1、This Specification is approved for use within the U.S. Army Armament Munitions and Chemical Command, and is available for iI use by al1 Departments and Agencies of the Department of Defense. c 1. SCOPE .- 1.1 Scope. This specification covers the requirements and quality assurance provisions for the
2、loading, assembling and packing of the 14776 Mechanical Time Super Quick (MTSQ) Fuze. 2. APPLICABLE DOCUMENTS 2.1 Government documents. MIL-F-70713 (AR) 28 AUGUST 1987 MILITARY SPECIFICATION FUZE, MTSQ, M776 LOADING, ASSEMBLING AND PACKING 2.1.1 Specifications and Standards. The following specificat
3、ions and standards form a part of this specification to the extent specified herein. Unless otherwise specified, the issue of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitati
4、on. SPECIFICATIONS FEDERAL MIL-A-48078 - Ammunition, Standards Quality Assurance Provisions, General Specification for Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of we in Improving this document should be addressed to: Commander, U.S. Army Armamen
5、t,Munitions and Chemical Command, Attn. AMSMC-QA. Picatinny Arsenal, New Jersey 07806-5OO by using the self-addressed Standardiza- ion Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. FCC 1390 AMSC N/A DISTRIBUTION STATEMENT A. a Approved for public re
6、lease: distribution is unlimited. fl THIS OOCUMENT CONTAINS -/q PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-70713 13 7779706 O356777 7 MIL-F-70713 (AR) STANDARDS MIL I TARY MIL-STD-105 - Sampling Procedures and Tables for MIL-STD-331
7、 - Fuze and Fuze Components, Environmental MIL-STD-414 - Sampling Procedures and Tables for Inspection by Attributes and Performance Test for Inspection by Variables for Percent Defect ives 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, k draw
8、ings, and publications form a part of this specification to the extent specified herein. Unless otherwise specified, the issues shall be those in effect on the date of solicitation. DRAW I NGS U.S. ARMY ARMAMENT, RESEARCH, DEVELOPMENT AND ENGINEERING CENTER (ARDEC) PRODUCT DRAWINGS 12361000 - Fuze,
9、MTSQ, M776 (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Order of precedence. In the event of a conflict betwe
10、en the text of this specification and the references cited herein, (except for associated detail specifications, specification sheets or MS standards) the text of this specification shall take precedence. Nothing in this specification, however shall supersede applicable laws and regulation unless sp
11、ecific exemption has been obtained. 3. REQUIREMENTS 3.1 Material. Materials and parts shall be in accordance with applicable drawings and specifications. 3.2 Fuze assembly. The M776 MTSQ fuze assembly shall comply with all re,quirements specified in drawing (dwg.) 12361000 and with all requirements
12、specified in applicable specifications. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a * e - MIL-F-70713 13 W 7777706 0356780 3 H MIL-F-70713 (AR) 3.3 Transportation vibration. The fuze assembly shall comply with the requirements of MIL-STD-331A
13、, Test 123, and of 3.8.1, 3.8.3 and 3.8.5. 3.4 Jolt and jumble. The fuze assembly shall comply with the requirements of MIL-STD-331A, Test 101.3, Procedure 2 and Test 102.2. 3.5 Drop test, 1.5 meter. The fuze assembly shall comply with the requirements of MIL-STD-331A, Test 111.1. 3.6 Waterproofness
14、. The fuze assembly shall comply with the requirements of MIL-STD-331A, Test 108, except that the duration of immersion shall be five (5) minutes minimum and the pressure shall be three (3) psig min. 3.7 Torque. The fuze assembly timer setting section shall not move when a torque of 30 kpcm min. is
15、applied. The timer setting section shall move when a torque of 55 kpcm max. is applied. 3,8 Ballistic performance (proving ground). 3.8.1 Premature burst. There shall be no premature burst or metal parts failure in the mortar tube or in the first 100 meters of flight. 3.8.2 Arming safety. The fuze s
16、hall not function on impact against a 25mm min. plywood screen positioned at a distance of - 40 meters t/- i meter. - 3.8.3 Fuze functioninq time (702). The fuze, when set in the time mode, shall cause the projectile to function within the upper (UL) and lower (LL) time limits and shall not exceed t
17、he maximum allowable percent defective as specified below. Set Time (sec) Function Time Limits (sec) 19.0 LL = 18.00 UL = 20.00 26.0 LL = 25.00 UL = 27.00 Sample Size (see 6.4) Maximum Allowable Percent Defect 30 20 10 3 2.83 2.95 3.26 Provided by IHSNot for ResaleNo reproduction or networking permi
