1、MIL-R-24536 40 W 3779706 0104b40 2 m g-m-oy - MIL-R-24536(SH) 18 April 1978 MILITARY SPECIFICATION ROPE, FIBROUS, WUBLE-BRAIDED, CONTINUOUS POLYESTER FILAMENT WITH A STAPLE WRAP This specification is approved for use by the Naval Sea Systems Command and is available for use by all Departments and Ag
2、encies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers fibrous double-braided polyester rope, continuous 1.2 Classification. The rope shall be furnished in one type and in the circumference polyester filament, with a staple wrap cover and filament polyester core. specifie
3、d (see 6.2.1). 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following docments, of the issue in effect on date of invitationforids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS FEDERAL UU-T-81 - Tags, Shipping and Stock. MIL-C-3131
4、- Cordage: Preparation for Delivery of. MIL-L-17672 - Lubricating Oil, Hydraulic and Light Turbine, Noncorrosive. MILITARY STANDARDS FEDERAL FED-STD-191 - Textile Test Methods. MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. (Copies of specifications, standards, d
5、rawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 3. REQUIREMENTS 3.1 Sample for first article ins ection. When specified (see 6.2.1), prior to beginning produ
6、ction, a finepl besubmitted to the contracting officer or his designated representative in accordance with the following requirements for inspection as specified in 4.1.1. A continuous length of 50 feet shall be submitted. filament, heat and light resistant polyester fiber of at least 7.0 grams (9)
7、per denier strength. braid shall be fabricated from white 100 percent polyester yarn HD bright type 77 or equal, of at least 7.0 g per denier strength. 3.2 Materials. The inner braid shall be fabricated from bright white virgin, continuous Material requirements shall be determined in accordance with
8、 4.2.1. The outer Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Ship Engineering Center, SEC 6124, Department of the Navy, Washington, DC 20362 by using the self-addressed Sta
9、ndardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. FSC 4020 THIS DOCUMENT CONTAINS y PAGES. Licensed by Information Handling ServicesMIL-R-24536 (SH) 3.3 Construction. The rope shall conform to the requirements specified herein. It shall be
10、of double braided construction, wherein a braid of hollow structure manufactured in a separate operation shall serve as the core, while a cover is braided over it in a second operation. In the manufacture of each braid, one-half of the yarns shall have an “So twist, while Z“ twist shall be employed
11、in the remaining yarns. The texture of the ultimate rope shall be firm and shall exhibit no undue sleaziness. 3.3.1 All core yarns shall be one size and all cover yarns shall be one size. The number of carriers and the ends per carrier for the respective inner braid and the outer braid shall be in a
12、ccordance with tables I and II. The weight of either constituent (the core or the outer braid) shall not exceed 55 percent of the total weight of the rope for any designated size. TABLE I. Structural requirements for inner braid (core). I Multiplier for use picks per inch- of in determination of 2/
13、Type of Cores for use in ropes of indicated circum- ference size if not, it is cause for rejection of the lot. representative may be removed from the rope and tested in accordance with 4.2.5.4.2. each tensile specimen in the spliced, relaxed condition. The specimen shall be tensioned to load “Pi spe
14、cified in table III. The elongation under this tension shall be measured for each breaking strength specimen, averaged to the nearest 0.1 percent and recorded as value “e“ for use in determining the length per pound (see 4.2.5.3). The elongation at the break- ing point shall be determined and calcul
15、ated to percent, as specified in method 6015 of FED- CTD-191 with the gage length obtained under the tension of load “P“. 4.2.5.5.1 The autographic recording obtained for each specim.en while conducting the breaking strength test may be employed as an alternate method in determining the breaking elo
16、ngation when industrial safety regulations will not permit use of the method described above. with chloroform or other suitable solvent shall be used in this determination. The procedure outlined in method 2611 of FED-STD-191 shall be followed. 4.2.5.7 Determination of cover to core ratio. A 2-foot
17、specimen shall be cut off, This sample 4.2.5.4.3 Any braider splice appearing too unsightly in the opinion of the Government 4.2.5.5 Determination elongation. A 20-inch gage, minimum, shall be marked off on 4.2.5.6 Extractable matter. An extraction procedure, employing the Soxhlet apparatus, after w
