1、MIL-DTL-52543E 21 June 2010 SUPERSEDING MIL-L-52543D 29 March 1989 DETAIL SPECIFICATION LIGHT, MARKER, GROUND-OBSTRUCTION This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 m. This specification covers a self-contained, battery-operated,
2、 steady or flashing, ground obstruction marker light. 1.2 Classification. The marker lights are of the following battery types, color filter dome sizes, and carrying bag options, as specified (see 6.2). 1.2.1 Batteries. The types of battery are as follows: Type L - One lantern battery Type C - Four
3、C-cell batteries 1.2.2 Color filter domes. The color filter dome sizes are as follows: Size 1 - Small color filter domes in accordance with figure 3 Size 2 - Large color filter domes in accordance with figure 4 1.2.3 Caminn bag options. The options of a carrying bag are as follows: Class Y - Carryin
4、g bag included Class N - No carrying bag included Comments, suggestions, or questions on this document should be addressed to Defense Supply Center Richmond, ATTN: DSCR-VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297- 5616, or e-mailed to STDZNMGT,dla.mil. Since contact information can change,
5、 you may want to verify the currency of this address information using the ASSIST database at https:/assist.daps.dla.mili. AMSC N/A FSC 6230 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1.3 Part or identifying, number (PIN). The PIN to be used for
6、 a marker light acquired to this specification is created as follows: T5 Class: Y - Carrying bag included N - No canying bag included Size: 1 - Small color filter domes in accordance with figure 3 2 - Large color filter domes in accordance with figure 4 I Type: L - One lantern battery C - Four C-cel
7、l batteries Specification number Denotes military specification 2. APPLICABLE DOCUMENTS 2.1 M. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additi
8、onal information or as examples. While every effort has beenmade to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of the documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government docum
9、ents. 3.2.1 Spccilicaions and standards. The Iollowing spccilicalions and standards form a p:rt oltliis docilnlci I,? lie extcnt specified hercin. Unless othcn.isc specified. thc issics of ihese documents are those cited in the solicitation or contract. FEDERAL STANDARDS FED-STD-595113538 - Yellow,
10、Gloss FED-STD-595123538 - Yellow, Semigloss FED-STD-595133538 - Yellow, Flat or Lusterless COMMERCIAL. ITEM DESCRIPTIONS A-A-52506 - Clamps, Hose A-A-59708 - Cloth, Cotton, Aftertreated Water- Repellant, Water-Repellant, and Mildew Resistant, Mildew Resistant Provided by IHSNot for ResaleNo reproduc
11、tion or networking permitted without license from IHS-,-,-DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-P-501 - Pin, Tent, Metal MIL-W-5625 - Webbing, Textile, Nylon, Tubular MIL-DTL-7989 - Covers, Light-Transmitting, for Aeronautical Lights, General Specification for MIL-C-10799 - Cloth, Coated, Cotton,
12、 Vinyl Coated, Fire and Mildew Resistant MS27977 - Fasteners, Snap, Style 1 (Large Curtain Type) MIL-DTL-32072 - Thread, Polyester MIL-C-43375 - Cloth, Duck, Nylon, 12.5 Ounce DEPARTMENT OF DEFENSE STANDARDS MIL-STD-130 - Identification Marking of U.S. Military Property MIL-STD-810 - Environmental E
13、ngineering Considerations and Laboratory Tests MIL-STD-889 - Dissimilar Metals (Copies of these documents are available online at httus:l/assist.davs.dla.mil/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 191 11-5094.) 2.2.2 Other government docum
14、ents. The following other government document forms a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation or contract. SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT (SCAQMD) Rule 442 - Usage of Solvents (Copies of this docume
15、nt are available online at http:/iwww.arh.ca.gov/ or from Sacramento Metro AQICID, 777 12th Sh.eet, Third Floor, Sacramento, CA 95814-1908.) 2.3 Non-government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of
16、 these documents are those cited in the solicitation or contract. AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) ANSI C18.IM, Part 1 - American National Standard for Portable Primary Cells and Batteries with Aqueous Electrolyte - General and Specifications Provided by IHSNot for ResaleNo reproduction
17、or networking permitted without license from IHS-,-,-ANSI - Continued ANSI C18.1M, Part2 - American National Standard for Portable Primary Cells and Batteries with Aqueous Electrolyte - Safety Standard (Copies of these documents are available online at httv:/www.ansi.org/ or from American National S