18、tted without license from IHS-,-,- MIL-F-70713 13 W 9777706 0356781 5 MIL-F-70713 (AR) 3.8.4 Extreme temperature fuze functioning time. The fuze, when set in the time mode, and conditioned at -5OOF OK 1450F, shall cause the projectile to function within the upper (UL) and lower (LL) time limits and
19、shall not exceed the maximum allowable percent defective requirement as specified below. Set Time (sec) Function Time Limits (sec) 26.0 LL = 24.50 UL = 27.50 Sample Size (see 6.4) Maximum Allowable Percent Defect 30 10 2.83 3.26 3.8.5 Fuze failure. When a fuze is set to function in the air and funct
20、ions on impact or does not function at all, it shall be considered a dud. 3.9 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspections in accordance specified herein. (see 4.3 and 6). 3.10 Workmanship. All parts and assemblies shall be
21、 fabricated in a thorough, workmanlike manner. They shall be free of burrs, sharp edges, cracks, dirt, rust and other foreign matter. The cleaning methods shall not be injurious to any part, nor shall the parts be contaminated by the cleaning agent. Exterior surface coating shall be uniform and cont
22、inuous except for a few light scratches not exposing any base material. All required markings shall be neat and sharply defined. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract OK purchase order, the contractor is responsible for the perf
23、ormance of al1 inspection requirements as specified herein. contract or purchase order, the contractor may utilize 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 right to
24、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. herein or in the contract, the provisions of MIL-A-48078 shall apply and are hereby made a part of this detail specification.
25、Except as otherwise specified in the Unless otherwise specified 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-F-70713 13 777770b 035b782 7 MIL-F-70713 (AR) 4.1.1 Responsibility for compliance. All items must meet all requirements of sections
26、 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of assuring that all products or suppli
27、es submitted to the Government for acceptance comply with all requirements of the contract. Sampling in quality conformance does not authorize submission of known defective material, either indicated or actual nor does it commit the Government to acceptance of any defective material. inspection shal
28、l be conducted on this item. 3 4.2 Classification of inspections. The following types of i a. First Article Inspection (see 4.3) b. Quality Conformance Inspection (see 4.4) 4.3 First article inspection. 4.3.1 Submission. The contractor shall submit a first article as designated by the Contracting Of
29、ficer for evaluation in accordance with provisions of 4.3.2. The first article sample shall consist of the following items in sample quantities O as ind ica ted. Part Descr ipt ion Drawinq s guan t i tv Fuze, MTSQ, M776 12361000 200 4.3.2 Inspections to be performed. See MIL-A-48078 and Table I spec
30、ified herein. 4.3.3. Rejection. See MIL-A-48078. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-70713 13 9999906 0356983 9 U - - c O U o al rn c al rl u U -4 -4 .FI 2 U rn LI -4 Fr . H w I4 a 8 rl cvrlcvcvcv cvrl cvmd rlrlu)u)u)u)u) o. .i. . d
31、u) u)u)u)oi u)u)u)dddd 0. .Id . * d*dU ddddddd . . ., rlcumdu) cvm dmwP mmQ)COCDQ)Q) mm mmmm ommmmmm D 0. 0. . UU rnrn rn al LI 7 rl Id Fr al N 7 Er -4 . 5 al U o al -n al LI al a U al I+ o .rl U LI Id U rn u -4 w al O Y aJ rn 1 Id o rl rl Id % rn al U 7 rl .FI Id w al N 7 w al al aloalalal E 3 CP L
32、I OB0 c OB U o .Pl w w 2 b L; 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-707L3 13 7777706 U35678q U 4 I MIL-F-70713 (AR) 4.4 Quality conformance inspection. 4.4.1 Inspect ion lot format ion. Inspect ion lot shall comply with the lot form
33、ation provisions of MIL-A-48078. In addit ion, each inspect ion lot of fuzes shall contain: a. Fuze components from one lot interfix number from one manu facturer. b. Expelling charges of one lot interfix number from one manufacturer. 4.4.2. Examination. See MIL-A-48078. Unless otherwise specified i
34、n the classification of Defects and Test Tables, sampling plans shall be in accordance with MIL-STD-105, Inspect ion Level II. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-rlrl rl rlrl O NCVNNI- Nrl NCV mm mmmmm mm e ootoOp$Poo $Pow dpcy, 00000
