1、 - MIL-A-27521 57 m 7777906 0370669 7 m Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Space and Naval Warfare Systems Command, SPAWAR 003-121, Washington, DC 20363-5100, by using th
2、e self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document, OP by letter. (1 MIL-A-29521(EC) 25 April 1988 i MILITARY SPECIFICATION This specification is approved for use by the Space and Naval Warfare Systems Command, Department of the Navy,
3、and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the performance, design, manufacture, test, and acceptance requirements for the Antenna Group, AN/BRA-34( VI, AN/BRA-34A(V), and AN/BRA-34B(V), hereinafter referred to
4、 as the antenna group. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The fol lowing specifications, standards, and handbook form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents
5、shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation. SPECIFICATIONS MIL ITARY DISTRIBUTION STATEMENT A. Approved for public release; distribution is un1 imi ted. Provided by IHSNot for Resale
6、No reproduction or networking permitted without license from IHS-,-,-MIL-E-17555 M IL-F- 19207 MIL-E-22200 M I L - C- 23020 MIL-C-24217 MIL-C-24231 MIL-P-55110 STANDARDS MILITARY MIL-STD-12 MIL-STD-22 MIL-STD-108 MIL-STD- 109 MIL-STD-129 MIL-STD-167- 1 MIL-STD-248 MIL -STD-271 MIL-STD-275 MIL-STD-27
7、8 MIL-STD-454 MI L-STD-461 MIL-STD-462 and Interim Notice 5 MIL-STD-471 El ectroni c And El ectrical Equi pment, Accessories, And Provisioned Items (Repair Parts) : Packaging Of Fusehol ders, Extractor Post Type, Blown Fuse Indicating And Nonindicating, General Specification For El ec trodes , We7 d
8、i ng , Covered; General Specification For Cable, Coaxial (For Submarine Use) Connectors, Electrical , Deep Submergence, Submarine Connector, Plugs, Receptacles, Adapters, Hull Inserts, And Hull Insert Plugs, Pressure-Proof, General Specification For Printed Wiring Boards, General Specification For A
9、bbreviations For Use On Drawings, And In Specifications, Standards, And Technical Documents Welded Joint Design Definitions Of And Basic Requirements For Enclosures For Electric And Electronic Equipment Quality Assurance Terms And Definitions Marking For Shipment And Storage Mechanical Vibrations Of
10、 Shipboard Equipment (Type I - Environmental And Type II - Internal ly Excited 1 Welding And Brazing Procedure And Performance Qualification, Requirements For Nondestructive Testing Methods Printed Mi ring For Electronic Equipment Welding And Casting Standard Standard General Requirements For Electr
11、onic Equipment Electromagnetic Emission And Suscepti bi 1 i ty Requirements For The Control Of El ectromagnetic Interference El ec tromagnetic .Interference Characteri sti c s , Measurement Of Maintainabil ity Verification/Demonstration/ Eva1 uati on 2 Provided by IHSNot for ResaleNo reproduction or
12、 networking permitted without license from IHS-,-,-MIL-A-27523 59 77977Ob O370673 5 M MIL-A-29521( EC) MIL-STD-781 MIL-STD-810 MIL-STD-965 DoD-STD-1399, MIL-STD-1472 Section 300 DoD-STD-1686 DoD-STD-2000-4 MIL-STD-2164 HANDBOOK MILITARY . MIL-HDBK-781 Re1 i abi 1 i ty Testing For Engi neeri ng Devel
13、opment, Qualification, And Production Envi ronmental Test Methods And Engineering Gui del i nes Parts Control Program Interface Standard For Shipboard Systems, Electric Power, Al ternating Current (Metric) Human Engineering Design Cri teria For Military Systems, Equipment And Facilities Electrostati
14、c Discharge Control Program For Protection Of Electrical And Electronic Parts, Assemblies And Equipment (Excluding Electrically Initiated Explosive Devices) ( Metri c 1 General Purpose Sol deri ng Requi rements For Electrical And Electronic Equipment Envi ronmental Stress Screening Process For Elect
15、ronic Equipment Re1 i abil i ty Test Methods, P1 ans, And Environments For Engineering Devel opment, Qualification, And Production 2.1,2 Other Government drawings and publications. The following other Government drawings and publications form a part of this specification to the extent specified here
16、in. those in effect on the date of the solicitation. Unless otherwise specified, the issues shall be DRAWINGS NAVAL SEA SYSTEMS COMMAND NAVSEA) 28617 A,B 5489441 SS-128-2477254 Fiberglass Mast Specifications, Submarine SS-171-4398596 Antenna Group AN/BRA-34A And AN/BRA-34B Antenna Group AN/BRA-34( V
17、) 2, AN/BRA-34A( V) 2, And AN/BRA-34B(V)2 Drawing List Antenna AN/BRA-34 Radome Manufacturing Detai 1 s 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-29521 59 m 9999906 0370b72 7 m MIL-A-29521 (EC) NAVAL UNDERWATER SYSTEMS CENTER, NEW LONDO
