NAVY MIL-PRF-8932 B-1998 SWITCHES PRESSURE BULKHEAD MOUNTED AIRCRAFT GENERAL SPECIFICATION FOR《飞机中装有防水壁的压力开关的一般规定》.pdf
《NAVY MIL-PRF-8932 B-1998 SWITCHES PRESSURE BULKHEAD MOUNTED AIRCRAFT GENERAL SPECIFICATION FOR《飞机中装有防水壁的压力开关的一般规定》.pdf》由会员分享,可在线阅读,更多相关《NAVY MIL-PRF-8932 B-1998 SWITCHES PRESSURE BULKHEAD MOUNTED AIRCRAFT GENERAL SPECIFICATION FOR《飞机中装有防水壁的压力开关的一般规定》.pdf(17页珍藏版)》请在麦多课文档分享上搜索。
1、 flIL-PRF-8932B E 9999906 2072657 891 = I INCH-POUND I 27 August 1998 SUPFERSEDING 12 August 1980 MIL -PW- 8 93 2B MIL-S-8932A PERFORMANCE SPECIFICATION SWITCHES, PRESSURE, BULKHEAD MOUNTED, AIRCRAFT, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of
2、 the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for aircraft pressure actuated electrical switches. 1.2 Classification. Pressure switches covered by this specification are of the following classes as specified (see 6.2). 1.2.1 Classes. Class 1 - Absolute pr
3、essure switch (see 6.3.2). Class 2 - Differential pressure switch (see 6.3.3). Class 3 - Gauge pressure switch (see 6.3.4). Class 4 - Approximate gauge pressure switch (see 6.3.5). comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document
4、should be addressed to: Commander, Naval Air Warfare Center Aircraft Division, Code 4141 OOB 120-3, Highway 547, Lakehurst, NJ 08733-5100, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 1650 DISTRIBUTION STAT
5、EMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8932B 9999906 2072658 728 MIL-PRF-8932B 2. APPLICABLE DOCUMENTS . 2.1 General. The documents listed in this section are specified
6、 in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or 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
7、 must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 SDecifications and standards. The following specifications and standards form a part of this document to the extent specified herein. Unies
8、s otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS DEPARTMENT OF DEFENSE MIL-PRF-5624 - Turbine Fuel, Aviation, Grad
9、es JP-4, JP-5, and JP-S/JP-8ST MIL-PRF-83282 - Hydraulic Fluid, Fire Resistant, Synthetic Hydrocarbon Base, Metric, NATO Code Number H-537 MIL-PRF-87257 - Hydraulic Fluid, Fire Resistant; Low Temperature, Synthetic Hydrocarbon Base, Aircraft and Missile STANDARDS DEPARTMENT OF DEFENSE MIL-STD-130 -
10、Identification Marking of US Military Property MIL-STD-704 - Aircraft Electric Power Characteristics MIL-STD-8 1 O - Environmental Test Methods (See supplement 1 for list of specification sheets and MS sheets) (Uniess otherwise indicated, copies of the above specifications and standards are availabl
11、e fkom the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19 1 1 1-5094.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein (except for related associated specifications or specification sheet
12、s), the 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8932B text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMEN
13、TS 3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the applicable specification sheet. In the event of any conflict between the requirements of this specification and the specification sheet, the latter shall govern. 3.2 First article. W
14、hen specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.2. 3.3 Materials. Materiais shall be compatible with fuel and hydraulic fluids conforming to MIL-PRF-5624 and MIL-PRF-83282 or MIL-PRF-87257. 3.3.1 Non-mwnetic materials. Non-magnetic materials shal
15、l be used for all parts of the switch. 3.3.2 Metals. Metals shall be corrosion resistant or protected from corrosion. If materials other than metals are used, they shall be treated to resist corrosion. Materiais having finishes and coatings which can crack, chip or scale due to fuels, salt spray, or
16、 atmospheric conditions to which the switch may be subjected in storage or during normal service life shall not be used. 3.3.2.1 Dissimilar metals. Where dissimilar metals are used in contact with each other protection shall be provided (see 6.7). 3.3.2.2 Electrical contact parts. The electrical con
17、tact parts shall carry the electrical loads specified in the applicable specification sheets. 3.3.2.5 Mamesium allov parts. Magnesium alloy parts shall not be used. 3.3 -2.6 Recvcled. recovered, or environmentally ureferable materials. Recycled, recovered, or environmentally preferable materials sho
18、uld 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. 3.3.3 Fungus proof materials. Materials which are nutrients for fungi shall not be used. 3.4 Characteristics.
19、The external switches shall conform to the dimensions shown on figure 1 and the applicable specification sheets. The manufacturers discretion shall govern the internal design of the switch. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-PRF-
20、8932B 3.4.1 Adiustments. Switches shall be provided with means of adjustment. Means of adjustments shall be externally accessible and shall be designed to meet the requirements specified in table I of the applicable specification sheets. All adjustments shall be provided with a locking mechanism for
21、 securely locking them after initial adjustments have been made to prevent loosening due to jars, strains, vibrations, and other conditions incident to shipping, storage, installation, and service. All adjustment mechanisms shall be designed in such a way that adjustment can be made without damaging
22、 the hermetic seal of the switch case. Switch shall be set at the factory during manufacture to the switching point(s) as specified in the applicable specification sheets. 3.4.1.1 Pressure adiustment. Switches shall provide means for accurately adjusting the actuation or deactuation of the switch va
23、lve or similar device. The adjustment shall incorporate a recessed slot or hex socket, which shall be filled with a potting compound. The switch shall be completely adjustable throughout the specified range so that the operating setting at which the switch operates, shall be set anywhere within the
24、pressure range and tolerances specified in the applicable specification sheets. 3.4.2 Pressure ports. Pressure ports for all switches shall be provided. When a separate port is required for the case pressure release, it shall interface with a connecting adapter. 3.4.3 Switch case. The switch case di
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