1、MIL-A-2BB75 59 9999906 0054353 3 i 8-06-Cq -.“ t MIL-A-28895( EC) 15 November 1985 MILITARY SPECIFICATION ANTENNA ELEMENTS, AS-3435/BRC AND AS-3436/BRC This specification is approved for use by the Space and Naval Warfare Systems Comnand, Department of the Navy, and is available for use by all Depar
2、tments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the performance, design, manufacture, and test requ iremenf.sfor Antenna Elements, AS-3435/BRC and AS-3436/BRC, here inafter referred to as the antenna elements. 2. APPLICABLE DOCUMENTS 2.1 Government doc
3、uments. 2.1.1 Specifications and standard(s). The following specif ications and standard(s) form a part of this specification to the extent specified herein. of these documents shall be those listed in the issue of the Department of Defense Index of Spec- if ications and Standards (DoDISS) and suppl
4、ement thereto, cited in the sol citation. Unless otherwise specified, the issues SPECIFICATIONS FEDERAL PPP-S-760 Strapping, Nonmetal1 ic (And Connectors) MIL I TARY MIL-C-12000 Cable, Cord, And Wire, Electric; Packaging Of MIL -E -16400 Electronic, Interior Comnunication And Navigation Equipment, N
5、aval Ship And Shore: General Specification For STANDARDS MIL I TARY MIL-STD-109 Quality Assurance Terms And Definitions 2.1.2 Other Government drawings (DWGs) and pub1 ications. The following other Government OWGs and publications form a part of this specification to the extent specified herein. wis
6、e specified, the issues shall be those in effect on the date of the solicitation. Unless other- DRAWINGS NAVAL UNDERWATER SYSTEMS CENTER (NUSC) , New London Laboratory (NLL) NUSC/NLL 02203001 NUSC/NLL 02377001 NUSC/NLL 0238006 NUSC/NLL 02387001 Tip, Cable Terminat ion Antenna Element Assembl ies, AS
7、-3435/BRC And AS-3436/BRC (for Assembly Instruct ions For AS-3434(OV)/BRC Adapter, Kad io Frequency, MX-l0158/BRC AS-3436/BRC Only) Beneficial comnents (recomendat ions, addit ions, delet ions) and any pertinent data which may be of use in improving this document should be addressed to: Comnander, S
8、pace and Naval Warfare Systems Command (SPAWAR-8111), Washington, DC 20363-5100, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document, or by letter. FSC 5985 I DISTRIBUTION STATEMENT A. Approved for public release; distributio
9、n is unlimited. THIS DOCUMENT CONTAINS 4 - PAGES. ,- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MI L-A-28895 ( EC ) I PUBLICATIONS NUSC NUSC-C-342/4141- Cable, Radio Frequency, Buoyant, General Specification 279 (Copies of specifications, stan
10、dard(s), DWGs, and publication(s) required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Other publications. The following documents form a part of this specification to the extent spe
11、cified herein. Unlpss otherwise specified, the issues of the documents which are 000 adopted shall be those listed in the issue of the UoDISS specified in the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS shall be the issue of the nongovernment documents
12、which is current on the date of the sol citation. DWGs SPEARS ASSOCIATES, INCORPORATED (SAI) SAI Di85015 Cover, Test/Shipping SAI 0185049 Housing Assembly SAI 0205020 Termination Tip Grounded SAI E185017 Connector, Plug, Electrical (Pin Contact) Antenna Assembly SAI E185033 Connector, Plug, Electric
13、al (Socket Contact) Cable Assembly R.F. SAI E211025 Antenna Element Assembly, AS-3435/BRC SAI E211026 RF Cable Assembly, CG-3820/BRC E 1 emen t (Copies of drawings required by contractors in connection with specific acquisition functions 2.3 Order of precedence. In the event of a conflict between th
14、e text of this specification should be obtained from the contracting activity or as directed by the contracting activity.) and the references cited herein (except for associated detail specifications, specification sheets, or MS standards), the text of this specification shall take precedence. Nothi
15、ng in this specifica- tion, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 General. The antenna elements shall be in accordance with MIL-E-16400 to the extent specified herein. 3.1.1 First article. When specified in the con
16、tract or purchase order, a sample shall be subjected to first article inspection (see 4.? and 6.3). 3.1.2 Description. The antenna elements shall each consist of single conductor buoyant cable with length and terminations as specified. 3.1.2.1 Antenna Element, AS-3435/BRC. Antenna Element, AS-3435/B
17、RC shall consist of an assembly of components as shown in tIGURr 1. Tip, cable termination (grounded) SAI DWG D205020 I Cable, RF (see NOTE 1) (100 ft) (see NOTE 2) I Connector, plug, electrical (pin contact) SAI DWG E185017 Antenna Element, NOTES: 1. Radio frequency 2. Feet FIGURE 1. Components of