18、N LABORATORY (NUSC/NLL ) 03428001 Global Positioning System (GPS) VLF/LF Antenna Modification Assembly PUBLICATIONS ASSISTANT SECRETARY OF THE NAVY (SHIPBUILDING AND LOGISTICS) NAVMAT P 4855-1 Naval Power Supply Re1 iabil ity, Design And Manufacturing Guide1 ines NAVSEA 0900-LP-023-8071 0900-LP-074-
19、4010 TRIDENT CCS Specification TE-000-AB-GTP-010 Parts Applications And Reliability Procedures For Painting Fiberglass Radomes And Camouflage Painting Of Submarine Fi berg1 ass Fai red Masts Information For Navy Electronic Equipment NAVAL SHIP SYSTEMS ENGINEERING STATION (NAVSSES) 062-029 . Critical
20、 Item Product Fabrication For Code Ident 25685 Cab1 e, Special Purpose, Electrical Submarine Antenna Systems SPACE AND NAVAL WARFARE SYSTEMS COMMAND ( SPAWAR EE110-KV-OMI-010/ W110-BRA-34 FOMM Technical Manual Support Vol ume For Antenna Group AN/BRA-34( V) , AN/BRA-34A( V) , AN/BRA-34B( V) (Copies
21、of specifications, standards, handbooks, drawings, and pub1 ications required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) specification to the extent specified herein. issues of the docu
22、mehts which are DoD adopted shall be those listed in the issue of the DoDISS specified in the solicitation. of documents not listed in the DoDISS shall be the issue of the nongovernment documents which is current on the date of the solicitation. 2.2 Other publications. The following document forms a
23、 part of this Unless otherwise specifiied, the Unless otherwise specified, the issues 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-29521 59 7999906 0370b73 9 m NATIONAL FIRE PROTECTION ASSOCIATION (IJFPA) NFPA 70-1988 National Electrical C
24、ode (Application for copies should be addressed to the National Fire Protection (Nongovernment standards and other pub1 ications are normally avai 1 ab1 e from the Association, 470 Atlantic Avenue, Boston, MA 02210.) organizations which prepare or which distribute the documents. These documents also
25、 may be available in or through libraries or other informational services.) In the event of a conflict between the text of this specification and the references cited herein (except for associated detail specifications, specification sheets, or MS standards), the text of this speclfication shall tak
26、e precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtai ned. 2.3 Order of precedence. 3. REQUIREMENTS 3.1 General. The antenna group shall conform to the requirements of MIL-E-164mthe extent specified herein. AN
27、/BRA-34B(V) are mu1 tifunction antenna groups that provide signals to communication and navigation systems and support very low frequency (VLF), low frequency (LF), medium frequency (MF), high frequency (HF), u1 tra high frequency (UHF) 1 i ne-of -si ght (LOS), Navy navi gat1 on satel 1 i te ( NAVSA
28、T) , UHF satel 1 i te communications (SATCOM), identification, friend or foe (IFF), and global positioning system (GPS) (aN/BRA-34( V)2, AN/BRA-34A( V) 2, and AN/BRA-34B(V)2 configurations only) submarine communications and navigation requirements. The antenna group shall consist of an antenna contr
29、ol unit in the radio room and an interconnecting junction box, a hull-penetration (see 6.4.5) connector for electrical connections, a special purpose electrical cable, and a mast antenna. There are six configurations of the antenna group : AN/BRA-34( V) 1, AN/BRA-34A( V) 1, AN/BRA-34B( V)l, AN/BRA-3
30、4( V)2, AN/BRA-34A(V)2, and AN/BRA-34B( V)2. Incorporation of software, firmware, or microprocessors in the antenna group shall not be permi tted. sample shall be subjected to first article inspection (see 4.3 and 6.3). The AN/BRA-34( VI, AN/BRA-34A(V), and 3.1.1 First article. When specified in the
31、 contract or purchase order, a 3.1.2 Antenna group description. The antenna group shall consist of the equipment shown in FIGU RE 1. The antenna group relationship of units shown in FGURE 2 is typical and is provided for reFerence only. Antenna group drawings, NAVSEA microfilm reel 28617A and reel 2
32、86178, and NUSC drawing (DWG) 03428001 shall be used for general guidance, unless specifically referenced. 3.2 Details of units or parts. Detailed requirements shall be as specified in 3.2.1 through 3.2.8. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH
33、S-,-,- L CI I U a f 4 m . _I -._ MIL-A-27521 59 m 7997706 0370674 O m MIL-A-29521 ( EC ) .- - 5 v I o U a m z 4 . I- 3: W x E 3 O W t 2 5. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FAIRING (SEE NOTE 3) MIL-A-27521 57 797770b O370675 2 a MIL-A
