AIR FORCE MIL-W-38461C-1982 WEBBING NYLON AIRCRAFT ARRESTING《飞机阻拦尼龙织带》.pdf

1、NIL-W-38463C 37 M 7799706 0395747 2 W j- D/-2/ MIL-W-38461 C( USAF) 23 July 1982 SUPERSEDING MIL-W-38461 B(USAF) 15 August 1972 MILITARY SPEC I FICAT ION WEBBING, NYLON, AIRCRAFT ARRESTING This specification is approved for use by the Department of the Air Force, and is available for use by all Depa

2、rtments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers two types of nylon and one type of nylon/polyester webbing for use in landbased aircraft arresting systems. 1.2 Classification. The webbing shall be of the following types, as specified (see 6.2). The ty

3、pes shall be for use with the designated arresting systems. Type I - BAK-l2/B32A Type II - BAK-l3/F48A Type III - BAK-l3/F48A (Center Pick) 2. APPLICABLE DOCUMENTS 2.1 Government documents. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in impr

4、oving this document should be addressed to the Air Force Wright Aeronautical Laboratories, MLSA, Wright-Patterson Air Force Base, Ohio 45433, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. FSC 1710 Provided

5、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-384bLC 17 97777Ob 0195748 MIL-W-38461 C( USAF) 2.1.1 Standard and drawings . Un1 ess otherwise specified (see 6,2), the following standard and drawings of the issue listed in that issue of the Department

6、of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation, form a part of this specification to the extent specified herein. STANDARDS FEDERAL FED-STD-191 Textil e Test Methods DRAW I NGS E.W. Bliss Company Sewing Requi rements , BAK-13 52-D-844, Revision A E.W. Bliss C

7、ompany P-574 E.W. Bliss Company P-311 Shipping Reel Shi ppi ng Reel (Copies of standards and drawings required by manufacturers in con- nection with acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.1.2 Other Government publications.

8、 The following other Government document forms a part of this specification to the extent specified herein . FEDERAL TRADE COMMISION Textile Fiber Products Identification Act, Effective March 3, 1960, (Copies may be obtained without charge from the Federal Trade Com- missions Washington, D.C. 20580.

9、) 2.1.3 Order of precedence. text of this specification and the references cited herein, the text In the event of a conflict between the of this specification shall take precedence. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-38463C 17 77

10、97706 0375747 b MIL-W-38461 C(USAF) 3. REQUIREMENTS 3.1 Yarn. The yarn used shall be as follows: Types I and II - 840 or 1260 denier, bright, high-tenacity, light and heat resistant polyamide prepared from hexamethylene diamine and adipic acid or its derivatives and have a minimum mel ttng point of

11、4720 F (2440 C) Type III Ground, Binder, and.Stu7fer - 1260 denier, bright, high- tenacity, 1 ight and heat resistant polyamide prepared from hexamethylene diamine and adipic acid or its derivatives and have a minimum melting point of 472OF (244%). Filling 1000 or 1100 denier, polyester fiber identi

12、fied as polyethylene glycol terephthalate with a minimum me ting point of 472OF (244OC). 3.1.1 Ply and twist. The final ply of yarn, as specified in Tab shall be twisted together in one operation. e I, 3.2 Resin treatment. 3.2.1 Resin. The resin used to treatthe webbing shall consist of polyvinyl bu

13、tyral plasticized with butyl ricinoleate and applied by water dispersion. Fine carbon black shall be added to the resin to produce a uniform black color. 3.2.2 Extractable matter. The extractable matter from the resin treated webbing shall be from 3.1 to 8.5 percent by weight, when tested as specifi

14、ed in 4.6.3. - - 3.3 Color. The color of the webbing, after resin treatment, be black. 3.4 Construction and physical properties. The finished Webb conform to the requirements of Table I. 3.4.1 Sewed loops - type II and III only. shall ng shall 3.4.1.1 Breaking strength. The loops for Types II and II

15、I webbing, one loop on each end, shall be sewed in accordance with E,. Bliss Company Drawing 52-D-844. Three (3) of five (5) test specimens thus prepared shall have a minimum breaking strength of not less than 110,000 pounds each and the other two test specimens shall have a minimum breaking strengt

16、h of not less than 100,000 pounds each. 3.4.1.2 The maximum width of the sewed loop shall be no greater than 8-1/8 inches at any point along the entire length of the loop. Any roll not meeting this requirement is not acceptable. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted

