1、MIL-P- 15554B(SHIPS) =November 1961 _ SUPERSEDING MIL-P-15554A 30 Aukwst 1952 MILITARY SPECIFICATION PROPELLER REVOLUTION INDICATING EQUIPMENT, SYNCHRO (NAVAL SHIPBOARD USE) 1. COPE 1.1 Scope. - This specification covers instantaneous, continuously indicating synchro electrical propeller revolution
2、indicating equipment ccnsisting of transmitters, indicator-transmitters, and indicators for use in Naval shipboard interior communication system, circuit “K“. 1. 2 Cassiiication. - 1.2. 1 Transmitters. - The transniitters shall be of types designated in the following form, as specified (see 6. i). /
3、Type of Drive Speed ratio between propeller shaft and transmitter shaft The type designations shall be in accordance with the following symbols: Basic indicator: IC/ - Basic indicator for Naval interior communication equipment. Speed ratio between propeller shaft and transmitter shaft: 1-ltol 2-2to1
4、 3-3t01 Type of drive: (Method of driving the transmitter from the propeller shatt or propulsion equipment). A - Gear drive B - Direct coupling Operating speed range: 0-400 r. p. m. unless otherwise specilied. (see 6.1). 1.2.2 indicator-transmitters and indicators. - The indicator shall be of types
5、designated in the following form, as specified (see 6.1): 4 B R C 4 X I IC/ , /iai size 7- , /- Illumination ,/Speed range J Basic Design R nquirements For. Mechanical Equipment (Naval Shipboard Use). ment of Government Nomenclature. Delivery of. STANDARDS MILITARY MIL-STD- 167 - Mechanical Vibratio
6、ns of Shipboard Equipment. MIL-STD-202 - Test Methods for Electronic and Electrical Component Parts. MIL-STD-710 - Synchros, 60 and 400 Cycle. DRAWINGS BUREAU OF SHIPS 3128837 - indicator, Type IC/GPNC4-X. 3244956 - Indicator, Type IC/GPNC4-X, 3295478 - indicator, Type IC,/4PRN2-X, 4-X. 3295479 - In
7、dicator, Type IC/PNN%-X, 4-X. 3295480 - List of Onboard Repair Parts. 3301753 - Transmitter, Type IC/3A. 3301754 - Transmitter, Type IC/2B. 3301758 - Transmitter, Type IC/PA. 3315293 - Speed Signal Switch. 3328618 - Indicator, Type IC/GPNCB-X, 4-X. 3331227 - Transmitter, Drive Gears. 3331228 - Trans
8、mitter, Type IC/3B. 3331229 - indicator-Transmitter, Type IC/GPNCB-Z. 3331230 - Indicator-Transmitter, Type IC/GPNC4-2. 3331231 - Indicator-Transmitter, Type IC/BPNCI-ZM. 3331232 - Indicator, Type JC/6PNN2-X, 4-X. 3331233 - indicator, Type IC/4URN2-Y, 4-Y. 3331234 - Indicator, Type IC/IPNNB-X, 4-X.
9、9000-56595-73687 - Standard Dial Markings for interior Communications and Industry Systems. (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the
10、contract- ing officer.) 2.2 Other pub!icztions. - The following documents form d gart o: this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation lor bids shall apply. (Application for copies should be addressed to the Official Classifi
11、cation Committee, 1 Park Avenue at 33rd St. , New York 16, N. Y. ) NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION LT-1 - Industrial Laminated Thermosetting Products. (Application for copies should be addressed to the National Electrical Manufacturers Association, 155 East 44th Street, New York 17, N.