18、tandards Institute, 25 West 43rd Street, 4th FI., New York, NY 10036.) AMERICAN SOCIETY FOR QUALITY (ASQ) ASQ 21.4 - Sampling Procedures and Tables for Inspection by Attributes (Copies of this document are available online at http:/www.asa.org/ or from American Society of Quality, 600 North Plankint
19、on Avenue, Milwaukee, WI 53203.) ASTM NTERNATIONAL ASTM B209 - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate ASTM D256 - Standard Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics ASTM D4673 - Standard Classification System for Acrylonitrile- Butad
20、iene-Styrene (ABS) Plastics and Alloys Molding and Extrusion Materials ASTM D6193 - Standard Practice for Stitches and Seams (Copies of these documents are available online at http:/w.astm.org/ or from ASTM Intemational, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.) SAE IN
21、TERNATIONAL SAE AS25050 - Colors, Aeronautical Lights and Lighting Equipment, General Requirements for (Copies of this document are available from http:/www.sae.org/ or from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001 .) 2.4 Order of precedence. Unless otherwise noted herein
22、 or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. Provided by IHSN
23、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.2. 3.2 Description. The marker light (hereinafter referred to as “light“) shall
24、consist of a light assembly, a ballast bag and four anchor pins (see 6.5). 3.3 Materials. Materials shall be as specified herein. Materials not specified shall be selected by the contractor, shall be of the lightest practicable weight suitable for the purpose intended, and shall be subject to all pr
25、ovisions of this specification. The material shall be free from all defects and imperfections that may affect the quality and reliability of the finished product. Lights fabricated of materials other than those specified herein, and any design changes required due to use of such materials, shall be
26、subject to approval of the contracting officer. 3.3.1 Materials deterioration orevention and control. The light shall be fabricated from the compatible materials, inherently corrosion resistant or treated to provide protection against the various forms of corrosion and deterioration that may be enco
27、untered in any of the applicable operating and storage environments to which the light may be exposed. Plastic inherently susceptible to deterioration in the ultraviolet light shall be treated (i.e., ultraviolet stabilized) for the effects of ultraviolet light exposure, except for plastics whose fun
28、ctions would be adversely affected by such treatment. When specified (see 6.2), a certification of ultraviolet treatment to plastic components shall be provided. 3.3.1.1 Dissimilar metals. Dissimilar metals shall not be used in intimate contract with each other unless protected against galvanic corr
29、osion. Dissimilar metals and methods of protection are defined and detailed in MIL-STD-889. 3.3.1.2 Identification of metals and finishes. The contractor shall identify the specific material, material finish or treatment for use with components and subcomponents, and shall make information available
30、 upon request to the contracting officer or designated representative. 3.3.2 Recvcled. recovered. or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the opera
31、tional and maintenance requirements, and promotes economically advantageous life cycle costs. Used, rebuilt or remanufactured components, pieces and parts shall not be incorporated in the light. 3.4 Construction. The light shall be constructed so that parts will not work loose, and replacement of th
32、e battery, dome, deflector, and lamp can be made by personnel without the use of special tools. 3.5 Ooeration. With the light switch (see 3.6.5) in the “ON“ position, the light shall emit a steady glow. With the switch in the “OFF“ position, the light shall be completely extinguished. With the switc
33、h in the “FLASH“ position, the light shall flash in accordance with the flashing frequency and on-time as specified in 3.6.6. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.5.1 Operational performance. When tested as specified in 4.4.2.2, the ligh
34、t shall operate as specified in 3.5 without damage (see 6.4.1). 3.5.2 m. When tested as specified in 4.4.2.3, the light shall withstand a 6-foot drop without damage. 3.5.3 Rain resistance. When tested as specified 4.4.2.4, the light shall operate in the “FLASH“ position as specified in 3.5, without
