1、M II- R -7 7 24 AQAER) I JULY 1955 Supersedes MILITARY SPECIFICATION MIL-R-7724(Aer) Dated 1 July 1951 RADAR SETS; .m/APS-33, AN/APS-33A, AN/APS -33C, AN/APS -33D, and AN/APS-33F This specification has been approved by the Bureau of Aeronautics, Department of the Navy. 1. SCOPE AND CLASSIFICATION *1
2、. 1 Scope - The radar equipments covered by this specification shall be designed primarily The primary for 360 coverage in revealing the presence and determining the location of surface vessels, aircraft, beacons, and other objects within the area encompassed by the range of the equipment. function
3、is search and the secondary functions are bombing and navigation. *l. 2 Classification - The equipment covered by this specification shall be of five types and , shall consist of the following: Item 1 2 3 4 5 - 6 7 8 9 10 11 12 13 14 zTYP“ Max. Allow. Max. Allow Applicable Units Designation Size (in
4、ches) Weight (Iba) Paragraph H w L/D Antenna Assembly AS -289B/APS -33 96.2 3.3.1 Antenna Assembly AS-378/APS-33A 86.2 3.3.2 Antenna AS-617/AFS-33F 99.2 3.3,.3 *Servo Amplifier AM- 113/APS-33 58 7 t 12zx4- l/ 3.3. 14 4. o 3.3.6* 4. o 3.3.6* 4.2 3.3.7* 4x 72x 11 1% *Pressurizing Unit HD- 16B/AP 4x 78
5、x 51 1% HD- 16A/AP 3.3.8* 15 3 3 Transmitter- Receiver RT- 1014 )/APS-I 8 x 19 x l9;1 48.1 Receiver- Transmitter 3.3.9* 15 3 3 16 RT- 193,( )/APS-31A 8- x 19 x 194 48. 1 3.3. lo* 11.3 3.3. ll* 15 3 -3 Receiver - Transmitter 8-x 194x lY7 48.1 R T- 247( )/APS-31B 16 1 7 Control C - 289A/APS-3 1 5x 1%
6、13 1 7 5 x 10-x 13- 2 16 Radar Set Control C-729/APS-3 1A Control C-970/APS-31B 11.3 3.3. 12* 11.3 3.3. 13* 5 x 15x 1 1316 7 91.3 3.3. 14*.* 33 18 x 22- x 22- MD-60.( )/APS-31 44 Modulator Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Item 15 - 16
7、17 18 20 21 22 23 24 25 26 27 28 29 30 31 Units Synchronizer - Type Designation SN - 36B/APS - 3 1 Gyroscope Unit Junction Box Variable Auto- transformer True Bearing Amplifier Blower Unit Indicator Azimuth-Range indicator Mounting Mounting Mounting Mounting Plate Mounting Plate Mounting Mounting Vi
8、sor Visor - _ CN-51/APS-31 or CN -5 lA/APS -3 1 J- 164/APS- 3 1 TF- 106A/U AM-llOA/APS-33 or AM- llOB/APS-33 HD-l5/U or HD- 15A/U ID- 162A/APS-31 IP- 166/APS-33B MT-447/APS-31 or MT -447A/APS - 3 1 MT-446/APS-3 1 MT-IOI/AP MT - 445/APS - 3 1 MT-444/APS-3 1 MT-448/APS-33 or MT-448A/APS-33 MX-5 1 l/AP
9、S -3 1 MX- 1269/AP 2 i z Max. Allow. Size (inches) 1 3 114 x 1116 x 22 74x 9gx 1216 3 1 13 7z x 93 x 2Ti; 1- x 35 x 2- 3 1 13 13 3 7 16 8 . * 3 5 64x 5 x 33 3 11 1 5-x 7x 6g 8 11 3 5xx 74x 6 531 gx%x616 7-x586 531 716 3 x 7 x 15 11 8 3 11 9-x 9 x 15- 16 16 7 27 3 x 11zx 232 7 27 3 x llz x 23gz 6x57
10、11 7 7 53 7 6g x 54 x log 351 gx 13x64 311 59 1 13 7- x 78 16 16 55 8 8 x 102 x 123 1- x 78 x 7 6s 33 x 54 x 103 7 33 1 94X94X 11s MIL - R - 7 724A( Ae r) Max. Allow. Weight(1bs.) 41.2 10.3 7.3 O. 32 2.3 7.2 . 7.2 3.25 3.25 12.75 14.1 4.20 4.20 O. 75 1.00 Applicable Paragraph 3.3. 15* 3.3. 16* 3.3.
