ESDU AZ Index: RREU
 Accumulation of rainfall on runway surfaces, 19005
 see also
 Radiation Heat Transfer
 Calculation of Runway Temperature from Ambient Pressure and Ambient Temperature, TM 188
 Resistance of Various Dry Rubbing Bearing Materials to
 carbon, polymer, thermoset, solid lubricant impregnated metal, 87007
 Resistance of Various Synthetic Lubricants to, 94020
 Solar

 see
 Solar Heating
 Sound

 see
 Noise
 Use in Temperature Measurement
 see also
 Heat Transfer
 Thermal Emissivity
 Use in NonDestructive Examination for Flaws, 91027
 Planar Shapes and Sections With/Without Holes
 Drains, Gutters and Windscreen Wipers etc
 guidance on contribution to aircraft drag, 94044
 see also
 Standard Fatigue Loading Sequences
 Method of Cycle Definition, 95006
 Wave Drag of Rectangular Planform, 71018
 Use With Logic Functions to Fit Discontinuous Curves, 01011
 see
 Impact Pressure
 see also
 Turbulence Near Ground
 Introduction to Concepts and Definitions
 basic notions and types of processes (ergodic, nonstationary, stationary), 83041
 conditional probability function, 83041
 correlation functions, 83041
 Fourier transform, 83041
 probability density and distribution functions, 83041, 92040
 spectral density, 83041
 Effects of Wind on Optimum Cruise Speed, 73018
 Introduction to Estimation, 73018, 80026
 PistonEngine Aircraft
 analysis of measured data, 80009
 estimation for various cruise flight conditions, 75018
 estimation of range (time, fuel) lost due to climb and descent, 77015
 estimation of stage length (time, fuel), 75018, 77015
 reduction of measured data, 80009, PERF RP1/0, PERF RP1/3, PERF RP2/0
 Simplified Treatment for Civil Transport
 to show effect of using winglets from wing design initiation, 98013
 Turbine Helicopters
 performance analysis, 74042, 80009
 TurboFan and TurboJet Aircraft

 see also
 Buoyancy
 Gravitational Acceleration
 analysis of measured data, 70020, 70021, 70022, 80009
 comparison of flight paths in cruiseclimb and range corrections for four aircraft, 73019
 correction of level flight data to cruiseclimb, 73019
 estimation for cruiseclimb, 73019
 estimation for various cruise flight conditions, 73019
 estimation of range (time, fuel) lost due to climb and descent, 74018
 estimation of stage length (time, fuel), 73019, 74018, 74041
 example of calculation of stage length, 74041
 flight path followed and engine setting during cruiseclimb, 73019
 reduction of measured data, 80009, PERF RJ2/0
 use of expression for sfc with or without thrust inclination angle, 73019
 TurboProp Aircraft
 estimation for various cruise flight conditions, 75018
 estimation of range (time, fuel) lost due to climb and descent, 77015
 estimation of stage length (time, fuel), 75018, 77015
 reduction of measured data, 80009, PERF RT1/0, PERF RT1/3
 Method of Cycle Definition, 95006
 see also
 Flight Path Optimisation
 Analysis of Flight Measurements
 pistonengine aircraft, 70023
 turbofan and turbojet aircraft, 70020, 70021, 70023, 80009, PERF RJ1/2
 Calculation of Variability of TakeOff Climb Gradient From Known Contributing Variabilities
 as illustration of use of statistical techniques, 91020
 Constant Calibrated or Equivalent Airspeed or Mach Number
 acceleration in OffStandard or Standard Atmospheres, 81046
 Correction of Measured for Wind Gradient, 70023
 Determination of Ceiling From
 program using known drag and thrust characteristics, 00031, 00032, 00033, 00034, 00035, 00036, 00037, 00038, 00039
 Effect of Small Changes in Density, Drag, Weight, Speed, Thrust (or Power), 94039
 Estimation in Steady Speed Climb
 from simplified equations, 80032, 92019
 value at minimum drag speed, 92019
 Estimation in Steady Speed Climb or Accelerated Climb
 aircraft performance program, ESDUperf
 using known drag, lift and thrust characteristics, 00031, 00032, 00033, 00034, 00035, 00036, 00037, 00038, 00039
 Flight at Constant Pressure, 70023, 79018
 Introduction to Data Items on Estimation, 80026
 Maximum in Steady Speed Climb for PropellerPowered Aircraft
 graphical correlation for range of aircraft aerodynmics and use to estimate values, 92019
 Reduction of Flight Measurements
 pistonengine aircraft, 80009, PERF RP1/0, PERF RP1/2, PERF RP2/0
 turbofan and turbojet aircraft, 80009, PERF RJ2/1
 turboprop aircraft, 80009, PERF RT1/0, PERF RT1/2
 Speed for Maximum, 92019
 Statistical Analysis of Second Segment Climb Flight Tests
 to show effect on scheduled performance of small airframe changes, 93023
 Unstiffened ThinWalled CircularCylindrical Shells
 natural frequencies and mode shape, 78004
 see
 Air
 Selection From Clearance, Contact or Membrane Types, 83031
 Selection of Material for Contact Type
 cost, maintenance and reliability, 83031
 discussion of friction, leakage, life and lubrication, 83031
 fluid compatibility, 83031
 maximum sealing pressure, sliding speed and temperature, 83031
 mechanical considerations, 83031
 requirements for component surface finish, 83031
 Selection of Type of Contact Seal
 moulded O, U or Vring or packed, 83031
 piston rings, 83031
 Definition, 69009, 89022
 Effect of Changes on Stresses in Structural Components
 General Discussion, 69009
 Variation With Local Mach Number and Temperature
 laminar boundary layer, AERO W.S.00.03.18
 turbulent boundary layer, AERO W.S.00.03.18
 Aerodynamic Characteristics

