1、AMSC N/A FSC 5985MIL-DTL-18793B 18 August 2011 SUPERSEDING MIL-DTL-18793A 5 April 2006 DETAIL SPECIFICATION ANTENNA AS-333/AP This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification establishes the requirements for a
2、ntenna type AS-333/AP which is a single slot, flush mounted, broadband airborne antenna for use over the frequency range of 420 MHz to 460 MHz. 1.2 Classification. The equipment covered by this specification is of one type and consists of the following: Major unit Type designation Size (inches) Maxi
3、mum allowable or part number weight (pounds) Antenna AS-333/AP 13 x 4 x 2.75 1.5 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or
4、 recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed.
5、2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEP
6、ARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-17 - Cables, Radio Frequency, Flexible and Semirigid, General Specification for. MIL-T-152 - Treatment, Moisture- and Fungus-Resistant, of Communications, Electronic, and Associated Electrical Equipment (Inactive for new design). MIL-E-5400 - Electronic Equi
7、pment, Aerospace, General Specifications for (Inactive for new design). MIL-D-18300 - Design Examinations, Engineering Avionic Systems/Equipment, General Specification for. MIL-DTL-18307 - Nomenclature and Identification for Aeronautical Systems Including Joint Electronics Type Designated Systems an
8、d Associated Support Systems. MIL-PRF-39012 - Connectors, Coaxial, Radio Frequency, General Specification for. INCH-POUND Comments, suggestions or questions on this document should be addressed to DLA Land and Maritime, ATTN: VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to TubesAmp
9、sdla.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil Inactive for new design after 2 February 2001. Provided by IHSNot for ResaleNo reproduction or networking permitted without l
10、icense from IHS-,-,-MIL-DTL-18793B 2 DEPARTMENT OF DEFENSE STANDARDS MIL-STD-810 - Environmental Engineering Considerations and Laboratory Tests. (Copies of the above specifications, standards, and handbooks are available at https:/assist.daps.dla.mil/ or from Standardization Document Order Desk, Bu
11、ilding 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these
12、 documents are those cited in the solicitation or contract. NAVAL AIR SYSTEMS COMMAND E-1529 - Antenna AS-333/AP, Assembly and Detail Drawing. E-1530 - Antenna AS-333/AP, Case. 49A1H2 - Antenna AS-333/AP, Component Details. (Copies of these documents are available from Commander, Naval Air Systems C
13、ommand, Code 4.1.4, Highway 547, Lakehurst, NJ 08733-5100 or by email at michael.sikoranavy.mil.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the sol
14、icitation or contract. IPC (Association Connecting Electronics Industries) J-STD-004 - Soldering Fluxes, Requirements for. J-STD-005 - Soldering Pastes, Requirements for. J-STD-006 - Electronic Grade Solder Alloys and Fluxed and Non-Fluxed Solid Solders for Electronic Soldering Applications, Require
15、ments for. (Applications for copies should be addressed to IPC - Association Connecting Electronics Industries, 2215 Sanders Road, Northbrook IL 60062-6135 or at http:/www.ipc.org.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text
16、 of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Parts and materials. In the selection of parts and materials
17、, fulfillment of major design objectives shall be the prime consideration. In so doing, the following factors shall govern: a. Parts and materials approved to specifications listed in MIL-E-5400 shall be given first consideration. b. If the contractors can demonstrate that the use of standard AN or
18、JAN parts or materials will not fulfill the design objectives because of size, weight, performance, or other reasons, material and parts shall be used which most nearly meet or exceed the performance requirements of the respective standard specification, provided that no deterioration of size, weigh
19、t, performance, or reliability will result in the use of such substitutions. c. In all cases, the meeting of general material requirements such as non-inflammability, fungus resistance, or non-toxicity and the meeting of environmental conditions as required by MIL-E-5400 or MIL-STD-810 must be of pr
20、ime consideration. d. Pure tin requirements shall be as specified in 3.2.12. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-18793B 3 3.1.1 Non-standard part approval and material approval. All non-standard parts or materials (parts or materi
21、als which do not comply with MIL-E-5400) of an electrical nature or methods of manufacture therefore and techniques and procedures involving their use and application shall be submitted to the Naval Air Systems Command (see 2.2.2) for approval as required by MIL-E-5400. 3.1.2 Design objectives. Mini
22、mum weight, simplicity of operation and an improvement in the performance and reliability of the specific functions beyond the requirements of this specification are objectives in the design of the equipment specified herein. In accordance with 3.1, the material, parts, mechanical assemblies, and ma
23、nufacturing processes shall be in accordance with the requirements of MIL-E-5400; however the use of other materials, parts and processes shall be investigated and if it appears that a substantial reduction in weight or improvement in simplicity or performance can be realized by their use, a request
24、 for approval of a non-standard part shall be submitted to the Naval Air Systems Command (see 2.2.2) for consideration. Each request shall be accompanied by complete supporting information. 3.1.3 Soldering. Unless otherwise specified, only non-corrosive core solder in accordance with J-STD-004, J-ST
25、D-005 and J-STD-006, class A, shall be used (see 3.2.12 and 6.7). Cleaning flux, such as sal ammoniac, shall not be used. Alcohol may be used for cleaning after tinning and soldering (see 3.2.12 and 6.7). Mechanical loads shall not be imposed on soldered connections. 3.1.4 Dielectric material. The d
26、ielectric material or materials used on the antenna shall be chosen so that the antenna will best fulfill the requirements of this specification. The fiberglass used in the construction of the antennas shall be made of Corning Glass Works type ECC-11-162 (or finer mesh) glass cloth, or equivalent, a
27、nd shall be impregnated with Bakelite Corporation type BRS-16631 resin, or equivalent. 3.2 General design requirements. 3.2.1 General. The antennas shall be designed to meet the requirements of MIL-E-5400 except that in case of conflict between the requirements of MIL-E-5400 and the requirements of
