ESDU A-Z Index: R-REU
- Use of to Determine Pressure Error Correction Coefficient, 20006
- 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 Non-Destructive Examination for Flaws, 91027
- Planar Shapes and Sections With/Without Holes
- Drains, Gutters and Windscreen Wipers etc
- guidance on contribution to aircraft drag, 94044
- Accumulation of rainfall on runway surfaces, 19005
- 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, non-stationary, stationary), 83041
- conditional probability function, 83041
- correlation functions, 83041
- Fourier transform, 83041
- probability density and distribution functions, 83041, 92040
- spectral density, 83041
- Force Limited Testing, 19006
- Effects of Wind on Optimum Cruise Speed, 73018
- Introduction to Estimation, 73018, 80026
- Piston-Engine 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
- Turbo-Fan and Turbo-Jet Aircraft
-
- see also
- Buoyancy
- Gravitational Acceleration
- analysis of measured data, 70020, 70021, 70022, 80009
- comparison of flight paths in cruise-climb and range corrections for four aircraft, 73019
- correction of level flight data to cruise-climb, 73019
- estimation for cruise-climb, 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 cruise-climb, 73019
- reduction of measured data, 80009, PERF RJ2/0
- use of expression for sfc with or without thrust inclination angle, 73019
- Turbo-Prop 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
- piston-engine aircraft, 70023
- turbo-fan and turbo-jet aircraft, 70020, 70021, 70023, 80009, PERF RJ1/2
- Calculation of Variability of Take-Off Climb Gradient From Known Contributing Variabilities
- as illustration of use of statistical techniques, 91020
- Constant Calibrated or Equivalent Airspeed or Mach Number
- acceleration in Off-Standard 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
- 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 Propeller-Powered Aircraft
- graphical correlation for range of aircraft aerodynmics and use to estimate values, 92019
- Reduction of Flight Measurements
- piston-engine aircraft, 80009, PERF RP1/0, PERF RP1/2, PERF RP2/0
- turbo-fan and turbo-jet aircraft, 80009, PERF RJ2/1
- turbo-prop 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 Thin-Walled Circular-Cylindrical 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 V-ring 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 In-Plane 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 Sharp-Edged Low Aspect Ratio
- subsonic flow to high angles of attack below stall, 95022
- Normal Force and Pitching Moment on Sharp-Edged Low Aspect Ratio
- supersonic flow to high angles of attack, 90013
- Normal Force on Sharp-Edged 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 four-wing arrangements, AERO A.S.06.03.01, AERO A.S.06.03.03
- Transonic Drag-Rise, 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 multi-component 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
- Back-Up Insulating Materials, 80041
- Bibliography of ASME, BS and DIN Standards, 80041
- Calculation of Steady-State 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 Specially-Orthotropic Rectangular Plates
- Curved Unbalanced Laminated Rectangular Plates
- Faceplate Wrinkling
- Flat Sandwich Panels (Cores of Negligible Flexural Stiffness)
- Flat Specially-Orthotropic Rectangular Plates
- Flat Specially-Orthotropic 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
- Ventilated-Wall 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
- Sampled-Data Systems
- Shell-And-Tube Heat Exchangers
- Unsteady Aerodynamics
- Anemometric Data Measuring System in Aircraft
- Planar Flexible Liquid-Filled 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 Specially-Orthotropic Rectangular Plates
- Flat Specially-Orthotropic Square Plates
- Temperature Measuring System in Aircraft
- Three-Dimensional Liquid-Filled 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 Mode-Generalised Inertias, 91001
- Expressions for Mode-Generalised 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 two-span beams, 91001
- multi-span beams, 91001
- single-span beams, 91001
- treatment of additional masses and of non-uniform mass distribution, 91001
- Pairs of Circular-Section 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 Circular-Section 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 Across-Wind Components for All Types of Structures
- horizontal or vertical, cantilevered or fixed at both ends, 89049
- program for constant or varying width, non-uniform or uniform mass, 92036
- simple calculation method, 89049
- Accelerations, Deflections, Loading Due to Along-Wind Components for Single Circular-Section Cylinder
- horizontal or vertical, cantilevered or fixed at both ends, 87035
- program for constant or varying width, non-uniform or uniform mass, 92036
- simple calculation method, 87035
- Accelerations, Deflections, Loading Due to Along-Wind Components for Structures Near Line-Like
- horizontal or vertical, cantilevered or fixed at both ends, 87035
- program for constant or varying width, non-uniform or uniform mass, 92036
- simple calculation method, 87035
- Accelerations, Deflections, Loading Due to Along-Wind Components for Structures Not Line-Like
- program for constant or varying width, non-uniform or uniform mass, 92036
- simple calculation method, 88019
- Deflections Due to Across-Wind Components for Single Circular-Section Cylinder
- horizontal or vertical, cantilevered or fixed at both ends, 96031
- parallel-sided, 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 Polygonal-Section 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 across-wind buffeting, 96030, 96031
- maximum and rms, 96030, 96031
- methods of alleviating, 96030
- mounted in a duct or wind-tunnel, 96030, 96031
- natural or simulated turbulence levels (in a wind-tunnel), 96030, 96031
- parallel-sided, stepped or tapered, 96030, 96031
- percentage of time during which response is narrow-band, 96030, 96031
- program for broad- and narrow-band response running in Excel, 96031
- smooth or rough surfaces, 96030, 96031
- uniform or shear flow, 96030, 96031
- Deflections of Single Multi-Sided Section Structure, Horizontal or Vertical and Symmetrical to Crossflow
- calculation procedure, 90036
- cantilevered or fixed at both ends, 90036
- maximum and rms, 90036
- parallel-sided, 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