1、 MIL-P-63226 13 9999906 0345852 5 I- 53-37- - = *L-. -, - I :-; , 3- MIL-P-63226 (AR) 1 August 1979 . s specificat search and Developm Th #?t ITARY SPEC IF ICATICN PROJECT I LE, GU I DED, 155MH, Xi4712, WARHEAD FOR .- on is approved for use by the JS Amy Armament Re- nt Command and is available for
2、use by all Departments and Agencies of the Department of Defense. , 1. - SCOPE. 1.1 This specification establishes the requirenents for the nanufac- 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on the. date-of ture and acceptance of the Warhead, Guided-Projectile XM712.
3、 .I invitation for bids or request. for proposal forn a part of this specifica- tion to the extent specified herein. SPECIFICATIONS FEDERAL PPP-8-601 - PPP-B-621 - PPP-C-843 - PPP-C-850 - PPP-C-1752 - PPP-T-76 - Box, Wood, Cleated Plywood Box, Wood, Nailed and Lock Corner Cushioning Material, Cellul
4、osic Cushf oni ng Material, Polystyrene Expanded, Resi 1 ient (For Packaging Appl icati on) Cushioning Material, ?ackaging, Unicellular, Pol yethyl ene Foam, Flexible Tape, Packaging, Paper (For Carton Sealing) MILITARY . MIL-6-117 - Bag, Sleeve and Tubing - Interior Packaging MIL-D-3464 - Desiccant
5、s, Activated, Bagged, Packaged, Use and Static Dehumidification MIL-S-14760 - Sil f Ca . MIL-P-17667 - Paper, Wrapping, Chemically Neutral (tbncorros i ve) FSC: 1320 Beneficid commentS (recommandations, additions, deletion#) and any pertheat dat. which may be of uw in improving thu document should b
6、e addressed to: Commrilder. US Amy Armament Research and Development Conunmd, Atta DRDWA, Donr. Yew Jeney 07801 by urins the soif-addresied Stuidardiution Document Improvement , THIS .- DOCUMEN1 CONTAINS with the exception of specified penetrameters (4.5,5.4) and approved radiation shielding used to
7、 prevent over-exposure of film in selected areas, Such shielding, if used, shall be free of any radiographically observable features in the projected area under inspection. exposures and fi Tm processing shall be control 1 ed to consi stently meet film density requirements of 4.5.5.5. shall include
8、the treatment of all potential defect features as actual defects, unless positively identified as extraneous artifacts or accept- able metal parts irregularities. Additional .radiographs of an item may be taken to improve visibility or to properly classify a defect. .additional radiographs shall be
9、identified as retakes and traceable to the r i g i na1 rad i ogra ph s. 4.5.5.2 Radiography of warheads.- Warheads shall be positioned for radiogra hic exposures to produce no more than two warhead images on one one film extending from the flange on the shaped-charge cone back to the threads for the
10、 fuze retainer. The complete elliptical projection of the flange on the cone shall be visible on the radiograph. The radiation source shall lie in a plane perpendicular to the longitudinalaxis of the projectile, such that no discernible parallax is produced on the radio- graphic image at the positio
11、n of the rear surface intersecting the largest outside diameter. Source-to-film distance shall benot less than 70 inches. The peak radiation energy shall be equal to or- greater than 900 kilovolts. Each warhead shall be radiographed in two orientations, sepa- rated by a rotation of 90 degrees about
12、its longitudinal axis, and aligned on consistent external features. Penetrameters and other radiographic sensitivity indicators shall be employed as specified in 4.5.5.4, Radio- graphs of 1 oaded-yarheads shall be examined by personnel certi f i ed in accordance with M1b;STD-410 for all sensitivity
13、indicators and radio- graphic inspection requ$+trements of this specification. prove. defective in one oi“-$oth orientations shall be rejected. Cassettes Radiographic Examination of radiographic images All such 14 inch !I y 17 inch film. The length of one warhead shall be covered by Warheads which ,