11、16* 3.3. 17* 3.3. 18* 3. 3. 19* 3. 3. 19* 3.3.20* 3.3.20* 3.3.21* 3.3.22 3. 3.23* 3.3.23* 3.3.2 Bases, Mounting; and Mounts, Vibration (For Use with Electronic Equipment in Aircraft). Electronic Equipment, Airborne, General Specification for. Electric Power, Aircraft, Characteristic of. Interference
12、 Limits and Tests: Aircraft Electrical and Electronics Equipment. Radio: X-band, Airborne-Standard Beacon Provisions. Radar Sets; AN/APS-31, AN/APS-31Al AN/APS-31B, and AN/APS - 3 IC. Radar Sets; AN/APS-38 and AN/APS-38A. Testing: Environmental, Aircraft Electronic Equipment. Wiring, Aircraft, Insta
13、llation of. Nomenclature and Nameplates for Electronic and Associated Equipment. Test Procedures, Preproduction and Inspection, Format for. Radar Sets AN/APS-33, AN/APS-33A, AN/APS-33CI AN/APS-33D, and AN/APS-33F, Installation of. Fasteners, Control Panels, Aircraft Equipment. Marking for Shipment a
14、nd Storage. (1) When requesting specifications, publications, and drawings refer to both title and number. Material or Bureau of Aeronautics Representative. All requests should be made via the Cognizant Inspector of Naval (2) Copies of this specification and applicable specifications and publication
15、s may be obtained upon application to the Commanding Officer, Naval Air Station, Johnsville, Pennsylvania, Attn: Technical Records Division. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I . . . . . . ,._._ -._.-_- . _ . - _.-.-_-.-.-*.I-. . . MI
16、L - R - 7 7 2 4A( Ae r) (3) Copies of applicable Bureau of Aeronautics Drawings may be obtained upon application to the Bureau of Aeronautics, Navy Department, Washington 25, D. C. Attn: Electronics Division 2.4 zpplicable subsidiary specifications are in conflict, the following precedence shall app
17、ly: Precedence - When the requirements of the contract, this specification, or (I) Contract - The contract shall have precedence over any specification. (2) This Specification - This specification shall have precedence over all applicable subsidiary specifications. subsidiary specifications where ap
18、plicable, shall be specifically approved in - writing by the Bureau of Aeronautics. Any deviation from this specification, or from 3. (3) Referenced Specifications - Any referenced specification shall have precedence over all applicable subsidiary specifications referenced therein. specifications sh
19、all apply to the extent specified. All referenced REQUIREMENTS *3.1 design objectiires shall be the prime consideration. Parts and Materials - In the selection of Parts and Materials, fulfillment of major In so doing the following factors shall govern: (1) Parts and Materials as approved by Specific
20、ation MIL-E-5400 shall be given first consideration. (2) When the contractors can demonstrate that the use of standard AN or JAN parts or materials will not fulfill the design objectives because of size, weight, performance, or other reasons, materials and parts shall be used which most nearly meet
21、or exceed the performance requirements of the respective standard specification. When a non-standard part is used, the meeting of general material requirements such as non-inflammability, fungus resistance, non-toxicity, etc. and the meeting of environmental conditions as required by Specification M
22、IL-E-5400 or MIL-T-5422 must be of prime consideration. In the selection of parts, the above considerations shall apply if the assembly is to be built for detail part maintenance. In the event the entire assembly is built to be expended, the assembly shall be constructed so that the unit as a whole
23、will pass material, electrical, and environmental tests, without consideration to the quality of the detail parts. approved by the Bureau of Aeronautics. (3) (4) Any assembly built to be expended shall first be e3.1.1 standard parts and materials shall be obtained as outlined in Specification MIL-E-