17、without license from IHS-,-,-MIL-W-38461C 17 W 9797706 0275750 2 MIL-W-38461 C (USAF) 3.5 Weave. The weave for Types I, II, and III shall be as shown in Figures 1, 2, and 3 respectively. 3.5.1 Edge wear markers. There shall be 2 yellow marker ends in the center of each selvage stuffer as shown in Fi

18、gures 1, 2, and 3. The yellow marker shall be a 840/5 ply for types and III and 840/7 ply for type II. The marker yarns shall be solution dyed nylon or yarn dyed polyester to cable No. 65023, Color Association of United States, Incorporated, 200 Madison Avenue, New York, NY 1001 6. 3.6 Length of rol

19、l. The length of roll shall be as specified by the procuring activity. 3.7 Fiber identification. Each roll of webbing shall be labeled, ticketed, or invoiced for fiber content in accordance with the Textile Fiber Products Identification Act, effective 3 March 1960. 3.8 Stiffness. The angle subtended

20、 by the verticle distance drop of the end of a 36 inch length of webbing when extended 16 inches beyond the edge of a horizontal surface shall not be greater than 35 degrees when tested in accordance with 4.6.4. 3.9 Workmanship. The finished webbing shall be clean,. evenly woven, and shall conform t

21、o the quality and grade of product established by thi s specification . 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of al 1 inspection requirements as specified here

22、in. Except as otherwise specified in the contract or purchase order, the contractor may use.his own or any other facilities suitable for the performance of the inspection requirements specified herejn, unless disapproved by the Government. The Government reserves the right to perform any of the insp

23、ections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 Qual ity conformance inspection. The quality conformance inspection shall consist of the examinations and tests specified herein. The manufacture

24、r shall examine all webbing prior to resin teatment for 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-38Llb1C 17 7779706 0175751 MIL-W-38461 C( USAF) O O O r- +I ln d m O O0 O0 OW c3Cu o,? FF O O v) ln QI . F L O :i 7 W Col- .-F +I a ln I h

25、 c F LL On O- UU au aJU n L- L LaJLaJ aJ *P aJ C 5 Er E EaJEaJ O0 bN*N Cor03r mCumCu omam YUUU O O O - +I O e m O O0 O0 Ov) mCu o,? FI- O O v) m r- LL On O- I O Wl- 037 o o o n In C O0 O0 O0 mm O01 -m c wuwv mCumCu n E *C E U h .r W E E n x Iu E U U * c o E: v) u n E .I- U E n L *C c .r L aJ cc u lu

26、 L o c U L aJ Y L E“ 8 r c aJ a- 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-38461 C( USAF) U aJ 3 E .r L E O o I . 3 E E QI L O (u L - a r- CCI U VI c 0 c: E c,r aJ w3 c,c, lu *I- K id aJc 2b Ec, a FaJ i-L om 6 Provided by IHSNot for Res

27、aleNo reproduction or networking permitted without license from IHS-,-,-cn -W-3!V63C 37 706 0375753 - Y K a E O I- * a a U W n m z Ii cn a cv n Z O K (3 i cn a d cn a n z 3 O K (3 cn a K W U U 3 I- cn 2 (3 a W 2 n m I U W Y Oe z a O l l W ). MIL-W-38461 C( USAF -4+- X Cu X cv 7 w o, * I- l i a (9 W

28、W a 3 . f Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-w Y U 5 a O I- MIL-W-3YbLC 37 W 777770b 0375754 T W MrL-N-38461 C( USAF) F- U W F n Z O U U W z n Cu U w P z I 8 tl W e * t- I s U (3 a a n a 3 L W W . Cu at? =I cn L L .- I Provided by IHSNot

29、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-34bIC I7 3377706 0375755 I W u) 2 W n cn z w n u) P Z w O cn z W O n cn Z w n MTL-W-38461 C( USAF) aaaa ww zzzzz 9 - x c3 4- + X o) v) + + x c3 4 Provided by IHSNot for ResaleNo reproduction or networking permitted

30、 without license from IHS-,-,-MIL-W-3846LC 17 M 7777706 01175756 3 M MIL-W-38461C(USAF) critical defects and for overall clean1 iness to insure uniformity of resin application. Any contamination which may interfere with the level of resin application shall be removed before processing. 4.3 Yard-by-y

31、ard examination. The sample size shall be examined on both sides prior to the resin treatment and visual defects clas- sified as listed in Table II. All defects found shall be counted regardless of their proximity one to another, except when two or more defects represent a single local condition of

