1、MIL-T-L52LA 3 7973906 0404887 2 i f.3 t LI . ; 21, April 1969 SUPERSEDING MIL T- 8 15 2 l(AS) 2 March i967 LITARY SPECIFICATION TAPE, TEXTILE, NYLON, LANDBASED ARRESTING GEAR, 7 INCH This specification has been approved by the Naval Air Systems Command, Department of the Navy. 1. SCOPE 1*1 This spec
2、ification covers the requirements of a 7 inch nylon tape -having a breaking strength of not less than 70,000 pounds. * 2. APPLICABLE DOCUMENTS 2.1 . The following documents of the issue in,effectDn date of invitation -for bids -or .request for proposal, form a-part of the specification to the extent
3、 speci- fied herein. SPECIFICATIONS *Federal CCC-T- 19 1 -Textile Test Methods . Military MILB-13239 Barrier Material, Waterproofed, Flexible, All Temp er ature Barrier Material, Greaseproof, Waterproof, Flexible, High Strength NJIL-B-81374 STANDARDS Military Ml L-STL- 10 5 Sampling Procedures and T
4、ablcs or Inspection by A ttr ibutos MIL-STD- 129 Marking for Shipment and Storage - . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIbT-81521A (AS) DRAWINGS Naval Air Engineering Center 3506730 _Tape Reel Assembly, Tape Installation Method (i In
5、ch Tape) 508306 .Reel, Tape Assembly (When requesting specifications, standards, and publications, refer to both title and number. Copies of this specification and applicable documents may be -obtained upon application to the Commanding Officer, Naval Publications and Forms Center, 5801 Tabor -Avenu
6、e, Philadelphia, Pennsylvania 19120 All other documents should be obtained from the procuring activity or as directed by the contracting officer. ) - .- 2.2 - Other publications - The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, th
7、e issue in effect on date of invitation for bids or request for proposal shall apply. -Rules and Regulations under the Textile Fiber Products identification Act, (Application for copies should be addressed to-the Federal Trade Commission, -Washington, B. C. 25380. ) U.S. Air Force Specification Bull
8、etin No. 90 Color Codes Manufacturers identification, Nylon Webbing. (Application for copies should be addressed to the procuring activity or as directed by the contracting officer, ) 3, -REQUIREMENTS 3.1 .Materials - * -3.1.1 Yarn - The yarn used in-the manufacture of the tape shall be 840 denier,
9、8.5-grams per denier minimum, continuous 140 filament, bright, high-tenacity; light and heat resistant nylon. 4t shall be -a-polyamide prepared -from hexamethylene diamine and adipic acid, or its derivatives, and shall have a minimum melting point of -244“ C. Yarn designed for cordage use is not per
10、- mitted in ground and binder warps. The yarn shall be substantially free from sizing, loading, or other adulterants, and shall not be bleached in my mmer or by any-process. . . 2 ,-. - . . I_ -I_ . f- a ( I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH
11、S-,-,-MILT- 8 1521A (AS) - -_ -_ 3.2 3.3 -Weave - The weave shall be as shown iP Figure 1. - Color - The color of the tape shall be black as produced by *he finishing treatment. 3.4 Construction and physical properties - The finished nylon iape, after resin treatment, shall conform to the constructi
12、on and physical properties of Table I. TABLE I PHYSICAL PROPERTIES Breaking Strength, pounds (min) Ends inwarp (min) Ground -Binder - Muffer Filling, yarns per inch (min) Yarn ply (min) .Ground -Binder Stuffer . Filling . REQUIREMENT 7. O *O. 062 O. 192 rcccpCrince numbcr shall be zcro defects. For
13、major defects the AQL shall bc 2.5 defects per 100 units and 10. O total defects per 100 units (i. e. yards). . I / -. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-152LA 83 777770b 0404877 5 m. DEFECTS Abrasion Marks Broken or Miss- ing End
14、Broken.or Miss- ing Pick Coarse or Light Filling Bar -Twist or Dis- 3ortion Cut, Hole or Tear Drop- Ply TABLE III CLASSIFICATION OF DEFECTS *“DESCRIPTION Resulting in-rupture of yarns, or in nap sufficient to obscure the identity of any yarn exceeding 10 -per- cent of width or one inch in length. Tw
15、o or more regardless of length of a single end ex- -ceeding 6 inches in length. Single end under 6 inches bul exceeding 1/4 inch. Two or moreTegardless of extent. . NOTE: The filling die-in or jointing shall not be-construed as a defect of -any nature. Resulting in visible differ- ence in stiffness
16、or thick- ness of tape and extending for more than 1/4 inch or less in the =length direction. Tape willaot layflat upon :zpplication of manual -pressure due,to-twist -or distortion. Any cut, Thole or tear. Clearly visible on more than two ends within same -length and extending over 9 linear inches o
17、r more. 11 RITIC AL X X X X X MAJOR MINOR X x X Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MtL-T- 8 152 IA (AS) TABLE II (Continued) CLASSIFICATION OF DEFECTS DEFECTS Cdge Loopy MgeCut, Torn )r Frayed Ege Scalloped Floats -or Skips Hitchback, Cr
18、ack, pen-rplace Jerked-In, Filling Slough-Off, Slug Kinks Knots -DESCRIPTION Forming clearly visible filling loops, or edges tied loosely to body of webbing for 2 linear inches or more. Clearly visible along edge. Any indentation of edges above allowable tolerances. Nultiple, 1/2 inch or more in com
19、bined warp and filling direction or single -float or skip over more than 1 inch. Multiple, less than 1/2 inch in combined -warp or filling directions or single float or skip over more than 1/2 inch, but not exceeding linch if in warp, or more than 1/4 inch of ihe width but not exceeding 1 inch, if i
20、n filling. -Clearly visible -opening be- - tween adjoining picks, or -warpwise tension area over =part of the width resulting -in visible light and heavy place. A charlyvisible loop of f illing pded in at edges. More than 3 inany 9 linear inches. More than 1 knot in any 5 linear inches. One knot eve
21、ry 2 yards with un- trimmed ends extending from surface of tape. ZRITICA L X X X /.( 12 3 ZAJOR x X X 1IINOR X X -. - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-81521A 83 9799706 0404879 9 DEFECTS Mispick, Double Pick Slack End Slub or Sla
22、g, Gout .Smash .-Spot,-Stain or -Streak Wrong Draw Identification Threads 4.5.4.2 . Mf&T-81521A(AS) TABLE IH (Continued) CLASSIFICATION OF DEFECTS - DESCRIPTION Two or more across the full width. Single across the fullwidth. Two or more in the same length, jerked inbetween picks, orforming clearly .
