1、MIL-W-35805F bb W 797970b O329029 5 1. SCOPE MIL-W- 15805F(SHIPS) 10 December 1962 SU PE RSEDING 20 April 1961 MIL - W - 1 58 05E( SHIPS) MILITARY SPECIFICATION WIND DIRECTION AND WIND SPEED INDICATING EQUIPMENT, TYPE B 1.1 This specification covers synchro type B wind direction and wind speed indic
2、ating equipment for use on Naval Ships. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in ef- fect on date of invitation for bids or request for proposal, form a part of this specification to the ex- tent specified herein: SPECIFICATIONS FEDERAL FF-B-171 - Bearings, Ball, Annular;
3、 General Purpose. QQ-A-601 - Aluminum Alloy Sand Castings. MILITARY MIL-M- 14 MIL-D-963 MIL-1-983 MIL- sa33 5 MIL-M-15071 MIL-M-16034 MIL-E- 17555 MIL-S- 20708 - Molding Plastics and Molded Plastic Parts, Thermosetting. Hull and Mechanical Equip- ment for Naval Shipboard Use. - Interior Communicatio
4、n Equipment; Naval Ship- board; Basic Design Re- quirements For. - Synchros, 60 Cycle, 115 Volt. - Manuais, Equipment and Systems. - Meters, Electrical- Indicating Switchboard and Portable Types. - Electronic and Electrical Equipment and Associated Repair Parts: Prepara- tion for Delivery of. - Sync
5、hros, 60 and 400 Cycle, General Specifi- cation For. - Drawings, Electrical, STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. Parts (Selected Standards). MIL-STD-242 - Electronic Equipment DRAWINGS BUREAU OF SHIPS 3331238 - Wind Direction and Speed De- 33
6、31239 - Wind Direction and Speed Trans- 3331240 - Onboard Repair Parts, Wind tector. mitter. Direction and Speed Transmitter, Type B. 3331241 - Wind Direction and Speed in- dicator. 3331265 - Wind Speed Indicator (Cross Wind and Head Wind). 3331266 - Crosswind and Headwind Com- puter Assembly. 33312
7、69 - Dials (Wind Speed, Knots (Wind Direction). (Copies of specifications, standards, drawings, and publications required by suppliers in connec- tion with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publicbtions
8、 . - The following docu- ments form a part of this specification to the ex- tent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. OFFICIAL CLASSIFICATION COMMITTEE Uniform Freight Classification Rules (Application f
9、or copies should be addressed to the Official Classification Committee, 1 Park Ave. at 33rd St., New York 16, New York.) FSC 6660 Licensed by Information Handling ServicesMIL-W-15805F 66 D 7799906 0127030 I MIL- W- 15805H SHIPS) Nat ional Electrical Manufacturers Association Specificatims (Applicati
10、on for copies should be made to National Electrical Manufacturers Association, 155 East 44th St., New York 17, New York.) NATIONAL BUREAU OF STANDARDS Handbook H28 - Screw Thread Standards For Federal Services. (Application for copies should be addressed to Superintendent of Documents Government Pri
11、nting Office, Washington 25, D. C.) 3. REQUIREMENTS 3.1 Qualification. - The wind direction and wind speed indication equipment furnished under this spec- ification shall be a product which has been tested and passed qualification tests specified herein, and has been listed on or approved for listin
12、g OR the ap- plicable qualified products list. 3.2 Description.- The wind direction and wind speed indicating equipment shall be designed to give continuous and instantaneous visual indications of wind direction in degrees relative to the ships bow and relative wind speed in knots. The equipment sha
13、ll consist of the following: (a) Wind direction and speed detector. (b) Wind direction and speed transmitter. (c) Wind direction and speed indicator or (d) Crosswind and headwind computer. (e) Crosswind and headwind indicator. speed recorder (when specified (see 6.1) . ) 3.3 General features. - 3.3.
