1、MIL-A-27518 59 W 9799906 0054378 O W MIL-A-29518( EC) 29 January 1988 M IL I TARY SPEC IF I CAT I ON ANTENNA GROUP, OE-418( V) /SRC 10-MHz TO 30-MHz TRANSMITTING TWIN WHIP This specification is approved for use by the Space and Naval Warfare Systems Command, Department of the Navy, and is available
2、for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the design, development, performance, and test requirements for the Antenna Group, OE-418(V)/SRC, hereinafter referred to as the antenna group. 5.5-meter (m) (18-foot (ft) twin-whip co
3、nfiguration with matching network enclosure. The antenna group can be impedance matched to provide broadband frequency coverage in the 10-megahertz (MHz) to 30-MHz range for high frequency (HF) shipboard transmitting systems. The antenna group is a nominal 2. APPLICABLE DOCUMENTS 2.1. Government doc
4、uments. . 2,l.l Specifications and standards. The following specifications and standards form a part of this specification to the extent specified herein. Un1 ess otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specification
5、s and Standards (DoDISS) and supplement thereto, cited in the solicitation. 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, Wa
6、shington, OC 20363-5100, by using the self-addressed Standardization Document Improvement Proposal (OD Form 1426) appearing at the end of this document, or by letter. AMSC N/A FSC 5985 DISTRIBUTION STATEMENT A. Approved for pub1 ic re1 ease; distribution is un1 imi ted. “THIS DOCUMENT CONTAINS PAGES
7、. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SPEC IF I CATI DNS MILITARY M I L -s- 901 MIL-P-15024 MIL-P- 15024/5 MI L -E - 1 6 400 G MIL-E- 17555 STANDARDS MILITARY MIL-STD-108 MIL-STD-109 MI L-STD-167-1 MIL-STD-454 MIL - STD- 965 MIL -STD- 131
8、0 MIL-STD-1364 Shock Tests, H. I. (High-Impact); Shipboard Machinery, Equipment And Systems, Requirements For Plates, Tags, And Bands For Identification Of Equ i pmen t P1 ates, Identification Electronic, Interior Communication And Navigation Equipment, Naval Ship And Shore: I General Specification
9、For Electronic And Electrical Equipment, Accessories, And Provisioned Items (Repair Parts) ; Packaging Of Definitions Of And Basic Requirements For Enclosures For Electric And Electronic Equipment Qual i ty Assurance Terms And Definitions Mechanical Vi brations Of Shipboard Equipment (Type I - Envir
10、onmental And Type II - Internally Excited) Standard General Requirements For Electronic Equipment Parts Control Program Shipboard Bonding, Grounding, And Other Techniques For Electromagnetic Compatibility And Safety Standard General Purpose Electronic Test Equipment 2.1 2 Government drawings, The fo
11、l 1 owing Government drawing forms a part of this specification to the extent specified herein. Unless otherwise specified, the issue shall be those in effect on the date of the solicitation. DRAWING SPACE AND NAVAL WARFARE SYSTEMS COMMAND (SPAWAR) 0330411 Installation Guidance Details, OE-( )/SRC A
12、ntenna (10-30 MHz, 18 Ft) Twin Whip 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-* MIL-A-275L 57 777770b 0054400 5 m MI L-A-29518( EC) (Copies of specifications, standards, and drawings required by contractors in connection with specific acquisi
13、tion functions should be obtained from the contracting activity or as directed by the contracting officer.) specification to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted shall be those listed in the issue of the DoDISS specified in the so
14、licitation. Unless otherwise specified, the issues of documents not listed in the DoDISS shall be the issue of the nongovernment documents which is current on the date of the sol ici tation. 2.2 Other publications. The following documents form a part of this AMERICAN NATIONAL STANDARDS INSTITUTE (AN
15、SI ) C95.2-66 Y32.16-1975 Reference Designations For Electrical And Radio Frequency Radiation Hazard Warning Symbol Electronic Parts And Equipments (Application for copies shall be addressed to the American National Standards Institute, 1430 Broadway, New York, NY 10018. ) (Nongovernment standards a
16、nd other pub1 ications are normally available from the organizations which prepare or which distribute the documents. These documents also may be available in or through libraries or other informational servi ces. 1 2.3 Order of precedence. In the event of a conflict between the text of this specifi
17、cation and the references cited herein (except for associated detail specifications, specification sheets, or MS standards), the text of this Specification shall take precedence. Nothing in this specification, however, shall supersede appl icabl e 1 aws and regulations un1 ess a specific exemption h
