1、MIL-D-5025C 58 9797906 OLLi7892 2 MIL-D-5025C(W EP) . 15 DECEMBER 1961 SUPERSEDING 1 MARCH 1956 MlL-D-5025B (AER) MILITARY SPECIFICATION DIRECTION FINDER GROUP ANIAPA-69A AND ANAPA-69C This specification has been approed by the Bureau of Naval Weapons, Department of the Navy. -. 1. SCOPE - -The equi
2、pment specified herein has been designed for direction finding in the frequency range of 180 to 10750 rnc for the AWAPA-69A equipment3 and 50 to 10750 mc for the AWAPA-69C equipments. The AWAPA-69 series shall consist of 3 interchangeable rotating antennas, an indicator and a console control unit fo
3、r use with Countermeasures Receiving Set ANALR-8 or similar receivers on Naval or other Military aircraft to permit true bearings to be taken on sources of radar and radio signals. The equipment shall display each receiver signal as an antenna pattern on a CRT with distance from the center of the CR
4、T screen representing rnagnitde of the signal, and position around the CRT representing true bearing on the signai source. Classification-The Direction Finder Group, Radar, AN/APA-69 series shall consisl of the following units. . 1.1 12 ANIAPA69A COMPOSITION m Antenna Assembly Antenna Assembly Anten
5、na Assembly Antenna Reflector Antenna Drive Antenna Coupler kimuth-Panoramic indicator Direction Finder Control Mounting AS435IAPA-69 AS4341APA-69 AS-43WAPA-69 - AT-18WAPA-69 TG-8A/APA.69 CU-17NAPA-69 - IPSl AIAPA-69 . C-527NAPA-69 MT-I 005/APA-69 Applicable 3.4.8 3.4.9 3.4.1 O 3.4.11 3.4.1 3.4.1 2
6、3.4.3 3.4.4 3.4.1 3 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-D-5025C 58 9777906 0347893 4 H MIL-D-5025C( WEP) m Antenna Assembly Antenna Assembly Antenna Assembly Antenna Reflector Antenna Drive Antenna Coupler Azimuth-Panoramic Indica
7、tor Direction-Finder Control Mounting AN/APA-69C COMPOSITION AS-7751APA-69 AS-676lAPA-69 AS46/APA-69 AT-1 WAPA-69 TG-5O/APA-69 CU-174/APA-69 1P-81NAPA-69 C-1321 IAPA-69 MT-1 OOWAPA-69 Applicable l3wlWx 3.4.6 3.4.7 3.4.10 3.4.11 3.4.2 3.4.12 3.4.3 3.4.5 3.4.1 3 IFSC 5826 2. APPLICABLE DOCUMENTS 2.1 -
8、The following documents of the issue in effect on the date of invitations for bids, form a part of this specification to the extent specified herein. SPECIFICATIONS Mildatv MIL-C-172 MIL-T-5422 MlL-E=WO MIL-C-6781 MIL-1-6181 MIL-N-18307 MIL-T-18303 MIL-W-5088 MIL-E-17555 MIL-F-25 7 73 MIL-E4682 Case
9、s; Bases, Mounting: and Mounts Vibration (For Use with Electronic Equipment in Aircraft) Testing, Environmental, Aircraft Electronic Equipment Electronic Equipment, Aircraft, General Specifications for Control Panel; Aircrafi Equipment, Rack or Console Mounted Interference Limits and Tests; Aircraft
10、 Electrical and Electronic Equipment Nomenclature and Nameplates for Airborne Electronic and Associated Equipment Test Procedures; Preproduction and Inspection for Aircraft Electronic Equipment, Format for Wiring, Aircraft, Installation of Electronic and Electrical Equipment and Associated Repair Pa
11、rts, Preparation for Delivery of Fastener, Control Panel, Aircraft Equipment Electron Tubes, Choice and Application of 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- El-207 Control Panels, Electrical and Electronic Equipment, Rack or Console Moun
12、ted, Installation of STANDARDS Militarv MIL-STD-704 MS 25245 SAR-300 Electric Power, Aircraft, Characteristics and Utilization of Connections, Input Power Airborne Electronic Equipment; 28-Volt DC, 11 5-Volt Singie-Phase AC, or 11 5/200-Volt 3-Phase AC, or Combinations Change Proposals, Material Cha
13、nges and Electronic Material Bulletins, Preparation of 2.2 nm (1) When requesting specifkations, standards, drawings, and publications refer to both title and number. Copies of this specification and applicable specifications required by contractors in connection with specific procurement functions
14、may be obtained upon application to the Commanding officer, Naval Supply Depot, Code CDS, 5801 Tabor Avenue, Phiiadelphia 20, Pennsylvania. 3. REQUIREMENTS objectives shall be the prime consideration. In so doing the following shall govern: 3.1 parts and M 1.6 amp at 6.3 vac (2) AN/APA-69Cequipment
