1、MIL-L-853117A 42 W 777770b 02361165 I MIL-L-85347A(AS) 18 December 1986 SUPERSEDING 3 December 1980 MIL-L-85347(AS) MILITARY SPECIFICATION LIFE PRESERVER, INFLATABLE, CEMENTED AIRCREWMAN (WITH ARAMID CASING), TYPE LPU-23B/P This specification is approved for use within Naval Air Systems Command, Dep
2、artment of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers requirements for one type of aircrewman inflatable life preserver without automatic inflation device des i gnated as Type LPU-23BfP. 2. APPLICABLE
3、 DOCUMENTS 2.1 Government documents 2.1.1 Specifications, and standards . The following specifications, and standards form a part of this specification to the extent Specified herein. Unless otherwise specified, the issues of these documents shall be those . listed in the issue of the Department of
4、Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation. SPEC1 FICATIONS Federal UU-P-268 - Paper, Kraft, Wrapping UU-T-81 - Tag, Shipping and Stock PPP-B-636 - Box, Shipping, Fiberboard P P P-T-7 6 - Tape, Packaging, Paper, (For Carton Sealing) Mi 1
5、i tary MIL-P-116 - Preservation-packaging, Methods of MI L-C-19002 - Cloth, Coated, And Tape, Coated Cloth- MIL-1-231 45 - Inflation Assemblies, Life Preserver polychloroprene On Nylon, Pneumatic Life Preserver Beneficial comments (recommendation, additions, deletions) and any pertinent data which m
6、ay be of use in improving this document should be addressed to: Commandi ng Off i Cer, Naval Air Engi neeri ng Center, Sys terns Engi neeri ng and Standardization Department, (SESD,(Code 93), Lakehurst, NJ 08733-5100 by usina the self-addressed Standardization Document Improvement Proposal (Do Form
7、1426) appearing at the end of this document or by letter. I THIS DOCUMENT CONTAINS 31 PAGESA AMSC - NIA FSC 4220 DISTRIBUTION STATEMENT A. Approved for pub1 ic release; distri bution is un1 imi ted. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flI
8、L-L-85397A Li2 7797706 02369bb 3 MI L-L-85347A(AS) SPECIFICATIONS (Continued) Mi 1 i tary (Continued) MIL-C-25369 - Cylinders, Carbon Dioxide, For Inflation MIL-0-81375 - Oral Inflation Assemblies, Survival Equipment, MIL-C-81814 - Cloth, Twi 11, Aramid, High Temperature Resi stant MIL-H-85478 - Han
9、dle, Beaded, Inflation Assembly of Pneumatic Life Preservers. Inflatable STAN DARDS Federal FED-STD-751 - Stitches, Seams, and Sti tchi ngs Mi 1 i tary MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes MIL-STD-129 - Marking for Shipment and Storage MIL-STD-130 - Identificatio
10、n Markings of US Mi li tary Property 2.1.2 Government drawings and pub1 i cations. and publication 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 the solicitation, DRAW I NGS The fol lowing Government d
11、rawi ngs Naval Air Systems Command . 68A73D21 - Life Preserver Assembl Y Index, Inf 1 atabl e Ai rcrewmen. 68A73H1 68A73D2 68A73D3 68A73H4 68A73H6 68A7307 68A73D8 68A73C9 _- - Type LPU-23B/P Cemented, Type LPU-21C/P and Type LPU-23B/P - Life Preserver Assembly, Aircrewmen, Inflatable, Aram - Pouch A
12、ssembly, Dye Marker - Pouch Assembly, flare - Flotation Assembly, Type LPU-ZlC/P and Type LPU-236/P - Bladder Assembly, Flotation - Attaching Item, Hardware - Patches, Assemblies, Flotation - Patches, Bladder 2 ai d, Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
13、e from IHS-,-,-MIL-L-85397A 92 W 7999906 0236467 5 W MI L-L-85347A(AS) DRAWINGS (Continued) Naval Air Systems Command (Continued) 68A73Cll - Identification Patch 68A73H12 - Patterns, B1 adder 68A73D19 - Baffle Assembly 62A119D1 - Oral Inflation Assemblies, Inflatable Survival Equipment 62A120H1 - Ma
14、nifold Stem Assembly and Details, For Life Preservers 67A319C15 - Patch, Inspection Record -67A319D18 - Check Valve Assembly 67A319D19 - Hardware, Harness, Details 975AS103 - Casing Assembly, Aramid, Type LPU-21C/P and Type LPU-23B/P 975AS105 - Main Panel Sub-Assembly, Casing 975AS106 - Back Panel S
15、ub-Assembly, Casing 975AS110 - Casing Detai 1 s, Mi scel laneous 975AS112 - Casing De tai 1 , Hardware 975AS118 - Pocket, Protective 975AS119 - Cover, Protective 975AS120 - Cover, Locking Pin 975AS121 - Handle, Beaded, Inflation Assembly 975AS200 - Casing Patterns, Type LPU-21C/P and Type LPU-23B/P
16、PUBLICATIONS NAVAL AIR SYSTEMS COMMAND NAVAIR 13-1-6.1 Aviation Crew Systems Manual Inflatable Survival Assembly of (Copies of specifications, standards, drawings and publications required by contractors in connection with specific acquisition functions should be obtained from the contracting activi
17、ty or as directed by the contracting activity.) 2.3 Order of precedence. In the event o,f a conflict between the text of this specification and the references cited herein (except for associated detai 1 specifications, specification sheets or MS standards), the text of this specification shail take
