1、-c - 9999906 0233288 2 -1s-5Zj -. MIL-L-55b7F 42 a IILIT MIL-L- 5 56 7F 7 January 1983 SUPERSEDING 27 February 1974 17 December 1963 MIL-L-O05567E(AS) MIL-L-5 56 7D RY SPECIFICATION LIFE RAFTS, INFLATABLE - 4 AND 7 MAll - FOR AIRCRAFT USE This specification is approved for use by all Departments and
2、 Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for one type of a four-man inflatable life raft and two types of a seven-man inflatable life rafts. 1.2 Classification. The life rafts shall be of the following types, as specified (see 6.2.lb). LR
3、U-12/A Four-man life raft LRU- i /P Seven-man life raft LRU-l3/A Seven-man life raft 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. Unless otherwise specified, the following specifications, standards, and handbooks of the issue listed in that issue
4、of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation form a part of this specification to the extent specified herein. SPECIFICATIONS FEDERAL L-S-O0626 Sponge, Synthetic FF-0-605 Opener, Can, Hand (Disposable, Combination Opener and Punch) 1 Benef
5、icial coments (recommendations, additions, deletions) and any -pertinent data which.may be of use in improving this document should be addressed to: Engineering Specifications and Standards Department (Code 93), Naval Air Engineering Center, Lakehurst, NJ 08733, by using the self-addressed Standardi
6、zation D0cumen.t Improvenent Proposal (DD Forrn 1426) appearing at the end of this document or by letter. . FSC 4220 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-L-5567F 42 a 7777706 0233287 4 a . MIL-L-556 7F i* , , *: - . . .- SPECIFiCATION
7、S (Continued) -. FEPERAL (Cont + Mark 3 c : c Cloth, aid Tape, Cated Cloth, MIL-CL23670 - ., . Polyisoprene, Natural or Synthetic, Rubber on . Nylon - I. r. . . .: MIL-L-23614 Light, Marker, Distress, Aircrew, SDU-30 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
8、e from IHS-,-,-MIL-L-55b7F LI2 9799706 0233290 O MIL-L-5567F SPECIFICATIONS (Continued) MILITARY (Continued) MIL-B-36964 Blanket, Comba , Casualty, Lightweight, Water- proof, Aluminized Plastic MIL-L-38217 Light, Marker, Distress, SDU-5/E STANDARDS FEDERAL FED-STD-191 Textile Test Methods FED-STD-59
9、5 Colors FED-STD-601 Rubber, Sampling and Testing FED-STD-75 1 Stitches, Seams and Stitching MILITARY MIL-STD-105 Sampling Procedures and Tables for Inspection by Attribut es . MIL- STD- 12 9 Marking for Shipment and Storage MIL-STD-130 Identification Marking of U. S. Military Property MIL-STD-794 P
10、arts and Equipment, Procedures for Packaging and Packing of MS22054 Valve, Life Raft, Flush Type, Topping-Off 2.1.2 Other Government documents, drawings, and publications. The following other Government documents form a part of this specification to the exten; specified herein. CODE OF FEDERAL REGUL
11、ATIONS 49 CFR 100-199 Regulations for the Transportation of Explosives and Other Dangerous Articles (Application for copies should be addressed to the Superintendent of Documents, Government Printing Office, Washington, DC 20402.) DRAWINGS NAVAL AIR DEVELOPMENT CENTER CL230DL Life Raft and Equipment
12、 Assemblies - Multiplace Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-62A82H1 LRU-l2/A Inflatable Life Raft Assembly 62A82H2 LRU-l3/A and LRU-1/P Inflatable Life Raft Assembly, 7 Man c 62A82H3 Details, LRU-l2/A and LRU-l3/A Life Rafts 6 2A8 2H5 Ca
13、rrying Case Assembly, LRU-l2/A Life Raft, 4 Man 62A82H6 Carrying Case Assembly, LRU-1/P Life Raft, 7 Man 62A82D7 Accessory Container Assembly, LRU-l2/A and LRU-lS/A Life Rafts 62A82D 12 Folding Procedure, LRU-l2/A Life Raft, 4 Man 6 2A82D 13 Folding Procedure, LRU-l3/A and LRU-1/P Life Raft, 7 Man 6
14、3Al20H 1 AIR FORCE 55C3689 Inflation Equipment, Carbon Dioxide, for Multiplace Life Rafts Cylinder and Valve Assembly, Carbon Dioxide, Multiplace Life Raft 62D4339 Cover-Valve, Carbon Dioxide, LRU-l/P Life Raft, Assembly of PUBLICATIONS NAVAL AIR SYSTEMS COMMAND NAVAIR 13-1-6.1 Aviation Crew Systems
15、 Manual Inflatable Survival Equipment NAVAIR 00-25-513 Code Card (Copies of specifications, standards, handbooks, drawings, and publications required by- manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as.directed by the contracting
16、 officer.) b 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. the documents which are indicated as DoD adopted shall be the issue listed in the current DoDISS and the supplement thereto, if applicable. The issues of 4 Y - Provided by I
17、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-5567F 42 7777906 0231272 4 W MIL-L-5567F a f O I a NATIONAL MOTOR FREIGHT TRAFFIC ASSOCIATION, INC., AGENT National Motor Freight Classification (Application for copies should be addressed to the National Moto
18、r Freight Traffic, Tariff Department, 1616 P Street, N.W., Washington, DC UNIFORM CLASSIFICATION COMMITTEE, AGENT 20036.) Uniform Freight Classification Rules (Application for copies should be addressed to the Uniform Classification Committee, Room 1106, 222 South Riverside Plaza, Chicago, IL 60606.
