1、F- 3#-/x- HIL-C-856LI2 58 7799706 0175858 T W MI L -C -85642 (AS ) 14 May 1985 I Beneficial comnents (recomnendations, additions, deletions,) and any pertinent data which may b of use in imDrovinq this docuiiient should be addressed to: Commanding Officer, Naval Air Engineering Center, Systems Engin
2、eering and standardization Department (SESD) Code 93, Lakehurst, NJ 08733, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. MILITARY SPECIFICATION COMIUNICATIONS CENTRAL AN /ASC -26 This specification is appr
3、oved for use by the Naval Air Systems Comnand, Department of the Navy and is available for use by all departments and agencies of the Department of Defense. . I. SCOPE 1.1 Scope. This specification establishes he design, performance, and acceptance requirements for the AN/ASC-26 Comunica tions Centr
4、al hereinafter referred to as ASC-26. The ASC-26 is intended for use in UH-1N Hel icopters to provide radio cornunication between marine -task commanders in the he1 icopters, higher headquarters, and supporting combat units. / . THIS DOCUMENT CONTAINS L3z PAGES Provided by IHSNot for ResaleNo reprod
5、uction or networking permitted without license from IHS-,-,-f flIL-C-856qZ 58 7777706 0175857 L MIL-C-85642 (AS 1 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifiratjons and standards. Unless otherwise specified, the folfowinq specifications and standards of the issue listed in that i
6、ssue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation forml:a partof -thfs specification to the extent specified herein. SPECIFICATIONS - ., Mi 1 i tary I DOD-D-1000/1 Drawings, Engineering, and Associated t pm Da ta # MIL-W-5088 Wiring, Aircr
7、aft, Installation of MIL -C-5541 Chemical Films for Aluminum and Aluminum Al 1 oys MIL-S-7742 Screw Threads , Standard, Op timum Sel ec t- ed Series; General Specification for MI L-A-8625 MIL -E-1755 5 MI L -T - 18303 MI L -N - 18307 MIL-H-46855 STANDARDS Mi 1 i tarv MIL -STD-129 MIL-STD-130 Anodic
8、Coatings, for Aluminum Alloys and Al umi num El ec troni c and Electrical Equipment Accessories and Repair Parts; Packaging and Packing of Test Procedures , Produc ti on , Acceptance and Life for Aircraft Electronic Equip- ments, Format for Nomencl a ture and Namepl ates for Aeronau- tical Electroni
9、c and Associated Equipment Human Engineering Requirements for Mil i tary Systems, Equipment and Facilities Marking for Shipment and Storage Identification Marking of U.S. Military P rope r ty 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-85
10、692 58 9999906 0175860 B MI L -C -8564 2 ( AS ) MI L-STD-454 MIL-STD-461 MIL -STD-462 MIL-STD-471 MIL-STD -704 MIL-STD-781 MIL -STD-7 94 Standard General Requi remen ts for Electronic Equipment El ec tromagne ti c Emf scion and Suscep ti - bil i ty Requi rements for the Control of Electromagnetic In
11、terference El ec tromagne ti c Interference Character- is tics, Measurement of Maintainability Demonstration Electric Power, Aircraft Characteristics and Utilization of Re1 i abi 1 i ty Tes ts , Exponen ti al Di s tri bu ti on Parts and Equipment Procedures for Packaging and Packing of MIL-STD-810 E
12、nvi ronmental Test Methods MIL-STD-1472 Human Engineering Design Cri teri a for Military Systems Equipment and Faci 1 i ti es 2.1.2 Other Government documents, drawings, and publications. The following Government documents, drawings and publications form a Dart of this specification to the extent sp
13、ecified herein. Naval Air Svstems Command DRAW I NGS 1067AS 100 1067AS1001 PUBLICATIONS Communi Ca ti ons Central AN/ASC-26 Performance Requirements for the Communications Central AN/ASC-26 NAVAIR AE-070AA-OMP-000 Technical Manual for Communications Central AN/ASC-26 NAVAIR 16-30ARC-159-1, Technical
14、 Manuals for UHF Transceiver 2.1.3 Other publications. The following documents form a part of this specification to th e extent specified herein. which are indicated as DoD adopted shall be the issue listed in the current DoDISS and the suppl emen t thereto, i f appl i cab1 e. -2, -3 AN/ARC-l59(V)l
15、The issues of the documents 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-85bLI2 58 7999706 0175bL T MIL-C-85642(AS) PUBLICATIONS 523-0770254-001118 523-Q770255-101118 523-077 1532-00 11 1A Collins YHF 186 AM/FM Radio Set Instruction Manual
16、, Volume 1 Collins VHF 186 AM/FM Radio Set Ins truc ti on Manual, Vol urne 2 Cal 1 ins VHF 186 -AM/FM Radio Set Ins truc ti on Manual, Vol urne 3 523-0770257-002118 Collins VHF 186 AM/FM Radio Set Ins truc tion Manual , Vol Ume 4 (Application for copies should be addressed to the Collins Telecomnuni
17、cation Products Division, Rockwell International, Cedar Rapids, Iowa 52402-9981) (Copies of specification, standards, handbooks, drawings, and pub1 ications required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by