14、1 The wind direction and wind speed indicat- ing equipment shall be in accordance with the follow- ing paragraphs of MIL-1-983, in addition to the re- quirements specified herein. Whenever a requirement of MIL-1-983 conflicts with a require- ment of this specification, the requirement of this specif
15、ication shall govern: General requirements Definitions Materials, general Substitution of (equal or superior) materials Fungus- inert materials Unacceptable materials Acceptable materials Flammable materials Arc-resistant materials Toxic materials Wood 2 Metals Aluminum Magnesium Iron or steel Nonfe
16、rrous material (except aluminum) Zinc Springs (material) Other Metals Plastics Ceramics Impregnating, embedding and encapsulating Glass Lubricants and lubrication Painting Protection against corrosion Bolts, machine screws, studs and nuts Parts - mechanical Gaskets Dials and pointers Dial sizes Lock
17、ing devices Washers Ball bearings Parts - electrical - general Use of nonstandard parts Requirements for semiconductor devices Electron tube or capacitor sockets Capacitors Variable resistors Transformers Relays Synchros(see3.4.1, 3.4.2, 3.4.3, 3.4.4.6, Synchro capacitors Synchro electrical zero and
18、 equipment mechanical zero Servo motors Electrical tapes Batteries Dial illumination lamps Switches indicator lights and lampholders Fuses Fuseholders and fuse clips Metallic rectifiers Printed wiring and circuits Enclosures - general Enclosure - accessibility Enclosure - degree of Enclosure - mount
19、ing Stiffening grooves Minimum sheet metal thicknesses (watertight enclosures) Through bolting Cable entrance Cable entrance plates Ventilation Size (for submarines and surface ships) compounds and 3.4.5) Licensed by Information Handling ServicesHIL-W-L5805F 66 7797906 OL2703L 3 Threaded devices Rou
20、nded corners and edges internal subassembly protection Drilled and tapped holes Welding Temperature and humidity Extreme temperature for exposed location Accelerated life Sait spray Shock, vibration and inclination Features-electrical Primary power supply circuits Power supply tolerances Personnel p
21、rotection Shielding and radio frequency noise reductior. Ground potential and grounding Soldering Electrical parts mounting Internal subassembly connection (Test cable Terminal boards, connectors and terminals Synchro connections and markings Wiring Color coding Dial illumination Electrical insulati
22、on Dielectric strength and insulation resistance Airborne noise (grade C) Structureborne noise Drawings - general Drawings - preliminary Drawings - working Schematic diagrams Wiring diagram Drawing list Assembly drawings Drawings - manufacturing Bill of materials Interchangeability and standardizati
23、on Mznuals (see 3.3 .l. 2) Repair parts Repair parts (electronic) Designation and marking (serial numbers re- quired) Reports Item Mmes and nomenclature Workmanship and general examination. required) clearances 3.3.1.1 Electron tubes. - Electron tubes shall be selected from the preferred types liste
24、d in MIL-STD- 242, 3.3.1.2 Manuals. - Manuals shall be in accord- ance with type I of MIL-M-15071. Deviations from previously approved existing manuals, except for the approval procurement and record page, shall not -I MIL- W- 15805 F( SHIPS) be made without specific authorization by the Bureau of S
25、hips. 3.3.2 Accuracy and response. - 3.3.2.1 The equipment shall be designed so that the error of the wind speed indicator readings shall not exceed the following values: (a) 3 to 45 knots plus or minus i-i/2 knots. (b) 45 to 60 knots plus or minus 2 knots. (c) 60 to 80 knots plus or minus 2-1/2 kno
26、ts. (d) 80 to 100 knots plus or minus 3 knots. (e) Maximum starting wind speed - 3 knots. (f ) Maximum stopping wind speed - 2 knots. 3.3.2.2 The time response of the wind speed transmitter shall be within the limits shown on figure 1. 3.3.2.3 The equipment shall be designed so that the error of the
27、 wind direction indicator readings shall not exceed the following values: (a) 1 to 3 knots minus 5 degrees. (b) 3 to 8 knots minus 4 degrees. (c) 8 to 100 knots plus or minus 2 degrees. 3.3.2.4 The response of the wind direction indi- cation shall be, for any change in wind direction, at the rate of
28、 6-1/2 degrees f 1-1/2 degree per second. 3.3.3 Continuous operation. - 3.3.3.1 All wind speed components shall be capable of continuous operation at full scale read- ing- 3. S. 3.2 All wind direction components shall be capable of continuous rotation at a speed of 5 revolu- tions per minute (r.p.m.