12、,Y. ) n J OFFICIAL CLASSIFICATION COMMITTEE Uniform Freight Classification Rules Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-P-1555YB b3 799970b 023b958 2 MIL -P - 15554B( SHIPS) AMERICAN SOCIETY FOR TESTING ?l.AERl.4i.S B26 - Aluminum-Base
13、Alloy Sand C:tii: (Application for copies should be addressed to the American Society for Testing Materials, 1916 Race Street, Philadelphia 3, Pa. AMERICAN STANDARDS ASSOCIATION B5.20 - Machine Pins B17f - Woodruff. Keys, Keyslois, and Cutters B18.1 - Small Solid Rivets B18.2 B18.3 - Socket Head Cap
14、. Screws and Socket Set Screws B18.6 B18.6.2 - Hexagon Head Cap Screws. Slotted Head Cap Screws. Square Head Set Screws and B18.6.4 - Slotted and Recessed Head Tapping Screws and Metallic Drive Screws B27.1 - Lock Washers B27.2 - Plain Washers - Square and Hexigon Bolts and Nuts - Slotted and Recess
15、ed Head Screws, Machine and Tapping Types Slotted Headless Set Screws (Application for copies should be addressed to the American Standards Association, 70 East 54th Street, New York 17, N. Y.) 3. REQUIREMENTS 3.1 Qualification. - The equipment furnished under this specification shall be a product w
16、hich has been tested and passed the qualification tests specified herein, and has been listed on or approved for listing on the applicable qualified products list. 3.2 General requirements. - Each ship equipment shall be designed to indicate the speed and count the revolutions of the propeller shaft
17、s, and to indicate their direction of rotation. A physically driven trans- mitter, one for each propeller shaft, shall transmit to its associated indicator-transmitter, which in turn shall indicate propeller speed, direction, and totalized revolution count. The indicator-transmitter, in turn, shall
18、transmit to one or more indicators, which shall merely repeat the desired data at other remote loca- tions, as required. 3.2.1 The equipment shall be sturdily constructed of a grade of material adequate for each specific application consistent with the requirements noted herein. 3.2.2 The design, la
19、yout, and assembly of the unit and their parts shall be such as to facilitate quantity production. Jigs shall be used to position parts during welding and assembly operation. 3.2.3 Mounting dimensions shall be in accordance with the drawings referenced herein. 3.3 General features. - The equipment s
20、hall be in accordance with tne following paragraphs of Specifica- tion MIL-1-983 in addition to the requirements specified herein: (Whenever a requirement of Specification MIL-1-983 conflicts with a requirement of this specification, the requirement of this specification shall govern. ) , General in
21、formation Definitions Materials, general Stressed or vital parts Substitution of (equal or superior) materiais Fungus-inert materials Unacceptable materials Acceptable materials Flammable materials Arc - resistant materials Toxic materials Aluminum Magnesium 4 Provided by IHSNot for ResaleNo reprodu
22、ction or networking permitted without license from IHS-,-,-MIL-P- 15554B(SHIPS) Iron or steel Brass Bronze Copper Dial sizes Locking devices Washers Ball bearings Parts -electrical-general Capacitors Relays Synchros (see 3.14.4.4.1, 3.14.5.4 and 3.15) Dial illumination lamps Switches Indicator light
23、s and lampholders Metallic rectifiers Enclosures-general Enclosure-accessibility Enclosure-degree of (see 3.14.4.1, 3.14.5.1 and 3.14.6.1) Enclosure- mounting Stiffening grooves Through bolting Stuffing tubes Threaded devices Rounded corners and edges Internal subassembly protection Drilled and tapp
24、ed holes Welding Temperature and humidie (special cold limit applies) Copper -beryllium alloy Copper-nickel alloy Nickelcopper alloy (monel) Copper-nickel-zinc alloy (nickel silver) Zinc Other metals Springs Plastics Ceramics Impregnating, filling, potting, embedding and encapsulating compounds Glas
25、s Lubricants and lubrication Dials and pointers Salt spray Primary power supply circuits Power supply tolerances Personnel protection Shielding and radic frequency noise reduction Soldering Electrical parts mounting Internal subassembly connection Terminal boards, connectors and terminals Synchro co
26、nnections and markings Wiring Color coding Dial illumination Electrical insulation Dielectric strength and insulation resistance clearances Airborne audible noise (see 3.13) Structureborne noise (vibration) for submarine equipment (see 3.13) Interchangeability and standardization 5 Provided by IHSNo
27、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-15554B b3 D 799970b 023b9b0 O 9 :1I.-P- 15554B(SHIPS) Technical manuals Designation and marking (serial numbers required) Design for production Reports Nomenclature .Norkmanship and general examination 3.4 Acceler
28、ated life. - The units shall satisfactorily withstand the accelerated life test (endurance) specified in 4.5.4. 3.5 Shock, vibration and inclination. - The units shall satisfactorily withstand without mechanical or electrical damage which would cause malfunctioning or inoperation method 207 shock in
29、 accordance with Standard MIL-STD-202, vibration tests (vital). type I in accordance with Standard MIL-STD- 167, or inclin- ation tests of 60 degrees from vertical in any direction, that is, forward, backward, left or right. 3.6 Corrosion-resisting steel hardware items. - External hardware items suc
30、h as nuts, screws, bolts and lockwashers shall be of nickel-copper alloy. 3.7 Sgraws, bolts, nuts, washers, pins and other hardware it=. - All screws, bolts: nuts, washers, pins and other hardware items shall be in accordance with Publications American Standards Association (ASA) B5.20, B17f, B18.1,
31、 B18.2, B18.3, Bl8.6! B18.6.2, Bis. 6.4, B27.1 and B27.2, as applicable. 3.8 Magnetic permeability of components. - Except for those applications where the function of the component requires the use of magnetic material, all components shall use non-magnetic type materials. 3.9 TZ. - No special tool
32、s shall be necessary for assembly, disassembly or maintenance of the equipment referenced herein. Special tools are defined as those tools not listed in the Navy Stock List of General Stores. (Copies of this stock list may be consulted ir. the office of the Government inspector.) 3.10 Transformers.