18、the con trac ti ng off i Cer. ) 2.1.4 Order of precedence. In the event of a conflict beween the text of this specification and the references cited herein, the text of this speci fica ti on s ha1 1 take precedence. 3. REQUIREMENTS 3.1 Item description. The AN/ASC-26 shall consist of two major assem
19、bl les, Radio Set Group OZ-53/ASC-26 and Interconnecting Group ON-252/ASC-26. and the Interconnecting Group ON-252/ASC-26 is illustrated in Figure 2. The Radio Set Group OZ-53/ASC-26 is illustrated in Figure 1, 3.2 First article. When specified in the contract (see 6.2.11, a sample shall be subjecte
20、d to first article inspection (see 4.4 and 6.3). 3.3 Parts and materials. 3.3.1 General. Parts and materials shall meet the requirements of MIL-STD-454Jl63remen t 22. 3.3.1.1 Nonstandard parts. Standard MS and AN parts shall be used unless the parts will not perform as required in the intended appli
21、cations and environments specified herein, When no standard part is available, a nonstandard part may be used with prior approval of the procuring activity. Selection and approval of the use of nonstandard parts and materials shall be obtained by the contractor as specified in MIL-STD-454, Requireme
22、nt 22. 3.3.2 Materials. 3.3.2.1 Metals. Metals shall be of the corrosion resistant type unless protected to resist corrosion during the life of the ASC-26. a 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a MIL-C-85642 58 7779706 0375862 1 MI L-C-
23、85642 (AS ) FIGURE 1. Radio Set Group OZ-53/ASC-26 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-85642 58 O6 01758b3 3 O 74 O O POWER CABLE w5 ICs CABLE W6 VHF ANTENNACABLES w7, wO UHF ANTENNACABLE w9 ANTENNA COUPLER VHF ANTENNAS E2, E3 UHF A
24、NTENNA El HEADSET, CABLE, AND BRACKET FIGUR? 2. Interconnecting Group ON-252/ASC-26 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-85642 58 = 0b 0375864 5 m 3,3.2.2 Non-ferrous materials. Non-ferrous materials shall be used for a73 parts of
25、the ASC-26 except where ferrous materials are considered essential by the con trac tors and au thori zed by the procuring ac ti vi ty ( see 6.2.1). 3.3.2.3 Dissimilar metals. Unless protected against electrolytic corro- sion by means of a protectswe coating, intimate contact of dissimilar metals, wh
26、ich are specified in Requirement 16 of MIL-STD-454 shall be avoided. 3.3.2.4 Protective treatment. When materials which are used in the construction of the ASC-26 are subject to deterioration when exposed to climatic and environmental conditions likely to occur during service life, they shall be pro
27、tected against such deterioration in a manner that will in no way prevent compliance wi th the performance requirements of this specifica- tion. The use of any protective coating that will crack, chip, or scale with age or extremes of cl imatic and environmental conditions shall be avoided. 3.3.2.5
28、Fungus-proof-material s. Materials that are nutrients for fungi shall not be used unless hermetically sealed, or treated with fungicidal agent accep tab1 e to the Government Inspec tor. 3.3.2.6 Toxic and corrosive fumes. The materials, as installed in the ASC-26 and under the condi ti ons specified
29、herein, shall not 1 i berate deleterious or corrosive fumes. This shall include any fungicidal agents that are used. 3.3.2.7 Aluminum alloy parts. Aluminum alloy parts shall be covered with Parts which do not anodize as required an anodic film in accordance wi th MIL-A-8625, except that dials, small
30、 holes, chassis inserts, need not be anodized. may be coated in accordance with MIL-C-5541. O 3.3.2.8 Components. The electronic and mechanical components shall be in accordance with MIL-STD-454, Requirement 22. 3.3.2.9 Threads. The threads of all machine screws shall be in acc or da n c e w i thS -
31、 7 7 4 2. 3.4 Design and construction. The ASC-26 shall conform with the requirements of Drawing 106IASlO 0-1 concerning design, cons truc ti on, and workmanship. The design shall include minimum size and weight consistent with maximum reliability, operability, and minimum maintainability. In any ca
32、se, it is a condition of final acceptance that the ASC-26s manufactured shall meet al 1 the requi remen ts of thi s speci fica ti on. 3.4.1 Reliability. The contractor shall establish a reliability assurance test program in accordance with MIL-STD-781. 3.4.1.1 Operational stability. The ASC-26 shall
33、 operate as required Dur continuously, or intermittently, for a period of at least 500 hours. this time, it shall not be necessary to readjust any controls that are inaccessible to the operator during normal use. 3.4.1.2 Operating life. The ASC-26 shall have a minimum total opera life of 15 years wi