14、 ,- I .- , - .- Licensed by Information Handling ServicesMIL-P-63226 13 7777906 03i.15863 T f - - - e. HIL-P-63226( AR) 4.5.5.3 Radiographic ident if icat ion .- An identi ficat i on numbering system chal 7 be employed which shall provide direct, precise corre1 ation between each item and its radiog
15、raphic image, and which shall be used for report i ng purposes. 4.5.5.4 Radiographic sensitivity.- The Sensitivity of the radio- graphic technique for warhead insDection shall be determined bv means of penetrameters fabricated in accordance with MIL-STD-453 and as“ specified herein, and shall be pos
16、itioned on the radiographic image as shown in Fig- ure 2. tions of the 2T holes shall be closely controlled; with the penetrameters 3n the radiation source side of the projectile. niade of steel having an approximate specific gravity of 7.8. When radio- graphing a number of similar warheads, the fre
17、quency of sensitivity check shall be once each radiographic exposure. One warhead may be used repeat- edly for the penetrameter exposures. For in-motion exposures on a rotat- ing ring, the penetrameters shall be used at one station for each complete rotation of the ring. For stationary exposures of
18、a number of warheads, the penetrameters shall be used on the warhead farthest from the central beam of radiation. The radiographic materials and technique used ,on the warhead having penetrameters shall be identical in every contra11 ab1 e as- pect to those used on all other inspected warheads. The
19、sensitivity of the radiographic technique- shall not be considered satisfactory unless the outline ofthe penetrameters and the image of the 2T holes are perceptible on the radiographs. Failure of this sensitivity check shall be cause for cessation of radiographic operations until the source of the f
20、ailure is corrected. All warheads radiographically accepted subsequent to the last Successful sensitivity check shall be re-radiographed and reinspected. Additionally, the sensitivity of the radiographic technique for warhead inspection shall be determined by examination of internal features. These
21、I features shall consist of: (i) the complete outline of the internal sur- face of the steel warhead body surrounding the explosive and fuze well; (2) the complete outline of both the inner and outer surfaces of the shaped-charge cone; (3) the complete outline of the fuze well in the ex- plosive,. T
22、he sensitivity of the radiographic technique shall not be con- sidered satisfactory un1 ess these features are sharply defi ned on the radiographic image of every warhead inspected. Failure to meet those sen- sitivity.requirements :on any warhead shall require re-radiographing of the warhead and a d
23、iagnosis of the .failure. 4.5.5.5 Photographic density of radiographic film.- The photographic density of the film of warheads shall be determined in the region of mini- mum film density within the projected area of the explosive charge, and shall measure 1.25 or greater. Film density shall be check
24、ed each hour of operation or fraction thereof for each fi lm processor- Greater frequency shall be required for any period during which diffi-culty is encountered in establishing the required densi ties. Photographic- densities shall be measured with a diffuse density, photoelectric -densitometer pr
25、oviding di- rect display of numerical density units and-having a sample spot of 3 mil- l imeters diameter. Accuracy of densitometer shall be maintained by Two penetrameters for each warhead shall be used, and the posi- Penetrameters shall be - Licensed by Information Handling ServicesT 6 in Location
26、 of ZT hole on cen- tral axis of warhead. 2T hole biapieter 0.064 inch. Thickness tif genetrameter 0.032 inch, based on 2 per- cent o 1.6 inch tata1 steel erilii*/alent t9ickness. 7- Location cf projected iiiizge ?f 2T hole is tanaent to in- ner side wal 1 of wrhed arlg tanpent to line gf*o.lectec!