15、A-CpoWet(s#igie-ptrase)115v,CaiegoryB49va D-C Power 2 i.6amp at 6.3 ya 3.3 3.3.1 eerformance-Ths equipment shall meet the perfonan requirements as specified betow: -The equipment shall present a visual display on the meen of the cathode ray tube. The radiai deflection of the elecbon beam, shaii be p
16、roportional to the sienai strength received, and the beam shall rotate in synchmnm * with aie antenna producing a piot of the radiation pattern of the antenna. of -The accuracy of indication shall be divided into two parts. One of - This error shall be defined as the error between the ml angular pos
17、taon of the antenna drive shaft, and the indicated position on the kidfcator. This error shall not exceed e.5 egrees for any angular positioz af the dtianfrne major lobe of each of the WAPA-69 antennas in an azimuth plane 0.20 for the 1O:i area ratio. For the vertically polarized position of the fee
18、d, the ratios shall not exceed 0.90 for the 5:l area ratio and 0.20 for the. 1O:l area ratio. bS-435/APA-69-At no point in the frequency range from 350 to 1000 mc shall the -standing wave ratio exceed 8 to 1 for horizontal polarization. Production tests points . shall be taken at 350, 500, and 1000
19、me. The ratio of the portion of the area under and -above the curve (standing wave ratio plotted against frequency shall not exceed 0.29 for the horizontai antenna and 0.22 for the vertical antenna. AS-434/APA-69-At no point in the frequency range from 1000 to 5000 mc shall the standing wave ratio o
20、f either the vertical or horizontal antenna exceed 10 to 1. Production test frequencies shall be taken at 1200, 3000, and 4500 mc; the voltage standing wave ratio should not exceed 6, 10, and 7, respectively, for vertical polarization and 8, 10, and 8, respectively, for horizontal polarization. The
21、ratio of the portion above and below the curve shall not exceed 0.3 for either the horizontal or vertical antenna. Antenna Characteristicc - 3.3.6 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I_ MIL-D-5025C 58 9393906 0347893 5 M IL-D-502% ( W E
22、 P) AS-436/APA-6+At no point within the frequency range from 4450 to 10500 mc shall the standing wave ratio of this antenna exceed 4:l. 3.4 3.4.1 TGBNAPA-U-The antenna drive unit shall be mounted on the aircraft for any one of the three ANiAPAS9A antennas specified in paragraphs 1.2 and 3.3.2. The d
23、rive shall be rotatable by a motor mechanism for spinning the antenna in a horizontal plane at speeds specified in paragraph 3.3.4, 3.4.1.1 Form Factor and Mou *The antenna drive unit shall be approximately 11.2-in. long, 8.241. wide, and 7.4417. high. It shall mount on the aircraft by two flanges o
24、n each side of the unit and shall not be vibration mounted. 3.4.1.2 =WeiaM-The weight of the antenna drive unit, excluding antennas and cables shall not exceed 14 Ib. 3.4.1.3 -The antenna drive unit shall contain the following: (1) Drive motor (2) Driving gear system (3) Sine, cosine generator (4) A
25、ntenna mounting pedestal (5) Speed variation switch (6) Video polarization reversal relay (7) Switch for disabling video polarization relay when using AS-436/APA-69 antenna 3.4.1.4 lectncal connections to the unit shall provide the following recep tacles: AN-3102A-18-8P- Power and control cable UG-2
26、90/ however, it may be reworked by the contractor and submitted for acceptance as a production equipment. Promion Sme Test and the fact that the Government may have formulated, furnished or in any way supplied the said drawings, specifications or other data is not te be regarded by implication or ot
27、herwise as in any manner licensing the holder or any other person or corporation, or conveying any rights or permission to manufacture, use or sell any patented invention that may in any way be related thereto. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
