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 entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, 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 2010 SAE International All rights reserved. No part of this publication ma
3、y be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside US
4、A) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS595DAEROSPACESTANDARDAS595 REV. D Issued 1959-02 Revised 2010-08Superseding AS595C (R) Aerosp
5、ace Civil Type Variable Delivery, Pressure Compensated, Hydraulic Pump RATIONALEAS595 has been updated to Revision D for the following reasons: a. Additional technical requirements and information have been introduced b. Technical and editorial corrections have been made c. The references called up
6、in the document have been updated TABLE OF CONTENTS 1. SCOPE 41.1 Field of Application 5 2. REFERENCES 52.1 Applicable Documents 52.1.1 SAE Publications . 52.1.2 European Aviation Regulations . 62.1.3 FAA Publications . 62.1.4 ISO Publications 62.1.5 Joint Aviation Authorities Committee Documents .
7、62.1.6 RTCA Publications 72.1.7 U.S. Government Documents . 72.2 Related Publications . 72.2.1 SAE Publications . 72.3 Definitions . 7 3. REQUIREMENTS . 103.1 General . 103.1.1 System Specification . 103.1.2 System Characteristics . 103.1.3 Airworthiness Requirements . 113.2 Qualification 113.3 Func
8、tional Requirements 113.3.1 Hydraulic Fluid 113.3.2 Rated Discharge Pressure 113.3.3 Maximum Full-Flow Pressure . 123.3.4 Inlet Pressures 143.3.5 Case Drain Pressures . 143.3.6 Case Drain Flow 143.3.7 Rated Fluid Temperature 143.3.8 Minimum Continuous Fluid Temperature 15Provided by IHSNot for Resal
9、eNo reproduction or networking permitted without license from IHS-,-,-SAE AS595D Page 2 of 393.3.9 Rated Output Flow 153.3.10 Rated Speed . 153.3.11 Rated Endurance 153.3.12 Torque and Heat Rejection . 153.3.13 Rated Endurance 183.3.14 Torque and Heat Rejection . 183.3.15 Efficiency . 183.3.16 Disch
10、arge Pressure Pulsations . 183.3.17 Variable Delivery Control 183.3.18 Response Time . 183.3.19 Stability 193.3.20 Maximum Transient Discharge Pressure 193.3.21 Depressurization . 203.3.22 Balance . 213.3.23 Adjustment 213.3.24 Safety Wire Sealing . 213.3.25 Directionally Critical Components . 213.3
11、.26 Pump Dry Running 213.4 Environmental Requirements 213.4.1 Altitude 213.4.2 Ambient and Pad Temperatures . 213.4.3 Vibration 213.4.4 Operational Shocks and Crash Safety 223.4.5 Other Environmental Conditions . 223.4.6 Fire Resistance . 223.4.7 Sonic Fatigue 223.4.8 Acoustic Noise 223.5 Installati
12、on Requirements . 223.5.1 Dimensions . 223.5.2 Weight . 223.5.3 Mounting . 233.5.4 Drive Coupling . 233.5.5 Ports 233.6 Detail Requirements . 233.6.1 Materials 233.6.2 Corrosion Protection . 243.6.3 Castings 243.6.4 Reclaimed Materials . 243.6.5 Seals . 243.6.6 Standard Parts 243.6.7 Marking . 243.6
13、.8 Electro-Conductive Bonding . 253.7 Strength Requirements . 253.7.1 Proof and Ultimate Pressure Requirements . 253.7.2 Impulse (Fatigue) Requirements 253.7.3 Combined Pressure and Structural Load Requirements 263.8 Design and Construction . 263.9 Maintainability . 263.10 Reliability Requirements .
