1、_6$(7HFKQLFDO6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVUHSRUWLVSX EOLVKHGE6$(WRDGYDQFHWKHVWDWHRIWHFKQLFDO 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 therefrom, LVWKHVROHUHVSRQ
2、VLELOLWRIWKHXVHUSAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2017 SAE InternationalAll rights reserved. No part of this publication may be reproduced, sto
3、red 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 USA)Fax: 724-776-0790Ema
4、il: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on thisTechnical Report, please visithttp:/standards.sae.org/ARP5812AEROSPACERECOMMENDED PRACTICEARP5812Issued 2010-08Reaffirmed 2017-02Actuators, Linear Mechanical, General Specification GuideRATI
5、ONALEARP5812 has been reaffirmed to comply with the SAE five-year review policy.TABLE OF CONTENTS 1. SCOPE 52. REFERENCES 52.1 Applicable Documents 52.1.1 SAE Publications . 52.1.2 ANSI Publications . 62.1.3 ASME Publications 62.1.4 ASTM Publications 62.1.5 ISO Publications 62.1.6 NAS Publications 6
6、2.1.7 RTCA Publications 62.1.8 U.S. Government Publications 62.2 Definitions . 72.2.1 LINEAR MECHANICAL ACTUATORS . 72.2.2 EXTERNAL LOADS 72.2.3 LIMIT LOAD 72.2.4 ULTIMATE LOAD 72.2.5 STIFFNESS 82.2.6 ACCEPTANCE TESTS . 82.2.7 DEVELOPMENTAL TESTS 82.2.8 QUALIFICATION TESTS 82.2.9 LOSS OF FUNCTION .
7、82.2.10 DESIGN LIFE 82.2.11 SLIDING CONTACT SCREW. 82.2.12 JACKSCREW 82.2.13 DISCONNECT FAILURE 83. REQUIREMENTS . 93.1 Interface Definition 93.2 Configurations . 93.3 Characteristics 93.3.1 Performance 93.3.2 Lead and Pitch 93.3.3 Integrated Components 93.4 Physical Characteristics 103.4.1 Dimensio
8、ns . 103.4.2 Mounting . 103.4.3 Moisture Pockets. 103.4.4 Weight . 103.4.5 Stiffness 103.4.6 Backlash (Free play) . 103.5 Reliability . 103.5.1 Quantitative Reliability. 103.5.2 Reliability Analysis 113.5.3 Reliability Verification 123.6 Maintainability . 123.6.1 Maintainability Characteristics 123.
9、6.2 Maintenance Concept . 123.6.3 Quantitative Maintainability . 123.6.4 Maintainability Verification 133.6.5 Ground Support Equipment 133.7 Structural Characteristics 133.7.1 Strength . 133.7.2 Damage Tolerance . 133.7.3 Loads Specification . 133.7.4 Operating Life 163.8 Design and Construction . 1
10、73.8.1 Sealing 173.8.2 Bearings 173.8.3 Lubrication. 173.9 Materials, Processes, Assembling and Parts . 183.9.1 Materials 183.9.2 Metals 183.9.3 Metal Characteristics 183.9.4 Castings and Forgings 183.9.5 Material Quality Control 183.9.6 Conductivity Tests . 193.9.7 Shot Peen . 193.9.8 Use of Standa
11、rd Parts . 193.9.9 Processes . 193.9.10 Assembling 193.10 Environmental Conditions . 203.10.1 Environmental Criteria 203.10.2 Exposure . 213.11 Identification and Marking . 213.11.1 Identification 213.11.2 Marking and Serialization 213.12 Workmanship 213.12.1 Quality . 213.12.2 Physical Defect Inspe
12、ction 213.12.3 Interchangeability 213.13 Safety 213.14 Documentation 213.14.1 Analysis Requirements . 213.14.2 Performance 213.14.3 Moving Parts Clearance 223.14.4 Selection of Materials and Minimum Size of Structural Members 223.14.5 Qualification Analysis 223.14.6 Stress and Fatigue Analysis . 223
13、.14.7 Thermal Analysis . 223.15 Redundant Load Path Requirements . 223.15.1 Output Attachment Redundant Load Path Requirements 223.15.2 Input Attachment Redundant Load Path Requirements . 223.15.3 Redundant Load Path Requirements Within Output Member(s) 223.15.4 Redundant Load Path Requirements With
14、in Input Member(s) . 223.15.5 Redundant Load Path Requirements at Interface of Input and Output Member(s) 223.16 Multiple-Extend (Telescoping) Actuators 233.16.1 Actuation Type 23SAE INTERNATIONAL ARP5812 Page 2 of 30_3.16.2 Backlash (Free play) . 233.16.3 Mechanical Efficiency . 233.16.4 Stroke (Tr
15、avel) Apportionment 233.17 Drawings . 243.18 Key Characteristics Definition . 243.19 Robustness . 243.20 Fault Enunciation 243.21 Explosion Proofness . 244. DEVELOPMENTAL TESTS 244.1 General . 244.2 Developmental Test Procedure 244.3 Developmental Test Reports 244.4 Developmental Test Failures 255.
