1、f MIL-R-83858 58 979970b 0372326 7 i F-01-6 MIL-R-81858 (AS) MILITARY SPECIFICATION RADAR SETS AN/APS-l15B AND AN/APS-122 This specification has been approved by the Naval Air Systems Command, Department of the Navy 1. SCOPE 1.1 Scope - The equipments covered by this specification shall . be two air
2、borne search radars which shall provide means for searching for and detecting surface targets. The AN/APS-llSB shall be a dual radar set for use where full azimuth coverage must be obtained by a dual (fore and aft) installa- tion, azimuth coverage can be obtained with a single antenna. The AN/APS-12
3、2 shall be a single radar set for use where the desired 1.2 ClassificatXon - The AN/APS-llSB and the AN/APS-122 Radar Sets shall consist of the following items: ITEM TYPE DESIGNATION APPL. PARA. - Antenna (two required for AS-2146/APS-115 3.5.1 AN/APS-llSB) Radar Receiver-Transmit ter RT-889/APS-115
4、 3.5.2 (two required for AN/APS-l15B) Antenna Position Programmer MX-7930B/APS-115 3.5.3 Antenna Control C-751lA/APS-115 3.5.4 Radar Set Control (two required c-7512 /m-115 3.5.5 for AN/APS-llSB) 1.3 Associated Equipment - This equipment shall operate with the associated equipment listed in 6.6. 2.
5、APPLICABLE DOCUMENTS 2.1 General - The following documents form a part of this specification to the extent specified herein, documents in effect for the previous procurement. However, in lieu of the issue listed, the contractor shall use the latest issue in effect of these documents where feasible.
6、performance, or interchangeability of any replaceable part, then the issue of the document listed below shall be used. Listed are the issues of the If the use of the latest issue will affect design FSC 5841 - THIS DOCUMENT CONTAINS a PAGES. Provided by IHSNot for ResaleNo reproduction or networking
7、permitted without license from IHS-,-,-MIL-R-L5 5 U 7777906 OL72127 O U MIL-R-81858 (AS) SPECIFICATIONS Military MIL-W-5088C MIL-E-54OOH MIL-T-5422E (2) MIL-I-6181D (3) MIL-C-6781B MIL-M-7793C(1) MIL-E-17555 MIL-Ty18303A MIL-S-20708C MIL-N-18307D MIL-T-23103 Industry ARINC Report No. 407 STANDARDS F
8、ederal FED-STD-3 (1) Wiring, Aircraft, Installation of Electronic Equipment, Aircraft, General Specification for Testing, Environmental, Aircraft, Electronic Equipment Interference Control Requirements, Aircraft Equipment Control Panel, Aircraft Equipment, Rack or Console Mounted Meter, Time Totaliz
9、ing Electronic and Electrical Equipment and Associated Repair Parts, Preparation for delivery of Test Procedures, Preproduction, Acceptance and Life for Aircraft Electronic Equipment, Format or Synchros, 60 and 400 Cycles, General Specification for Nomenclature and Nameplates for Aeronautical Electr
10、onic and Associated Equipment Thermal Performance Evaluation, Airborne Electronic Equipment, General Requirements for Synchro System Manual Colors, Aeronautical Lighting 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81858 58 7777906 0372128
11、 2 MIL-R-81858 (AS) Military MIL-STD-454A MIL-STD-704A MIL-STD-78U MIL-STD-785 MIL-STD-794 MS-173221) Ms-25212C PUBLICATIONS AR-5 AR-34 AR-10 2.1.1 and publications, Standard General Requirements for Electronic Equipment Electric Power, Aircraft Characteristics and Utilization of Test Levels and Acc
12、ept/Reject Criteria for Reliability of Nonexpendable Electronic Equipment Requirements for Reliability Program (For Systems and Equipment) Parts and Equipment, Procedures for Packaging and Packing of Meter, Time Totalizing, Miniature Digital, 115 Volt, 400 Cycle Control Panel, Console Type, Aircraft
13、 Equipment, Basic Dimensions Microelectronic Devices Used in Avionic Equipment, Procedures for Selection and Approval of Failure Classification for Reliability Testing, General Requirements for Maintainability of Avionics Equipment and Systems; General Requirements for Availability of Documents (1)
14、When requesting specifications, standards, drawings, refer to both title and number. .Copies of this specification and applicable specifications required by contractors in connection with speci- fic procurement functions may be obtained upon application to the Commanding Officer, Publications and Fo
15、rms Center, Code 105, 5801 Tabor Avenue, Philadel- phia, Pennsylvania 19120. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-L58 58 = 9779906 0372327 Lt m MIL-R-81858 (AS) 3. REQUIREMENTS 3;l Preproduction - This specification makes provision
16、 for pre- production testing. 3.2 Parts and Materials - In the selection of parts and materials fulfillment of major design objectives shall be the prime consideration. so doing, the following shall govern: In (1) Microelectronic Technology shall be considered and microelectronic items shall conform
17、 to requirements specified herein. (2) Other parts and materials requirements shall conform to Specification MIL-E-5400. (3) Nonrepairable subassemblies shall be used in accordance with Specification AR-10 and as outlined in Specifica- tion MIL-E-5400. (4) When previously produced models of this equ