18、precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific excemption has been obtai ned. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-853LI7A 42 7779706 02364b 7 MI L-L-85347A(AS)
19、 3. REQUIREMENTS 3.1 Qualification. The Type LPU-23B/P aircrewmen inflatable life preservers furnished under this specification shall be a product which is qualified for listing on the applicable qualified products list at the time set for opening of bids (see 4.3, 4.3.1, 6.3 and 6.3.1). 3.2 First a
20、rticle. sample shall be subjected to first article inspection (see 4.4 and 6.4). 3.3 Materials and components. The materials and components shall conform to applicable specifications, standards, and drawings as listed or required herein. Unless otherwise specified in the contract, the manufacturer s
21、hall certify that the materials and components, except for the metallic parts used in the construction of the life preservers, shall have been manufactured not more than 18 months prior to the date of delivery of the life preservers (see 6.2.lj and 6.2.2). When specified in the contract or purchase
22、order, a 3.4 Design and construction. The design and construction of the LPU 1 ife preserver shall be in accordance wi th drawing 68A73D21. 3.4.1 Construction details. All details for the component parts and sub-assemblies, not specified herein, shall be in accordance with the app detai 1 drawings.
23、23BlP i cab1 e 3.4.1.1 Patterns. The casing for the life preserver shall be cut in strict accordance with the drawing 975AS200 furnished by the Government (see 6.2.3). The Government pattern shall not be altered in any manner and shall be used for making the working patterns. The working patterns sh
24、all be identical to the Government furni shed pattern drawing. 3.4.2 Inflatable compartments. The Type LPU-23BIP 1 ife preserver shall consist of two independent inflatable compartments. Each compartment shall be capable of being inflated mechanically with carbon dioxide and orally through an oral i
25、nflation valve and tube. The deflated flotation compartment shall be attached to and contained in a casing, which shall be worn around the waist, up the back, and around the neck. appearance to drawing 68A73H1. The life preserver in its casing shall conform in 3.4.3 Cut edges. All the cut edges of t
26、he uncoated nylon tapes (including the fastener tapes) and webbings shall be seared, prior to the fabrication of the life preserver, to prevent fraying. No sharp edges shall be formed. 3.4.4 Use of the adhesive. The color of the adhesive shall be natural (unpigmented). In all the cementing operation
27、s, the surface to which the adhesive is to be applied shall be thoroughly cleaned with a suitable solvent in such a manner that the dusting ,materials (zinc stearate or talc) or any other surface contaminants are removed. Care should be exercised to ensure that the coating and the base undercloth ar
28、e not damaged and the adhesion between both is not impaired in any way by prolonged exposure to the solvent. The solvent used shall evaporate completely prior to th leave no residue. Cemented areas shal excessive wrinkles. The adhesive shal or adhesive which has partly or comple of the adhesive shal
29、l be used at least manufacture. Containers for the adhes before be i ng ref i 1 1 ed . application of the adhesive and shall not contain trapped air, channels, or be controlled to ensure that old adhesive ely polymerized is not used. A fresh batch every eight hours during the course of ve shall be f
30、ree from congealed adhesive 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-85347A 42 7777706 0236469 7 MIL-L-85347A(AS 3.4.5 Cementing of the seams, seam tapes, patches, and attachments. construction of the seams and sealing areas and the at
31、taching of the seam tapes, patches, and attachments shall be accomplished by utilizing the technique and precautions outlined in 3.4.4 so that, prior to submission of the assembled life preserver, the adhesive shall have developed its optimum bonding properties and the adherence of all such seams, s
32、ealed areas, seam tapes, patches, and attachments shall comply with the requirements of this specification. Al 1 the seams, seam tapes, patches, sealed areas and attachments shall be secured by the adhesive as specified in the applicable drawings. The seams shall be covered on the inner and outer si
33、des of the life preserver, as applicable, with the seam tape, as specified in the applicable drawings. All the seam tapes shall be applied to the seams without tension and shall be applied so that an equal amount is on each side of the seam edge which it covers. The seams shall be formed without ten
34、sion and the patches and attachments shall be applied to the life parallel to the edges of the seam tapes, patches, and attachments and shall extend from just being visible to not greater than 3/8 inch beyond the edges of the seam tape, patch and attachment. The seam tapes which seal circumferential
