1、MIL-S-L955LB 62 W 9999906 0102hlt2 7 3 November i977 SUPERS DDING ML-S-19551A (SilIPS) 27 December 1962 (See 6.7) MILITARY SPECIFICATION SEARCHLIGIITS , INCANDESCENT LAIC2 AND MERCURY-XEWON VAPOR LAMP , SIGN. For Shipboard Use, General Specif $cations for. 4IL-G-21597 - Glasses, Portlight, Circular,
2、 Heat Treated. MIL-R-2728 - Reflector, Liqht , Parabolic, SeaCchLight. MIL-P-15024 - Plates, Tags and Bands for Identification of Equip- MIL-P-15024/5 - Plates, Identification. MIL-E-15090 - Enamel, Equipment, Light-Gray (Formula NO. 111). MIL-P-15137 - Provisioning Technical Documentation for Repai
3、r MILITARY ment. Parts for Electrical and Mechanical Equipment (Naval Shipboard Use). for Metals) . Repair Parts; Packaging and Packing of. MIL-P-15328 - Primer (Wash) , Pretreatment, Blue (Formula No. 117-B MIL-E-17555 - Electronic an2 Electrical Equipment, Accessories and MIL-L-18052 - Lamp, Mercu
4、ry Xenon Vapor, Searchlight. - - . Beneficial comments (recowmendations , additions , deletions). ah6 any_ pertinent a data which may be of use in improving this document shouli! be addressed to: Commander, Naval Ship Engineering Center, SEC 6124, Department of the Navy, Washington, DC 20362 by usin
5、g the self-addressed Standardization Document Improvement Proposa1 (DD FOIX 1426) appearing at the end of this docurrrentt or by letter, - -7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ML-S-19551B (Si) STANDARDS FEDERAL FED-STD-141 - Paint, Varn
6、ish, Lacquer, and Related Materials; Methods of Inspection, Sampling, and Testing. MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by MIL-STD-167-1 - Mechanical Vibrations of Shipboard Equipment Mc 15605 - Lamp, Incandescant, T-20, Mogul Bipost Clear Finish. MS 25015 - Lamp, Inc
7、andescant, T-20 Bulb, Mogul Bimst Base. NAVSIIIP 18-T-4199-L - Hood for 12-inch Signaling Searchlight. NAVSIIIP 815-1197106 - 12-Inch Mercury Xenon Signaling Searchlight. NAVSHIP 9500-$6600-8149 - 12-Inch Signaling Searchlight. NAVSIIIP 9500-S6600-8150 - 12-Inch Signaling Searchlight. NAVSHIP 95123-
8、S6600-691438 - 12-Inch Searchlight, Venetian Shutter Attributes. (Type I - Environmental and Type IX - Internally Excited). DRAWINGS Assembly. (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained
9、 from the procuring activity or as directed by the contracting officer.) the extent speciPfied herein, invitation for bids or request for proposal shall apply. 2.2 Other ublications. The following documents form a part of this specification to Unless otherwise indicated, the issue in effect on date
10、of NATIONAL BUREAU OF STANDARDS ilandbook 1128 - Screw Thread Standards for Federal Services. (Application for copies should be addressed to the Superintendent of Documents, Govern- ment: Printing Office, Washington, DC 20402.) DEPARTMENT OF TFW?CPORTATION Hazardous Materials Regulations, 49 CFR Par
11、ts 171-177. (Application for copies should be addressed to the Superintendent of Documents, Govern- (Technical society and technical association specifications and standards are generally ment Printing Office, Washington, DC 20402.) available for reference from libraries. They are aleo distributed a
12、mong technical groups and using Federal agencies.) 3. REQUIREMENTS 3.1 3.2 Material. Material shall be as specified herein and meet the specified performance 3.2.1 Nonma netic material. When specified (see 6.2.1) , nonmagnetic material shall be Sample for first article inspection, Prior to beginning
13、 production a sample shall be examined and tested as specified in 4.3 (see 6.5). requirements. substituted bc material wherever practicable. 2.0 or less after fabrication. When the contractor feels that this requirement is not feasible, he should give detailed reasons and request waiver of the requi
14、rement from the Naval Ship Engineering Center (NAVSEC) via the contracting officer (see 6.4). Reclaimed materials shall be used to the maximum extent possible. The magnetic permeability shall be 3.2.2 Dissimilar metals, Contact of dissimilar metals shall be avoided. An exception - is made in the cas
15、e where one of the metals is steel. 3.2.3 Protection against corrosion. 3.2.3.1 General re uirement. All part6 of the searchlight shall be of corrosion-re- sistant materimf ,teria1 protected against corrosion. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
16、IHS-,-,-MIL-S-17551B 62 W 777770b 0102644 O tIIL-S-19551B (SH) 3.2.3.1.1 Corrosion-resistant materials. Silver, corrosion-resistant steel, copper, brass, bronze, copper-nickel, and nickel-copper alloys are corrosion-resistant Katerials within the intent of 3.2.3.1. Corrosion-resistant materials are
17、required for bolts, nuts, studs, pins, cap screws, and similar fasteners, and for parts that move with respect to each other (have common bearing surfaces) in normal usage of the equipment. 3.2.3.1.2 Corrosion-resistant treatment. Electrodeposited zinc in accordance with type II, class 2 of 04-2-325
