SAE AIR 5866-2008 An Assessment of Planar Waves《平面波的评估》.pdf
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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 there
2、from, 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 2008 SAE International All rights reserved. No part of this publication m
3、ay 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: 724-776-4970 (outside USA)
4、 Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org AIR5866 AEROSPACE INFORMATION REPORT Issued 2008-02 An Assessment of Planar Waves RATIONALE Due to the needs of the industry, this document has been upgraded to an AIR (Aerospace Information Report) from an ARD (Aero
5、space Research Document) status and was formerly catalogued as ARD500026. Most of the report is unchanged since the material is as useful now as it was when first published in 1995. A few paragraphs have been updated to reflect knowledge gained on recent aircraft programs. Other changes reflect cons
6、istency with more recently adopted definitions, and minor editorial and typographical corrections. However in the course of this upgrade, it became apparent that the original figures were no longer available nor were the means to recreate them. In some cases, figures have been redrawn. For the remai
7、ning figures (and tables), the best available copy was scanned. The committee apologizes for any lack of clarity produced by this procedure. FOREWORD As applications for turbine engines have become more sophisticated and the operating conditions more severe, inlet planar time-variant full-face total
8、-pressure variations, usually accompanied by spatial total pressure distortion, can become a significant destabilizing factor. The SAE S-16 Turbine Engine Inlet Flow Distortion Committee has recognized the need for guidelines and procedures that would address inlet planar waves and the desirability
9、of documentation similar to SAE documents ARP1420 and AIR1419 that were written for inlet spatial total-pressure distortion. This Aerospace Information Report (AIR) brings together information and ideas that are required to address the planar wave problem. A common industry practice has yet to be es
10、tablished. SAE AIR5866 - 2 - TABLE OF CONTENTS 1. SCOPE 4 2. REFERENCES 4 2.1 Applicable Documents 4 2.2 Other Applicable References 4 2.3 Related Publications . 5 2.4 List of Nomenclature and Symbols . 8 3. SUMMARY 9 4. INTRODUCTION. 9 5. PROBLEM ASSESSMENT. 10 5.1 Case History Studies 11 5.1.1 Sys
11、tem “A” 11 5.1.2 System “B” 14 5.2 Combined Spatial Pressure Distortion and Planar Waves . 19 6. APPROACH TO PLANAR WAVE METHODOLOGY . 19 6.1 Categorization of Inlet Planar Waves . 22 6.2 Determination of Engine Response to Planar Waves 24 6.2.1 Engine or Compression System Tests . 24 6.2.2 Computer
12、 Simulations. 24 6.2.3 Analytical Solutions. 25 6.3 Planar Wave Methodology Approaches . 30 6.3.1 Computer Simulation Prediction . 30 6.3.2 Sensitivity Analysis 30 6.4 Combined Spatial Total-Pressure Distortion and Planar Waves 33 6.4.1 Spatial Distortion. 33 6.4.2 Stability Margin 36 6.4.3 Stabilit
13、y Margin Accounting. 37 7. TESTING REQUIREMENTS 44 7.1 Inlet Testing. 45 7.1.1 Inlet Development Tests . 45 7.1.2 Engine and Compression System Testing 48 7.1.3 Instrumentation . 49 7.1.4 Data Processing and Screening . 49 7.2 Compression System Component Testing . 49 7.2.1 Planar Wave Generators 51
