ESDU AZ Index: SOLSTD
 Effect on Equilibrium Surface Temperature Due to Aerodynamic Heating, 69009
 Effect on Temperatures of SelfContained Bearing Assemblies, 78029
 Total Irradiance Within Atmosphere
 scattering and absorption by ozone and water vapour, 69015
 scattering by dry atmosphere and dust, 69015
 solar constant, 69015
 spectral distribution, 69015
 variation with altitude, location, season and hour, 69015
 see
 Porosity
 see
 Acoustic Fatigue
 Aerofoils
 pressure distribution, 69013, TD MEMO 6511
 Cones
 conditions for existence on surface, 70008, 70009, 70010, AERO S.00.03.16
 Wedges
 conditions for existence on surface, AERO S.00.03.16
 Aerofoils, 69013, TD MEMO 6511
 see also
 Acoustic Absorption Coefficient
 Acoustic Impedance
 Aircraft Noise Series
 Atmospheric Effects on Sound
 Crossflow Heat Exchangers
 Noise
 Noise in AirConditioning Duct Systems
 Noise Limiting Curves
 Noise Prediction for Aerospace Sources
 Noise/sound Propagation
 ShellAndTube Heat Exchangers
 TurboFan and TurboJet Engines
 Airframe noise, 90023
 Boundary layer noise, 75021, TM 58
 BuzzSaw Tones
 farfield, 75020
 supersonic fan in duct, 75020
 Cabin noise, internal noise, 07001
 Coaxial Static Subsonic Jet FarField
 database, 11002
 program to interpolate in or extrapolate database, 11002
 Combination of Levels, 17012, 79037
 Combustor noise, combustion noise, 05001
 Conversion to R.M.S. Fluctuating Pressure, 21003
 Definitions of Intensity, Intensity Level, Power Level, Pressure and Pressure Level, 21003, 22001
 Discrete Frequency Far and NearField for Single Propeller With Axial or NonAxial Inflow (Static or Flight)
 estimation of unsteady lift coefficient for input to prediction program, 96027
 program for estimation from steady or unsteady loading data, 11005
 Discrete Frequency FarField for Single Static Propeller/Rotor
 graphical estimation of maximum component of rotational noise, 76020
 Estimation of Attenuation Due to Barriers
 program in Fortran, 79011
 Estimation of sideline noise in subjective noise metrics, 82027 Addendum
 Fan noise, compressor noise, 98008
 Fans
 prediction at maximum efficiency point, 79037
 Farfield jet noise, 11002, 89041, 98019
 Ground reflection effects, 94035
 Jetbyjet noise shielding, 88023
 Lateral attenuation, 81035, 82027
 Nearfield jet noise, 99006
 Noise shielding by barriers, 79011
 Prediction of Airframe Noise ComponentbyComponent
 program for aeroplanes not propeller powered, 90023
 Propeller noise, 11005, 76020, 96027
 Section properties of fuselage stiffeners, 07001 Addendum
 Shielding Effect of Two Identical SingleStream Parallel Jets
 program for estimation, 88023
 SingleStream Static Jet FarField, 89041, 98019
 database, 98019