 see
 Cavities
 Excrescences
 Various InPlane Loadings
 stress concentration data, 80027
 Dynamic Response to Turbulence and Wind
 Mean Forces, Moments and Pressures Due to Wind or Other Fluid Flows
 Analysis of Data, 72014
 Centre of Pressure of SharpEdged Low Aspect Ratio
 subsonic flow to high angles of attack below stall, 95022
 Normal Force and Pitching Moment on SharpEdged Low Aspect Ratio
 supersonic flow to high angles of attack, 90013
 Normal Force on SharpEdged Low Aspect Ratio
 subsonic flow to high angles of attack below stall, 93034
 Rolling Moment Due to Rolling at Supersonic Speeds
 effect of interference from cylindrical body, AERO A.S.06.03.02
 used in three or fourwing arrangements, AERO A.S.06.03.01, AERO A.S.06.03.03
 Transonic DragRise, AERO W.S.02.03.09
 Wave Drag for Various Aerofoil Sections, 71018
 Design Considerations, 92016
 Sources of Fluctuations, 92016
 Techniques Available
 adding dyad, springs and/or dampers, 92016
 cost, design and space implications of choice, 92016
 effect on joint forces and balance, 92016
 link mass reduction and optimisation, 92016
 principal use of each method and use in combination, 92016
 use of flywheel, 92016
 Between Coupled Plates
 By Ground
 see also
 Condensers
 Advantages and Limitations of Type, 89038
 Condensate Local and Mean Heat Transfer Coefficient
 recommended prediction methods for various Reynolds number ranges, 89038
 Design or Performance Rating Procedure
 single or multicomponent flows, 89038
 Discussion of Available Data on Pressure Drop, 89038
 Flooding Mechanisms, 89038
 Prediction of Flooding Vapour Velocity
 accuracy of correlation, 89038
 effect of tube end cut and tube inclination, 89038
 BackUp Insulating Materials, 80041
 Bibliography of ASME, BS and DIN Standards, 80041
 Calculation of SteadyState Heat Transfer Through Combinations, 80041
 Cold Crushing Strength
 method of measurement, 80041
 values for various materials and forms, 80041
 Factors Involved in Selection, 80041
 Fixing and Mechanical Support Systems, 80041
 Glossary of Terms, 80041
 Heat Transfer Mechanism in Fibrous or Porous Materials, 80041
 List of Manufacturers and Their Addresses, 80041
 Maximum Service Temperature
 guidance for various materials and forms, 80041
 Mechanical Properties
 methods of measurement and values for various materials, 80041
 Thermal Conductivity
 effect of surrounding gas, 80041
 methods of measurement and values for various materials and forms, 80041
 Thermal Diffusivity
 effect on time to reach equilibrium, 80041
 Thermal Expansion
 values for various materials and forms, 80041
 Types of Forms and Materials Available, 80041
 Typical Arrangement of Combinations, 80041
 Use of Fibrous Materials, 80041
 Linear Two Variable (Least Squares)
 confidence intervals for regression relationship, 91017
 correlation coefficient, 91017
 derivation of regression relationship and manual calculation, 91017
 example calculation using measurements of ground run and approach speed, 92021
 example of accuracy assessment of resulting correlation of experimental data, 98026
 example of use of confidence coefficient to establish significance of correlation, 92021
 test for significance of correlation and table of statistics, 91017
 test for significance of regression relationship, 91017
 variance of ordinand about regression line, 91017
 Multiple Linear
 derivation of regression relationship, 91017
 example calculation using airborne time, speeds and rates of descent in landing flare, 92022
 see
 Beams of Sandwich Construction
 Curved Sandwich Panels (Cores of Negligible Flexural Stiffness)
 Curved Speciallyorthotropic Rectangular Plates
 Curved Unbalanced Laminated Rectangular Plates
 Faceplate Wrinkling
 Flat Sandwich Panels (Cores of Negligible Flexural Stiffness)
 Flat Speciallyorthotropic Rectangular Plates
 Flat Speciallyorthotropic Square Plates
 Flat Strips of Orthotropic Materials
 Flat Unbalanced Laminated Rectangular Plates
 Laminated Construction Using Composites
 Response of Lightweight Structures
 Sandwich Panels and Plates
 Struts of Sandwich Construction
 see also
 Circular Frames Supported By A Shell
 Stress Distribution Under Bending, STRUCT 00.06.01
 see
 Damping Ratio
 Lubrication Systems
 VentilatedWall With Plenum Chamber
 prediction of first frequency, 90005
 see also
 Buffeting
 Crossflow Heat Exchangers
 Dynamic Overswing
 Dynamic Stability
 Fatigue Loading
 Frequency
 Frequency Response
 Indicial Aerodynamics
 Lateral Stability and Response
 Linear Systems
 Longitudinal Stability and Response
 Response of Buildings and Structures
 Response of Buildings and Structures To Atmospheric Turbulence
 Response of Buildings and Structures To Vortex Shedding
 Response of Lightweight Structures
 Rolling
 Sampleddata Systems
 Shellandtube Heat Exchangers
 Unsteady Aerodynamics
 Anemometric Data Measuring System in Aircraft
 Planar Flexible LiquidFilled Piping System to Transient Pressures
 program for liquid pressure and velocity and structural behaviour at junction
 Rotors in Journal Bearings

