1、MIL-N-22239C (AS) I! December 1967 Superseding MIL-N-222 3 9B( WP) 15 April 1965 MILIT. RY SPECIF 1 TION NAVIGATIONAL SET, TACAN AN/ARN -52 (V) This specification has been approved by the Naval Air Systems Command, Department of the Navy. 1. SCOPE 1. 1 Scope - The equipment covered by this specifica
2、tion shall, when installed in aircraft, provide bearing, distance and tone identity information to indicate the location of a complementary surface station with respect to the aircraft. information to indicate the link distance with respect to a similarly equipped aircraft, This equipment is the air
3、borne portion of the short range air navigation system known as TACAN (Tactical Air Navigation). The equipment shall also provide, as a discrete auxiliary function, ,+l. 2 Classification - The Navigational Set, TACAN, AN/ARN-52(V) shall consist of the items listed in 6. 7. *1.3 Associated Equipment
4、- The equipment shall operate with the following associated equipment, or their equivalents, which shall not be supplied as part of the AN/ARN-52(V). up to three ID-633/U, or AQU-4/A or thereof. in addition, it will provide outputs for instrument combinations indicated in The equipment will provide
5、necessary inputs for driving LQ-1013/A or any equivalent combination paragraph 3.5.1.1. (1) Indicator, Bearing-Listance - Heading ID-663/ U (2) Indicator, Course ID-387/ARN (3) indicator, Course ID-25OA/ARN (4) Indicator, Range ID-388/APN (5) Switch, Radio Frequency Trans- mission Line SA - 52 1 / A
6、 (6) Antenna AT-741/A (or electrical (7) Horizontal Situation indicator ID-l013/A (8) - Horizontal Situation Indicator AQU-4/A equivalent ) FSC 5826 ,- -1- i -_ _-_I (MIL- 1-2 20 75) (MIL- I- 92 2 9) (MIL - C - 58 2 4) (MIL-L-18955) (MIL-S-25879) (MIL-A - 2 5 708) .Z (MIL- 1-23 366) (MIL-1-2 7848) P
7、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I 2, APPLICABLE DCC UMENTS specified herein, 3 REQUIREMENTS fulfillment of major design objectives shall be the prime consideration, in so doing the following shall govern: (i) Microelectronic items shal
8、l conform to requirements specified herein, Other parts and materials requirements shall conform to Specification MIL-E-5400. (2) (3) Nonrepairable subassemblies, as outlined in Specification MIL-E-5400, shall be used when practicable. The general size of the subassembly and the amount of circuitry
9、to be Nonrepairable subassemblies must be reliable. (See 6.4) included therein shall be approved by the procuring activity. I (4) When previously produced models of this equipment did not use nonrepairable subassemblies, the design shall not be changed to employ nonrepairable assemblies without the
10、approval of the procuring activity , Nonstandard Parts and Materials Approval - Approval for the use of nonstandard. parts and materials cincluding tubes, transistors a-d diodes) sha2; .;e obtained as outlined in Specification ML-E-5LOO. f3.2.1 Provided by IHSNot for ResaleNo reproduction or network
11、ing permitted without license from IHS-,-,-MIL-N-22233C 58 m 3937906 0350872 O MIL - N-2 2 23 9C (AS ).) 3.3 Design and Construction - The equipment shall conform with all the applicable requirements of Specification MIL-E-5400 for design, construction and workmanship, except as otherwise specified
12、herein. 3.3.1 Total Weight - The total weight of the equipment excluding cables, shall be a minimum consistent with good design and shall not exceed 51 pounds. 3.3.2 Reliability: 3.3.2. 1 Operational Stability - The equipment shall operate with sktisfactory performance, continuously or intermittentl
13、y for a period of at least 250 hours without the.necessity for readjustment of any controls which are inaccessible to the operator during normal use. 3. 3.2.2 Operating Life - The equipment shall have tota operating life of 5000 hours with reasonable servicing and replacement of parts. Parts requiri
14、ng scheduled replacement shall be specified by the contractor. 3. 3.2. 3 Equipment Reliability in Mean-Time-Between-Failures (MTBF) - The e.quipment shall have 150 hours of mean (operating) time between failures when tested and accepted as outlined under the requirements of 4.4.3. *3.3.2.4 Time Tota
15、lizing Meter - The equipment shall contain time totalizing meters in accordance with Specification MIL-M-7793. Meters shall be included in the following units: Unit RT- 3 8 4 f A RN- 52 (V) RT -38yRN-52(V) RT -8 93 ARN- 52 (V) 3.3.3 Cabling and Connections: 3.3.3. 1 Cables and Connectors - The equip
16、ment shall provide for the use of cables and connectors in accordance with Specification MIL-E-5400. 3.3.3.2 Interconnection Cabling - The equipment shall be capable of satisfactory operation using external wiring in accordance with the applicable requirements of Specification MIL- W-5088. The exter
