SAE AS 7997-1999 Motors Aircraft Hydraulic Constant Displacement General Specification for《飞行器用液压定量马达总规范》.pdf

《SAE AS 7997-1999 Motors Aircraft Hydraulic Constant Displacement General Specification for《飞行器用液压定量马达总规范》.pdf》由会员分享，可在线阅读，更多相关《SAE AS 7997-1999 Motors Aircraft Hydraulic Constant Displacement General Specification for《飞行器用液压定量马达总规范》.pdf（28页珍藏版）》请在麦多课文档分享上搜索。

1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro

2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.Copyright 1999 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.

3、A.QUESTIONS REGARDING THIS DOCUMENT: (724) 772-8510 FAX: (724) 776-0243TO PLACE A DOCUMENT ORDER: (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS http:/www.sae.org400 Commonwealth Drive, Warrendale, PA 15096-0001AEROSPACE STANDARDSubmitted for recognition as an American National StandardAS7997Issu

4、ed 1999-04Motors, Aircraft Hydraulic, Constant DisplacementGeneral Specification ForFSC 1650NOTICEThis document has been taken directly from U.S. Military Specification MIL-M-7997C and contains only minor editorial and format changes required to bring it into conformance with the publishing requirem

5、ents of SAE technical standards. The initial release of this document is intended to replace MIL-M-7997C. Any part numbers established by the original specification remain unchanged.The original Military Specification was adopted as an SAE standard under the provisions of the SAE Technical Standards

6、 Board (TSB) Rules and Regulations (TSB 001) pertaining to accelerated adoption of government specifications and standards. TSB rules provide for (a) the publication of portions of unrevised government specifications and standards without consensus voting at the SAE Committee level, and (b) the use

7、of the existing government specification or standard format.Under Department of Defense policies and procedures, any qualification requirements and associated qualified products lists are mandatory for DOD contracts. Any requirement relating to qualified products lists (QPLs) has not been adopted by

8、 SAE and is not part of this SAE technical document.SAE AS7997 - 2 -1. SCOPE:1.1 Scope:This Specification covers constant displacement hydraulic motors, generally remotely mounted, using hydraulic fluid under pressure as the energy transfer medium for driving various accessories. Hydraulic motors sh

9、all be suitable for use in aircraft hydraulic systems conforming to and as defined in MIL-H-5440 and MIL-H-8891 as applicable.1.2 Classification:Aircraft constant displacement hydraulic motors shall be of the following types and classes, as specified (see 6.2):Range RatedType I. -65F (-54C) to +160F

10、 (71C) 110F (43C)Type II. -65F (-54C) to +275F (135C) 225F (107C)Type III. -65F (-54C) to +390F (200C) 350F (178C)Class 1500. 1500 psi (103 Bar) rated inlet pressureClass 3000. 3000 psi (207 Bar) rated inlet pressureClass 4000. 4000 psi (276 Bar) rated inlet pressureCategory A. Secondary. Secondary

11、flight controls, winches, gun drives, constant speed drives, transfer packages, etc.Category B. Primary. Primary flight controls, modulating slats, etc. See Para 4.6.15 for utility and primary motor endurance test requirements.SAE AS7997 - 3 -2. APPLICABLE DOCUMENTS:2.1 Government documents:2.1.1 Sp

12、ecifications, standards, and handbooks: Unless otherwise specified, the following specifications, standards, and handbooks of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation form a part of this specification to

13、the extent specified herein.SPECIFICATIONSFEDERALNN-P-530 Plywood - Flat PanelQQ-C-320 Chromium Plating (Electrodeposited)QQ-N-290 Nickel Plating (Electrodeposited)QQ-P-416 Plating, Cadmium (Electrodeposited)QQ-S-365 Silver Plating (Electrodeposited)QQ-Z-325 Zinc Coating, Electrodeposited, Requireme

14、nts forPPP-B-566 Boxes, Folding, PaperboardPPP-B-585 Boxes, Wood, WireboundPPP-B-591 Boxes, Fiberboard, Wood-CleatedPPP-B-601 Boxes, Wood, Cleated-PlywoodPPP-B-621 Boxes, Wood, Nailed and Lock-CornerPPP-B-636 Box, FiberboardPPP-B-676 Boxes, Set-UpPPP-T-60 Tape: Pressure-Sensitive Adhesive, Waterproo

15、f, for PackagingMILITARYMIL-P-116 Preservation, Methods ofMIL-B-121 Barrier Material, Greaseproofed, Waterproofed, FlexibleMIL-C-5501 Caps and Plugs, Protective, Dust and Moisture SealMIL-C-5541 Chemical Films and Chemical Film for Aluminum and Aluminum AlloysMIL-H-5606 Hydraulic Fluid, Petroleum Ba

16、se, Aircraft, Missile, and OrdnanceMIL-H-6083 Hydraulic Fluid, Petroleum Base, Preservation and TestingMIL-A-8625 Anodic Coatings, for Aluminum and Aluminum AlloysMIL-H-8775 Hydraulic System Components, Aircraft and Missiles, General Specification forMIL-F-8815 Filter and Filter Elements, Fluid Pres