 see
 Rotors
 Structural Elements

 see
 Box Structures
 Curved Rectangular Plates
 Curved Sandwich Panels (Cores of Negligible Flexural Stiffness)
 Cylinders of Circular Section (Strength and Vibration)
 Flat Panels in General
 Flat Rectangular Plates
 Flat Sandwich Panels (Cores of Negligible Flexural Stiffness)
 Flat Speciallyorthotropic Rectangular Plates
 Flat Speciallyorthotropic Square Plates
 Temperature Measuring System in Aircraft
 ThreeDimensional LiquidFilled Flexible Unbranched Piping System With Rigid Supports
 program for coupled response to transient liquid pressure change, 93031
 Aerodynamic Damping, 83009, 87035, 88019, 89045
 Expressions for ModeGeneralised Inertias, 91001
 Expressions for ModeGeneralised Masses, 91001
 Galloping
 approximate estimation of wind speed for onset and maximum amplitude, 91010
 characteristics of response of a cylinder in a wake, 79025
 definition of hard and soft oscillators, 91010
 definition of stall and wake, 91010
 discussion of origins, 77032, 91010
 full equations for maximum amplitude, 91010
 full equations for wind speed for onset, 91010
 methods of alleviating, 77032
 rate of change of force with wind incidence for use in calculation, 93013
 regions of interference between two cylinders, 79025
 Generalised Masses in Bending, 91001
 Introduction to Behaviour Due to Turbulence and Wind
 calculation procedure for deterministic and probabilistic inputs, 77032
 discussion of added mass term and of interference from nearby bodies, 77032
 discussion of vortex shedding, 77032, 96030
 guide to significance of various types of response, 77032
 introduction to methods of calculation, 77032
 methods of alleviating, 77032, 83009, 96030
 methods of model testing, 77032
 similarity parameters in model testing, 77032
 use of normal mode analysis for calculation, 77032, 83009, 91001
 Natural Frequency
 approximate equation for columns, stacks and towers, 91001
 approximate equation for tall buildings, and accuracy, 91001
 mode shape functions for cantilevers, and single and twospan beams, 91001
 multispan beams, 91001
 singlespan beams, 91001
 treatment of additional masses and of nonuniform mass distribution, 91001
 Pairs of CircularSection Cylinders Normal to Flow
 characteristics of buffeting, flutter, galloping and jet switching, 79025
 discussion of parameters affecting, 79025
 methods of alleviating, 79025
 regions of interference between, 79025
 sources of data and their content, 79025
 typical characteristics when closely or widely spaced, 79025
 use of existing data for prediction, 79025
 variation in specific case with incidence, spacing and velocity, 79025
 Small Groups of CircularSection Cylinders Normal to Flow
 detailed presentation of data extracted from literature, 79025
 general discussion of factors affecting, 79025
 methods of alleviating, 79025
 sources of data, 79025
 use of existing data for prediction, 79025
 Structural Damping
 approximate data, 77032, 87035, 88019, 91001, 96031
 estimation for first translational modes of tall buildings, 83009, 91001
 Typical Ranges of Structural Density, 91001
 see also
 Response of Buildings and Structures
 Accelerations, Deflections, Loading Due to AcrossWind Components for All Types of Structures
 horizontal or vertical, cantilevered or fixed at both ends, 89049
 program for constant or varying width, nonuniform or uniform mass, 92036
 simple calculation method, 89049
 Accelerations, Deflections, Loading Due to AlongWind Components for Single CircularSection Cylinder