 program to interpolate in or extrapolate database, 98019
 use of data to predict under flight conditions, 87011
 SingleStream Static Jet NearField, 72002, 99006
 databases, 99006
 program for interpolation in or extrapolation of database, 99006
 Sound absorption coefficients of liners, 74003, 74004
 Sound attenuation due to air absorption, 78002, 78003
 Sound attenuation in circular ducts, 00012
 Sound attenuation in rectangular and annular ducts, 00024
 Sound Intensity, 21003
 Sound Power, 21003
 Sound Pressure, 21003
 Sound propagation, 94036
 Sound propagation in the presence of wind and temperature gradients, 89036
 Sound radiation from circular ducts, 01015
 Statictoflight effects, 87011
 Turbine noise, 12001
 Turbulent Boundary Layer
 surface pressure fluctuations, 75021, TM 58
 Due to Change of Angle of Attack, TD MEMO 6403
 Effect of Camber and Twist Distributions and Deflection of Leading and/or TrailingEdge Plain Flaps on
 program for subsonic flow, 95010
 Effect of Camber and Twist Distributions on, 83040
 program for subsonic flow, 95010
 Example of Alleviation by Active Controls, 84020
 Undercarriage
 see also
 Range
 Analysis of Flight Test Data to Determine Guarantees
 as illustration of use of statistical techniques, 91018
 Introduction to Estimation, 73018, 80026
 PistonEngine Aircraft
 flight conditions for maximum with parabolic drag law, 75018
 practical flight conditions for maximum, 75018
 typical variation with operational parameters, 75018
 Program to Calculate for Any Power Plant
 using known drag and engine characteristics, 00031, 00032, 00033, 00034, 00035, 00036, 00037, 00038, 00039
 TurboFan and TurboJet Aircraft
 flight conditions for maximum, 73019
 flight conditions for maximum with parabolic drag law, 73019
 TurboProp Aircraft
 flight conditions for maximum with parabolic drag law, 75018
 practical flight conditions for maximum, 75018
 typical variation with operational parameters, 75018
 see also
 Endurance (Flight Time)
 Introduction to Estimation, 73018, 80026
 PistonEngine Aircraft
 flight conditions for maximum with parabolic drag law, 75018
 Program to Calculate for Any Power Plant
 using known drag and engine characteristics, 00031, 00032, 00033, 00034, 00035, 00036, 00037, 00038, 00039
 TurboFan and TurboJet Aircraft
 flight conditions for maximum, 73019
 flight conditions for maximum with parabolic drag law, 73019
 TurboProp Aircraft
 flight conditions for maximum with parabolic drag law, 75018
 See under substance of interest
 see
 Density
 See under substance of interest
 See under substance of interest
 Various Dry Rubbing Bearing Materials
 carbon, polymer, thermoset, solid lubricant impregnated metal, 87007
 General Introduction to Use in Study of Random Processes