24、5400 except as follows : Non-standard Part Approval and Material Approval - Approval for the use of non- (1) Mechanical parts are expected to meet the material requirements of Specification MIL-E-5400, and shall be submitted as non-standard parts only when the material requirements are not met. Non-
25、standard parts, as defined in Specification MIL-E-5400, of an electrical nature must be submitted for approval before the preDroduction eauipment is (2) delivered to the Bureau of Aeronautics. forwarded by the contractor before the part is purchased or fabricated. In addition to or in lieu of the no
26、n-standard parts data sheet, the contractor is requested to submit itemized lists of the parts, their sources, and the contractors drawing or purchase specification covering the parts. The request for approval must be 5 ,- Y . 1 . _ . . . . i . t-.lr: . . .- . - ,. . ,._ . ._ . , . (_._._. . . I . ,
27、. o . . . . . -.- . -. . . . . . . - . . 7- . . . .-_. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-7724A(ker) *3.1.2 improvement in the performance and reliability of the specific functions beyond the requirements of this specification are
28、objectives in the design of the equipment specified herein. materials, parts. and processes other than those required by Specification MIL-E-5400 shall be investigated and when it appears that a substantial reduction in size and weight or improvement in simplicity of design, performance, or reliabil
29、ity can be realized by their use, a request for approval of a non-standard part shall be submitted to the Bureau of Aeronautics for Consideration. Design Objectives - Minimum size and weight, simplicity of operatior;, and an The use of Each request should be accompanied by complete supporting inform
30、ation. Plug-in Assemblies - The use of easily disconnect plug-in assemblies of one or more related circuits shall be investigated with a view towards reduction of size and weight, simplification of operation imd maintenance, or improvement in performance. . _ .- *- . . _-.- . . -.- .- . I- -. _.- *-
31、.- . 3.1.3 ,. ,. *3. 1.4 accordance with the requirements of Specification MIL-Ei5400, except where there is a counterpart listed in the U.S. Navy Reliable Tube List (copies-may be obtained from the Bureas of Aeronautics) the reliable version. Shll be used. approved by the Bu%eau of Aeron however, b
32、efore consideration for approval, the contractor must submit the ful, the pressure may remain constant or vary at a rate as high as O. 5 inches of mercury per second. *3.2.2.2 or CN-SlA/APS-31; shall operate satisfactorily after storage in any position for a period of one year. Altitude - Operation
33、shall be at barometric pressures ranging f.om 30 inches of Equipment-Non-operating - The equipment, except for Gyroscope Unit CN-51/APS-3 1 *3. 2. 2.3 GvroscoDe Unit CN-51/APS-31 or CN-51A/P-PS-31, Control C-289A/AFS-31 or C-970/APS-31B, and Constant-Amplitude-Variable-Frequency-Vibration - The equi
34、pment, except foi. -, Radar Set Control C-729/APS-31A shall be vibrated with the frequency varying between 10 and 55 cycles per second at an amplitude of O. 06 inch total excursion, the frequency-varying uniformly from 10 to 55 cycles per second and returning to 10 cycles per second in approximately
35、 one minute. The 6 . . . _ -.- - - ._-. _ . ._ . . . . . . . . -_. . . - . . . . - -. - . .-. -_.- -.- -.- . . . .- . . .- .- . .-._._ _- . . : . -. :. . - . . - . _.- . . 1 i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-R-7724A(Aer) Gyrosco
36、pe Unit and Controls shall be tested as described with O. 02 inch total excnrsion instead of 0.06 inch. c3.2. 2.4 The isolators and shock-mounts with dummy loads shall withstand 30 g without tearing or ripping (bending is permissible). *3.2.3 exceed the following: Shock and Acceleration - The equipm