18、Antenna Element, AS-3435/BRC. 2 e - =-_ 7 - -_ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-28895( EC) Tip, cable termination (not grounded) NUSC/NLL DWG 02203001 O i 9 O Q Measurement points (see FIGURE 3 and FIGURE 4) DC res i st ance AS-3
19、435/BRC AS-3436/BRC (50 ft) NUSC-C-342/4141-279/1-10 A and C (continuity) B and C (insulation) NUSC/NLL DWG 02377001 Less than 0.42 ohms Less than 0.21 ohms Greater than 1000 megohms Less than 1000 megohms 1 I I Connector, plug, electrical (pin contact) SAI DWG E185017 FIGURE 2. Components of Antenn
20、a Element, AS-3436/BRC. 3.2 Characteristics. Characteristics of the antenna elements shajl be in accordance with 3.2.1 through 3.2.2.8. 3.2.1 Performance. Performance of the antenna elements shall be in accordance with 3.2.1.1 through 3.2.1.3. 3.2.1.1 Antenna Element, AS-3435/BRC. The antenna elemen
21、t shall function as an antenna radiator to receive very low frequency (VLF), low frequency (LF), medium frequency (MF), high frequency (HF), and very high frequency (VHF) comnunications. with RF Adapter, MX-l0158/BRC and RF Amp1 if ier, AM-7074/BRC of Antenna Group, AS-3434(V)/BRC. anenna element sh
22、all be mechanically compatible with deployment and retrieval through Antenna Transfer Assembl ies, AN/BRA-18( ) and AN/BRA-24( ). radiator to transmit MF and Hi- at levels up to one kilowatt (kW) and receive at MF and HF frequencies. Group, AS-3434(V)/BRC. retrieval through Antenna Transfer Assembl
23、ies, AN/BRA-18( ) and AN/BRA-24( ). elements shall conform to the continuity and insulation resistance limits specified in TABLE I. The antenna element shall interface The 3.2.1.2 Antenna Element, AS-3436/BRC. The antenna element shall function as an antenna The antenna element shall interface with
24、the RF Adapter, MX-l0158/BRC of Antenna The antenna element shall be mechanically compatible with deployment and 3.2.1.3 Direct current (DC) resistance. When tested in accordance with 4.5.1, the antenna TABLE I. Antenna element DC resistance requirements. 3.2.2 Physical characteristics. The antenna
25、elements shall be fabricated in accordance with 3.2.2.1 Flexibility. this specification and the guidance shown on SAI DWG E211025. exhibit physical damage as revealed by surface examination and pressure test, and electrical degradation as revealed by the DC resistance test. the antenna elements shal
26、l not show evidence of damage or flooding. of 4.5.10. tion, the DC resistance test, and the marking examination. When tested in accordance with 4.5.7, the antenna elements shall not 3.2.2.2 Pressure resistance. When tested under hydrostatic pressure in accordance with 4.5.2, 3.2.2.3 Durability. The
27、antenna elements shall withstand the AN/BRA-24( ) durability test The antenna elements shall not exhibit degradation as revealed by the surface examina- 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i I I I I 1 . VI MIL-A-28895 57 7979906 0054356
28、 9 I- I I I I I I l l I I I I I I I W ai VI u h W I- O z aJ aJ VI v I / 4 / . ” t W E aJ ai U - W t a c a ul c c ai a .- v) ai i n U W ” 7 13 E W ul VI ai rc) LC t c E W 7 lu c - c 7 ai a ” .- c ” L lu a L Q + L O O ” c+ .r O a ,”I c .- O ” t n wc VI E VI” aJW zu c ai L 3 lu lu c VI . wl-4 *? I- VI
29、O W L M Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-28895 59 9999906 005L1L57 O m c, c W a, 7 W r: c W c, r: m m L O cc v, c, c O Q .e v) W ci W U c ci v, v) W L U .r- m .r- a l-l O O M O Cu N O a x? O MIL-A-28895( EC) h a ci O L W a, VI v
30、n I 1 I 5 ,y a, u c ci VI VI W L u c c W E a, W a c c 01 ci a L O + ci c O ci c W E W L 3 m a W r: a .r n 7 .r n l-4 W ci O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2.2.4 Tensile strength. When tested in accordance with 4.5.9 the molded conn
31、ector plug The maximum elongation of the molded section, including the separation and the molded termination tip (with suitable test fixtures attached), shall withstand static tensile loads along the axes of the connector plug and the termination tip with no evidence of cracking or other damage. of
32、connector or termination tip (metal sections) from the buoyant cable, shall not exceed 2 percent when subjected to tensile loads as specified in 4.5.9. temperatures over the range -40“ Celsius (C) to +70“C. shall operate at a temperature of -1OC. 3.2.2.5 Temperature nonoperating. 3.2.2.6 Temperature
33、 operating. When tested in accordance with 4.5.8.2, the antenna elements 3.2.2.7 Diameter. The antenna elements shall be fabricated from buoyant cable which conforms The antenna elements shall withstand shipment and storage to NUSC-C-342/4141-2/9. The outer diameter of any point along the antenna el