17、sure, Hydraulic Line, 15 Micron Absolute and 5 Micron Absolute Type II SystemsMIL-S-8879 Screw Threads, Controlled Radius Root With Increased Minor Diameter; General Specification forSAE AS7997 - 4 -2.1.1 (Continued):MIL-H-8890 Hydraulic Components, Type III (-65 to 450F), General Specification forM

18、IL-L-10547 Liners, Case, and Sheet, Overwrap, Water-Vaporproof or Waterproof, FlexibleMIL-T-10727 Tin Plating; Electrodeposited or Hot Dipped, for Ferrous and Nonferrous MetalsMIL-C-11796 Corrosion Preventive Compound, Petrolatum, Hot ApplicationMIL-P-15024 Plate, Identification - Information and Ma

19、rkingsMIL-C-16173 Corrosion Preventive Compound, Solvent Cutback, Cold ApplicationMIL-F-25682 Filter and Filter Element, Fluid Pressure, Hydraulic, absolute, 25 Micron,-65 to +450 and +600FMIL-C-26074 Coating, Nickel-Phosphorus, Electroless Nickel, Requirements forMIL-H-83282 Hydraulic Fluid, Fire R

20、esistant Synthetic Hydrocarbon Base, AircraftMIL-P-83461 Packings, Preformed-Petroleum Hydraulic Fluid Resistant Improved Performance 275F (135C)STANDARDSMILITARYDOD-STD-100 Engineering Drawing PracticesMIL-STD-129 Marking for Shipment and StorageMIL-STD-130 Identification Marking of U.S. Military P

21、ropertyMIL-STD-143 Specifications and Standards, Order of Precedence for the Selection ofMIL-STD-276 Impregnation of Porous Nonferrous Metal CastingsMIL-STD-280 Definitions of Item Levels, Item Exchangeability Models, and Related TermsMIL-STD-781 Reliability Tests: Exponential DistributionMIL-STD-81

22、0 Environmental Test MethodsMIL-STD-889 Dissimilar MetalsMS3332 Flange - Accessory, 5,000 B.C. Round, Design Standard forMS3335 Spline Details, Accessory Drives and FlangesMS21344 Fitting, Installation of Flared Tube, Straight Threaded Connectors Design Standard forMS28773 Retainer, Packing Backup,

23、Tetrafluoroethylene, Thread Tube Fitting BossMS28774 Retainer, Packing Backup, Single Turn, TetrafluoroethyleneMS28775 Packing, Preformed, Hydraulic Plus 275 Deg. F (O-Ring)MS28782 Retainer, Packing, Backup, TeflonMS28783 Ring, Gasket, Backup, TeflonMS33649 Boss, Fluid Connection, Internal Straight

24、ThreadAIR FORCE-NAVY AERONAUTICALAND10260 Flange, Type X Accessory MountingAND10261 Flange, Type XI Accessory MountingAND10262 Flange, Type XII Accessory MountingSAE AS7997 - 5 -2.1.1 (Continued):(Copies of specifications, standards, handbooks, drawings, and publications required by manufacturers in

25、 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 document forms a part of this specification to the extent specified herein. The issues of the documents which are indicated

26、 as DoD adopted shall be the issue listed in the current DoDISS and the supplement thereto, if applicable.SOCIETY OF AUTOMOTIVE ENGINEERSAIR-1362 Physical Properties of Fluids(Application for copies of SAE publications should be addressed to the Society of Automotive Engineers, Inc., 400 Commonwealt

27、h Drive, Warrendale, PA 15096.)2.3 Order of precedence:In the event of a conflict between the text of this specification and the references cited herein, the text of this specification shall take precedence.3. REQUIREMENTS:3.1 First article/qualification:The motors furnished under this specification

28、 shall be a product which has been tested and passed the first article or qualification as specified in the detail specification.3.2 Precedence:The requirements of MIL-H-8775 or MIL-H-8890, as applicable apply as requirements of this specification with the exceptions and additions specified herein.

29、In case of conflict between the requirements of this specification and the detail specification the requirements of the detail specification shall take precedence.3.3 Selection of specifications and standards:Specifications and standards for necessary commodities and services not specified herein sh

30、all be selected in accordance with MIL-STD-143.SAE AS7997 - 6 -3.4 Materials:Materials used in the manufacture of hydraulic motors shall be of high quality, suitable for the purpose, and shall conform to the applicable Government specifications. Materials conforming to the motor manufacturers specif

31、ications may be used provided the specifications are acceptable to the procuring activity and contain provisions for adequate tests. The use of motor manufacturers specifications shall not constitute waiver of other applicable specifications.3.4.1 Metals: All metals used in the construction of hydra

32、ulic motors, except those which are in constant contact with the hydraulic fluid, shall be of a corrosion-resistant type or shall be suitably protected to resist corrosion. The use of dissimilar metals, especially brass, copper, or steel in intimate metal-to-metal contact with aluminum alloy, shall