32、the webbing, in which case only.the more serious defect shall be counted. A con- tinuous defect shall be counted as one defect for each warp-wise yard or fraction thereof in which it occurs. .The sample unit for this examination shall be one linear yard. The lot size shall be expressed in units of o

33、ne linear yard. There shall be no more than five tapes in any one lot. The sample size shall be in accordance with inspection level III of MIL-STD-105. The acceptable quality level (AQL) shall be 1.0 defects per hundred linear yards for major defects, and 2.5 defects per hundred yards for total (maj

34、or plus minor) defects. The lot shall be unacceptable if one or more critical defects appear in the sample. For any clearly visible defect not described in Table II a.classification shall be made by the contractor according to the severity of the defect and shall be subject to .approval by the Gover

35、nment. 4.4 Examination for compliance with Textile Fiber Products Identi- fication Act. Each roll of the webbing shall be examined for con- formance to the Textile Fiber Products Identification Act. 4.5 Test conditions. A producer may elect to conduct physical tesging gnder other than standard labor

36、atory conditions of 70 2 2OF (21 t 17 C) and 65 + 2 percent relative humidity. However, the Government reserves-the right to specify testing conditions in cases of dispute or whenever deemed necessary to assure conformance to physical requirements. 4.6 Testing of the end item. FED STD 191, wherever

37、applicable, as listed in Table III, 4.6.1, 4.6.2 and 4.6.3 shall be followed. Conformance for width and thick- ness shall be based on a single determination. sample of webbing-to conform to the requirements of section 3 shall be cause for rejection of the roll. The methods of testing specified in Fa

38、ilure of any 10 t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-3Llb1C 17 m 9Ob 0175757 5 m MIL-W-38461 C( USAF) TABLE II. Classification of defects. Description Critical Major Minor Defects Abrasion marks Broken or miss- ing pick Broken or m

39、iss- ing end(s) Resulting in broken filaments greater than 1 inch in any direction and to the degree sufficient to obscure the identity of an individual yarn. Resulting in broken filaments 1 inch or less in any direction and to the degree sufficient to obscure the identity of an individual yarn. Occ

40、urring separately or in combination for two or more adjacent picks on the same side of the webbing. Occurring separately or in combination two or more picks not adjacent in 1 linear yard on the same side of webbing. Single pick regardless of frequency. Two or more adjacent ends exceeding 6 inches in

41、 length or single end exceeding 12 inches in length. Two or more adjacent ends less than 6 inches but longer than 3 inches in length or a single end less than 12 inches but longer than 6 inches in length. Two or more adjacent ends less than 3 inches in length but exceeding 1 inch ora single end less

42、 than 6 inches but exceeding 1 inch. X X X X X X X X 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-W-384bLC 17 979990b O195758 7 1 MI L-W-38461 C( USAF) TABLE II. Classification of defects. - Continued. Defects Description Cri tical Major M

43、inor Coarse or 1 i ght filling bar Cut, hole (minimum of 1/8 inch away from edge) Edge loopy Resulting in visible differ- ence in thickness of webbing extending for more than 1/2 inch in the length direction over more than 50% of the width. Resulting in visible differ- ences in thickness of webbing

44、extending for more than 1/4 inch but less than 1/2 inch in the length direction over more than 50% of width. Resulting in visible differ- ences in thickness of webbing extending less than 1/4 inch in the length direction over more than 25% of the width. Resulting in exposure of stuffer yarns. Clearl

45、y visible on more than two ends and extending over 9 linear inches or more, Forming loops greater than 1/8 Inch diameter within 1/4 inch of the edge for 2 linear inches or more. Forming loops greater than 1/8 inch in diameter within 1/4 inch of the edge for more than 1/2 inch but less than 2 linear

46、i ne hes. X X X X X X X 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-384bLC 17 7777706 0175757 7 MIL-W-38461 C(USAF) TABLE II. Classification of defects. - Continued. Defects Description Critical Major Minor Edge cut, torn or frayed F1 oa

47、ts or skips Jerked in, fi 11 ing, slough-off, slug Ki n ks Knots Mi spick, double p ck Complete separation of two X or more yarns within 1/8 inch of the edge. Complete separation of one yarn within 1/8 inch of the edge. Multiple, 1/2 inch or more in combined warp and filling direction or single floa

48、t 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 l/2 inch, but not exceeding 1 inch, if in warp, or more than 1/4 inch of the width, but not exceeding 1 inch, if in filling. A clearly visible loop of filling pulled in at edges. More than three in any 9 linear inches. More than one knot in any 5 1 i near i nc hes. Two or more across full width. Single across the full width. X X X X X X 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,