1、MIL-E-85583A( AS) 20 February 1987 SUPERStDING 28 June 1985 MIL-E-85583 (AS) MILITARY SPECIFICATION ELECTRIC POWER GENERATING CHANNEL, VARIABLE INPUT SPEED, ALTERNATING CURRENT, 400 Hz, AIRCRAFT; GENERAL SPECIFICATION FOR This specification is approved for use by the Naval Air Systems Command, Depar
2、tment of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. i. 1. SCOPE 1.1 Scope. This specification establishes the general requirements for three phase, four wire, 115/200 volt, 400 Hz ac (alternating current) variable input speed electric power gener
3、ating channels, herein referred to as the Generator Package for use on aircraft. 2. APPLICABLE DOCUMENT 2.1 Government documents. * 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this specification to the extent specified herein.
4、 Unless otherwise specified, the issues of these documents 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. SPEC IF ICATIONS Mi 1 i tary MI L-P-116 Preservation Methods of MIL-W-5088 Wiri
5、ng, Aerospace Vehicle MIL-H-5606 Hydraulic Fluid, Petroleum Base Aircraft and Ordnance MIL-S-7742 Screw Threads, Standard, Aeronautical Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Systems En
6、gineering and Standardization Department (Code 53), Naval Air Engineering Center, Lakehurst, NJ Standardization Document Improvement Proposal (DD Form 426) appearing at the end of this document or by letter. 08733-5100, by using the self-addressed AMSC N/A DISTRIBUTION STATEMENT A. Approved for publ
7、ic release; I FSC 6115 distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SPECIFICATIONS (Continued) Military (Continued) MIL-L-7808 MIL-T-7928 MIL-S-8879 MIL-L-23699 MI L-E-8191 O STAN DARDS Federa 1 FED-STD-595 Mi 1 i tary M
8、IL-STD-129 MIL-STD-130 MI L-STD-454 MI L-STD-481 MIL-STD-704 MIL- STD-785 MIL-STD-794 MIL-STD-1515 Lubricating Oil Aircraft Turbine Engine, Synthetic Base, NATO Code Number 0-148 Terminal, Lug and Splice, Crimp Style Copper; General Specification for Screw Threads, Controlled Radius Root with Increa
9、sed Minor Diameter, General Specification for Lubricating Oil, Aircraft Turbine Engine, Synthethic Base Electrical Power Generating and Control Equipment, Aircraft, Testing; General Specification for Co 1 or Marking for Shipment and Storage Identification Marking of U.S. Military Property Standard G
10、eneral Requirements for Electronic Equ i pmen t Configuration Control Engineering Changes, Deviations and Waivers Aircraft Electric Power Characteristics Reliability Program for Systems and Equipment Development and Production Parts and Equipment, Procedures for Packing and Packaging Fastener System
11、s for Aerospace Applications 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-E-85583A(AS) STANDARDS (Continued) Mi 1 i t ary (Conti nued ) MIL-STD-1629 DOD-STD-1686 Procedures for Performing a Failure Node, Effects and Criticality Analysis Ele
12、ctrostatic Discharge Control Program for Protection of Electrical and Electronic Parts, Assemblies and Equipment (Excluding Electrical i ty Initiated Explosive Devices) ( Metr i c ) 2. MIL-STD-2068 Reliability Development Tests MS 3376 MS 14169 MS 90415 Nut, Self-Locking; Reduced Height, Steel 450 d
13、egrees F, 12 Point Captive Washer Circular Spline and Adapter Details, Engine Driven Nut, Self-Locking; Steel, 160 KSI, 450 degrees F, 12 Point, Captive Washer MILITARY HANDBOOKS MIL-HDBK-217 Reliability of Electronic Equipment (See Supplement 1 of this specification for a list of associated Militar
14、y Detai 1 Specifications.) * 2.1.2 Other Government documents, drawings and publications. The following other Government documents, drawings and publications form a part of this specification to the extent specified herein. Unless specified, the issues shall be those in effect on the date of the sol
15、icitation. NAVAL AIR SYSTEMS COMMAND DOCUMENTS O1 -lA-17 Aviation Hydraulics Manual AS-461 3 Application and Derating Requirements for E 1 ectri cal Comp0nen.t s DEPARTMENT OF DEFENSE SD-6 Provisions Governing Qualifications (Copies of specifications, standards, handbooks, drawings, and pub1 ication
16、s required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contract i ng off i Cer. ) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-E-85583A( AS) 2.1.3
17、 Order of precedence. of this specification and the references cited herein, the text of this specification shall take precedence. 3. REQUIREMENTS In the event of a conflict between the text * 3.1 Specification Sheets. The individual item requirements shall be as specified herein and in accordance w
18、ith the specification sheet. of any conflict between the requirements of this specification and the specification sheet, the latter shall govern. (If a specific requirement specified herein is not required for an item, it shall be so indicated on the specification sheet (e.g. Shock - N/A.). In the e