34、th minimal servicing and replacement of parts. i ng 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-85642 58 W 9999906 OL758b5 7 3.4.1.3 Reliability in mean-time-between-failures (MTBF) . The ASC-26 shall have a specified mean (operating) tim
35、e between failures of 400 hours when tested in accordance with 4.5.4. Failures of Government Furnished Equipment will not be counted as ASC-26 equipment failures. 3.4.2 Interchangeability. Interchangeability shall exist between all units and replaceable assemblies, subassemblies, and parts for all e
36、quipment del i vered on the con tract in accordance wi th MIL-STD-454, Requirement 7. Al 1 parts having the same manufacturers part number shall be directly and completely interchangeable with each other with respect to installation and performance. Changes in manufacturers part numbers shall be gov
37、erned by the drawing number requirements of DOO-O-lOOO/l. 3.4.3 Maintainability. The ASC-26 shall be maintained at organizational level by rep1 acement of SRAs and WRAs. Piece part repair of the faul t.y SRAs and WRAs shall be performed at the intermediate level maintenance shops. than the following
38、: a. and three hours for the remaining 10 percent. b. three hours for the remaining 10 percent. 3.4.3.1 Repair time. Repair time for the ASC-26 shall be not greater Organizational level - 30 minutes for 90 percent of the failures Intermediate level - 45 minutes for 90 percent of the failures and The
39、 repair time is based on the use of one organization or intermediate level (as appropriate) technician and technical information. facilities will be available. Repair time shall include all repair and test time. Spare parts and 3.4.4 Transportability. The ASC-26 shall be transportable by air, rail,
40、truck, or ship when packaged as specified in section 5. 3.4.5 Dimensions. The dimensions of the ASC-26 shall be not greater than the following: a. Radio Set Group (1) Height 28 inches (2) Width 15 inches (3) Length 34 inches 3.4.6 Weight, The total weight of the ASC-26 shall be not greater than 3.4.
41、7 Color and finish. The color and finish of the equipment shall be 165 pounds. in accordance with Drawing 10CIAS100-1. 3.4.8 Nameplate and identification marking. Serial number assignment, namepl a te approval , and i den ti fica tion marki ng s ha1 1 be in accordance wi th MIL-N-18307 and s ha1 1 i
42、 ncl ude the f o1 1 owing : 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-856LI2 5 7779706 CIL75866 7 m MIL-C-85642 (AS) a. Unit name b. Unit nomenclature c. Contract number d. Manufacturers code number e. Equipment drawing number f. Procur
43、ing activity g. Serial number 3.4.8.1 Decals, nameplates, and marking. All decals, nameplates, and marking shall be affixed to th e ASC -26 in accordance with MIL-STD-130 and all referenced marking specifications and drawings therein. activity for ASC-26s under contract or order. sequentially ali AS
44、C-26s which are delivered under the contract. MIL-STD-454-i rement 1. 3.4.8.2 Serial numbers. Serial numbers will be assigned by the procuring The contractor shall serialize 3.4.9 Safety. Safety requirements shall be in accordance with 3.4.9.1 Human performance/human engineering. The ANIASC-26 and a
45、ll component part thereot, shall be designed in accordance with the requirements of MIL-STD-1472. Recognized principles of human engineering as specified .in MIL-H-46855 shall be followed during design. 3.4.10 Government furnished equipment (GFE). The following assemblies will be Government furnishe
46、d to the contractor for assembling in the AN/ASC-26 ( see 6.4 : a. UHF Transceiver, AN/ARC-l59(V)l b. VHF Transceiver, RT-1299(V)Z/ARC-l86(V) (2 units) e. Headset H-l57/AIC (4 units) d. e. UHF Antenna AT-256A/ARC f. VHF Antenna Coupler CU-942 (2 uni ts) g. Control Cornunications C-6533/ARC (4 units)
47、 3.4.11 Standard conditions. The fol lowing condi tions shall establish normal performance characteristics under standard cond maki ng 1 abora tory bench tes t. VHF Antenna AS1703/AR (2 units) 9 be used t tions and for Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
48、nse from IHS-,-,-MIL-C-85642 58 M 77799b O375867 O II a, Tempera ture b, Altitude c. Vibration d. Humidity (Relative) e. Input Power MIL-C-85642 (AS) 25 f 10C Normal ground None Uncon troll ed room ambient 28 f 1.0 vol t DC, 35 amperes 3.4.12 Service conditions. The ASC-26 shall operate as required
49、under 4.5 amperes; 10 watts. Technical manuals 523-0770254-001118, vol urne 1, 523-0770255-101118, vol urne 2, 523-0771532-00111A, volume 3, and 523-0770257-002118, volume 4 contain debil description, operation, and maintenance requirements for the transceiver. 3.6.1.2.3 UHF Transceiver AN/ARC-l59(V)l. The UHF transceiver will be furnished by the Government to the contractor (GF