37、ent shall operate satisfactorily after 12 g shock. Total Weight - The total weight of each type equipment, excluding cables, shall not Type1 - 351pomds Type II - 341 pounds Type III - 351 pounds TypeIV - 341pounds TypeV - 357pounds 3.2.4 hours, continuously or intermittently, without necessity for r
38、eadjustment of any controls which are non-acces Bible during flight. Operational Stability - The equipment shall operate with optimum performance for 50 3.2.5 Operating Life *3.2.5. 1 least 200 hours without requiring removal for bench servicing. replacement at the end of this interval to renew this
39、 service life should be specified by the manufacturer. 3.2.5.2 Total Operating Life - The equipment shall have a minimum total operating life of 2,000 hours replacement within this interval and the life of such parts shall be specified by the manufacturer. e3.2.6 Interconnecting Cabling - This equip
40、ment shall be capable of satisfactory operation using external wiring in accordance with SpecificationMIL-W -5088. The external wiring shall be unshielded, except that a minimum number of tne individual wires may be shielded when demonstrated as necessary to meet interference control requirements an
41、d provided the assembly of the cable to its plugs may be easily accomplished. *3.2. 7 connectors in accordance with thgrequirementk of Specification MIL-E-5400. that portion of the connectors which are to be attached to the cables shall not be supplied as part of the equipment. *3.2.8 Specification
42、MIL-E-7894 and shall give specified performance from the following power sources with characteristics as defined in Specification MIL-E-7894 having limits as specified herein. lhe power required shall not exceed the specified amounts. -. Reliable Operating Life - The equipment shall have a reliable
43、operating life of at Parts requiring servicing or . with reasonable servicing and replacement of parts. Parts requiring Gables and Connectors - The equipment shall be designed for the use of cables and However, cables and Input Power Requirements - The equipment shall meet all applicable requirement
44、s of (1) A. C. Power (Single-phase) (a) 115-Volt Variable Frequency Operating Voltage Limits Operating Frequency Limits Reduced Performance Voltage Limits Power (i) 109 to 120 Volts 380 to 1600 c.p. s. 102 - 108 and 121 - 124 Volts 1350 va. 7 Provided by IHSNot for ResaleNo reproduction or networkin
45、g permitted without license from IHS-,-,-(b) 115-Volt Constant Frequency- Operating Voltage Limits Operating Frequency Limits Reduced Performance Voltage Limits Power (i) . 55va. 109 to 120 Volts 380 to 420 c. p. s. 102 - 108 and 121 - 124 Volts (2) A. C. Power (Three-pase) (a) 115-Volt Line-to-Line
46、 Constant Frequency Operating Voltage Limits Opesating Frequency Limits Reduced Performance Voltage L*its Power (3) 150 va; 109 to 120 Volts 380 to 420 CUP. S. 102 - 10.8 and 12 1 - 124 Volts (3) D. C. Power 28-Volt System Operating Voltage Limits . 24 to 31 Volts Power (with fnverter) 682 Watts Pow
47、er (without inverter) 310 Watts 3.2.9 Overload Protection - Overload protection for the equipment shall be provided in the eqpmenf. All parts and circuits of the equipment which are likely .to carry an overload due to any failures or poor adjustments shall have suitable protective devices or publica
48、tion, or drawing as specified in paragraph 2 herein conflict with requirements for interchangeability, the interchange - ability requirements shall govern, except that heat-exchanger and cooling requirements for the Modulator and Receiver -Transmitter units and receiver sensitivity and noise figure
49、requirements shall supercede interchangeability requirements. *32. 14 testing shall meet the requirements of Specification MIL-E-5400. Interchangeability - The interchangeability requir,ements, as specified in Provisions for Maintenance and Field Testing - Provisions for maintenance and field 3.2. 15 Performance 3.2. 15. 1 megacycles per second for Search operation and transmit a