35、damage and without any noticeable variation in light output. There shall be no noticeable evidence of water penetration inside the canister or dome. 3.5.4 Low-temperature and high-temperature operation. When tested as specified in 4.4.2.5, the light shall operate as specified in 3.5 without damage b
36、etween 32 “F (0 “C) and 131 “F (55 “C), and the flasher cycle rate shall not change more than *10 percent between 32 “F (0 “C) and 131 F (55 “C). 3.5 Cntlurncc (opcrarion:il reliabilin,). Vhcn irstcd as specified in 1.4.1.6, the light shall operate in thc “FIASI I“ position :is speciticd in 3.5 .iih
37、out Janngc for:) pcriod of50 hours (except for change of lamp) at 90 OF (32.2 “C). 3.6 Light assemblv. The light assembly (see 6.5 and figure 2) shall consist of a cylindrical canister, deflector, clear dome, lamp, three-way switch, flasher, and such wiring and fasteners required to make a complete
38、operational assembly when operated with an ANSI C18.1M, Part 1 and Part 2 designated: 6-volt alkaline lantern battery 908A, or 908AC; 6-volt carbon-zinc lantern battery 908CD, or 908D; four 1.5-volt alkaline C-cell batteries 14A, or 14AC; or four 1.5-volt carbon-zinc C-cell batteries 14CD, or 14D. B
39、atteries shall not be furnished with the light. A battery holder of commercial grade plastic to accommodate four C-cells shall be furnished on designs requiring a 6-volt lantern battery. 3.6.1 Canister. The canister, including any canister cap, shall he made of high-impact plastic with a minimum Izo
40、d impact strength of 1.5 foot poundslinch of notch (0.25 inch (0.64 cm) bar) at 73.4 t3.6 OF (23 +2 “C), when tested in accordance with method A of ASTM D256. The canister shall contain the battery and electrical circuitry, and shall be compatible with the deflector and dome. A guard on the exterior
41、 of the canister shall be provided for the protection of the three-way switch. When color filter domes are furnished in accordance with figure 3 (see 3.6.3), there shall he a space in the canister to store these domes without interference to the operation of the light. 3.6.2 Deflector. The deflector
42、 shall be either: (1) plastic with nickel-chrome finish; (2) cold-rolled steel with nickel-chrome finish; or (3) aluminum conforming to ASTM B209, alloy 3003 with a polished anodic oxide finish. The deflector shall contain the light socket for the lamp (see 6.5 and figure 2). 3.6.3 Domes. The clear
43、dome shall conform to figure 4 and shall be made of non- diffusing clear plastic conforming to MIL-DTL-7989, class D. An opaque dome shall be furnished as an accessory and shall conform to figure 4 and be made of plastics conforming to Provided by IHSNot for ResaleNo reproduction or networking permi
44、tted without license from IHS-,-,-MIL-DTL-7989. Red, green, blue, and amber filter domes shall be furnished as accessories and shall conform to either figure 3 or figure 4. The chromaticity and transmittance of the color filter domes shall be as specified in SAE AS25050, type I. When color filter do
45、mes are furnished in accordance with figure 3, they shall be stored within the canister (see 3.6.1), and when stored, shall not interfere with the operation of the light. The color filter domes conforming to figure 3 shall be made to fit over the lamp and maintain their position over the lamp while
46、the light is inverted and shook (see 4.4.2.7). Also, when tested as specified in 4.4.2.5, the blue filter dome conforming to figure 3 shall not soften or deform when installed over the lamp and when the light is operated in the steady “ON“ mode for 6 hours at an ambient air temperature of 131 “F (55
47、 “C). 3.6.4 w. The lamp shall be a commercial-type lamp, manufacturers trade number 503. Two spare lamps shall be provided with each light (see 6.5 and figure 2). 3.6.5 Switch. An environmentally-sealed, externally-operated toggle switch shall be furnished. The switch shall provide “ON“, “OFF“, and
48、“FLASH“ positions. The positions shall be labeled “ON“, “OFF“, and “FLASH“ respectively. The label characters shall be 0.18 inches tall and of a color contrasting with the background. A neoprene or silicone rubber boot with a nickel-plated brass mounting-nut shall be provided to fit over the switch
49、and prevent moisture from entering the switch and canister. 3.6.6 Flasher. The flasher or flasher circuit shall provide a flashing frequency of 60 cycles 510 cycles per minute, and the on-time for the lamp shall be not less than 0.3-second duration for each flash. Cycle rate shall not change more than *I0 percent at ambient temperatures between 32 OF (0 “C) and 131 OF (55 “C). 3.6.7 Waterroofinz gas
