1、MIL-F-70823A m 9999906 1990933 33b m I INCH POUND 1 MIL-F-70823A (AR) 2 June 1994 SUPERSEDING MIL-F-70823 (AR) 9 September 1988 MILITARY SPECIFICATION FUZE, ELECTRONIC TIME, M7 62 LOADING, ASSEMBLING AND PACKING AND FUZE, ELECTRONIC TIME, M767 LESS BOOSTER This specification is approved for use by t
2、he U.S. Army Armament, Munitions and Chemical Comand, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 ScoDe. This specification covers the parts, loading, assembling and packing for the Fuze, Electronic Time M762, and parts, loading assembling, but
3、 not installation of the booster or packing for the Fuze, Electronic Time M767. 2. APPLICABLE DOCUMENTS 2.1 Gove rnment docu ment s. 2.1.1 $Dee ifications. Sta ndards, a nd handboo ks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein.
4、 Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). Beneficial comments (recommendations, additions, deletions) and any addres
5、sed to: Conmiander, U.S. Army AFtDEC, ATm: SMCAR-BAC-S, Picatinny Arsenal, New Jersey 07806-5000 by using the Standardization Document improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. pertinent data which may be of use in improving this document, should be AMSC
6、 N/A FSC 1390 DISTRIBUTION S TATEMENT A. Approved for public release: distribution is unlimited. Licensed by Information Handling ServicesSPECIFICATIONS MILITARY MIL-W-8939 MIL-A-48078 MIL-P-60412 STANDARDS MILITARY MIL-STD-109 MIL-STD-331 MIL-STD-1520 MIL-STD-2000 MIL-F-70823A (AR) - Welding, Resis
7、tance of Electronic Circuit Modules - Ammunition, Standard Quality Assurance Provisions, General Specifications for - Packaging, Packing, and Marking for Shipment of Artillery Type and Rocket Fuzes: General Specification for - Quality Assurance Terms and Definitions - Fuze and Fuze Components, Envir
8、onmental - Corrective Action and Disposition System - Standard Requirements for Soldered and Performance Tests for for Nonconforming Material Electrical and Electronic Assemblies MIL-STD-45662 - Calibrated System Requirements (Unless otherwise indicated, copies of federal and military specifications
9、, standards, and handbooks are available from DODSSP - Customer Service, Standardization Documents Order Desk, 700 Robbins Avenue, Bldg. 4D Philadelphia, PA 19111-5094) 2.1.2 Qt her Gove rnment docu ments, draw inas. a nd Dub lications. The following other Government documents, drawings, and publica
10、tions form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DRAWINGS (See 6.5) U.S. ARMY ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER ( ARDEC ) PRODUCT AND PACKAGING DRAWINGS. 8861213 - BOX, Wirebound, Packin
11、g Ammunition for Artillery or Rocket Fuzes 8864492 - BOX, Ammo, Metal, for Artillery Type and Rocket Fuzes 2 Licensed by Information Handling ServicesMIL-F-7023A 9999906 L990935 LO9 C MIL-F-70823A (AR) 8886458 - Box, Pallet Type, Wirebound, Packing, Ammunition for Artillery Type and Rocket Fuzes (wi
12、thin M2A1 Box) 12551000 - Fuze Assembly, M762 12551001 - Fuze Assembly, M767 Less Booster 12550753 - Inductive Setting Requirements for 762/M767 E.T. Fuze 12550756 - Sneak Circuit Analysis International Test Type Operation Procedures ITOP 1-2-601 - Laboratory Vibration Schedules ITOP 4-2-602 - U.S.
13、Army Test and Evaluation Command International Test Operations Procedure, Rough Handling Tests“ Army Regulation AR7 O -3 8 - Research, Development, Test and Evaluation of Material for Extreme Climatic Conditions Army Technical Test Manual TM 43-0001-28-6 - Authorized Projectiles, Fuze And Propelling
14、 Charge Combinations For Howitzer, Medium, Self -propelled, 155MM: M109A2, M109A3, M109A4 With Cannon M185 TM 43-0001-28-7 - Authorized Projectiles, Fuze And Propelling Charge Combinations For Howitzer, Medium, Towed, 155MM: M198 With Cannon M199 (Copies of other Government documents, drawing and pu
15、blications required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.) 2.2 No n-Gove rnment Dub lication3. The following document (s) form a part of this specification to the extent specified
16、herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issue of the documents cited in the solicitation (see 6.2)
17、. 3 Licensed by Information Handling ServicesMIL-F-70823A 9990b L99093b Oq5 MIL-F-70823A AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) ANSI Z1.l - Guide for Quality Control Charts ANSI Z1.2 - Control Chart Method of Analyzing Data ANSI 21.3 - Control Chart Method of Controlling Quality During Product
18、ion (Applications for copies should be addressed to American National Standards Institute, 1430 Broadway, New York, New York 10018. ) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM E29 - Standard Recommended Practice for Indicating Which Places of Figures are to be Considered Significant in
19、Specified Limiting Values (Application for copies of ASTM should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103). 2.3 Order of rsrecede nce. In the event of a conflict between the text of this document and the references cited herei
20、n, 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 additional precedence criteria). 3. REQUIREMENTS 3.1 Materials. Materials shall be in accordance wi
21、th applicable drawings and specifications. 3.1.1 Interface de finition. The fuze shall be fitted to the desired projectile by means of a threaded plug with 2.0-12 UNS-1A threads. No other mechanical or electrical interfaces with the selected projectile is required. 3.2 Co mrsonents a nd assemb lies.