17、nal wiring shall be unshielded, except that a minimum number of the individual wires may be shielded when demonstrated as necessary to meet interference control requirements and provided the assembly of the cable to its plugs may be easily accomplished. External cables and that portion of the connec
18、tors attached to the cables shall not be supplied as part of the equipment. 3.3.4 Control Panels - All rack or console mounted control panels shall conform to the applicable requirements of Specification MIL-C-6781. of all control panels must be approved by the procuring activity prior to preproduct
19、ion testing. The configuration Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3.5 Interchangeability of Reordered Equipment - For reordered equipment interchangeability shall exist between units and all replace- able assemblies, subassemblies, and
20、 parts of a designated model of any previausly manufacturrd equipment, supplied or deeignated by the procuring activity. 3. 3.6 interference Control - The generation of radio inter- ference by the equipment and the vulnerability of the equipment to radio interfor- ence shall be controlled within the
21、 limits of Specification MIL-1-6181. 3.3.7 Maintenance Provisions and Field Testing - Provisions for maintenance shall be as specified in Specification MIL-E-5400, Specific test pointa and test facyities shall be provided to the greatest extent practicable for ease of field testing and maintenance.
22、3.3.8 Nomenclature and Nameplates - Nomenclature assignment and nameplate approval for equipment identification shall be in accord- ance with Specification MIL-N-18307. 3.3.9 Standard Conditions - The following conditions shall be used to establish normal performance characteristics under standard c
23、onditions and for making laboratory bench tests, Temperature Room ambient (25OC f 5C) Al ti tude Normal ground Vibration None Humidity Room ambient-up to 90% relative humidity Input power voltage 115 f 1.0 VAC and - 27.5 f O. 5 VDC 3.3.10 Service Conditions - The equipment shall operate satisfactori
24、ly under any of the environmental service conditions or reasonable combination of these conditions as specified in Specification MIL-E-5400 for Class 3X equipment, except as modified herein: 3.3. 10.1 Vibration - The equipment shall operate satisfactorily when subjected to the vibration requirements
25、 of Curves IV and II of Specification MIL-E- 5400, 3, 3, 10.2 Temperature - The equipment shall operate satisfac- torily when subjected to the temperature requirements of Specification MIL-E-5400 TABLE II Class 3 equipment except that the requirement in Column III for short time operation shall not
26、apply. Further more, the maximum nonoperating temperature shall be 95OC. -4- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-N-22239C 58 7999906 OL50874 4 MIL-N-22239C (AS) 3.3.10.3 Altitude - The maximum altitude shall be 75,000 feet. 3.3. 10.4
27、Cooling - Forced air cooling shall be used. The cooling air requirements shall be consistent with the Heat Transfer Design requirements of Specification MIL-E-19600 for type A modules. procuring activity a cooling air graph which shall show total air flow versus inlet air temperature. graph. cooling
28、 air source when the equipment is energized, The contractor shall submit to the The total hea dissipation within the equipment shall be indicatedon the Provisions shall be made to supply 1 Amp. at 115 VAC to power an external 3.3. 11 . Warm-up Time - The time required for the equipment to warm up pr
29、ior to operation shall be kept to a minimum and shall not exceed 90 seconds under standard conditions and 3 minutes at extreme service conditions. 3.3.12 Primary input Power Requirements - The equipment shall meet all applicable requirements of MIL-STD-704 and shall give specified performance from t
30、he following power sources with characteristics as defined in MIL-STD-704 having limits as specified therein. amounts. The power required shall not exceed the specified (1) AC Power (Single Phase) 115V, Category B, 255W. (2) DC Power 28V, Category B, 2.2 Amps. *3.3.12.1 Primary input Power for Assoc
31、iated Equipment - 26VAC and 115 VAC power as required for remote indicators and in 3.3.10.4 shall be delivered from the primary source. 3. 3. 12.2 Degraded Performance - Degraded performance will be permitted for transients not exceeding O. 5 seconds during normal electric system operation. Operatio
32、n shall return to normal with no resulting damage to the equipment. 3.4 Performance - Unless otherwise specified, values eet forth When reduced performance under the to establish the requirements for satisfactory performance apply to performance under both standard and extreme service conditions. ex
33、treme conditions is acceptable, tolerances or values setting forth acceptable variations from the performance under the standard conditions will be specified. *3.4.1 Operation - A working assembly of the equipment when properly interconnected shall transmit to and receive from a similarly equipped c