 see
 Random Processes
 Use in Calculating Response of Buildings and Structures
 Use in Representing Atmospheric Turbulence Properties
 see also
 Power Spectral Density Function
 Analysis of Measurements Made in Level Flight
 pistonengine aircraft, 80009
 turbine helicopters, 74042, 80009
 turbofan and turbojet aircraft, 70020, 70021, 70022, 80009
 Estimation in Level Flight

 see also
 Equations of Motion
 aircraft performance program, ESDUperf
 effect of small changes in drag, weight, thrust (or power) on, 86004
 program using known drag, lift and thrust characteristics, 00031, 00032, 00033, 00034, 00035, 00036, 00037, 00038, 00039
 Estimation of Maximum in Level Flight
 aircraft performance program, ESDUperf
 program using known drag, lift and thrust characteristics, 00031, 00032, 00033, 00034, 00035, 00036, 00037, 00038, 00039
 Measurement in Flight
 Minimum Drag in Level Flight, 81026
 Minimum Thrust Power in Level Flight, 81026
 Reduction of Measurements Made in Level Flight
 pistonengine aircraft, 80009, PERF RP1/0, PERF RP1/1, PERF RP2/0
 turbofan and turbojet aircraft, 80009, PERF RJ2/0
 turboprop aircraft, 80009, PERF RT1/0, PERF RT1/1
 Sound
 use in temperature measurement, 02006
 Stability During Approach, PERF EG6/2
 Heat Transfer
 see
 Forebody
 Under Differential Temperature Across Thickness
 steady state temperature and stress distributions, 89027
 see also
 Sidespillage
 AxiSymmetric Cowls at Subsonic Speeds
 prediction of onset for all types (NACA 1series, conical, elliptical, parabolic, other), 84004
 prediction of onset (NACA 1series and with larger lip radius), 81024
 variation with geometry and Mach number (NACA 1series and with larger lip radius), 81024
 variation with geometry, Mach number and incidence for all cowls, 84004
 variation with Mach number and mass flow ratio (NACA 1series and modified profiles), 94014
 Definition, 81004, 84004, 97016
 Flush Intakes
 NACA convergentdivergent planform, 86002
 rectangular planform, 03006, 86002
 Scoop Intakes Immersed in Boundary Layer
 with or without boundary layer diverter, 86002
 see also
 Downwash
 Flaps
 Interference
 Introduction to Data Items on Effect of HighLift Devices on Drag, Lift and Pitching Moment, 97002
 Lift Increment Due to Deployment on Aerofoils at Zero Angle of Attack
 alone or with leadingedge highlift devices, 94026, 94027, 94029
 Lift Increment Due to Deployment on Wings at Zero Angle of Attack
 alone or with leadingedge highlift devices, 96032, 97002, 97009
 Maximum Lift Increment Due to Deployment on Aerofoils
 alone or with leadingedge highlift devices, 94026, 94027, 94029
 Maximum Lift Increment Due to Deployment on Wings, 91014
 with leadingedge highlift devices, 92031
 Normal Force, AERO F.05.01.01
 Pitching Moment Increment Due to Deployment on Aerofoils and Wings
 alone or with leadingedge highlift devices, 01013, 03017, 98009
 flap chord ratio less than unity, AERO F.08.01.01, AERO F.08.01.02
 Profile Drag Increment Due to Deployment on Wings, 74010, AERO F.02.01.07
 Trailing Vortex Drag Increment Due to Deployment on Cambered and Twisted or Plane Wings
 program for estimation for any flap and wing geometry, 01007
 tabulated values for selected flap and wing geometries, 01007
 Derivation of PartSpan Factors, TM 172
 Discussion of Effect of Spoiler Position on LiftCurve Slope, 14004
 Drag Increment in Ground Effect Due to Solid
 flaps and slats deployed, 76026
 Example of Calculation of Local Excrescence Contribution to Drag, 93032
 Induced and Profile Drag Increments in Free Air Due to Perforated or Solid
 including contribution to induced drag from flapspoiler interference, 96026
 Lift Decrement in Free Air Due to Perforated or Solid
 trailingedge flaps deployed, 14005
 trailingedge flaps undeployed, 14004
 Lift Decrement in Ground Effect
 flaps and slats deployed, 76026
 Rolling Moment Due to Solid or Perforated
 trailingedge flaps deployed, 14005
 trailingedge flaps undeployed, 14004
 Typical Time Delay in Response, 85029
 Use with cavity flow, 08011, 08012, 09001, 09002, 16004
 Yawing Moment Due to Perforated or Solid Used as Roll Control
 including contributions from spoilerwakefin and flapspoiler interferences, 96026
 Prediction of Drag Due to Impingement on Airframe in TakeOff and Landing

 see
 Impingement Drag
 Prediction of Sidespray Envelope From Aircraft Tyres

 see
 Aircraft Tyres
 see
 Gears
 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
 Boundaries
 Derivatives

 see
 Derivatives
 During Approach, PERF EG6/2
 Dynamic
 In Intake Flow

 see
 Intakes
 In Journal Bearings

 see
 Journal Bearings
 Lateral
 Longitudinal
 Rotors

 see
 Rotors
 Static
 Structural

 see
 Buckling
 Dynamic Response to Turbulence and Wind
 Mean Forces, Moments and Pressures Due to Wind
 Mechanical Vibration Characteristics