16、QUALITY ASSURANCE PROVISIONS 255.1 General . 255.2 Test Requirements and Options . 255.3 Classification of Tests . 255.3.1 Acceptance Tests . 255.3.2 Qualification Tests. 255.3.3 Qualification Approval of Similar Units 255.3.4 Test Matrix 265.4 Test Procedures 265.4.1 Acceptance Test . 265.4.2 Quali
17、fication Test Procedure . 265.5 Test Conditions . 265.5.1 Environmental Conditions . 265.5.2 Test Instruments . 265.5.3 Test Fixtures . 265.6 Acceptance Tests . 265.6.1 General . 265.6.2 Examination of Product . 275.6.3 Backlash (Free play) . 275.6.4 No Load Torque 275.6.5 Operation Under Load 275.6
18、.6 Weight . 275.6.7 Rejection and Retest . 275.7 Qualification Tests and Test Methods 275.7.1 Sampling and Tests 275.7.2 Pre Test Inspection . 285.7.3 Acceptance Tests . 285.7.4 Altitude 285.7.5 Humidity 285.7.6 Fungus 285.7.7 Salt Fog . 285.7.8 Sand and Dust 285.7.9 Acceleration 285.7.10 Shock 285.
19、7.11 Vibration 285.7.12 Endurance . 285.7.13 Limit Load 295.7.14 Ultimate Load 295.7.15 Structural Tests . 295.7.16 Extreme Temperature . 295.7.17 Duty Cycle Test . 295.8 Reliability Tests . 295.9 Test Reports, Design Changes and Data . 295.9.1 Qualification Test Reports . 295.9.2 Subsequent Design
20、Changes . 305.10 Qualification Test Failures 30SAE INTERNATIONAL ARP5812 Page 3 of 30_6. PREPARATION FOR DELIVERY . 306.1 Preservation and Packaging . 306.2 Marking of Shipments . 307. NOTES 307.1 Revisions . 30FIGURE 1 GRAPHICAL FORMAT OF OPERATIONAL LOADS . 14FIGURE 2 EXAMPLES OF REDUNDANT LOAD PA
21、TH DESIGNS 23FIGURE 3 EXAMPLE OF MULTIPLE-EXTEND (2-STAGE) TELESCOPING BALL SCREW ASSEMBLY 24TABLE 1 TABLE FORMAT OF OPERATIONS LOADS 14TABLE 2 TABLE FORMAT OF “AXIAL LOAD VERSUS PERCENT OPERATION” . 14TABLE 3 ENVIRONMENTAL CRITERIA . 20SAE INTERNATIONAL ARP5812 Page 4 of 30_1. SCOPE This SAE Aerosp
22、ace Recommended Practice (ARP) establishes design, manufacturing performance and test requirements for linear mechanical actuators intended to be used for linear motion applications in response to manual or automatic power control system inputs. It is applicable, but not confined to, ball screws, sl
23、iding contact screws, roller screws, helical splines, rack and pinion assemblies, and skewed roller actuators. It is a reference for preparing detail specifications for mechanical actuators compatible and applicable to military or commercial aircraft systems. 2. REFERENCES 2.1 Applicable Documents T
24、he following publications form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this docume
25、nt and 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 Commonwealth Drive, Warrendale, PA 150
26、96-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AS567 Safety Cable, Safety Wire, Key Washers, and Cotter Pins for Propulsion Systems, General Practices for Use of ARP4386 Terminology and Definitions for Aerospace Fluid Power, Actuation and Control Techno
27、logies AS4536 Safety Cable Kit Procurement Specification and Requirement for Use ARP4752 Aerospace - Design and Installation of Commercial Transport Aircraft Hydraulic Systems AS4941 Aerospace - General Requirements for Commercial Aircraft Hydraulic Components ARP5311 Aerospace - Interface Definitio
28、n for Mechanical Actuation Subsystems AS8775 Hydraulic System Components, Aircraft and Missiles, General Specification forAS8879 Screw Threads - UNJ Profile, Inch Controlled Radius Root with Increased Minor Diameter AS94900 Aerospace - Flight Control Systems - Design, Installation and Test of Pilote
29、d Military Aircraft, General Specification for AMS2419 Plating, Cadmium-Titanium AMS2430 Shot Peening, Automatic AMS2432 Shot Peening, Computer Monitored AMS2460 Plating, Chromium AMS2770 Heat Treatment of Wrought Aluminum Alloy Parts SAE INTERNATIONAL ARP5812 Page 5 of 30_AMS-C-8837 Coating, Cadmiu
30、m (Vacuum Deposited) 2.1.2 ANSI Publications Available from American National Standards Institute, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org.ANSI/NCLS Z540.3 Calibration Laboratories and Measuring and Test Equipment - General Requirements 2.1.3 ASME Publications A
31、vailable from American Society of Mechanical Engineers, 22 Law Drive, P.O. Box 2900, Fairfield, NJ 07007-2900, Tel: 973-882-1170, www.asme.org.ASME Y14.38 Abbreviations and Acronyms 2.1.4 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA
32、 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM E 1417 Standard Practice for Liquid Penetrant Testing ASTM E 1444 Standard Practice for Magnetic Particle Testing Examination ASTM E 1742 Standard Practice for Radiographic Examination 2.1.5 ISO Publications Available from American National Standards