18、hich the cover shall be separated from the core. separately and the percentage of each by weight shall be determined for compliance with the requirements of 3.3.2. The cover and core shall be weighed 4.2.5.8 Determination fastness of rinted matter of the identification marker to salt water and miner
19、al oil. Three lengthc :f the m-azroXimately 1-1 2 feet each, one ofhichiTb-nedas a control, will be employed in this determinacion. Immerse one length for two hours in synthetic sea water composed of 3.0 percent sodium chloride and 0.5 percent anhydrous magnesium chloride. Soak the remaining length
20、for 2 hours in mineral oil conforming to Military Symbol 2075-FH of MIL-L-17672. shall be considered satisfactory when no perceptible change in color or in le-ibility is noted during a visual comparison of the exposed specimens with the control specimen following removal from the respective environm
21、ents. The fastness of the printed matter 5. PREPARATION FOR DELIVERY (The preparation for delivery requirements specified herein apply only for direct Government procurements.) 5.1 Packaging, ackin markin . Rope in the quantity and on reels as specified (see 3.9) shall be paEkagedleve1 A or $, packe
22、d level A, B or C as specified (see 6.2.1) and marked in accordance with MIL-C-3131. Licensed by Information Handling ServicesMIL-R-24536 40 W 9999906 OLOqb48 7 W MIL-R-24536 (SH) 6. NOTES 6.1 Intended use. The rope covered by this specirication is intended for use in high line personnel trancfer an
23、d other applications that require maximum gripping surface and minimum elongation, while maintaining maximum breaking strength. 6.2 Ordering data. 6.2.1 Procurement requirements. Procurement documents should specify: (a) Title, number, and date of this specification. (b) Circumference (size) require
24、d (see 1.2 and table III). (c) When first article sample is required (see 3.1 and 4.1.1). (d) When information on identification marker is other than specified (see 3.8). (e) Put-up and length when other than specified (see 3.9). (f) Selection of applicable levels of packaging and packing (see 5.1).
25、 (9) shortened or cut for test specimens, if in complete compliance with this specification. (h) That this rope will be purchased on a price-per-pound basis (net weight). 6.2.2 Data requirements. When this specification is used in a procurement which invokes the provision of the “Requirements for Da
26、ta“ of the Armed Services Procurernent Regulations (ASPR), the data identified below, which are required to be developed by the contractor, as specified on an approved Data Item Description (DD Form 1664), and which are required to be delivered to the Government, should be selected and specified on
27、the approved Contract Data Requirement List (DD Form 1423) and incorporated in the contract. When the provisions of the “Requirements for Data“ of the ASPR are not invoked in a procurement, the data required to be developed by the contractor and required to be delivered to the Government should be s
28、elected from the list below and specified in the contract. Paragraph Data requirements Applicable DID Option That purchaser will accept at orioinal weight, any unit which has been 4.1.1.1 First article in- UD1 -T -2 34 5 O 4.2.1.1 Certificate of DI -E-2121 spection report compliance (Copies of data
29、item descriptions required by the contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracthg officer. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply.
30、) 6.2.2.1 The data requirements of 6.2.2 and any task in section 3, 4, or 5 of the spec- ification required to be performed to meet a data requirement may be waived by the procuring/ purchasing activity upon certification by the offeror that identical data were submitted by the offeror and accepted
31、by the Government under a previous contract for identical item procured to this specification. This does not apply to specific data which may be required for each procurement regardless of whether an identical item has been supplied previously (for example, test reports). moisture wil: be accepted b
32、y an adjustment in weight to the 5 percent moisture basis. 6.3 Adustment for ha moisture content. Material furnished cntaining an excess of 6.4 First article inspection. 6.4.1 Invitations for bids should provide that the Government reserves the right to waive the requirement for samples for first ar
33、ticle inspection as to those bidders offering a product which has been previously procured or tested by the Government, and that bidders offering such products, who wish to rely on such production or test, must furnish evidence with the bid that prior Government approval is presently appropriate for the pending pro- curement. Preparing activity: Navy - SH (Project 4020-NOll) *US. GOVERNhlENT PRINTING OFFICE 1978 -703-122/1983 9 Licensed by Information Handling Services