34、ement, including the molded connector and termination tip, shall be 0.650 inches (in.) IO.020 in. and AS-3436/BR if not, a parallel path will be provided between points A and B resulting in an erroneous reading. 4.5.2 Pressure resistance test. The pressure resistance test shal 4.5.2.1 and 4.5.2.2. 4
35、.5.2.1 Antenna Element, AS-3435/BRC. The antenna element without installed shall be tested for watertight integrity, using the test setup accordance with a through i: be in accordance with the terminat ion tip shown in FIGURE 5, in a. Place the cover manufactured in accordance with SAI DWG 0185015 o
36、ver the connector plug (pin contact) conforming to the SAI DWG E185017 portion of the partially assembled antenna element. b. square inch (psi) as specified in TABLE III with the unterminated end of the antenna element in air at ambient pressure. by the equipment. using a megohmeter (AN/PSM-25, or e
37、qual) that applies no more than 500 V between test points. Measure between the center conductor (unterminated end of partial assembly) and the ground point on the pressure tank (see FIGURE 5). The insulation resistance readings shall be in accordance with TABLE I. d. Remove the partial antenna eleme
38、nt assembly from the pressure vessel and dry off water on surface of the cable, connector, and cover. e. Perform the surface examination in accordance with 4.5.3. f. Complete the assembly of the antenna element by installing the molded termina- tion tip, SAI OWG 0205020. (The molded termination tip
39、is not hydrostatically pressure tested after assembly.) g. Temporarily remove the cover placed over the connector plug during a. h. Perform the DC resistance test of 4.5.1 on the antenna element (see FIGURE 4). i. Reinstall the cover removed in g on connector plug for protection during ship- Subject
40、 the connector plug and cover to hydrostatic pressure of 600 pounds per The time to reach the required pressure should be the minimum permitted c. At the end of each pressure test interval, measure the insulation resistance ment (see 5.1). termination tip installed, shall be tested for watertight in
41、tegrity, using the test setup shown in FIGURE 5, in accordance with a through 1: a. Place the cover manufactured in accordance with SAI DWG 0185015 over connector plug (pin contact) conforming to the SAI DWG E185017 portion of the partially assembled antenna element. 4.5.2.2 Antenna Element, AS-3436
42、/BRC. The Antenna Element, AS-3436/BRC, without the c 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-28895 59 M 9999906 005LiLbL 2 m MI L-A-28895: EC) L L O O c 4 U U 3 3 u LU e-o c om o U.7 ?U c- t 9 Provided by IHSNot for ResaleNo reproduc
43、tion or networking permitted without license from IHS-,-,-MIL-A-28895( EC) b. Subject the connector plug and cover to a hydrostatic pressure of 600 psi as specified in TABLE III with the unterminated end of the antenna element in air at ambient pressure. The time to reach the required pressure shoul
44、d be the minimum permitted by the equipment. c. At the end of each pressure test interval, measure the insulation resistance using a megohmeter (AN/PSM-25, or equal) that applies no more than 500 V between test points. Measure between the center conductor (unterminated end of the partial assembly) a
45、nd the ground point on the pressure tank (see FIGURE 5). The insulation resistance shall be in accordance with TABLE I. water on the surface of the cable, connector, and cover. tion tip conforming to NUSC/NLL OWG 02203001. Subject the termination tip to a hydrostatic pressure of 600 psi, as specifie
46、d in TABLE III, with the connector plug end of the antenna element in air at ambient pressure. required pressure should be the minimum permitted by the equipment. reached the required pressure), measure the insu1 at ion resistance using a megohmeter (AN/PSM-25, or equal) that applies no mre than 500
47、 V between test points. tor of connector plug (pin contact) and the ground point on the pressure vessel (see FIGURE 5). The insulation resistance shall be in accordance with TABLE I. surface of the cable and termination tip. d. Remove the partial antenna element assembly from the pressure vessel and
48、 dry off e. Perform the surface examination in accordance with 4.5.3. f. g. Complete the assembly of the antenna element by installing the molded termina- Place the termination tip end of the antenna element in the pressure vessel. The time to reach the h. Temporarily remove the cover placed over th
49、e connector plug during a. i. Initially, and at twenty minutes thereafter (or when the pressure vessel has Measure between the center conduc- j. Remove the termination tip from the pressure vessel and dry off the water on the k. Perform the surface examination in accordance with 4.5.3. 1. Reinstall the cover removed in h on the connector plug for protection during shipment (see 5.1). TABLE III. Pressure resistance t