 see
 Buildings
 see
 Range
 Curves of as Function of Mach Number
 calorically imperfect diatomic gases, AERO S.00.01.10
 perfect air, 69026, 73017, 74028, 82018, AERO 00.03.05
 perfect gases, 74028, AERO S.00.03.06, AERO S.00.03.07
 real air, 73017
 Equations for Estimation From Freestream Conditions
 pressure only, 73017, 82018
 various quantities, 69026, 74028, AERO 00.03.05, AERO S.00.03.06, AERO S.00.03.07
 see also
 Flow Separation
 Maximum Lift
 Considerations in Use of Stall Strips on Wings, 97017
 Limitation on Approach Speed, PERF EG6/2
 Limitation on TakeOff Safety Speed, 85029
 Determination to Specified Confidence for Population From Sample Value
 using ChiSquared Distribution, 91041
 ENSTAFF for Fighter Aircraft Including Environmental Factors
 moisture management, 97018
 temperature profiles used, 97018
 FALSTAFF for Fighter Aircraft
 characteristics and mission types, 97018
 description of derivation, 97018
 general principles in generation of loading, 97018
 taxiing loading used, 97018
 Felix and Helix for Helicopters
 discussion of sortie types, durations and manoeuvres, 97018
 landing and takeoff loads, 97018
 load matrix used, 97018
 rainflow analysis, 97018
 TWIST and miniTWIST for Transport Aircraft
 characteristics, 97018
 description of derivation, 97018
 flight types and number of cycles used, 97018
 TurboJet Engines
 definition, 69006
 TurboJet Engines
 definition, 69006
 Definition, 91041
 Use in Control System Design, 80018
 Introduction to Influence of Flexibility on Static Stability
 constant speed conditions, 96037
 overall structural mode, 96037
 Treatment of Conventional Transport With Flexible Tailplane/Wing Using Orthogonal Modes
 angle of attack in trimmed level flight or a pullout manoeuvre, 97032
 conditions for aeroelastic static stability, 97032
 deflections and twist of tailplane and wing, 97032
 elevator angle in trimmed level flight or a pullout manoeuvre, 97032
 elevator trim margin in trimmed level flight or a pullout manoeuvre, 97032
 equilibrium equations in quasisteady symmetric manoeuvres, 97032
 Treatment of Flexibility for Conventional Transport With Swept or Unswept Cambered Wing
 consideration of elevator trim divergence speed, 96037
 effect on tailplane and wing load distribution, 96037
 elevator manoeuvre trim margin in steady pullout, 96037
 elevator trim margin in level flight, 96037
 Treatment of Flexible Conventional Transport Using Normal Modes
 angle of attack in trimmed level flight or a pullout manoeuvre, 99033
 deformation of fuselage, wing, nacelle assembly and tailplane, 99033
 elevator angle in trimmed level flight or a pullup manoeuvre, 99033
 equilibrium equations in quasisteady symmetric manoeuvres, 99033
 see also
 Anemometric Data Correction
 Calculation of Static Pressure Correction Coefficient, 20006, 20007
 In Steady, Spatially NonUniform Axial Compressible Flow
 as part of reference set of average flow properties for caloricallyperfect gas, 95011
 as part of reference set of average flow properties for thermallyperfect gas, 97029
 Relation With Total Pressure