19、) (Industry association specifications and standards are generally available for reference from libraries. groups and using Federal agencies.) They are also distributed among technical 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited
20、 herein, the text of this specification shall take precedence. 3. REQUIREMENTS 3.1 Qualification. The life rafts furnished under this specification shall be a product which has been inspected and has passed the qualification inspections specified herein, and has been listed on or approved for listin
21、g on the applicable Qualified Products List (see 4.3 and 6.3). specification will qualify a supplier for the three types specified herein. Qualification of any one type of the life rafts in this 3.2 First article. When specified, samples shall be subjected to first article inspection (see 4.4 and 6.
22、4). 3.3 Materials and components. Materials and components shall conform to applicable specifications, standards and drawings as listed or required-herein (see 6.2. li). Materials and components which are not covered by applicable specifications, standards or drawings, or are not specifically descri
23、bed herein shall be of the best quality, of the lightest practicable weight, and entirely suitable for the purpose intended. Unless otherwise specified, the materials and components, except for the metallic parts (excluding the carbon dioxide cylinder), used in the construction of the life raft shal
24、l have been manufactured not more than 18 months prior to the date of delivery of the life raft (see 6.2.li(2). 3.4 Design. The LRU-l2/A, LRU-1/P and LRU-l3/A life rafts shall consist of an encircling buoyant tube with a floor attached, an inflatable seat manually inflated through the topping-off va
25、lve, an outer encircling life line, a sea anchor, three boarding handles, three righting handles on the underside of the floor, two topping-off valves in 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-55b7F 42 777770b 0233273 - b -, - MIL-L
26、-5 5 6 7F the raft inflatable tube, a carbon dioxide inflation system (not applicable to LRU-1/P, unless specified in the acquisition document (see 6.2. lm) and a carrying case, supply pocket and an accessory container. The size, shape and arrangement of the life rafts and the components shall confo
27、rm to Drawings CL230D1, 62A82H1 and 62A82H2, as applicable. 3.5 Construction. 3.5.1 Cut edges. All the cut edges of the uncoated nylon fibrous materials, except for the base cloths which are to be coated, shall be seared prior to the fabrication of the life raft to prevent fraying. No sharp edges sh
28、all be formed. 3.5.2 Use of the adhesive, In all the cementing operations, 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) and any other surface contaminant is removed. The su
29、rface shall be clean prior to cementing. to insure that the coating and the base undercloth are not damaged and the adhesion between both is not impaired in any way by prolonged exposure to the solvent. application of the adhesive and shall leave no residue. shall be rolled out and all trapped air,
30、channels, and wrinkles removed, The adhesive shall be controlled to insure that old adhesive or adhesive which has partly or completely polymerizedis not used. the adhesive shall be used at least every eight hours during the course of manufacture. adhesive before being refilled. Care should be exerc
31、ised The solvent used shall evaporate completely prior to the Cemented areas A fresh batch of Contaherc for the adhesive shall be free from congealed 3.5.3 Cementing of the seams, seam tapes, patches and attachments. attaching of the seam tapes, patches, and attachments shall be undertaken utilizing
32、 the technique and precautions outlined in 3.5.2 so that, prior to the inspection of the assembled life raft, the adhesive shall have developed its optimum bonding properties and the adherence of all such seams, sealed areas, seam tapes, patches and attachments shall comply with the requirements of
33、this specification. patches, sealed areas, and the attachments shall be secured by the adhesive specified in the applicable drawings. The seams shall be covered on the inner and outer sides with seam tape as specified in the applicable drawings. All the seam tapes shall be applied to seams without t
34、ension and shall be applied so that a minimum of 3/8 inch is on either side of the seam edge which it covers. All the patches and attachments-shall be cemented to the life raft without tension. The adhesive shall be applied in a straight line parallel to the edges of the seam tapes, seams, patches a