18、ipment did not use nonrepairable subassemblies, the design shall not be changed to employ nonrepairable assemblies with- out the approval of the procuring activity. 3.2.1 Nonstandard Parts and Materials Approval - Approval for the use of nonstandard parts and materials (including electron tubes, tra
19、nsistors and diodes) other than microelectronic devices shall be obtained as outlined in Specification MIL-E-5400. approved as outlined in AR-5. Microelectronic devices shall be 3.2.2 Microelectronic Modular Assemblies - When used, Micro- electronic Modular Assemblies shall meet the requirements of
20、Specification AR-5. Conformal coatings, encapsulants, embedments or potting materials used with modular assemblies containing integrated circuits and discrete parts shall be easily removable without damage to the assembly. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted withou
21、t license from IHS-,-,-5 MIL-R-81858 (AS) 3.3 Design and Construction - The equipment shall comply with all the applicable requirements of MIL-E-5400, class U equipment, for design, construction and workmanship, except as otherwise -specified herein. 3.3.1 Total Weight - The total weight of the equi
22、pment, excluding cables, shall be a minimum consistent with good design and shall not exceed 530 pounds for the AN/APS-l15B and 301 pounds for the AN/APS-122. 3.3.2 Reliability - The reliability program for the equipment as On reorder specified herein shall be in full compliance with MIL-STD-785. fr
23、om a supplier who has previously produced the equipment, the program pre- viously used may be continued unless otherwise indicated in the contract or order. 3.3.2.1 Operational Stability - The equipments shall operate either on a continuous or intermittent basis with satisfactory performance for a p
24、eriod of at least 150 hours for the AN/APS-l15B and of at least 270 hours for the AN/APS-122 without the necessity for readjustment of any controls which are inaccessible to the operator during normal use. 3.3.2.2 Operating Life - The equipments shall have a total operating life of 5000 hours with s
25、cheduled maintenance. Parts requiring replacement by scheduled maintenance, and reliable life of such parts shall be specified by the supplier and reviewed and approved by the procuring activity. 3.3.2.3 Reliability in MTBF (Mean Time Between Failures) - The Equipments, including any built-in-test p
26、rovisions, shall have 150 hours of mean (operating) time between failures for the AN/APS-l15B and 270 hours of mean (operating) time between failures for the AN/APS-122 when tested and accepted as outlined under the requirements of 4.4.3. 3.3.2.4 Time Totalizing Meter - The equipment shall contain t
27、ime totalizing meters in accordance with MIL-M-7793. Meters shall have a range of 9999 hours, and shall be included in the following units: - Unit Type of Meter Receiver Transmitter MS-17322-9 Antenna Position Programmer MS-17322-9 Provided by IHSNot for ResaleNo reproduction or networking permitted
28、 without license from IHS-,-,-MIL-R-81858 (AS) 3.3.3 Cabling and Connections 3.3.3.1 Cables and Connectors - The equipment shall provide for the use of cables and connectors in accordance with MIL-E-5400. 3.3.3.2 Interconnection Cabling - The equipment shall be capable of satisfactory operation usin
29、g external wiring in accordance with the applicable requirements of Specification MIL-W-5088. The external 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 assemb
30、ly of the cable to its plugs may be easily accomplished. attached to the cables shall not be supplied as part of the equipment. External cables and that portion of the connectors 3.3.4 Control Panels - All rack or console mounted control panels shall conform to the applicable requirements of Specifi
31、cation MIL-C-6781, The configuration of all panels must be approved by the procuring activity prior to preproduction testing. 3.3.5 Interchangeability - The equipment shall meet the interchange- ability requirements of Specification MIL-E-5400. 3.3.6 Interference Control - The generation of electrom
32、agnetic interference by the equipment and the vulnerability of the equipment to radio interference shall be controlled within the limits of Specification MIL-1-6181 except as noted herein. 3.3.6.1 Short Duration Interference - Interference resulting from manual operation of switch may deviate from t
33、he limits of MIL-1-6181 as indicated below: Maximum Duration Maximum Recurrence Deviation Permitted 1 second Once in 3 minutes 30 db 3.3.7 program, built-in-test features, construction and packaging, provisions for test points, and other maintainability parameters shall be as specified in Specificat
34、ion AR-10. Provisions for Maintainability - The maintainability 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-L858 58 777770b 0172132 LI W 3.3.7.1 Modular Design - The module concept shall be used in the internal design of equipments. Circu
35、its shall be designed so that a defec- - tive functional loop can be isolated to a module or a group of modules. Module as used herein is defined as any segment of an equipment that can be removed and reinserted without a requirement for soldering (Brazing), welding or other similar techniques. 3.3.