33、 Institute, 25 West 43rd Street, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org.ISO-10012 Measurement Management Systems - Requirements for Measurement Processes and Measuring Equipment2.1.6 NAS Publications Available from Aerospace Industries Association, 1000 Wilson Boulevard, Suite 1700
34、, Arlington, VA 22209-3928, Tel: 703-358-1000, www.aia-aerospace.org.NASM 33540 Safety Wiring, Safety Cabling, Cotter Pinning, General Practices for2.1.7 RTCA Publications Available from Radio Technical Commission for Aeronautics Inc., 1828 L Street, NW, Suite 805, Washington DC 20036, Tel: 202-833-
35、9339, www.rtca.org.RTCA DO160 Environmental Conditions and Test Procedures for Airborne Equipment 2.1.8 U.S. Government Publications 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.da
36、ps.dla.mil/quicksearch/.MIL-STD-129 Military Marking for Shipment and Storage MIL-STD-130 Identification Marking of U.S. Military Property SAE INTERNATIONAL ARP5812 Page 6 of 30_MIL-STD-810 Environmental Engineering Considerations and Laboratory TestsMIL-STD-889 Dissimilar Materials MIL-STD-1537 Ele
37、ctrical Conductivity Test for Verification of Heat Treatment of Aluminum Alloys, Eddy Current MethodMIL-STD-2073-1 Standard Practice for Military Packaging MIL-I-8500 Interchangeability and Replaceability of Component Parts for Aerospace Vehicles MIL-A-8625 Anodic Coatings for Aluminum and Aluminum
38、Alloys MIL-PRF-32014 Grease, Aircraft and Instrument MIL-STD-31000 Technical Data Packages MIL-DTL-32119 Coatings, Electroless Nickel, Special ApplicationsMIL-HDBK-275 Guide for Selection of Lubricants, Fluids, and Compounds MIL-HDBK-831 Test Reports, Preparation of MIL-HDBK-838 Lubrication of Milit
39、ary Equipment JSSG-2006 Aircraft Structures - DOD Joint Service Specifications Guide DOT/FAA/AR-MMPDS The Metallic Materials Properties Development and Standardization Handbook (Available from Battelle, 505 King Ave. Columbus, OH 43201, Tel: 614-424-6496, www.MMPDS.ORG ) 2.2 Definitions For definiti
40、on of terms not defined below see SAE ARP4386. 2.2.1 LINEAR MECHANICAL ACTUATORS Linear mechanical actuators are mechanical transformers capable of converting rotary shaft input to linear outputs (or vice-versa). These actuators are configured to primarily transmit axial load but may also be designe
41、d to support some amount of transverse (side) loads. 2.2.2 EXTERNAL LOADS Loads imposed on the actuator output (they vary generally as a function of surface displacement, rate of displacement, and operating conditions). 2.2.3 LIMIT LOAD The maximum load to be expected in service (i.e., the highest l
42、oad expected in normal operations). The structure must be able to support limit loads without detrimental, permanent deformation. At any load up to limit loads, the deformation may not interfere with safe operation.2.2.4 ULTIMATE LOAD Ultimate load is the limit load multiplied by a safety factor. Th
43、e structure must be able to support ultimate loads without failure for a duration to be specified by the procuring organization.SAE INTERNATIONAL ARP5812 Page 7 of 30_2.2.5 STIFFNESS Actuator stiffness is the ratio of the applied load to the load path deflection expressed N/mm (lbf/in). Unless other
44、wise specified by the design specification, the deflection for static stiffness should be considered the elastic load path unidirectional deflection excluding free play. The deflection for dynamic stiffness should be considered one half the total bi-directional deflection including free play. Deflec
45、tion measurements are to be taken from the input shaft to the output excluding connections/couplings with sufficient loading to be on the nominal linear portion of the elastic load deflection curve. 2.2.6 ACCEPTANCE TESTS Those tests performed on production components to assure the continuance of th
46、e quality of that component. 2.2.7 DEVELOPMENTAL TESTS Tests are performed on initial unit(s) to provide a basis for preliminary design approval to proceed with the production program.2.2.8 QUALIFICATION TESTS Tests are performed on production configuration actuators to confirm full compliance with the requirements of the detail specification.2.2.9 LOSS OF FUNCTION Considered damage resulting in fracture or failure of a particular component sufficient to prevent the unit from meeting the specified performance, strength or reliability requirements. When a c