14、 26 4. QUALITY ASSURANCE PROVISIONS 264.1 Responsibility for Inspection . 264.2 Classification of Tests . 264.3 Test Stand Requirements . 26 5. ACCEPTANCE TESTS . 275.1 Examination of the Product . 275.2 Test Program and Inspection Methods . 275.2.1 Proof Pressure Tests 27Provided by IHSNot for Resa
15、leNo reproduction or networking permitted without license from IHS-,-,-SAE AS595D Page 3 of 395.2.2 Break-in Run . 285.2.3 Load Cycles 285.2.4 Tear Down Inspection . 285.2.5 Fluid Contamination Test 285.2.6 Calibration . 295.2.7 Electro-Conductive Bonding . 295.3 Preparation for Shipment 305.4 Stora
16、ge and Packing . 30 6. QUALIFICATION TESTS 306.1 Qualification Procedure. 306.1.1 Qualification by Similarity 306.1.2 Pump Qualification Test Report 306.2 Range of Qualification Tests . 306.3 Expanded Envelope Acceptance Tests 316.4 Fluid Immersion Test 316.5 Calibration . 316.5.1 Pump Inlet Pressur
17、ized . 316.5.2 Flow Rate and Driving Torque Values 316.5.3 Heat Rejection Test 316.6 Maximum Pressure, Response Time and Pressure Pulsation Tests . 326.6.1 System Impedance . 326.6.2 Maximum Pressure Test . 326.6.3 Determination of Response Time . 336.6.4 Pressure Pulsation Test 336.7 Minimum Inlet
18、Pressure Test 336.8 Solenoid Tests 346.9 Endurance Test . 346.9.1 Accelerated Endurance Test . 346.9.2 Fluid for Endurance Test . 356.9.3 Filtration for Endurance Test . 356.9.4 Means to Monitor Pump Condition 356.9.5 Dimensional Check . 356.9.6 Calibration . 356.9.7 Start-Stop Cycles 356.9.8 Air In
19、gestion 366.9.9 Failure of Parts 366.9.10 Teardown Inspection . 366.9.11 Additional Endurance Test 366.10 Low Temperature and Thermal Shock Tests 366.10.1 Low Temperature Test 366.10.2 Thermal Shock Test 376.11 Other Environmental Tests . 376.12 Fire Resistance Test - Engine Driven Pump Only 376.13
20、Structural Tests . 376.13.1 Proof Pressure Test 376.13.2 Ultimate Pressure Test . 386.13.3 Combined Pressure and External Load Test 386.13.4 Pressure Impulse Test 386.14 Vibration Tests 386.14.1 Mounting of the Test Pump . 386.14.2 Resonant Frequency Vibration Test: 386.14.3 Cyclic Frequency Vibrati
21、on Test . 386.14.4 Other Vibration Tests 396.15 Drive Coupling Shear Test 39 7. NOTES 397.1 Revision Status . 39 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AS595D Page 4 of 39FIGURE 1 PRESSURE/DELIVERY CHARACTERISTICS OF A FLAT-CUT-OFF PRESS
22、URECOMPENSATED VARIABLE DELIVERY HYDRAULIC PUMP . 12 FIGURE 2A NOMOGRAPH OF MAXIMUM RECOMMENDED VALUES FOR RATED SPEEDS AGAINST PUMP DISPLACEMENT (AMERICAN UNITS. 15 FIGURE 2B NOMOGRAPH OF MAXIMUM RECOMMENDED VALUES FOR RATED SPEEDS AGAINST PUMP DISPLACEMENT (METRIC UNITS 16 FIGURE 3 TYPICAL VARIATI
23、ON OF PRESSURE AGAINST TIME TRANSIENT FROMMAXIMUM FULL-FLOW PRESSURE TO RATED DISCHARGE PRESSURE . 19 FIGURE 4 TYPICAL VARIATION OF PRESSURE AGAINST TIME TRANSIENT FROMRATED DISCHARGE PRESSURE (ZERO-FLOW) TO MAXIMUM FULL-FLOW PRESSURE 19 FIGURE 5 NAMEPLATE DATA 24 FIGURE 6 ADDITIONAL NAMEPLATE DATA
24、. 24 TABLE 1 ENDURANCE TEST CONDITIONS . 34 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AS595D Page 5 of 391. SCOPE This SAE Aerospace Standard (AS) establishes the general requirements for the design, construction, acceptance and qualificati
25、on testing of flat cut-off pressure compensated, variable delivery hydraulic pumps, used in civil aircraft hydraulicsystems. It also provides parameters for a Procurement Specification to be used in conjunction with this AS for each pump.NOTE: Hydraulic pumps may incorporate features such as a clutc
26、h in the input drive, which will not be covered by this standard.1.1 Field of Application This AS is primarily for hydraulic pumps driven by an engine; however, it also can be applied to pumps driven by other power sources such as electric motors, ram air turbines and engine bleed air turbines. Thes
27、e pumps may be soft cut-off pressure compensated, variable delivery type due to input power limitations. Pumps conforming to this standard are intended mainly for use in commercial aircraft hydraulic systems conforming to the general requirements of ARP4752, and to the regulations of 14 CFR Part 25
28、and/or CS-25/JAR 25. However, pumps conforming to this AS can also be used in: x Civil aircraft hydraulic systems conforming to the regulations of 14 CFR Part 23 and/or CS-23/JAR 23. For these applications, the equivalent 14 CFR Part 23/CS-23/JAR 23 requirements should be used in place of the 14 CFR
29、 Part 25/CS-25/JAR 25 requirements. x Helicopter hydraulic systems conforming to the regulations of 14 CFR Part 27 and/or CS-27/JAR 27. For these applications, the equivalent 14 CFR Part 27/CS-27/JAR 27 requirements should be used in place of the 14 CFR Part 25/CS-25/JAR 25 requirements. x Helicopte
30、r hydraulic systems conforming to the general requirements of ARP4925, and to the regulations of 14 CFR Part 29 and/or CS-29/JAR 29. For these applications, the equivalent 14 CFR Part 29/CS-29/JAR 29 requirements should be used in place of the 14 CFR Part 25/CS-25/JAR 25 requirements. 2. REFERENCES