34、-29521 ( EC ) YECIAL PURPOSE ELiCll3ICAL ANTENNA NOTES: 1. AN/BRA-34 and AN/BRA-34A port installation shown. Starboard installation has Unit 1 on starboard side of sail and has starboard junction box, Unit 5. AN/BRA-34B is as shown except GPS/IFF output is from junction box - not control unit. Not p
35、art of Antenna Group, 2. 3. AN/BRA-34 (V) . /I FIGURE 2. Antenna group, relationship of units. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-._ MIL-A-29521 57 W 9999906 0370b7b 4 W HI L-A-29521( EC ) CPS MENNA PRESSUR E TRANSDUCER VLF ANTENNA IA7
36、 UHF/HE LIX FIGURE 3. Unit 1, antenna assembly-radome. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-29521 5?7 W 9?77?7?70b 0370b77 b m MIL-A-29521( EC) 3.2.1 Antenna assembly-radome (Unit i). The antenna assembly-radome shall be as specifi
37、ed in 3.2.1.1 through 3.2.1.10 and as shown in FIGURE 3. 3.2.1.1 Functional capability. The basic design concept of the antenna assembly-radome is that of an epoxy-bonded fiberglass shell which houses and seals within it-the antenna sections that perform the functions specified in a through g: a. MF
38、 and HF transceive (2 megahertz (MHz) to 30 MHz) b. UHF LOS t.ransceive (225 MHz to 400 MHz) c, VLF and LF receive (10 kilohertz (kHz) to 170 kHz) d. NAVSAT receive (149.988 MHz and 399.963 MHz) e. UHF SATCOM transceive (240 MHz to 320 MHz) f. IFF transceive (950 MHz to 1158 MHz) g. GPS receive (122
39、7 MHz - +10 MHz and 1575 MHz - +10 MHz) 3.2.1,2 Simultaneous operation. All antenna sections contained within a radome shall conform to all specification performance requirements when operated individually and in any combination with any or all other sections contained within the radome. Sections sh
40、all operate without time limit and at maximum specification limits without impairing the performance of any otber section. No section shall incur damage when operated in a receive or transmit mode due to the operation of another section operated in a transmit or receive mode, except that VLF recepti
41、on during MF and HF transmission shall not be required. a helical conductor-wound within a pregrooved plastic form, on which a metallic capacitive top load is mounted. device comprising a metallic shorting tube with shorting brushes at each end to complete the circuit between the helix and top load.
42、 3.2.1.3 MF and HF anteha (Unit 1Al). The MF and HF antenna shall consist of Inside the helix and top load shall be a shorting 3.2.1.4 UHF dipole antenna (Unit 1A2). The UHF dipole antenna shall be a vertical dioole to be used for UHI. LOS transmission and receDtion. NAVSAT reception, and UHF SATCOM
43、 low-angle transmission and receptibn. 3.2.1.5 UHF helix antenna (Unit 1A3). The UHF helix antenna shall be a quadrafilar helix for reception and transmission of SATCOM signals in an overhead (high-angle) mode. The UHF helix antenna shall be compatible with a UHF SATCOM transceiver operating in a si
44、mplex mode. 3,2.1.6 Duplex filter (Unit 1A4). The duplex filter shall combine or separate the MF and HF? frequency band and the UHF and IFF-GPS frequency bands. 3.2.1.7 Mode switch (Unit 1A5). The mode switch shall provide the capability to disconnect all antennas except the MF and HF antenna for im
45、proved MF and HF transmission performance. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-l_l -_-I_ MIL-A-29521 57 W 797770b 0370b78 8 W MIL-A-29521( EC) 3.2.1.8 GPS antenna, IFF antenna, and depth transducer assembly (Unit 1A6). The GPS antenna,
46、IFF antenna, and depth transducer assembly shall perform the functions specified in a through c: GPS sate1 1 i te signal. antenna to be used for IFF transmission and reception. output representing depth of the antenna below the water surface. a. GPS antenna. The GPS antenna shall be used for recepti
47、on of the b. IFF antenna. The IFF antenna shall be a modified conical c. Depth transducer. The depth-transducer shall provide a voltage 3.2.1.9 VLF antenna (Unit 1A7). The VLF loop antenna system shall provide radio reception service aboard submarines in the frequency range from 10 kHz to 170 kHz. T
48、he antenna shall operate with Coupler, CU-1441( )/BRR or CU-2364/BRR. , 3.2.1.10 UHF switch deck (Unit 1A8). The UHF switch deck shall separate or combine UHF and Il-t signals, amplify and filter VHF and UHF received signals, and provide relay selection of UHF dipole antenna or UHF helix antenna. 3.
49、2.2 Antenna control unit (Unit 2). The antenna control unit is located in the radio room and shall house the power supply, reflectometer, and various control and indicating circuits necessary for remote operation of the various sections of the antenna. 3.2.3 Hu1 1 -penetratioti connector (Unit 3). The hull-penetration connector shall consist of an insert assembly with a
