materiel will be i.n accordance with 4.
38、4.2.a above. Further, when the process goes out of control (i.e., one or more points are outside of the control limits or 1 or more points are outside of the specification limits) , acceptance will go back to the requirements of 4.4.2.a. until the contractor has demonstrated that the process is back
39、 in control and the requirements for SPC as stated in this paragraph above have been met. Any point outside of the specification limits is cause for rejection of all material since the last inspection that was found acceptable for that particular examination. 18 Provided by IHSNot for ResaleNo repro
40、duction or networking permitted without license from IHS-,-,-P; 4 Y NCVrnNNCVNNCV cv CVNCV nirn e * . 0. mmmmmmmmm m mmm mm HHHHHHHHH H HHH HH HHHHHHHHH H HHH .HH HHHHHHHHH H HHH H+I a, k O Q k Q) c; c 7 O u 5 m Q) c k aJ x -d k ci (B cw ma, Lo a-d u O 0, -4 .e k k C: k L-c (B k g MIL-F-71149 999990
41、6 1969998 803 rl W WVNN ri mmm m * 5 a, C -ri w rl ma 5.4 m ah3 3a, cilci wmo OE (II a -li G a E Y m Al 26 1 1 1 I l I I l I l I 1 1 I I I 1 i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 Y W U z W W N N N“ -4 m m mmm mm *.* X m E ci m X m E k O
42、 .G kC, &Y cic $ a a,a ai Ed C m c -4 E ci m c .li & k a, a c 7 .G C, &Y C a, 5 a, I) 10 a 4 k O C, m Ui c a, -Pl ci I) I) ci -4 G E a, E C o) coa, 4 -li -rl C, es ci -li I) .rl cwc: C:k m o)a,E Go) .li a, k u4 o ciQ FE C,x ai 4 k k c I) !&a a5 ai-4 &Ob O ci&m&aa,k OU0 z 70000kch kCO OUUl%iCo pi P4
43、28 m c .li 24 u o) c u O ci k O -4 k a -4 & I) k 5 O c -3 N k O cw i m E O -3 * w O 7 + L ar p: C + C c L U a a a + U + U er L + L C + T I- a a E a a .r c L I- -c mc Y- vi w I I I I 1 .I I I I I I I l l 1 I l l I I l l 1 I I I 1 I I 1 1 I I I I I I 1 I I I l I I l Provided by IHSNot for ResaleNo rep
44、roduction or networking permitted without license from IHS-,-,-O m * rl rl P 1 crr I Crl c H . F c -4 k :VI ia 1 Lt * u . X (6 E +J (6 X m E k al O c k4J c *ri E c, a k c O E 4J F I) c k Q) -4 ai 4 I) a (o c 4 -4 7 c E a c E .G c, Q) I) Fi 7i -4 C c, c Q) c, -4 Q, c O z a *rl c I) c VI P rd O F c -d
45、 x u Q) c u O 4J k O -4 k a 7i 2 -4 & (o k 3 O c * N LI O rei x 2 O * . rei O c, c F Ln 2 - 29 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 b- W vi r MIL-F-7LLYS 999990b L970002 728 = k a, x k ci Ln -4 4 Fi r= W CJ cv NNN Nrl m m mmm mm . *.* *. k O Fi c d % u Q) c u O c, k O li k a c: r! E. 10 k 7 O c Tr N & O iw i E r- N . IH O 30 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