31、2.1 Applicable Documents The following publications form a part of this standard to the extent specified herein. The latest issue of the SAE documents shall apply. The applicable issue of the other documents shall be the issue in effect at the date of the purchase order. In the event of conflict bet
32、ween the text 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. 2.1.1 SAE Publications Available from SAE International, 400 Common
33、wealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AS1241 Fire Resistant Phosphate Ester Hydraulic Fluid for Aircraft ARP1288 Placarding of Aircraft Hydraulic Equipment to Identify Phosphate-Ester Fluid Compatibility AS1300
34、Boss, Ring Locked Fluid Connection Type, Standard Dimensions for AIR1922 System Integration Factors That Affect Hydraulic Pump Life AS4273 Fire Testing of Fluid Handling Components for Aircraft Engines and Aircraft Fluid Systems Provided by IHSNot for ResaleNo reproduction or networking permitted wi
35、thout license from IHS-,-,-SAE AS595D Page 6 of 39ARP4386 Terminology and Definitions for Aerospace Fluid Power, Actuation and Control Technologies ARP4752 Design and Installation of Commercial Transport Aircraft Hydraulic Systems ARP4925 Aerospace Design and Installation of Commercial Transport Hel
36、icopter Hydraulic Systems AS4941 General Requirements for Commercial Aircraft Hydraulic Components AS33649 Bosses, Fluid Connection, Internal Straight Thread 2.1.2 European Aviation Regulations Available from European Aviation Safety Agency, Otto Platz 1, Postfach 101253, D-50452 Cologne, Germany, T
37、el: +49-221-8999-000, www.easa.eu.int. CS-23 Certification Specifications for Normal, Utility, Aerobatic and Commuter Aeroplanes CS-25 Certification Specifications for Large AeroplanesCS-27 Certification Specifications for Small Rotorcraft CS-29 Certification Specifications for Large Rotorcraft 2.1.
38、3 FAA Publications Available from Federal Aviation Administration, 800 Independence Avenue, SW, Washington, DC 20591, Tel: 866-835-5322, www.faa.gov. 14 CFR Part 23 Code of Federal Regulations, Part 23 Airworthiness Standards: Normal, Utility, Acrobatic, and Commuter Category Airplanes 14 CFR Part 2
39、5 Code of Federal Regulations, Part 25 Airworthiness Standards, Transport Category Airplanes 14 CFR Part 27 Code of Federal Regulations, Part 27 Airworthiness Standards, Normal Category Rotorcraft 14 CFR Part 29 Code of Federal Regulations, Part 29 Airworthiness Standards, Transport Category Rotorcr
40、aft 2.1.4 ISO Publications Available from American National Standards Institute, 25 West 43rdStreet, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org, or International Organization for Standardization, 1 rue de Varembe, Case Postale 56, CH-1211, Geneva 20, Switzerland, Tel: +41-22-749-01-11,
41、 www.iso.org. ISO2685 Environmental Test Conditions for Airborne Equipment - Resistance to Fire in Designated Fire Zones 2.1.5 Joint Aviation Authorities Committee Documents Available from Global Engineering Documents, 15 Inverness Way, East Englewood, Colorado, 80112-5776, Tel: 800-854-7179, www. .
42、 JAR-23 Joint Airworthiness Requirements, Normal, Utility, Aerobatic and Commuter Category Aeroplanes JAR-25 Joint Airworthiness Requirements, Large Aeroplanes JAR-27 Joint Airworthiness Requirements, Small Rotorcraft JAR-29 Joint Airworthiness Requirements, Large Rotorcraft Provided by IHSNot for R
43、esaleNo reproduction or networking permitted without license from IHS-,-,-SAE AS595D Page 7 of 392.1.6 RTCA Publications Available from Radio Technical Commission for Aeronautics Inc., 1828 L Street, NW, Suite 805, Washington, DC 20036, Tel: 202-833-9339, www.rtca.gov. RTCA/DO-160 Environmental Cond
44、itions and Test Procedures for Airborne Equipment 2.1.7 U.S. Government Documents Available from the Document Automation and Production Service (DAPS), Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6257, http:/assist.daps.dia.mil/quicksearch.MIL-PRF-5606 Hydraulic Fluid
45、, Petroleum Base; Aircraft, Missile and OrdnanceMIL-F-8815 Filter and Filter Elements, Fluid Pressure, Hydraulic Line, 15 Micron Absolute and 5 Micron Absolute, Type II Systems, General Specification For MIL-PRF-83282 Hydraulic Fluid, Fire Resistant Synthetic Hydrocarbon Base, Aircraft MIL-PRF-87257
46、 Hydraulic Fluid, Fire Resistant Synthetic Hydrocarbon Base, Aircraft 2.2 Related Publications The following publication is provided for information purposes only, and is not a required part of this SAE Aerospace document.2.2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AS19692 Pumps, Military, Variable Flow, General Specification For 2.3 Definitions Refer to ARP4386 for general hydraulic system terms that are used in this Aerospace Standard. DESIGN