18、as been obtained. 3. REQU I REMENTS 3.1 General. The antenna group shall be in accordance with MIL-E-16400G to .the extent specified herein. 3.1.1 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspection (see 4.4 and 6.3). 3.1.2 Operati
19、onal requirements. The antenna group shall give reliable performance within the limits specified herein, under conditions of intermi ttent or continuous operation during exposure to adverse conditions normally encountered in Naval shipboard communication service. Mechanical and electrscal ruggedness
20、 is of paramount importance for assurance of re1 iable performance. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-29518( EC) 3,1,3 Government-furnished material (GFM). GFM, if any, including either Government-furnished information (GFI) or
21、Government-furnished equipment (GFE), shall be as specified (see 6.2 and 6.8). 3.2 Parts, materials, and processes. Parts, materials, and processes shall be ln accordance with the Parts, materials and processes paragraph of MIL-E-16400G to the extent specified herein. 3,2.1 Selec$ion of parts, mater
22、ials, and processes. Selection of parts, materials, and processes shall be in accordance with the Selection paragraph of MIL-E-16400G to the extent specified in 3.2.2 through 3.2.4.2. 3.2.2 - Parts, Parts shall be as specified in 3.2.2.1 through 3.2.2.4. 3.2.2.1 Individual selection. The performance
23、 of the antenna group shall not be dependent on the selection of individual parts, unless such selection is specifically approved by the procuring activity. only with the approval of the procuring activity. Requests for approval to use nonstandard parts shall be submitted in accordance with MIL-STO-
24、965. 3.2.2,3 Connectors, radio frequency (RF) . RF connector and mating. assembl ies shall be Electronic Industries Association flange type as specified in SPAWAR Drawing (OWG) 0330411. requirements specified in 3.6.4. Fiberglass insulators shall be treated to resist deterioration from sunlight and
25、salt spray and shall be nonhygroscopic. The antenna insu1 ator shall be a permanently assembled sing1 e 3.2,2,2 Nonstandard parts usage. Nonstandard parts shall be employed 3,2.2,4 Insulators. Insulators shall conform to the electrical . part. 3.2.3 Materials. Materials shall be as specified in 3.2.
26、3.1 through 3.2.3.4, 3.2.3.1 Selection of materials. Where metal-to-metal contact of dissimilar metals occurs, the selection of materials shall be in accordance with the Dissimilar metals paragraph of MIL-E-l6400G, for combinations of metals subject to immersion, splashing, or spray from sea water.
27、3.2.3.1.1 Attachment hardware. Attachment hardware shall be limited to the types of metal-to-metal contact specified in a through d: a. Aluminized hardware to aluminum metal b. Brass hardware to brass metal c. d. Corrosion-resistant steel -to-steel metal Brass hardware to austenitic corrosion-resist
28、ant metal, subject to the approval of the procuring activity 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-27518 57 7777706 005q402 7 M r L Indentu re I tem Quantity 1.0 Antenna group - 1.1 Antenna, 5.5-m (18-ft) whip 2 1.2 Interconnecting
29、feed assembly 1 1.4 Mating connector assembly kit 1 1.3 Matching network enclosure 1 3.2.3.2 Unacceptable materials. Materials specified in the Unacceptable materials paragraph of MIL-E-16400G shall not be employed in the antenna group. Nomencl ature OE-418(V)/SRC AS-37 73/U - CY( )/SRC - 3.2.3.3 An
30、tenna and network enclosure material s. Whip elements shall be made of spun aluminum. of aluminum. Whips and matching network enclosure shall be designed to mount on steel surfaces. The matching network enclosure (feedbox) shall be made 3.2.3.4 Magnetic materials. The antenna group shall have a mini
31、mum magnetic signature in accordance with the requirements specified in the Magnetic materials paragraph of MIL-E-16400G. 3.2.4 Processes. Processes shall be as specified in 3.2.4,l and 3.2.4.2. 3.2.4.1 Soldering. Soldering shall conform to MIL-STD-454, Requirement 5. 3.2.4.2 Welds. Structural weldi
32、ng shall conform to MIL-STD-454, 3.3 Design. Antenna group design shall be as specified in 3.3.1 through Requirement 1r 3.3.9.1. 3.3.1 Antenna group capability. When installed in the design shipboard location, the antenna group shall provide a transmitting capability in the 10-MHz to 30-MHz range, M
33、ajor components of the antenna group shall be as specified in TABLE I. 3.3.3 Internal interfaces. Internal interfaces of the antenna group shall include interconnections between the two ship antennas and the matching network enclosure and between the matching network enclosure and the transmission 1