18、 shall be used to protect those materials which are not corrosion- resistant. 3.2.3.2 Paintin of searchlight equipment. Prior to painting, all external metal sur- faces shall be given :wo coats of zinc-chromate primer conforming to TT-P-645. The first priming coat shall be applied after machine work
19、 has been completed and after surfaces to be covered have been thoroughly cleane& and dried and given a corrosion-resistant treatment, if applicable. Priming coats shall be followed by two coats of paint conforming to the follow- ing requirements: (a) Painting of external surfaces shall conform 0 th
20、e cdor, gloss, flexibility, resistance to water immersion, and reflectance,o Fed. Etd. 595 color number J 26270 of TT-E-490. searchlight is operated at rated voltage for a peria of 2 hours, with the shutter closed. (i) Paint shall be dull black. (2) Gloss shall be not greater than 4 units when deerm
21、ined by method (3) (4) Under normal operating conditions, the paint shall not fume to such The paint shal not discolor nor become soft when the Painting of internal surfaces shall conform to the following requirements: (b) 6101 of FED-STD-141. 6121 of FED-STD-141. Reflectance shall be not greater th
22、an LO vhen determined by method an extent as to be harmful to personnel or cause an objectionable film to form on the interior of the searchlight. (5) Flexibility and resistance to water immersion shall conform to (a). 3.2.3.2.1 Alternate painting requirements. Alternate painting requirements shall
23、be in accordance with the following: (a) Primer in accordance with MIL-P-15328. (b) External surfaces in accordance with MIL-E-15090. 3.3 Design and construction. Searchlights shall be designed and constructed in conform- ance with Drawingc500-S6600-8149, 9500-S6600-8150, 815-1197106 and 18-T-4199-L
24、 as specified. Design and construction shall provide for continued satisfactory operation and will not re- quire special tools or excessively precise workmanship to perform routine maintenance. Material and construction shall be the lightest and most compact consistent with the strength required for
25、 safety and reliability. Special tools are defined as those tools not listed in the National Supply Catalog. Defense Contract Administration Service (DCAS).) (Copies of this Catalog may be consulted in the office of the 3.3.1 General design. The searchlight shall be designed for long service, withou
26、t frequent overhaul, under severe conditions of shock, gun blast, vibration, humidity, salt atmosphere, and the rolling and pitching of a ship. The searchlight shall be light tight when the lamp is burning (no light shall be visile at any time from any part of the search- light from a distance of 10
27、0 feet with the front door CoMpletely covered). struction of the searchlight and the signaling shutter shall be euch that messages transmitted with the searchlight at speeds up to 15 words (300 operating cycles of the shutter) per minute can be read by an experienced signalman. nished on the same or
28、der or bht to the same manufacturers drawings shall be strictly interchangeable without the necessity of further machining or handfitting of any kind. Design and con- 3.3.2 Interchangeabilit . Similar parts, including repair parts, for equipment fur- 3.3.3 Threaded parts. 3.3.3.1 Screw threads, Scre
29、w threads shall conform to the requirements of Elandbook H28. - - 3.3.3.2 Clamping devices. Clamping devices shall be secured in such a manner as Co prevent loss during operation and maintenance. 3 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
30、L-S-19551B (SH) 3.3.4 Component parts. Component parts of a drum with a rear door signaling shutter, glys,.yokel supply cable, hood with filters, of the searchlight: shall consist essentially lamp and accessories, reflector, front door and those parts specified in 3.3.4.1 through J.J.I.J 3.3.4.1 Dru
31、m. 3.3.4.1.1 Mountin . The drum shall be mounted on trunnions which shall seat on the There yoke. shall be a single clamp for locking the searchlight in any angle of elevation. installed. These brackets shall conform to figure 1. Mounting brackets shall be of cor- rosion-resistant steel. shall be mO
32、Uted, one on each side of the drum near the top for aiming the beam. piece shall be a globe ring with a 3/4-inch diameter opening. small ball or a pointed top. The two pieces shall be mounted as far from each other as practicable and parallel to the axis of the searchlight beam. 3.3.4.2 Rear &, The
33、rear door shall be hinged to provide access to the inside of the drum, and shall be clamped to the drum. The fit of the rear door to the drum shall be such that the location of the reflector with respect to the filament is positively fixed when the door is closed and clamped in position. The door sh