23、 :visible loops on the sur- face. More than hice the thickness of the yarn (or ply, if plied). - Any -smash -Any clearly visible dirt, -rust, grease, -oil, spot, stain or streak. Extending for more than 9 inches. . Xi splaced. Missing. . _ CRITICAL x X X MAJOR X X MINOR X X X Overall - Examine-requi
24、red samples for finish, odor and cleanli- -=ness. The finishmust be equal to the approved sample -(when available) see 6.4). - There must not be any objectionable odor and the samples must be clean. 4.5.4.3 Examination of preparation for deliveryrequirements - An examination shall be made Ao determi
25、ne that packaging, packing and marking be scored in accordance with the Eist below. The sample-unit shall be one shipping container fully prepared for delivery with the exception that it need not be sealed. Defects of closure listed below shall be examined on shipping containers fuIly prepared for d
26、elivery. The lot size shall be the number of shipping containers in tho cnd itcni inspection lot. 4. O defects per 100 units, -&requirements of Section 5 of this specification are complied with. -Defects shall ThcInspectton Leiel shallbc S-2 and AQL sh:tll be Provided by IHSNot for ResaleNo reproduc
27、tion or networking permitted without license from IHS-,-,-sequence, or met Any component missing. Any component damaged, affecting serviceability. Inadequate application of com- 4.6 Denier and filament - An affidavit from the yarnmanufacturer will be _acceptable as proof that denier and filament req
28、uirement are met, 5. PREPARATIONFOR DELIVERY 5.1 . Packaging - Not applicable. 5.2 * Packing -The tape -shall be installed on a reel as-shown on NAEC .drawing BS06730. The reel shall be manufactured as shown on NAEC drawing 508306, identified as-Part Number 508306-3 for lengths specified in 3.5. -Wh
29、en installifig tape on .reel, -it .shail be installed over barrier material conforming to MILB-81374 or MILB-13239, Type B-2, Class 1, Grade A, The barrier material shall also cover the sides of the tape reel4inside of the shipping reel) with two additional feet of paper in excess of the reel side d
30、iameters to permit sealing the two sides together all around the reel (see Figure 2). The additional barrier material shall permit the opening and re- .sealing of the barrier paper if examination of or work on the tape is required. Sealing process for barrier material shall not injure the tape. Afte
31、r installing the tape on reei-and covering with barrier material, -wooden lagging shall be installed around edge of reel, as shown on NAEC-drawing B506730. . - - 5.3 Marking - Each reel-shall be durably and legibly marked as follows: TAPE, TEXTIIX, -?NYLON, LANDBASED ARRESTING GEAR Specification MIZ
32、r T- 81521A (AS) Width Yardage Manuf:lcturers Identification Number for the material Contruct or Order No, Stock No. Date of Manufacture Name of Supplier Name of Manufacturer (ifnot the same as supplier) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
33、,-MIL-T-1523A 3 777770b 0404703 3 SEBL ALONG ENDS BARRIER PAPER NYLON TAPE REEL SIDE -SECTION A-A NIL-T- 8 1521A(AS) - =plA F REEL SIDE .%: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-in addition, each reel shdll bemaske for shipment in accordanc
34、e with MIbSTD-12 9. 60 NOTES 60 3. intended use + The nylon tape covered by this specification is intended for use in landbased ahraft arresting gear. G. 2 following: Ordering data - Procurement documents should specify the (a) Title, %umber and date of this specification, (b) Quantity desired. (c)
35、Manufacturer s ident i fi cat ion . (d) Color -required if other than specified in 3.3. (e) Length of roll-require (1375 feet or 1500 feet), 6.3 are available on-application to Commanding Officer, Naval Air Engineering Center, Attn: NE-7, Philadelphia, _Pennsylvania 19112 for drawing 505102. 6.4 .-
36、- Specificationsrand drawings -of the _test grips -required in testing ! Marginal notations - The .margins of this specification are marked with an asterisk to indicate where changes-(deletions, additions, etc.) from the previous issue were made. This was done as a convenience only and the govern- m
37、ent assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the Tequirements af this docu- ment based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Custodian : Nayy- AS Preparing activity: DOD Project No. 8315-N140 Navy - AS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