29、). 3.4 Detail requirements. - 3.4.1 Wind direction and speed detector. - The detector shali be manufactured in accordance with Drawing 3331238. The detector shall provide a means for generating and transmitting electrical signals, indicative of wind direction and wind speed, to the associated transm
30、itter. The detector shall consist of a streamlined vane and a three-blade im- peller mounted on a vane support (see figure 2). Any movement of the vane and impeller blades shall be transmitted mechanically to size 1 HG synchro generator in accordance with MIL-S-2335, housed in the vane or vane suppo
31、rt. The design shall be such that 100 knots of wind speed shall equal 190 r. p.m. of the speed synchro generator. The wind vane and vane support shall be of splashproof 3 Licensed by Information Handling ServicesMIL-W-LS8OSF.bb 777970b 0327032 S W MIL-W- 15805F(SHIPS) construction fabricated of nick
32、el-copper alloy. The exposed nickel-copper alloy shall not be painted, but shall be finished by a sandblast usingsilica powder- 325 mesh with an air line pressure of approximately 80 pounds per square inch (p. s. i. ) and a nozzle size of 1/2- to 3/4-inch diameter. The impeller blades shall be of mo
33、lded plastic of type CFG of MIL-M-14. The impeller shall contain a nickel-copper alloy nose cap with captive screw. A connector assembly arrangement containing a Pyle National connector, types AP-810 and AR-810, or equal shall be provided to permit removal of the detector mechanism without removing
34、the base from the mounting pintel or dis- turbing the ships wiring cable. A raincap shall be provided to protect the connector when the detector mechanism is r -?moved. The connector housing shall contain a 3/4-inch National Pipe thread, class 2 in accordance with Handbook H-28, pipe-plug for option
35、al cable connector. The design of the detector shall be such as to permit easy disassembling for oiling, cleaning, inspection, or replacement. 3.4.1.1 Mounting.- The detector shall be de- signed for mounting on the end of a l-inch diameter vertical pintel. The mounting arrangement shall provide a cl
36、amping fit and one 5/16-inch through bolt (see figure 2). 3,4.1.2 Balance. - The wind vane shall be stati- cally balanced to within 5 ounce-inches of true static balance. The impeller shall be statically balanced to within 10 gram-inches. mounted in the normal manner, the rotor shaft shall start to
37、turn at a torque of O. 056 inch-ounce . 3.4.1.4 Direction vane torque. - With the detec- tor mounted in the normal manner with its support horizontal, the vane shall start to rotate at a torque of 4. O inch-ounces. 3.4.1.3 Rotor starting torque. - With the detector 3.4.1.5 Size. - The complete detec
38、tor assembly shall weigh not more than 21 pounds, and shall not exceed the dimensions shown on figure 2. be subjected to the shock requirements as outlined in N1uI-1-983. 3.4.1.6 Shock. - The detector assembly will not 3.4.1.7 Bearings. - Ail bearings, including those used in the synchros, shall be
39、“sealed-for-life“ type, FF-B- 171, annular ball bearings. 3.4.1.8 Electrical contact , alloy. - The com- position of the stationary electrical contacts shall be a fine silver graphite alloy, 97 percent silver, 3 percent graphite. The material of the rotating contact shall be a silver alloy, 90 perce
40、nt silver, 10 percent copper. Contact pressure shall be 20 f 2 grams when tested with a spring scale pull. Mercury shall not be used in the fabrication of electrical contact parts, terminals, or terminal lugs. 3.4.2 Wind direction and speed transmitter. - The wind transmitter shall be manufactured i
41、n ac- cordance with Drawing 3331239. The wind direc- tion and speed transmitter shall contain, in a dripproof enclosure designed for bulkhead mounting, the mechanisms necessary to convert the input from the wind direction and speed detector to relative wind direction in degrees and relative wind spe
42、ed in knots, and to transmit this intelligence to wind di- rection and speed indications. The transmitter shall be designed so that it shall be possible to remove and repair either the wind direction or wind speed assembly of the mechanism without disturbing the operation of the other assembly. The
43、speed unit shall be a roller disc type integrator which measures the rotary motion of a receiving type 1F synchro, in accordance with MIL-S-2335, and displaces a transmitting type 5G synchro, in accordance with MIL-S-2335, at a rate (see figure 1) angularly pro- portional to rotor speed of the detec
44、tor, that is, wind speed. The discs shall be powered by a synchronous motor, Holtzer-Cabot model RBC 2505, or equal, which shall receive its power from the ships service 120-v01t, 60-cyc1ey a.c. supply. A low-limit cut-out switch shall be provided for breaking the circuit to the constant speed synch
45、ro- nous motor when the roller is at the center of the disc, less than 1/2-knot speed. The direction unit shall contain a static type amplifier employing either magnetic amplifier or solid state techniques which receives angular displacements of the vane of the detector. These angular displacements
46、shall be retransmitted to the indicator by a type 5G synchro, in accordance with MIL-S-2335, at a reduced rate of 6-1/2 f 1.5 degrees per second. As re- transmitted angular displacements are approximately constant and are not at the same rate as the angular displacements of the vane, damped indicati
47、ons are provided. Means shall be incorporated in the wind direction assembly for adjusting the electrical posi- tion of the aloft detector with respect to the fore and aft axis of the ship. The units shall be bolted in the case, and terminal boards shall be provided in the case for incoming wires. T
48、wo holes fitted with 1- inch National pipe thread class 2 in accordance with Handbook H-28 pipe plugs shali be provided for at- taching stuffing tube fittings. Electrical connections shall be made to each unit by plug-jack type term- inals, Winchester types Al8P and A18S, or equal. Power supply tole
49、rances as specified in MIL-1-983 shall apply. in order to provide a means for ad- justing the transmitter, a method or methods shaI1 Licensed by Information Handling ServicesMIL-W-1505F bb 999990b 0129033 7 be incorporated in the wind direction and wind speed mechanisms to indicate accurately the magnitude of the transmitted wind direction and wind speed signals. 3.4.2.1 Sensitivity. - The wind direction assem- bly shall be sufficiently sensitive so that when the wind vane is displaced 8 degrees from a 5-knot wind, it shall, upon release, meet the accuracy require- ments of 3.3.2.3. 3.4.