19、vent 1. 3.2 Qualification. Channel or channel components furnished under this specification shall be products which are qualified for listing on the applicable qualified products list at the time set for opening of bids (see 4. and 6.). 3.3 Materials. Materials used in the manufacture of channel com
20、ponents shall be of high quality suitable for the intended purpose. conforming to contractors specifications may be used provided the specifications contain provisions for adequate tests and the required life, performance, reliability, and warranty period are achievea. The use of the contractors spe
21、cifications does not constitute waiver of Government inspection. Materials 3.3.1 Metals. 3.3.1.1 Corrosion resistance. Materials shall be of a corrosion resisting type or suitably processed to withstand the environmental test requirements of MIL-E-81910. 3.3.2 Toxicity and fire resistance. Non-metal
22、lic materials used shall be flame resistant, shall not support combustion, and shall be nontoxic when exposed to flame as well as when used under all operating and environmental conditions herein. 3.4 Design and construction. * 3.4.1 General design and construction. All channel components shall conf
23、orm to the applicable specification sheet and shall be capable of demonstrating conformance to all the tests of Section 4 specification. Each channel shall provide two electrically independent sources of electric power: (1) an ac (alternating current) power source, the main source of power for gener
24、al distribution to aircraft electrically powered equipment; and (2) a dc (direct current) power source, the power source for the control and monitoring functions within the channel and for electrical bus protection and control equipment external to the channel as specified in the appl icabl e specif
25、ication sheet. of this 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-E-85583A( AS) 3.4.1.1 Environmental. All channel components shall operate in accordance with this specification when subjected to the tests of MIL-E-81910, except that the
26、minimum coolant temperature for start-up operation of any channel component shall be -40C. After start-up the minimum coolant temperature shall be -40C for the generator package and -55C for all other channel components. The maximum altitude requirements shall be in accordance with the applicable sp
27、ecification sheet. power source can be controlled by a switch by which the following control 3.4.1.2 Channel control switch. Provisions shall be made so that the ac performed in the positions indicated. 1. NORMAL - In this position the ac power source automatically energizes its bus when the electri
28、cal characteristics are within prescribed limits. A warning light shall be “ON“ when the main power bus is not energized. Protective circuits shall be operative. functions are a. b. C. OFF-RESET - In this position the ac power source is electrically deenergized and the generator feeder contactor is
29、open. Protective circuits shall reset. The warning light shall be ON. TEST - This is a momentary position, where the ac power source is energized with the generator feeder contactor open. Protective circuits shall be operative. The warning light shall be “OFF“ if the power characteristics are within
30、 the protective limits for normal operation, otherwise the light shall be “ON“. * 3.4.1.3 Reliability. Reliability shall be considered in each phase of the channel design process. detailed design shall include a stress analysis with associated predictions and allocations in conformance with MIL-HDBK
31、-217, sneak circuit and worst case analysis on all channel control and protective circuits in accordance with MIL-STD-785, Task 205 and 206, parts derating in accordance with the requirements of AS-4613 for class A equipment, a failure modes and effects analysis, thermal considerations, corrosion co
32、ntrol, and electrostatic discharge control. The test program shall include the test, analyze and fix methods of MIL-STD-2068 during all required testing and provisions shall be made for the reporting, analysis, and correction of all failures occuring during the test program. Manufacturing screening
33、of each channel component shall be provided by the random vibration and temperature cycling of the burn-in test. Techinques used to determine and evaluate the 3.4.1.4 Shock mounts. Shock mounts (or vibration isolators) shall not be used. 3.4.1.5 Electrostatic Discharge Control. The contractor shall
34、establish and implement as applicable, an electrostatic discharge (ESD) control program in accordance with the requirements of DOD-STD-1686 when either C1 ass 1 or Class 2 parts as identified in Table II, Appendix A of DOD-STD-1686 are used in the design and manufacture of these channel components.