35、 seams, or where one end of the seam tape comes in contact with the other end of the same seam tape or another seam tape, shall overlap on itself, at the ends, 314, plus 112, minus O, inch. The adhesive, when dry or cured, shall present a neat and uniform appearance. permitted to extend in such a ma
36、nner as to result in localized stiffness which might result in discomfort to the wearer, when the life preserver is deflated or inflated. tapes, patches, and attachments to shrink or pucker at any point on the life preserver. preserver to form stiff or hard needle points and all the edges around the
37、 entire periphery of the life preserver, both inside and out, shall be free from sharp points or ragged edges. the adhesive and spots or stains resulting from excess adhesive. The preserver without tension. The adhesive shall be applied in a straight line c t The adhesive shall not be allowed to rem
38、ain in clots nor The adhesive, upon drying or curing, shall not cause the cloth, seam The adhesive shall not be allowed to run over the edges of the life The life preserver shall be free from congealed masses of 3.4.6 Seams and stitching. No stitching shall pass through any air retaining compartment
39、. Sewing shaT1 only be used in the construction of the accessory parts but not in their final attachment to the life preserver. All the machine stitching in the accessory parts shall be accomplished with Stitch Type 301 FED-STD-751, eight to ten stitches per inch. Each row of stitching shall be stra
40、ight and parallel to the seam edge. The straightness of the stitching in any row shall be maintained within -a tolerance of plus or minus 1/32 inch. The ends of the stitching shall be backstitched, by overlapping on itself, not less than 1/2 inch. Thread breaks, skips, and run-Offs shall be overstit
41、ched not less than one inch. The thread tension shall be maintianed so that there shaT1 not be any loose or tight stitching and the lock shall be embedded in the materials sewn together. no seam shall be twisted, puckered, or pleated and no portion of the accessory parts shall be puckered, or pleate
42、d and no portion of the accessory parts.shal1 be caught in an unrelated operation and seam. All the thread ends shall be trimmed to a length of 114 or 318 inch. forced out and shall not contain any folds. the edges of the casing shall be visible. The seam edges shall be properly No cut end of the ny
43、lon tape binding 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-5347A 42 777770b 023b470 5 MI L-L-85 347A (AS 1 3.4.6.1 Bartacking. The number of stitches per bartack shall be based proportionally on 1.4 inch long bartack containing not less
44、 than 14 stitches. The length and loation of each bartack shall be as specified in the applicable drawing . 3.5 Attachment and connections. 3.5.1 Manifold stem and check valve. Each1 compartment of the flotation assembly shall contain a mai nfol d stem assembly, conforming to drawi ng 62A120H1 and a
45、 check valve assembly conforming- to drawing 67A319D18. - 3.5.2 Oral inflation assembly. The oral inflation assembly conforming to MIL-0-81375 shall be installed in each waist lobe of th life preserver flotation assembly as shown in drawing 68A73H6. The type, class and style shall be as specified on
46、 drawings 68A73H6 and 62A119D1. shall be as specified in drawings 68A73H12 and 68A73D19. Bladder and baffles 3.5.3 Belt portion. The belt portion of the life preserver shall be provided with ID“ rings ,for attaching the pouches. shall be in accordance with drawing 67A73D3. Harness hardware details 3
47、.5.4 Dye marker retaining pouch. The pouch assembly for retaining the dye marker shall be fabricated as specified in 68A73D2. 3.5.5 Flare retaining pouch. The pouch assembly for retaining the flare shall be fabricated as specified in 68A73D3. 3.5.6 Warning tag. A red warning tag conforming to UU-T-8
48、1, Type B, not smaller than Size 4, and strung with twine, shall be securely tied to the left belt-connecting assembly of the LPU-23B/P 1 ife preserver. contain the following information. The tag shall WARNING This life preserver shall not be used until subjected to the calendar inspection require-
49、ments of NAVAIR 13-1-6.1, Aviation-Crew Systems Manual. 3.5.7 Patches attaching items and protective covers. Patches, attaching items and protective covers shall be in accordance with drawings 68A73D8, 975AS118 and 975AS119, respectively. 3.5.8 Beaded Handle Inflation Assembly. Beaded handle inflation assemblies conforimg to MIL-H-85478 and Dwg 975AS121 shall be provided for each compartment of the inflation assembly. 3.6 Dimensions. The dimensions of the life preserver, components