 horizontal or vertical, cantilevered or fixed at both ends, 87035
 program for constant or varying width, nonuniform or uniform mass, 92036
 simple calculation method, 87035
 Accelerations, Deflections, Loading Due to AlongWind Components for Structures Near LineLike
 horizontal or vertical, cantilevered or fixed at both ends, 87035
 program for constant or varying width, nonuniform or uniform mass, 92036
 simple calculation method, 87035
 Accelerations, Deflections, Loading Due to AlongWind Components for Structures Not LineLike
 program for constant or varying width, nonuniform or uniform mass, 92036
 simple calculation method, 88019
 Deflections Due to AcrossWind Components for Single CircularSection Cylinder
 horizontal or vertical, cantilevered or fixed at both ends, 96031
 parallelsided, stepped, tapered, on conical base or with aerodynamic spoilers, 96031
 Rate of Change of Force With Wind Incidence for Use in Calculation
 buildings, bridge decks and beam sections, 93013
 see also
 Response of Buildings and Structures
 Deflections of Single Circular or PolygonalSection Cylinder at Any Angle to Wind
 cantilevered or fixed at both ends, 96030, 96031
 comparison of predictions with experimental results, 96030
 derivation of parameters used in method, 96030
 fitted with a strake to reduce, 96030, 96031
 including effect of acrosswind buffeting, 96030, 96031
 maximum and rms, 96030, 96031
 methods of alleviating, 96030
 mounted in a duct or windtunnel, 96030, 96031
 natural or simulated turbulence levels (in a windtunnel), 96030, 96031
 parallelsided, stepped or tapered, 96030, 96031
 percentage of time during which response is narrowband, 96030, 96031
 program for broad and narrowband response running in Excel, 96031
 smooth or rough surfaces, 96030, 96031
 uniform or shear flow, 96030, 96031
 Deflections of Single MultiSided Section Structure, Horizontal or Vertical and Symmetrical to Crossflow
 calculation procedure, 90036
 cantilevered or fixed at both ends, 90036
 maximum and rms, 90036
 parallelsided, stepped or tapered, 90036
 see also
 Statistical Energy Analysis
 Coupling Loss Factor
 connected plates, 98020, 99009
 Discussion of General Features of Dynamic Response, 97033
 choice of global or local model of structure, 97033
 Discussion of Types of Excitation
 effect on choice of model of structure, 97033
 spatial or temporal characteristics, 97033
 Example of Calculation for Simple Structure
 comparison of results from finite element analysis and statistical energy analysis, 99009
 Methods of Modelling Structure
 advantages, features and limitations, 97033
 boundary element method, 97033
 decision tree chart to guide in choice of appropriate method, 97033
 dynamic stiffness method, 97033
 examples illustrating selection process for appropriate method, 97033
 finite element analysis, 97033
 global trial functions, 97033
 modal interaction analysis, 97033
 outline of mathematical modelling of various methods, 97033
 statistical energy analysis, 97033
 Solution Procedure
 choice between frequency and time domains, 97033
 Sound Power Radiated by Dynamically Excited Flat Plates

 see
 Noise
 Transmission of Vibrational Power Between Coupled Curved or Flat Plates
 efficiency of direct coupling or coupling through a beam, 98020
 Typical Fuselage Noise Transmission Loss Characteristics, 02020
 dependence of transmission loss behaviour on frequency, 02020
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