33、- Transformers shall be in accordance with grade 5, class S of Specification MIL- T-27: and shall have a life expectancy X. 3. 10. 1 Insulating electrical windings. - Electrical windings shall be thoroughly treated or impregnated by a method which will ensure the evacuation of all air and water from
34、, and the filling in of all interstices within such windings. The liquid insulation used shall have such characteristics and be so applied as to ensure thorough drying, solidification, or curing throughout the innermost recesses of the windings. 3.11 Electrical tapes. - Electrical tapes of the best
35、commercial grade of acetate film; glassfiber or polyethylene only shall be used. Fabric or textile pressure-sensitive (adhesive or friction) tape shall not be used. 3. I2 Painting. - Sheet metal and case enclosures shall be completely painted as specified in 3.12.1 through 3.12.4. 3. 12. 1 Cleaning.
36、 - After all machinery, welding and brazing operations are completed, the interior and exterior surface of all metal enclosures shall have all rust or other visible corrosion products removed, and shall be thoroughly cleaned of all grease. oil, and dirt by solvent wiping. vapor degreasing, or czusti
37、c washing and rinsing. 3.12.2 Undercoat and finish. - One coat of zinc chromate primer followed by two coats of high grade semi-gloss light gray equipment enamel shall be applied. applied in accordance with the best commercial practice. The anodizing. primer, and enamel coats shall be 3. 12.3 Protec
38、tion against corrosion. - All metal parts shall be of suitable corrosion-resisting materials or other materials treated in a satisfactory manner. 3.12.4 Corrosion-resisting treatments. - The corrosion-resisting treatments shall be in accordance with those specified herein. In each case the treatment
39、 shall be accomplished in accordance with the best commercial practices. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-P-Ii555rB b3 D 9997906 023b9bl 2 W MIL-P- 15554B( SHIPS) (;LI Zinc coating (hot dip galvanizing) for parts other than thre
40、aded fasteners, unless otherwise (ti) Electroplating of zinc for surfaces not to be painted and for externally threaded parts. icl Electroplating cadmium for surfaces not to be painted and for externally threaded parts. (ci) Electroplating of chromium for general application. (e) Anodic treatment of
41、 aluminum. (f ) Lubricant and lubrication. With the exception of the synchro bearings and main shaft bearings, all specified herein. other bearings in the equipment shall be lubricated with light oil such as Navy 2110. Gear teeth shall be lubricated with a 600 W oil or Navy type 5190 oil. 3. 13 Airb
42、orne and structureborne noise. - Airborne and structureborne noise of equipment being furnished for installation in surface ships shall meet the requirements of Specification MiL-1-983 and equipnients furnished for installation in submarines or for submarine stock support shall meet the grade B nois
43、e requirements of Specification ML-E-22843, as specified (see 6.1). 3. i4 Detail requirements. - 3.14. 1 Counters. - All revolution counters shall be of the odometer, nonreset, ball bearing, revolving drum type with six figure wheels. The numerals on the figure wheels shall be at least 1/4 inch high
44、 by 3 16 inch wide. The numerals shall be white on a dull black background. 3.14.2 Reverse direction indicators. - Reverse direction indicators shall consist of a lamp type (red) signal. which shall, when energized, indicate the reverse (astern) rotation of the propeller shafts. The signal shall be
45、continuous during reverse rotation of the propeller shaft and shall utilize a 6 to 8 volt lamp. Lamps and lamp holders shall be in accordance with Specification MIL-1-983. 3, 14.3 Accuracy. - When the equipment, consisting of a transmitter, indicator-transmitter. and three indicators connected in a
46、system, is operated on designed voltage and frequency at any ambient temperature over the range 40 to 130“F., the accuracy shall be as specified in 3.14.3.1 and 3.14.3.2. 3. 14.3. 1 Permissible error. - Maximum permissible error of r. p. m. indication in the indicator- transmitter and indicators sha
47、ll be as specified in (a) and (b). (a) Indicator - transmitter. - From 5 r. p. m. to 1/10 of full scale reading. error shall be within ii/2 of 1 Dercent of full scale reading. From 1/10 of full scale rsing to f“t1 scale reading, error chal1 be within i1/4 of 1 percent of full scale reading. (1) Sing
48、le pointer indicators. - Error shall not exceed a tolerance of f1/2 of 1 percent of full (b) Indicators. - scale reading. (2.) Multiple pointer indicators. - Error shall not exceed a tolerance of +3/4 of 1 percent of full scale reading. 3.14.3.2 Response time. - The accuracy requirements of 3.14.3.1
49、 shall be met within 5 seconds after the propeller shaft assumes constant speed. The indicator-transmitter shall also be capable of indicating from 5 r.p. m. to full scale within 1 minute. 3.14.4 Transmitter. - The transmitter shall provide a means for transmitting synchro signals indicative of propeller shaft speed to the associated indicator-transmitter. The transmitter shall contain in a single enclosure a synchro driven by a shaft which is geared or directly coupled as specified in 1,2.1 to