35、nd attachments and shall extend from just . being visible to a maximum of 1 inch beyond the edges of the seam tape, seam, patch and attachment. The seam tapes, which seal circumferential seams, or where one end of the seam tape comes in contact with the other end of the same seam tape or another sea
36、m tape, shall overlap on itself, at. the ends, 3/4, plus 1/2, minus O inch. The overlap for the cemented seams shall be in accordance with the applicable drawings. The construction of the seams and sealing areas and the All the seams, seam tapes, The adhesive, , a 1 a Provided by IHSNot for ResaleNo
37、 reproduction or networking permitted without license from IHS-,-,-MIL-L-55b7F 42 W 777770b 0231274 W MIL-L-5567F when dry or cured, shall present a neat and uniform appearance. adhesive shall not be allowed to remain in clots not permitted to extend in such a manner as to result in localized stiffn
38、ess. The adhesive, upon or during drying shall not cause the cloth, seam tapes and attachments to shrink or pucker at any point on the life raft. free from congealed masses of the adhesive and spots or stains resulting from excessive adhesive. The The lift raft shall be 3.5.4 Seams and stitching. No
39、 stitching shall be used in any of the life raft seams, through the cloth of any air retaining chamber, or through the life raft floor. Sewing may only be used in the construction of the accessory parts but not in their final attachment to the life raft. accomplished as specified in the application
40、specification and drawing. All the sewing, except for the bartacks (see 3.5.4.2), shall be accom- plzshed with stitch type 301, conforming to FED-STD-751, and shall contain 6 to 10 stitches per inch. Each row of stitching shall be straight and parallel to the seam edge. The ends of the stitching sha
41、ll be backstitched, by overlapping on itself, a minimum of 1/2 inch. breaks, skips and run-Offs shall be overstitched not less than one inch. The thread tension shall be maintained so that there shall not be any loose or tight stitching and the lock shall be embedded in the materials sewn together,
42、portion of the accessory parts shall be caught in an unrelated operation or seam. All the thread ends shall be trimmed to a length of 1/4 inch maximum. The seam edges shall be properly forced out and shall not contain any folds. All the machine stitching in the accessory parts shall be Thread No sea
43、m shall be twisted, puckered or pleated and no 3.5.4.1 Cross over seams. A three-inch disc of the laminated cloth conforming to MIL-C-23070, variety C, shall be centered and securely cemented over each cross over seam on the inner side of the buoyancy chamber, as in Drawings 62A82H1 or 62A82H2, as a
44、pplicable. The disc shall be cemented and shall have the same resulting properties as described in 3.5.3. 3.5.4.2 Bartacking. The number of stitches per bartack shall be based proportionally on a 7/8-inch long bartack containing a minimum of 49 stitches. gpecified in the applicable specifications or
45、 drawings. The length and location of each bartack shall be as 3.5.5 Construction details. The construction details for each four and seven man inflatable life raft shall conform to the applicable specifications and drawings. 3.5.5.1 Inflatable tube. The cloth sections used in the raft flotation tub
46、e shall be incorporated in such a manner that the warp threads of the straight cloth run in a circumferential direction around the tube and the warp threads of the bias cloth run in the opposite direction in the adjoining sections. flotation tube without tension and with sufficient slack to prevent
47、distortion of the tube, when the raft is inflated. The floor shall be attached in such a manner to extend past the center line of the inflatable tube as specified in Drawings 62A82H1 and 62A82H2, as applicable. The floor shall be attached to the Provided by IHSNot for ResaleNo reproduction or networ
48、king permitted without license from IHS-,-,-MIL-L-55b7F LI2 7777906 0233275 T MIL-L-5567F 3.5.5.2 Bulkheads. Two internal vertical bulkheads shall be installed on each life raft so as to divide the flotation tube into two separate compartments, The bulkheads shall be constructed, located and attache
49、d to the inside of the tubes as specified in the applicable drawings. 3.5.5.3 Inflatable seat. Each life raft shall have an inflatable seat fabricated from the laminated cloth conforming to MIL-C- 23070, variety C. shall be tailored to fit the curvature of the inflatable tube. The inflatable seat shall be an independent air chamber, prior to the instal- lation onto the life raft, and shall be capable of