35、5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-E-85583A(AS) 3.4.1.6 Electric connections. 3.4.1.6.1 External electric connections. Channel components shall be so desiqned that external connections and wirinq can be made in accordance with MIL
36、-5088. except for radio noise shielding. No channel component structure shall be used as a current path 3.4.1.6.2 Terminal block design. Where terminals are used for the external connection to channel components they shall be of the stud-type and shall be designed so that the current is conducted by
37、 means of surface to surface contact and not through the stud threads. All studs shall be steel, corrosion resistant, C-34 to C-42 Rockwell hardness, .18 inches minimum diameter, and shall be of sufficient length to accommodate two MIL-T-7928 lugs. All nuts for studs by which external wiring is atta
38、ched to engine or nacelle mounted channel components shall be furnished with the terminal block and shall conform to either MS 3376 or MS90415. There shall be no dielectric material in the compression buildup of a terminal. Terminal block shall be so designed that they can be removed and replaced on
39、 the component without the necessity for rebrazing or soldering. separation of leads or terminals shall be provided on the terminal block. A durable, reusable, non conductive terminal cover shall be provided to cover terminal blocks and all attached terminal lugs used in making external connections
40、to channel components. Terminal designations shall be marked durably, legibly, and prominently on the terminal block itself or on the generator package adjacent to the terminal block. adequate to prevent breakdown under all specified environmental conditions for the required life of the equipment. 1
41、. Barriers affording a positive 3.4.1.7 Dielectric. Insulation used for electrical isolation shall be 3.4.1.8 Threaded parts. A11 threads shall conform to MIL-S-7742 or MIL-S-8879. All internal or external parts which are threaded shall be positively locked. Accidental loosening of threaded parts sh
42、all be prevented by self locking nuts, safety wiring, or other methods. Staking shall not be used. All removable parts externally screwed into the channel components (screws, bolts, caps, plugs, filters, fittings, etc.) shall to be screwed into steel inserts selected and applied in accordance with M
43、IL-STD-1515, requirement 205. All externally accessible bolts and screws with the exception of those securing nameplates or electric receptacles shall be not less than 3/16 inch minimum in diameter for engine or gear box mounted equipments. 3.4.1.9 Adjustments. No provisions for external adjustments
44、 shall be provided and no adjustment or aliqnments shall be required during installation of any channel component. All adjustments shall to be made at the time of manufacture or when a component is being restored to a like new condition. devices for making adjustments are installed within channel co
45、mponents, suitable means for locking and sealing shall be provided. If 3.4.1.10 Mean Flight Hours Between Failure. While operating under specified conditions the minimum mean flight hours between failure (MFHBF) for the generator package shall be 3000 hours for its first 5.5 years of service life, i
46、ncluding storage. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-E-85583A( AS) 3.4.1.11 External openings in channel components. All case openings shall be protected by suitable means against passage of round objects of 3/16 inch or greater i
47、n diameter. 3.4.1.12 Color. Channel components shall be furnished in a color conforming to FED-STD-595, color number 17875, except that as an alternate they may be finished with a chemical filin resulting in an aluminum or stainless steel color. The finishes shall be undamaged by the required enviro
48、nmental testing. 3.4.1.13 Failure mode and effects analysis (FMEA). A failure mode and effects analvsis shall be Derformed in accordance with the reauirements of MI L-STD-1629: control functions and no single fault or failure shall result in channel operation outside the protective limits specified
49、herein. Channel protect i ve functions s ha1 1 be i ndependent of the 3.4.1.14 Anti-cycling. The channel shall provide a means to prevent on/off cycling when the system trips on a protective function. The channel control shall reset once after the channel trips when the control switch is placed in the OFF-RESET position. If the cause of the trip still remains, the channel shall trip again when the control switch is placed in the NORMAL postion and remain