36、7.2 Module Accessibility - Modules shall be arranged so that access to any module does not require removing adjacent modules or parts other than access panels. Access for adjustment and module replace- ment in avionic equipment shall be from one side (or the front) only. It is permissible to have mo
37、dule trays which are removable from the front of the Receiver-Transmitter unit,. and which contain modules accessible from the top. also permissible in the receiver section. missible from a third side. Two side access is Waveguide disconnect is per- 3 . 3 J.3 Fault Isolation Test Points - Test point
38、s shall be provided for isolating faults beyond the scope of computer diagnostic test program, BIT (built-in-test ), or when other provisions have not been made for fault isolation to the module level. for those equipments incorporating BIT , test points shall be provided to repair the BIT. in the e
39、vent of failure. The test points shall be readily accessible with the unit in its normal aircraft mounting config- uration. If individual test points are not used, the test points shall be grouped in multi-pin receptacles, with caps provided. durable construction, showing waveforms, voltages, and ot
40、her applicable measurements related to each pin, shall be attached to the equipment. In addition, A diagram of 3.3.7b Special Support Equipment - Self-test features shall No special support be designed to obviate the need for any special support equipment for pre- flight check, post flight check, or
41、 fault isolation. equipment shall be required except as expressly authorized by the procuring activity. that all peripheral equipment is operating satisfactory and is readily available . For the purpose of this specification, it is assumed 3.3.7.5 Lubrication Requirements - Lubrication requirements
42、shall be held to a minimum. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-L5 58 m 7q770b 0372333 b MIL-R-81858 (AS) 3.3.76 Lubricant Types - Lubricants other than military approved types, shall not be used except as expressly authorized by
43、the Procuring Activity. 3 . 3 . 7 .7 Lubrication Provisions - Provisions shall be provided to enable all lubrication to be performed with the unit in its normal aircraft mounting configuration, 3 . 3.7 -8 Maintenance Concept - This avionic system is programed to a “hands-off“ concept of maintenance.
44、 Equipments are not scheduled for removal and bench check (except where unavoidable for periodic lubrication of electro-mechanical units) and are maintained by corrective maintenance procedures. equipment from its installed position in the aircraft and consists of fault isolation to individual modul
45、es, replacement of faulty modules and system checkout. Where feasible, fault isolation will be computer initiated utilizing a diagnostic program; where not feasible, equipments will provide self test features or readily accessible test points to accommodate standard test equipment affording fault is
46、olation to the individual replaceable module. connectors) it will be possible to isolate faults, repair and checkout the equipment with an MTTR (Mm) of 0.6 hours or less for organizational level corrective maintenance. defined as the following: Corrective maintenance is accomplished without removing
47、 the In 95 percent of all functional features (excluding wiring and Organizational level corrective maintenance is (1) Recognition of a fault (2) Isolation of a fault to a module or a functional loop (3) Module replacement (4) Check out of the equipment All elapsed time used in MTTR calculations sha
48、ll be accumulated after the fault has been isolated to the radar set. for performance of readiness testing will be built into each system, subsystem, and equipment to provide preflight readiness indications and to check performance levels when an out-of-tolerance condition is suspected. Circuit brea
49、kers will be used in lieu of fuses whenever required to protect parts and circuits likely to carry an overload due to failures or poor adjustment and should be of types and ratings readily available in the Navy supply system. In addition, the capability 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-81858 58 m 777790b 0132134 8 = MIL-R-81858(AC) 303.8