35、mm O0 *di ww O0 rlrl 00000 O0 e m #-I - a, c, Q s O rl ul ul ul ul CU (d o YU u m aiFr (do piz PU m OP pic, O 2 ;$ pi .d .G ul 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-70713 13 m 7777906 0356786 Y I z B u Fil pi cn E H w u 1 O 0. u 3i
36、B H a z i. I U O I4 g .Pl U u 7 & U rn al f2 tn w .rl fiu firn aal mu t3c .a alal NU 2: rlhl mm m0303wm WIT0303 mmmmm mmmm ea . nnnnn nnn P um aaaaa oohloIo moo0 rlwrl rl rlbw VU” “VUVU VI al d 2 u rn al LI 1 rl arn Wal 3 al NU su Wal W cal Om .rl .rl . a al U u al -n al LI al a O U U O rl al c U al
37、 a u rl PI a c rn rn al rl .rl a w al N 1 W al : : LIhLI LI O00 .O a al o al-no CLGal OBOLII3 VY E-i O Z w U O rl Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-rl 8 rl E a h tn c rl ld a, tn L! a, ci w 4 a .rl 2 a, L-i O w a, F9 a, ci a, rl a V sc
38、u ld pi v . MIL-F-707L3 13 7997706 0356787 6 rlrlrlrld lid rdldldldld ldld 77777 77 rnrnwlrnrn rnrn .rl .d .d .rl .rl 4 .d 33333 33 rlrlrlrlrl O . rlrl mmmmm *. mm dp OP cp d0 dp OP dP 00000 mln *-Y-Y ww 00000 O0 . a a, d a a, rn 31 rl LI a, -11 c e: 10 Provided by IHSNot for ResaleNo reproduction o
39、r networking permitted without license from IHS-,-,-i l I I i - L a I 7 MIL-F-70713 13 7777706 0356788 8 t MIL-F-70713 (AR) 4.4.3 Inspection equipment. The inspection equipment required to perform the examination and tests prescribed herein is described in the “Paragraph Reference/Inspection Method“
40、 column in the tables starting with 4.4.2.1. The contractor Shall submit for approval inspection equipment designs in accordance with the terms of the contract. See section 6 of MIL-A-48078 and 6 of this specifications. 4.5 Methods of inspection. 4.5.1 Transportation vibration. The test shall be per
41、formed on complete fuze assemblies (dwg. 12361000) set “S“. The test shall be conducted in accordance with the procedures outlined in MIL-STD-331A, Test 123. The sampled fuzes shall then be fired as detailed in 4.5.5.2. If any fuze becomes unsafe or inoperable following the test, then the fuze shall
42、 be classed defective. In addition, the fuzes shall meet the requ ir emen t of 3.8.3. 4.5.2 Jolt and jumble. The test shall be performed on complete fuze assemblies (dwg. 12361000) set “S“ . The jolt test shall be conducted in accordance with the procedures outlined in MIL-STD-331A, Test 101.3, Proc
43、edure I. Following the completion of the jolt test, the fuzes shall be subjected to the jumble test in accordance with the procedures of MIL-STD-331A, Test 102.2. 4.5.3 Drop test, 1.5 meter. The complete fuze assemblies without the pull wires, set “S“, shall be assembled to inert loaded projectiles
44、as specified in the contract and be subjected to the 1.5 meter drop test. The test shall be conducted in accordance with the procedures outlined in MIL-STD-331A, Test 111.1, Procedure 1. After this test, the fuzes shall be disassembled to determine the fuzes have been armed or become unsafe in anywa
45、y. If so, the condition shall be classed defect ive. 4.5.4 Waterproofness. The complete fuze assemblies shall be subjected to the waterproofness test. The waterproofness test shall be tested in accordance with the procedures outlined in MIL-STD-331A, Test 108, except as provided in 3.6. After the te
46、st, the fuzes shall be disassembled and examined under ultra-violet light. Any assembly that has evidence of any water entry shall be classed defective. 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-707L3 13 777770b 035b77 T MIL-F-70713 (A
47、R) 4.5.5 Ballistic test. 4.5.5.1 Arming safety. The fuzes shall be assembled to inert filled 60mm cartridges. The fuze shall be set “S“, fired at charge 1 at zero (O) degree elevation, against a one inch plywood screen set at 40 +/- 1 meters from the muzzle. If any fuze functions upon impacting the
48、screen, the fuze shall be classed as a defective. The fuze may function behind the screen. 4.5.5.2 Fuze functioninq time. The sampled fuzes shall be assembled to 60mm, M721 cartridges and fired from an M224 mortar at elevations between 800 mils and 1511 mils for air burst functioning. All fuze setti
49、ngs shall be photographed using an instant, self processing camera. Three independent infrared sensing chronograph systems or equivalent shall be used to measure time of burst. The three recorded time values for each round shall be rounded to the nearest .O1 second. At least two time values are necessary to calculate the estimate of