27、b! step on outside diameter. 2T hole diameter is 0.15 i1ici7. Thickness of :)enetrameter i j 0.075 inch, based on 2 oer- .cent of 3.75 total steel equivalent thickness . %Y -2- .I . Plane of radiation source, Penetrawters are fabricated of steel havina specific gravity of 7.8, in accordance with MIL
28、 -STD-453. Figure 2 - Penetrameter Locations * - - Licensed by Information Handling Servicescal ibrating with a photographic- step tablet each hour immediately prior to measurements of the radjographic film. step tablet density level within .2D of that being measured on the radio- graphic film. Each
29、 point of density measurement on the radiographs shall be identified by a circumscribed, circle (made with a suitable pen or pen- cil) of no more than 1/4 inch in diameter. All photographic step tablets used in nomal operation shall be checked for accuracy.monthly by cali- brating the,densitometer w
30、ith a reference photographic step tablet cal i- brated by National Bureau of Standards or approved by ARRADCOM. Reference tablets shall be kept available, but shall be prctected fran wear and dam- age and shall not be used in daily operations. Any photographic step tab- let used in daily operations
31、having severe surface damage 3r showing a deviation from previous cal ibrations by .05D or more chal 1 be replaced with a new, unused step tablet. performed in accordance with the general requi rement-s of MIL-STD-453 and specific product assurance procedures prepared by the contractor and ap- prove
32、d by the Government procuring activity. graph of warheads showing penetrameters, as well as radiographic diagrams and techniques, shall be submitted for review and approval prior to the start of initial production. The initial radiograph will be retained at ARRADCOM. One radiograph of warheads showi
33、ng penetrameters shall be sub- mitted for review once each month of production on each contract. All radiographs submitted shall be produced using materials and techniques identical to those used on normal production items. 4.5.5.8 Radiographic fi 1m.- Only approved industrial radiographic film shal
34、l be used to radiograph the loaded warheads or components there- of. Types, other than those listed below, may be used only after evalua- tion and approval by ARRABCOM. The following are initially approved Calibration shall be made at a 4.5.5.6 Radiographic procedures.- Radiographic inspections shal
35、l be 4.5.5.7 Review of radiographic sensitivity and techniques.- A radio- types : Eastman Kodak Company, Types AA, T, and M. E.I. Dupont De Nmours . (Commer- cial- equipment is defined as unmodified equipment which is cataloged and avail ab1 e. for purchase by the general pub1 ic) Contractor designs
36、 shall include appropriate operating instructions, cal ibration procedures and maintenance procedures. Commercial equi pent shall be ful ly .descri bed by catalog listings or other means which provide sufficient information to permit identification. and evaluation by the Government and may include i
37、llustrations and engineering data. Designs shall be prepared for any special fixture(s) required to be used with commerciaT equipment, or with SIE designs if not otherwise covered. 6.4.3 Submission of designs for approval .- Contractor designs shall be approved by the Government prior to fabricating
38、 or procuring the-equip- ment. Designs shall be submitted for approval in accordance with the stipulations, time frame and distribution specified in the Contract Data Requirements Lists (DD Form 1423). equipment designs is permissible and encouraged, However, the completion date for design review wi
39、ll be based on the date of the final submission of designs and the required delivery schedule as stipulated in the contract. Partial submission of inspection . .i Licensed by Information Handling ServicesMIL-P-b3226 13 9 9999906 0345871 9 - - - - - I. 1 . MIL-P-63226(AR) Table I, . - Cona Numb 1 5 2
40、 3 4 4 i) 5 6 tl - tor To 5 1 5 5 5. Case i1 18 MARHEAD SECTION RESISTANCE _- . Funct i on Fi re Dgtonator to Fuze Ground Fuze Ground to Fire Detonator Expl os i ve Actuator Squi b Dri ve Squib Ground to Fuze Ground Charge Detonator Capacitor to Fuze Ground to Fuze Ground Wire to Case .-. Continuity
41、 (End-to-End) Wire to Wire Vire to Warhead Body 6 thru 18 6 thru 18 Res i stance . 320K ohms to 400K ohms 50K ohms to 90K ohms 4,O to 12.2 ohms O to 1 ohms 900K ohms min 30 seconds Open Circuit mum after 20 meohms) as specified on drawing 9307046 .Open Circuit 020 megohms) Open Circuit (920 megohms)
42、 . Table II . CRACK AND CAVITY CRITERIA . S eqmen t Characteristic A 6 C Sum of Projected Areas of Cavities (sq inch) 1/8 3/8 1/4 Projected Dimensions of Any Cavity (inch) . 3/8 5/8 1/2 I 4 3 2 i. Maximum Number of Cracks Al lowed I Licensed by Information Handling Services- MIL-P-63226 13 9999906 0
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