NAVY MIL-I-21685 (3)-1979 INDICATOR COMPASS REPEATER ROTATING DIAL TYPE MW-2《MW-2型旋转拨号式罗盘中继器指示器》.pdf

1、- MIL-I-2165 (3) 66 W 797770b 0330527 LI MIL-I-21685(AS) AMENDMENT - 3 28 March 1979 SUPERSEDING AMENDMENT - 2 1 November 1961 MILITARY SPECIFICATION INDICATOR, COMPASS REPEATER, ROTATING DIG, TYPE MW-2 This amendment forms a part of Military Specification MIL-I-21685(AER) dated 10 November 1958 and

2、 has been approved by the Naval Air Systems Command, Depart- ment of the Navy. s. By this amendment basic MIL-I-21685(AER) is changed to MIL-I-21685(AS) and throughout the specification Bureau of Aeronautics shall be changed to Naval Air Systems Command. t Page 1 Paragraph 2.1, under SPECIFICATIONS

3、Military: Delete MIL-D-5028 Drawings and Data Lists: Preparation of Manufacturers (For Production Aeronautical and Associated Equipment) MIL-L-6880 Lubrication of Aircraft, General Specification for MIL-S-7742 Screw Threads, Standard, Aeronautical MIL-P-7936 Preparation for Delivery of Naval Aeronau

4、tical Equip- ment; General Specification for Add MIL-S-7742 Screw Threads, Standard, Optimum Selected Series; General Specification for Drawings, Engineering and Associated Lists MIL-D-1000 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-23b85

5、(3) bb W 777770b 0330528 b MIL-1-21685 (AS) AMENDMENT - 3 Page 2 Paragraph 2.1, under STANDARDS Military: Delete MS33586 Add MIL-STD-143 MIL-STD-794 MIL-STD-838 MIL-STD-889 MS28105 Delete Metals, Definition of Dissimilar.- . Specifications and Standards, Order of Precedence for the Selection of Part

6、s and Equipment, Procedures for Packaging and Packing of Lubrication of Military Equipment Dissimilar Metals Window, Dial - Aircraft Instrument Cover, Glass Air Force-Navy Aeronautical AN-5727 Glass-Aircraft Instrument Cover . .PUBLICATIONS Air Force-Navy Aeronautical Bulletin No. 143 Specifications

7、 and Standards, Use of (When requesting any of the applicable-documents refer to both title and number. obtained upon application to the Commanding Officer, Naval Aviation Supply Depot, 700 Robbins Avenue, Philadelphia, Code CDS). Copies of this specification and applicable documents may be Pennsylv

8、ania, Attention: Add . 2.1.1 Availability of Documents - (1) When requesting specifications, standards, drawings, and publications, refer to both title and number. tion and applicable specifications required by contractors in connection with specific procurement functions may be obtained upon applic

9、ation to the Commanding Officer, Naval Publications and Forms Center, 5801 Tabor Avenue, Philadelphia, Pennsylvania 19120. Copies of this specifica- page 2 of 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-1-21685 (AS) AMENDMENT - 3 Paragraph

10、3.2 : Delete “ANA Bulletin 143“ and substitute “MIL-STD-143“ Page 3 Paragraph 3.3.2.1 : Delete “MS33586“ and subititute “MIL-STD-889“ Paragraph 3.6.3: Delete “AN5727“ and substitute “MS28105“ Page 6 Paragraph 3.11 : Delete “MIL-D-5028“ and substitute “MIL-D-1000“ Paragraph 3.12.4 : Delete “MIL-L-688

11、0“ and substitute “MIL-STD-838“ Page 9 Paragraph 4.6.5: Delete and substitute 4.6.5 .Synchro null - Make electrical connections as shown in Figure 3. is obtained on voltmeter VI. zero position or 180 degrees away. With the switches closed, voltmeter V2 is then used to distinguish between the 15 volt

12、s which occur in the true electrical zero and the 38 volts which occur in the false electrical zero. The nose of the airplane on the mark shall indicate “N“ on the dial when the synchro is nulled at true electrical zero. a sensitive vacuum tube voltmeter must be inserted between the yellow and .blue

13、 leads, (see Figure 21, the switches opened, and a fine setting made on the rotor position to obtain the minimum voltage, approximately 10 milli- volts. If With switches open, turn the rotor shaft until a minimum voltage The rotor will now be in the true electrical To set electrical zero accurately,

14、 Page 12 Paragraphs 5.1.1, 5.2.1, and 5.3: Delete “MIL-P-7936“ and substitute “MIL-STD- 7 94 I Custodian: Preparing Activity: Navy - AS Navy - AS Project No. 6605-N258 * US. GOVERNMENT PRINTING OFFICE: iS79-603922/1S2 Page 3 of 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-