22、 The components and assemblies shall comply with all requirements specified on the Drawings 12551000 for the M762 and 12551001 for the M767 less booster, all associated drawings and with all requirements specified in applicable specifications and standards. 4 Licensed by Information Handling Service
23、s MIL-F-70823A m 9Ob 1990937 T81 m MIL-F-70823A (AR) 3.3 Performance c haracte ristics. 3.3.1 Time sett inu (a ir burst) mode. The fuze shall be capable of being activated and set manually or inductively for functioning times from 0.5 to 199.9 seconds in 0.1 second increments. When the set time is r
24、eached, the fuze shall cause the projectile to function in an air burst mode within f 0.3 seconds of the set time in the temperature range -45 degrees F to +145 degrees F. 3.3.2 Imnact mode. The fuze shall be capable of being activated and set manually or inductively to an impact mode and shall be f
25、unctional in the impact mode no earlier than 500 ms after muzzle exit. 3.3.3 $a fe and arm dev ice. The S&A assembly 12550900 shall be tested for arming and non-arming according to 4.6.2.3. 3.4 $tat istical nrocess CO ntrol aua litv -CI roaram nlan. The contractors quality program plan or detailed i
26、nspection plan shall include documented statistical process controls (SPC). The SPC plan shall be submitted to the contracting officer for review and approval by the Cognizant Technical Agency (CTA) in accordance the contract (see 6.8). The contractor shall not initiate production without written ap
27、proval from the contracting officer. Once approved, if SPC is used for process control purposes only, the contractor may change process control parameters or add new SPC features as necessary. However, if SPC is used for acceptance purposes, the contractor shall not change the SPC without written ap
28、proval from the Contracting Officer. 3.4.1 Process v ields. A system shall be implemented for the reporting and monitoring of process yields. The yield at each inspection station shall be determined. First time seen and rework shall be reported separately. Multiple defects, when due to a single even
29、t or common cause, shall be counted as a single defect and classified in accordance with MIL-STD-1520. All rejects, including reworkable rejects, shall be counted. A system of defect codes is to be used, so as to adequately describe the reason for rejection. During the time manufacturing is in proce
30、ss, the following yield information shall be reported monthly to the procuring activity as an update of the process yield history. a. The percent yield and quantity through each inspection/test station. 5 Licensed by Information Handling ServicesMIL-F-30823A 9999906 I1990938 918 MIL-F-70823A (AR) b.