14、 7.2.2 Compression System Modeling 53 7.3 Verification Testing 53 8. CONCLUSIONS AND RECOMMENDATIONS 53 8.1 Conclusions. 53 8.2 Recommendations 53 APPENDIX A DOCUMENT REVIEW MATERIAL. 55 APPENDIX B ANALYTICAL MODEL FOR ESTIMATING COMPRESSOR SENSITIVITY TO A SINUSOIDAL PLANAR WAVE 56 APPENDIX C ELEME
15、NTS OF METHODOLOGY VALIDATION. 63 FIGURE 1 LOCAL FLOW SEPARATION ON INLET RAMP DURING OFF DESIGN OPERATION AT LOW AIRFLOW. 12 FIGURE 2 WIND TUNNEL/FLIGHT TEST COMPARISON OF PLANAR WAVES, MACH 0.85. 12 FIGURE 3 PLANAR WAVE AMPLITUDE 13 FIGURE 4 SPATIAL DISTORTION CHARACTERISTICS. 14 FIGURE 5 ECS PREC
16、OOLER ASSEMBLY. 15 FIGURE 6 RESONANCE CHARACTERISTICS IN ECS SCOOP INLET 15 FIGURE 7 EFFECT OF GEAR WAKE INGESTION ON PLANAR WAVES 16 FIGURE 8 COMPRESSOR INLET PLANAR WAVE EXPERIENCE AS A FUNCTION OF FLIGHT PROFILE FOR IDLE AND BELOW IDLE AIRFLOWS 16 FIGURE 9 COMPRESSOR INLET PRESSURE SIGNATURES . 1
17、7 SAE AIR5866 - 3 - FIGURE 10 COMPRESSOR INLET PLANAR WAVE EXPERIENCE AS A FUNCTION OF ENGINE SPEED AND INLET MASS FLOW RATIO . 18 FIGURE 11 WAVEFORMS OF COMPRESSOR-FACE AVERAGE TOTAL-PRESSURE AND DISTORTION FACTORS . 20 FIGURE 12 POWER SPECTRAL DENSITY PLOTS OF WAVEFORMS 21 FIGURE 13 TIME-VARIANT D
18、ISTORTION, INLET PLUS ENGINE TESTS . 22 FIGURE 14 CATEGORIZATION OF INLET DATA 23 FIGURE 15 ENGINE AND COMPRESSION SYSTEM COMPUTER SIMULATION CONSIDERATIONS . 25 FIGURE 16 PLANAR-WAVE SENSITIVITY, SIMPLE ILLUSTRATIVE ANALYSIS 27 FIGURE 17 PLANAR-WAVE SENSITIVITY, AMPLITUDE TO STALL 27 FIGURE 18 INLE
19、T PLANAR PRESSURE WAVE - PREDICTED AMPLITUDE TO CAUSE STALL, SINE WAVES 28 FIGURE 19 PERIODIC PLANAR WAVES, INLET TOTAL-PRESSURE DISTORTION (EXAMPLE) . 29 FIGURE 20 PERIODIC PLANAR WAVES, FAN-STABILITY-MARGIN VARIATION (EXAMPLE) 29 FIGURE 21 PERIODIC PLANAR WAVES, HIGH-PRESSURE-COMPRESSOR STABILITY-
20、MARGIN VARIATION (EXAMPLE) 30 FIGURE 22 DYNAMIC DISTORTION SENSITIVITY VERSUS FREQUENCY - N/ = 100% . 31 FIGURE 23 FAN-COMPONENT PLANAR-WAVE SENSITIVITY 31 FIGURE 24 CATEGORIZATION OF ANALYTICAL TECHNIQUES 34 FIGURE 25 RING CIRCUMFERENTIAL DISTORTION (ONE-PER-REV-PATTERN) 35 FIGURE 26 RADIAL DISTORT
21、ION PATTERN 35 FIGURE 27 STABILITY MARGIN DEFINITION . 36 FIGURE 28 COMBINED PLANAR WAVE AND SPATIAL DISTORTION 39 FIGURE 29 COMPRESSOR OPERATING-POINT-EXCURSION PLANAR-WAVE SINUSOID. 39 FIGURE 30 AIR-INTAKE TIME-VARIANT SPATIAL DISTORTION WITH EMBEDDED PLANAR WAVE . 41 FIGURE 31 COMPOSITE DISTORTIO
22、N DESCRIPTOR-OVERALL FACE 42 FIGURE 32 COMPOSITE DESCRIPTOR, DPCOM. 43 FIGURE 33 PLANAR WAVE CONSIDERATIONS FOR INLET DEVELOPMENT TESTS . 46 FIGURE 34 TYPICAL LIMITED PROBE ARRANGEMENTS. 47 FIGURE 35 PLANAR WAVE INLET DATA PROCESS . 50 FIGURE 36 DYNAMIC DISTORTION SENSITIVITY VERSUS FREQUENCY - N/ =
23、 100% . 51 FIGURE 37 ROTATING PERFORATED DISK (GE AND NASA) 51 FIGURE 38 ROTATING SPOKES (AEDC AND U.K.) . 52 FIGURE 39 AIRJET DISTORTION GENERATOR (AEDC AND NASA) . 52 TABLE 1 LIST OF NOMENCLATURE AND SYMBOLS 8 SAE AIR5866 - 4 - 1. SCOPE “An Assessment of Planar Waves” provides background on some o
24、f the history of planar waves, which are time-dependent variations of inlet recovery, as well as establishing a hierarchy for categorizing various types of planar waves. It further identifies approaches for establishing compression-component and engine sensitivities to planar waves, and methods for
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