 see
 Total Pressure
 Variation With Altitude
 model atmospheres, 00034, 00036, 68046, 69026, 72018, 77021, 77022, 78008
 program to calculate in nonStandard conditions, 00031, 00032, 00033, 00034, 00035, 00036, 00037, 00038, 00039
 program to calculate in Standard conditions, 00031, 00032, 00033, 00034, 00035, 00036, 00037, 00038, 00039
 see also
 PitotStatic Probes
 see also
 Ambient Temperature
 Definition, 83041
 Coupling Loss Factors
 equation for connected plates, 15010, 98020, 99009
 prediction for curved or flat plates coupled directly or through a beam, 98020
 Energy Flow Relationships, 15010
 Estimation of Response of Lightweight Structures
 advantages, features and limitations, 97033, 99009
 commercial software, 15010, 99009
 comparison of results for simple structure with those from finite element analysis, 99009
 definition and sources of information on modal density, modal overlap and loss factors, 99009
 ensemble, frequency and spatial averaging, 99009
 experimental determination of parameters from measurements, 99009
 introduction to method, 99009
 procedure for modelling structure by subsystems and considerations in their definition, 99009
 typical applications, 97033, 99009
 use of power input, transmission and dissipation to arrive at power balance equations, 99009
 variance and its importance in evaluating results, 99009
 Modal Density, 11008, 13003, 99009
 see also
 Random Processes
 Regression
 AndersonDarling Test for Normality (Goodness of Fit), 91041
 Approximate Estimation of Standard Deviation of Output Error From Known System Tolerances, 91017
 ChiSquared Distribution
 approximate equations for percentiles, 91041
 estimation with specified confidence of population standard deviation from sample value, 91041
 table of percentiles, 91017, 91041
 use as test for Normality (goodness of fit) 00932 (MMDH), 91017, 91019
 Concept of Standard Distributions and Use of DistributionFree Techniques, 92040
 Estimation of Standard Deviation of Variable From Standard Deviation of its Components, 91017, 91020
 Explanation of Confidence Level and Probability, FMI2
 ExtremeValue Analysis
 Gumbel, 87034
 Lieblein, 87034
 Weibull, 87034
 Fisher's Variance Ratio F Distribution
 approximate equations for percentiles, 91041
 examples of use to establish significance of linear regressions, 92021, 92022
 table of percentiles with 95 per cent confidence, 91017
 table of percentiles with 97.5 per cent confidence, 91041
 use as test for Normality (goodness of fit), 91017, 91018
 use for comparison of standard deviations of two samples, 91017, 91018, 91041, 93023
 Hypothesis Testing, 91017, 92040
 Introduction to Analysis of Engineering Data, 92040
 LogNormal Distribution
 cumulative distribution function, 21004
 probability density function, 21004
 Measures of Dispersion and Location, 92040
 NonCentral Student's t Distribution
 use in estimation to specified confidence of population coefficient of variation, 91041
 use in estimation to specified confidence of population percentiles, 91041
 Normal or Gaussian Distribution
 approximate equations for percentiles, 91041
 Bartlett's test for homogeneity of several estimates of population variance, 91017
 bivariate distribution, 91017, 96024
 conditional probability distribution, 91017, 96024
 cumulative distribution function, 21004
 estimation from sample of population coefficient of variation to specified confidence, 91041
 estimation to specified confidence of population percentiles from sample mean, 91041
 expression for cumulative distribution function, 91041
 joint probability distribution, 86010, 91017, 96024
 marginal probability distribution, 91017, 96024
 probability density function, 85020, 92040
 probability density function, 21004
 table of statistics for cumulative distribution function and percentiles, 91017, 91041
 use of cumulative distribution function to compare means of samples, 93023
 use of probability grids, 91017, 91019
 Probability Definitions and Relations
 random events, and discrete and continuous random variables, 92040
 Sampling and Effects of Censoring, 92040
 Skewed Distribution, 91017, 92040
 Student's t Distribution
 equations for percentiles, 91041
 estimation to specified confidence of population mean from sample value, 91017, 91041
 table of percentiles, 91017, 91041
 use for comparison of means of two samples, 91017, 91018, 91041
 Techniques of Interval and Point Estimation, and Hypothesis Testing, 92040
 Use in Analysis of Atmospheric Turbulence, 74030, 85020, 86010
 Use in Analysis of ExtremeWind Speeds, 87034
 Use in Analysis of TwoPhase Flow Pressure Drop Data, FMI2
 Use in Deriving Materials Design Data 00932 (MMDH)
 Use in Determination of Pressure Error Correction, 95024
 Use of Bivariate Distribution in Analysis of Data on Length and Width of US Paved Runways
 conditional, joint and marginal distributions, 96024
 Use to Analyse Aircraft/GroundTest Machine Braked Experimental Friction Data
 to predict wet stopping distance with chosen probability, 00018, 99015, 99016, 99017
 Weibull Distribution
 confidence bounds, 21004
 cumulative distribution function, 21004
 hazard function, 21004
 probability density function, 21004
 reliability function, 21004
 sources of uncertainty, 21004
 use in fatigue analysis, 21004
 use of probability plots, 21004
 Weibull parameters, 21004
 Weibull weakestlink theory, 21004