28、this specification, the requirements of this specification shall apply. 3.2.2 Construction. The antenna shall have the dimensions and general features of construction shown on Naval Air Systems Command Drawings E-1529, E-1530, and 49A1H2 (see 2.2.2). 3.2.3 Interchangeability. The antenna shall be so
29、 constructed that units of the same type with different serial numbers or manufactured by different manufacturers will be physically and electrically interchangeable. Interchangeability shall be measured against a model or drawings as specified by the acquiring agency for that purpose. 3.2.4 Tropica
30、lization. The antenna shall insofar as practicable be fungus proofed by selection of parts and materials non-nutrient for fungus or the parts and materials shall be treated prior to their use in the antenna so that over all spraying of the equipment is not necessary. Overall spraying of the equipmen
31、t in accordance with MIL-T-152 shall be made in the event selection of parts and materials described above is not practicable. 3.2.5 RF connectors. The radio frequency (RF) connectors included as a part of the antenna assembly covered by this specification shall be UG-58/U, or equivalent, and shall
32、be in accordance with MIL-PRF-39012. 3.2.6 RF cable. The RF cable included as a part of the antenna assembly covered by this specification shall be RG-58/U and shall be in accordance with MIL-DTL-17. 3.2.7 Impregnated fiberglass. The fiberglass used in the construction of the antennas shall be made
33、of Corning Glass Works ECC-11-162 (or finer mesh) glass cloth, or equivalent, and shall be impregnated with Bakelite Corporation type BRS-16631 resin, or equivalent. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-18793B 4 3.2.8 Mating surfac
34、es. When the UG-58/U, or equivalent, connector is mounted on the antenna, the mating surfaces shall be clean metal surfaces, free from all anodizing, grease, paint, lacquer or similar high resistance film, so as to insure negligible radio frequency impedance between the connector and the antenna sle
35、eve. 3.2.9 Weight. The antennas shall be of the lightest practicable weight consistent with the other requirements of this specification and in no event shall the installed weight of the antennas exceed 1.5 pounds. Installed weight shall include the complete antenna assembly with nameplate and recep
36、tacle, but shall not include cabling external to the antenna, plugs, mounting nuts or bolts, or any mounting bracket or fastening device which is not an integral part of the antenna assembly. 3.2.10 Identification of product. 3.2.10.1 Nameplates and nomenclature. Nameplate and nomenclature approval
37、and assignment shall be granted by the Naval Air Systems Command only upon compliance with the applicable requirements of MIL-DTL-18307. 3.2.10.2 Use on AN or MIL designations. AN or MIL designations shall not be applied to a product except for preproduction test samples, nor referred to in correspo
38、ndence, sales matter or otherwise, until notification has been received from the Naval Air Systems Command that the product has been approved. When the antenna is acquired by a prime contractor through subcontract, purchase order, or otherwise (not including Government furnished) the prime contracto
39、r shall be responsible for compliance with the requirements of 3.2.3 and approval, when granted, will extend only to that one antenna source or to that one prime antenna contract. 3.2.11 Performance. The antenna shall be so designed that when mounted in the center of a large horizontal ground plane,
40、 it shall provide vertically polarized radiation of essentially uniform intensity over 360 degrees of azimuth. The antenna shall satisfy the verification requirements which are outlined in section 4 when subjected to the following tests: 3.2.11.1 Radiation test. Radiation test shall be in accordance
41、 with 4.5.3 and shall satisfy the delta limit criteria of 4.5.3. 3.2.11.2 Resistance test. Resistance test shall be in accordance with 4.5.2. 3.2.11.3 Voltage standing wave ratio (VSWR) test. VSWR test shall be in accordance with 4.5.4 and shall pass the delta criteria of 4.5.4. 3.2.12 Pure tin. The
42、 use of pure tin as an underplate or final finish is prohibited both internally and externally. The content of the antenna components and solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.8). 3.3 Recycled, recovered, or environmentally
43、 preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.4 Workmanship. All d
44、etails of workmanship shall be in accordance with the best manufacturing practice for high-quality electronic equipment. Particular attention shall be given to neatness and thoroughness in the making of parts, plating, soldering, and finishing. 4. VERIFICATION 4.1 Classification of inspection. The i
45、nspection and testing of antennas shall be classified as follows: a. Contractor tests (see 4.2) b. Preproduction tests (see 4.3) c. Inspection tests (see 4.4) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-18793B 5 4.2 Contractor tests The c
46、ontractor tests shall be performed by the supplier, after award of contract and prior to production, at a location acceptable to the Government. One or more sample antennas shall be necessary to determine that the design of the antennas as proposed by the contractor will meet the requirements of thi
47、s specification. Contractor tests shall be conducted in accordance with the approved preproduction test procedure. Contractors not having laboratory facilities to satisfactorily conduct all tests shall either obtain the services of a commercial testing laboratory or receive written approval from the
48、 acquiring activity to omit that portion of the tests (see 6.6). 4.3 Preproduction test. 4.3.1 Sampling instructions. Preproduction test samples consist of three antennas representative of the production antennas to be supplied under the contract. Preproduction tests shall be conducted at laboratory
49、 designated by the acquiring activity. Samples shall be plainly identified by securely attached durable tags marked with the information specified below, and forwarded to the laboratory designated in the letter of authorization from the acquiring activity. The contractor shall submit with the preproduction models including manufacturing drawings in accordance with applicable requirements of MIL-D-18300. Sample for preproduction test Antenna AS-333