34、omplementary aircraft or a complementary navigation beacon a combination of pulsed signals from which it shall derive and process the information necessary to: -i -5- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-N-2 2 2390 (As) Continuously di
35、s pi ay the bearing to the beacon in the REC (receive) and T/R (transmit-receive) (1) indicate the deviation of the aircraft from the selected course or beacon radial in the REC (receive) and T/R (transmit-receive) modes, (2) indicate the distance to the beacon in the T/R (transmit -receive) mode, (
36、3) indicate the distance to the complementary aircraft in the A/A (air-totair) mode, (4) Transpond to the complementary aircraft s interrogations in the A/A (air-to-air) mode, (5) Identify, by aural idication, the beacon to which the equipment is channeled in the REC (receive) and T/ R (transmit-rec
37、eive) modes, (6) Automatically select, for satisfactory performance, one of two associated antennas in the REC (receive), T/R (transmit-receive) and A/A (air-to-air) modes, (7) Furthermore, the equipment, independently of the signals received from the beacon or complementary aircraft, shall provide
38、a blanking pulse output during the time of its own transmission in the T/R (transmit-receive) and A/A (air-to-air) modes which will cause blanking of other equipment operating in the same frequency band, 3.4.2 Characteristics of TACAN Signals - This equipment shall operate with pulse code and pulse
39、amplitude type signals of a surface or air facility meeting the requirements of MIL-STD-291. * 3.4.3 Frequency Characteristics - One hundred twenty-six (126) crystal controlled frequency channels shall be provideA at one megacycle spacing. In the T/R mode, channels 1 through 63 shall pair receiver f
40、requencies 962 through 1024 megacycles with transmitter frequencies 1025 through 1087 megacycles, and channel8 64 through 12G shall pair receiver frequencies 1151 thraigh 1213 megacycles with transmitter frequencies 1088 through 1150 megacycles, in the REC and T/R modes the receiver shall be tuned i
41、dentically, in the A/A mode, channels 1 through 63 shall pair receiver frequencies 1088 through 1150 megacycles with transmitter frequencies 1025 through 1087 megacycles, and channels 64 through 126 shall pair receiver frequencies 1025 through 1087 megacycles with transmitter frequencies 1088 throug
42、h 1150 megacyclee, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3rd. 4. Modulation Characteristics - Modulation characteristics shall be as follows when the RF pulse envelope te detected by a linear detector: .-! (1) Puise Top - The instantaneous
43、magnitude of the pulse shall not, at any instant between the point on the leading edge which is 95% of the pulse amplitude and the point on the trailng edge which is 8570 of the pulse amplitude, fall below Q5% of the pgdse amplitude. (2) Pulse Duration - The pulse duration measured between the 50% a
44、mplitude pon? shall be 3.5 4.36.3 be actuated and the flag shall disappear when reliab it shall also provide for manual selection of the REC, T/R, and A/A modes of operation, It shall provide for manual selection of any one of 126 channels assfgned to the receiver-transmitter. (2) (3) It shall provi
45、de for manual control of the volume of the aural tone of the beacon identification. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL - N- 2 2 2 3 9 C (AS I 3. 5. 2.2 Form Factor - The form factor of Control C-!2010 ARN-52(V) shall comply with Figu
46、re 3. 3. 5.2.3 exceed 2 pounds, Weight - The weight of the control unit shall not 3.5.2.4 Contents - The control unit shall contain the following: Function Selector Switch Channel Selector Switch Identity Tone Output Control Panel Lights Channel Servo Bridge Circuits Connector MS3102A-20-27s 3. 5.2.
47、 5 Controls - The Control Unit shall provide the following controls: 3.5.2.5. 1 Function Selector - The function selector shall be a four position rotary switch to provide selection of the operating functions which shall be marked OFF, REC, T/R, and A/A, respectively in a clockwise order. The select
48、or switch shall control the receiver-transmitter as follows: (1) In the OFF position, all primary power to the receiver-transmitter shall be off, (2) In the REC position, the receiver-transmitter shall be energized, allowing the receiver portion of the unit to operate for bearing and identity tone f
49、unctions on any channel, (3) in the T/R position, the transmitter portion of the unit will also be energized and in addition to bearing and identity tone functions will allow the transmission of interrogation pulses to the ground beacon and receive the distance response pulse from the beacon as distance information, (4) in the A/A position, the receiver-transmitter shall be energired and perform as a transponder for distance informati