34、all include provision for easy mount- ing of the reflector. A handle, designed to permit aiming of the light by a man wearing haavy gloves, shall be attached to the rear door. The handle shall be conveniently placed for continuous training and elevating of the drum while signaling. This handle shall
35、 be sufficiently heat insulated from the drum to prevent its temperature exceeding 55OC during continuous signaling operation for 4 hours, assuming an ambient temperature of 25OC. Movement of the %um in the vertical plane shall be as specified in 3.5.11. 3.3.4.1.2 Mounting brackets. Two mounting bra
36、ckets for infrared viewer shall be 3.3.4.1.3 Sights. TWO sights, each of which shall consist of a front and rear piece, The front piece shall have a The rear 3.3.4.3 Signaling shutter. 3.3.4.3.1 General design, The signaling shutter shall be of the lattice vane (“venetian blind“) type md-be in accor
37、dance with Drawings 9500-S6600-8149, 9500-S660O-815Ol 815- 1197106, and 95123-S6600-691438. shall be reduced to a minimum, and such leakage, if present, shall not cause a reduction in signal efficiency. The signaling shutter assembly (with the front door glass removed) shall reduce the average maxim
38、um beam candlepower not more than 20 percent. 3.3.4.3.2 Shutter frame. The shutter frame which serves to hold the shutter vanes and front door glassmbethe fixed type, and shall be held rigidly to the drum by hexag- onal headed bolts. Bolts shall be spaced at 45 degrees from each other on a 13-1/4-in
39、ch bolt circle diameter. Two of the holes shall be located at the ends of the vertical diameter. The number, size, and location of these bolts shall be in accordance with Drawing 9500-S6600- The light leakage through the signal shutter when closed 8150 4 3.3.4.3.3 Interchangeabilit . Special care sh
40、all be exercised in following the drawings referred to in 3.3.4.3.1 with reg5rd to the features involving fit of the assembled shutter either on the front of the drums being supplied, or on other searchlights designed to accom- modato the standard shutter. Drawing 9500-S6600-8149 is modified to the
41、extent that the cut in the drum to accommodate the shutter boss is not required. shall be capable of withstanding 4,000,000 cycles of opening and closing without wear or damage to such an extent as to preclude continuation of satisfactory operation. shutter operating handles shall be provided, one o
42、n each side of the drun. shall be completely interchangeable. Adjustable stops shall be provided with both handles to avoid twisting the drive shaft in opening and closing the shutter. able) shall be provided for returning the shutter vanes to the fully closed position. One spring shall be placed on
43、 each side of the shutter and shall be so designed that the springs may be easily replaced. vartes, from fully closed to fully open, shall not exceed 90 degrees. A positive locking device shall be provided for locking the shutter in the open position. The lock shall be so designed that there shall b
44、e no possibility of interference with the shutter operation. Provision shall be made for easy muting of the front door glass, which shall be firmly held in place. can be maintained in service. 3.3.4.3.4 Construction. Design and construction of the shutter shall be such that it Two signal The two han
45、dles 3.3.4.3.5 Two counter springs (preferably interchange- The throw of the shutter operatinq handle for movement of the shutter Design of the glass holding frame shall be such that the securing pressure . 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
46、HS-,-,-MIL-S-L755LB 62 M 7797706 OL02696 LI MIL-S-19551B (SH) 3.3.4.4 Lamp and accessories (type I). 3.3.4.4.1 Lamp. A 30 volt or 115 volt, 1,000 watt mogul bipost lamp as specified in 1.S 25015-1 or MS 15605 shall be supplied with each searchlight. The lamp voltage to be supplied shall be as specif
47、ied (see 6.2.1). be provided with one floating clamp. Means shall be provided to ensure rapid drainage of water from all surfaces and the bipost pin receptacles. Maximum creepage distances between live parts of the socket shall be provided. 3.3.4.4.3 Lamp socket mountin drum shall be positiom that t
48、hz filament of the incandescent lanip shall be centered at the focal point of the reflector. In order to provide for slight inaccuracies in the re- flector position, the sockek mounting.holes shall be slotted to permit adjustment of focus at the time of assembly. The size of the slots shall be adequ
49、ate to provide for the range of adjustment required due to variations in lamp, reflector, and searchlight. 3.3.4.4.2 Lamp socket. The lamp socket shall accommodate the bipost lamp, and shall The socket and its mounting boss on the inside of the 3.3.4.5 Lamp and accessories (type II). 3.3.4.5.1 Lamp. The type II lamp to be supplied with the searchlight shall-be in 3.3.4.5.2 Starter assembl . The starter assembly shall be mo-nted on tho searchlight accordance with MIL-L-18052. in conformance with