34、 i ne cab1 e. The matching network enclosure, or feedhax, shall be located equidistant between the two whip antennas. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-29518( EC) 3.3.4 Mechanical interfaces. The antenna group shall interface wi
35、th a fixed foundation on the ship in accordance with the mounting configuration and requirements of SPAWAR DWG 0330411. 3.3.5 Protective devices. Electromagnetic pul se (EMP) protective device( s), Fischer Custom Communications Model FCC-35OA-5000A-IL-Z3/U, or equal , shall be installed in the match
36、ing network enclosure. 3.3.6 Reliability design. Reliability design shall be as specified in 3.3.6.1 and 3.3.6.2. 3,3.6.1 Oeratinq. Temperature, power, and voltage stress levels and ratios, as applicable, shall be included in all mean-time-between-failures estimates. Derating shall be in accordance
37、with MIL-STD-454, Requirement 18. 3.3.6.2 Tolerance sensitivity. The design of the antenna group shall minimize failures due to parameter change as a function of manufacturing to1 erances, envi ronmental factors, and age. The factors speci fi ed i n a through j shall be considered: a. Normal manufac
38、turing to1 erances, i ncl udi ng sol deri ng, wiring, b. Normal variations in material quality, including finish c. Variations in applied RF voltages, peak and average d. Variations in power dissipation e. Range of ambient temperatures and rate of change f. Vi brati on 1 eve1 s, steady-state and tra
39、nsient g. Humidity h. Operational aging, particularly that of dielectric materials i . Nonoperati onal aging ( storage 1 i fe 1, shipping and hand1 i ng j. Salt spray and stack gas deposits, particularly those on pl acement, and machinery to1 erances to1 erances from exposure to sun, ozone, and stac
40、k gasses effects insu1 ators 3.3.7 Maintenance design. Maintenance design shall be as specified in 3.3.7.1 through 3.3. / ,6 . 3.3.7.1 Throwaway subassemblies. The designation of subassemblies as throw-away shall be subject to approval of the procuring activity. 3.3.7.2 Repairable subassemblies. Sub
41、assembl les designated as repairable shall be designed for ease of maintenance (see 6.6). 3.3.7.3 Adjustment and alignment. Except for allowable impedance trimming adjustments, the antenna group chal 1 not require component adjustment or alignment when installed in the ship, or during maintenance or
42、 repair. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL -A- 295 18 ( EC ) 3.3.7.4 Accessibility. The matching network enclosure shall be so arranged that access to any part shall not require removal of other parts, except access covers. 3.3.7.
43、5 Access covers. Access covers shall be retained by captive fasteners. away when opened. Means shall be provided to prevent covers from falling or sliding 3.3.7.6 Test equipment. The design of the antenna group components shall be such that all maintenance and repair action may be performed using on
44、ly standard general purpose electronic test equipment (GPETE), or substitute standard GPETE, as specified in MIL-STD-1364. 3.3.8 Mechanical design. The design of the antenna group shall conform to the Rounded corners and edges and Moisture pockets paragraphs of MIL-E-16400G. 3.3.8.1 Enclosures. The
45、degree of enclosure for the feedbox shall be splashproof as specified in MIL-STD-108. 3.3.8.2 Antenna whip elements. The tops of the antenna whip elements The Antenna shall be closed to prevent the entry of water and salt spray. Assembly, AS-( )/U, as a whole, shall be splashproof as specified in MI
46、L-STD-108. 3.3.9 Safety design. The safety requirements for the antenna group shall be i n accordance with MfL-STD-454, Requirement 1. 3.3.9.1 Electric shock hazard labeling. Hazard labels shall be permanently attached to each antenna in a position readily visible to personnel in the area and shall
47、contain the following in the upper triangle: DANGER RADIO FREQUENCY SHOCK HAZARD The following statement shall appear in the lower triangle: A RADIO FREQUENCY SHOCK HAZARD MAY EXIST TO PERSONNEL CONTACTING THE ANTENNA Color and format shall conform to ANSI C95.2-66. Dimension D as specified in ANSI
48、C95.2-66, Figure 1, shall be at least 0.3185 centimeter (cm) (0.125 inch (in. 1). 3.4 Construction. Construction shall be as specified in 3.4.1 and 3.4.2. 3.4.1 EMP device installation. Specified EMP devices shall be mounted in the matching network enclosure at the antenna feed points(s1 (see 3.3.5)
49、. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-29518( EC) 3,4.2 Matching network enclosure. The matching network enclosure and al 1 electrical connections shall be resistant to an increase in generation of intermodulation products as a result of the effects of salt air and constant vibration at 0.25 g amplitude. Techniques shall be employed such as, but not limited to, silver