33、be avoided wherever practicable. Dissimilar metals are defined in MIL-STD-889.3.4.1.1 Type I system motors: Except for internal surfaces in constant contact with hydraulic fluid, ferrous alloys shall have a chromium content of not less than 12 percent or shall be suitably protected against corrosion

34、 as specified in 3.4.2.1. In addition, tin, cadmium and zinc platings shall not be used for internal parts or on internal surfaces in contact with hydraulic fluid or exposed to its vapors. O-ring grooves for external seals shall not be considered as internal surfaces in constant contact with hydraul

35、ic fluid. Magnesium shall not be used.3.4.1.2 Type II and type III system motors: Ferrous alloys shall have a chromium content of not less than 12 percent or shall be suitably protected against corrosion as specified in 3.4.2.1. In addition, tin, cadmium and zinc platings shall not be used for inter

36、nal parts or on internal surfaces in contact with hydraulic fluid or exposed to its vapors. Magnesium shall not be used. Where performance or reliability of the motor will be jeopardized by the use of materials and processes as specified in 3.4.1 and 3.4.2, alternate materials or processes may be us

37、ed, subject to the approval of the procuring activity. Such materials or processes shall be selected so as to provide the maximum degree of corrosion resistance consistent with the performance requirements.3.4.2 Corrosion protection: Metals which do not inherently possess adequate corrosion-resistin

38、g characteristics shall be suitably protected, in accordance with the following subparagraphs, to resist corrosion which may result from such conditions as dissimilar metal combinations, moisture, salt spray, and high temperature deterioration as applicable.3.4.2.1 Ferrous and copper alloys: Ferrous

39、 alloys requiring corrosion preventive treatment, and all copper alloys, except for parts having bearing surfaces, shall have a suitable electrodeposited metallic coating selected from Table I. Cadmium and zinc plating shall not be used for internal parts or on internal surfaces in contact with hydr

40、aulic fluid or exposed to its vapors and not where subject to abrasion. Where not indicated, class and type are at the option of the manufacturer.SAE AS7997 - 7 -3.4.2.1 (Continued):Other metallic coatings, the use of which has been demonstrated to be satisfactory to the purchaser, such as electrode

41、posited 85 percent tin, 15 percent cadmium alloy may be used.3.4.3 Anodizing: Unless otherwise authorized, all aluminum alloys shall be anodized in accordance with MIL-A-8625, except that in the absence of abrasive conditions they may be coated with chemical film in accordance with MIL-C-5541. The e

42、xceptions noted will be subject to the approval of the procuring activity.3.4.4 Castings: Castings shall be of high quality, clean, sound, and free from cracks, blow holes, and excessive porosity and other defects. Defects not materially affecting the suitability of the castings may be repaired at t

43、he foundry or during machining by peening, impregnation, welding, or other methods acceptable to the procuring activity. Inspection and repair of castings shall be governed by quality control techniques and standards satisfactory to the procuring activity. When impregnation castings are used, they s

44、hall be in accordance with impregnation procedures and inspections requirements of MIL-STD-276.3.4.5 Seals: For Type I system motors, static and dynamic seals where practicable, shall be in accordance with MS28775. For Type II system motors, static and dynamic seals, where practicable, shall be in a

45、ccordance with MIL-P-83461 (improved performance at +275F). Back up seals shall be in accordance with MS28773, MS28774, MS28782, or MS28783. Nonstandard seals necessary to demonstrate compliance with the requirements of this specification, may be used subject to the approval of the procuring activit

46、y. For Type III system motors, seals and back-up rings used shall be subject to approval of the procuring activity.TABLE I. Metallic coatings.Cadmium Plating QQ-P-416, Type II, Class 2Zinc Plating QQ-Z-325, Type II, Class 2Chromium Plating QQ-C-320Nickel Plating QQ-N-290Silver Plating QQ-S-365Tin Pl

47、ating MIL-T-10727, Type IElectroless Nickel MIL-C-26074SAE AS7997 - 8 -3.5 Design and construction:3.5.1 Direction of rotation: Unless otherwise specified in the detail specification, the hydraulic motors shall operate satisfactorily in either direction of rotation. It shall not be necessary to alte

48、r the motor to effect a change in the direction of rotation, but merely to reverse the direction of flow.3.5.2 Rated speed: The rated speed of a motor shall be the maximum speed at which the motor is designed to operate continuously at rated temperature and rated differential pressure. The rated spe

49、ed shall be measured and stated as RPM of the motor output shaft and shall be specified in the detail specification.3.5.2.1 Overspeed: Motor performance and integrity shall not be impaired after driven at intermittent speeds up to 125 percent of rated RPM, for 30 minutes.3.5.3 Shaft seal: The hydraulic motor shall be provided with a suitable seal for the motor shaft. No changes of the shaft seal shall be required for operation in either direction of rotation. The shaft seal shall be capable of meeting the tests and environments specified