31、 The percentage of defects by defect codes, counting only rejects, not counting rework, and including the identification of the inspection/test station. 3.4.2 Process t rends a nd ale rt svste m. A history of the process yields shall be kept so that adverse trends that indicate process problems can
32、be readily observed. An alert system shall be utilized to institute investigations and corrective actions when yields fall below the criteria established by the manufacturer. The alert thresholds shall be clearly marked on the yield reports. 3.4.3 Co ntrol o f srocesses . The contractor shall consta
33、ntly control all processes. Control shall be demonstrated through completion of the following: a. Process documentation shall list all control parameters, e.g., time, temp, etc., and associated specifications and requirements. b. Process documentation shall define control limits for all control para
34、meters. c. Process documentation shall detail set-up requirements, including sketches of machines and typical settings. d. Process documentation shall provide for sample inspection as elements of process acceptance, and the feedback of evaluation results to adjust the process control limits. e. Proc
35、ess documentation shall include a system for setting and monitoring controlled parameters such as machine settings of temperature and time. f. Process documentation shall provide a system for recording records of machine calibration for all control parameters. g. Process documentation shall provide
36、a system for process audits at two-week maximum intervals. 3.5 Ballistic functioninq. 3.5.1 Time set . The fuze shall function at the set time within the set time tolerance when set to the time mode. 6 Licensed by Information Handling ServicesMIL-F-70823A 999990b I1990939 854 MIL-F-70823A (AR) 3.5.2
37、 Point deto nation set . When set to the Point Detonation (PD) mode, the fuze shall cause the projectile to function on impact with a six inch minimum thick plywood target if impact occurs after a flight time of 500 ms or more after muzzle exit. When fired at this target so that impact occurs at 400
38、 calibers of muzzle exit, the fuze shall not function when impacting the target. 3.5.3 Premature (see 6. 7.1) or earlv bu rsts (see 6. 7.2)- There shall be no premature bursts or early bursts in the gun tube or in-flight. 3.6 Environmental reauirementg. 3.6.1 $to racle . The fuze, in its standard pa
39、cking container, shall be capable of being stored in a -60 degree F to +160 degree F environment and remain safe and operable in a -45 degree F to +145 degree F environment, according to TABLE I-C of this specification. 3.6.2 Loffistic vibration. The fuze shall meet the requirements of ITOP 1-2-601,
40、 according to 4.6.3.1 of this specification. 3.6.3 Twe ntv-eiaht dav hot. The fuze shall meet the requirements of 4.6.3.2 of this specification. 3.6.4 Fourteen dav humiditv. The fuze shall meet the requirements of 4.6.3.3 of this specification. 3.6.5 Tact ical vibration. The fuze shall meet the requ
41、irements of ITOP 1-2-601, according to 4.6.3.4 of this specification 3.6.6 Sa It foq. The fuze shall meet the requirements of MIL- STD-331, Test 107.1, according to 4.6.3.5 of this specification. 3.6.7 i - x . The fuze shall meet the requirements of MIL-STD-331, Test T121, according to 4.6.3.6 of th
42、is specification. 3.6.8 Bounce ( loose ca rclo 1 , The fuze shall meet the requirement of ITOP 4-2-602, according to 4.6.3.7 of this specification. 3.6.9 Seve n foot d roD - cans. The fuze shall meet the requirements of MIL-STD-331, Test T121, according to 4.6.3.8 of this specification. 7 Licensed b
43、y Information Handling ServicesNIL-F-7023A 9999906 L990940 576 MIL-F-70823A (AR) 3.6.10 Five foot d ron - bare. The fuze shall meet the requirements of MIL-STD-331, Test T121, according to 4.6.3.9 of this specification. 3.6.11 Acceleration aaina test . The fuze shall meet the requirements of 4.3.3.2
44、.3 and 4.3.3.2.4 of this specification. 3.7. First a rticle. When specified in the contract or purchase order, a sample shall be subjected to first article inspection in accordance with the technical provisions herein (see 4.3). 3.8 Lot accenta nce sa mnle. Lot acceptance sample and testing shall be
45、 in accordance with 4.4.2. 3.9 Electrical serformance. 3.9.1 PWB electrical tests ( PN 12550830) . The PWB assembly shall be tested per 4.6.1.1 of this specification. 3.9.2 Level II tests i PN 12550800) . The Level II assembly shall be tested per 4.6.1.3 and TABLE VI1 of this specification. 3.9.3 Ba
46、tterv assemb IV (PN 125508 790). The battery assembly shall be tested for non-activated voltage and resistance per 4.6.1.7. 3.9.4 Exnlosive resistance. a. Actuato r. niston (12550906) . The resistance of the piston actuator shall be measured per 12550900 using a meter supplying less than 1 ma. b. De
47、tonator, electric (125509 26). The detonator resistance shall be measured per 12550920 using a meter supplying less than 1 ma. (see drawing 12550926 note 4). c. Batterv n rimer assemb IV, Sta b/electrical (1255099 1). The battery primer resistance shall be measured per 12550990 using a meter supplyi
48、ng less than 1 ma. d. Detonator, electrical soc ket CO ntact to a round soc ket (12550900 L . Using a meter supplying less than 1 ma, verify that the S&A assembly detonator contact (see drawing 12550900, note 4H) to ground socket resistance is greater than 10 megohms. Licensed by Information Handlin
49、g ServicesMIL-F-70823A = 999990b I1990941 402 = MIL-F-70823A (AR) e. pattern D rimer soc ket to u round socket (12550900) . Using a meter supplying less than 1 ma, verify that the S&A assembly battery primer contact (see drawing 12550900, note 4H) to ground socket resistance is greater than 10 megohms. f. peto nator electric resistance ( 12550900) . Using a meter supplying less than 1 ma, verify that the S&A assembly detonator electrode (see drawing 12550900, note 4G) to ground socket resistance is less than 0.30 ohm. 3.10 Chanue o f circuit des iun. Whenever an engineering change
