ESDU A-Z Index: P-PIS

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| P-PIS | pit-prd | pre-prh | pri-pz |

Packed Seals
see
Reciprocating Seals
Rotary Seals
Palmgren-miner Rule
see
Fatigue Under Variable Amplitude Loading
Panels
Considerations in Design Against Acoustic Fatigue, 86025
Dynamic Response to Excitation
see
Response of Lightweight Structures
Stress Analysis
see
Curved Panels
Curved Rectangular Plates
Curved Sandwich Panels (Cores of Negligible Flexural Stiffness)
Curved Specially-orthotropic Rectangular Plates
Curved Square Plates
Curved Unbalanced Laminated Rectangular Plates
Flat Panels in General
Flat Panels with Fibre-reinforced Unflanged Integral Stiffeners
Flat Panels with Flanged Integral Stiffeners
Flat Panels with Lipped or Unlipped Z-section Stiffeners
Flat Panels with Top-hat Section Stiffeners
Flat Panels with Transverse Stiffeners
Flat Panels with T-section Integral Stiffeners
Flat Panels with Unflanged Integral Stiffeners
Flat Panels with Unlipped Z-section Stiffeners
Flat Parallelogram Panels
Flat Parallelogram Plates
Flat Plates
Flat Sandwich Panels (Cores of Negligible Flexural Stiffness)
Flat Sandwich Panels (Corrugated Cores)
Flat Sandwich Panels (Isotropic Cores)
Flat Sandwich Panels (Truss Cores)
Sandwich Panels and Plates
Pankhurst-glauert
Method for Determining Aerofoil Zero-Lift Angle of Attack, 72024, 84026, 98011
program to predict, 06020
Parabolic-arc Afterbody
see also
Afterbody
Boat-tailing
With or Without Truncation
planform area and its centroid, 77028
surface area, volume, and tail radius of curvature, 77028
Parabolic-arc Cowls
Geometric Parameters, 84004
Spillage Drag
prediction of onset, 84004
variation with geometry, incidence and Mach number, 84004
Parabolic-arc Forebody
see also
Forebody
Ogive Cylinders
With or Without Truncation
planform area and its centroid, 77028
surface area, volume, and nose radius of curvature, 77028
Parabolic-arc Section Fairings
Wave Drag of Rectangular Planform, 71018
Parabolic-arc Section Wings
Wave Drag, 71018, 75004
Paraboloid
see
Parabolic-arc Afterbody
Parabolic-arc Forebody
Paraboloidal Antennas
Mean Forces Due to Wind or Other Fluid Flows, 82031
Moments Due to Wind or Other Fluid Flows, 82031
Pressure Distribution Due to Wind or Other Fluid Flows, 83020
Parachutes
Introduction to Aerodynamics of, 09012
Use in Aircraft Braking, 85029
drag increment, 85029
types, 85029
Paraffin
Fuel
see
Kerosines
Medicinal
see
White Oils
Parafoils
see
Parachutes
Parallel-coupler Mechanisms
see
Crank-rocker Mechanisms
Parallelogram Panels
see
Flat Parallelogram Panels
Parallelogram Plates
see
Flat Parallelogram Plates
Parallel Plate Viscometer
see
Viscometers
Parameter Identification
Linear Systems in Absence of Process Noise
least-squares minimisation including equation- and output-error methods, 87039
maximum likelihood method, 88011
Linear Systems in Presence of Process Noise
maximum likelihood method, 89032
Linear Systems (Lightly Damped) From Frequency Response Measurements, 90006, 93016
determination of initial values from approximation to Nyquist diagram, 90006, 93016
Use of Kalman Filter to Eliminate Measurement Noise, 88039
Parawings
see
Parachutes
Peening
see
Shot Peening
Percentile
Approximate Equations for Values in Normal Distribution, 91041
Estimation of Population Values for Normally-Distributed Variate
to specified confidence from sample mean, 91041
Point Estimate for Extreme-Value Distributions, 87034
Table of Values for Normal Distribution, 91017, 91041
Perfluoropolyalkyl Esters (pfpae)
see
Lubricants
Perforated Plates
see also
Acoustic Absorption Coefficient
Acoustic Impedance
Circular or Rectangular Holes
normal force, 70015
pressure drop across in compressible flow, 82009
pressure drop across in incompressible flow, 81039, 82009
Use to Improve Diffuser Performance
effect on static pressure recovery, 87015
Perforated-wall Wind-tunnels
see
Resonance in Wind-tunnels
Wind-tunnel Corrections for Aerofoils
Performance Analysis
see
Accelerometers
Aircraft Performance Analysis
Aircraft Performance Reduction
Axes Systems in Aircraft Dynamics and Performance
Flight Testing
Helicopter Performance Analysis
Performance Estimation
see
Aircraft Performance Estimation
Performance Measurement
see
Accelerometers
Aircraft Performance Analysis
Aircraft Performance Reduction
Anemometric Data Correction
Axes Systems in Aircraft Dynamics and Performance
Flight Testing
Helicopter Performance Analysis
Performance Reduction
see
Aircraft Performance Analysis
Aircraft Performance Reduction
Axes Systems in Aircraft Dynamics and Performance
Flight Testing
Helicopter Performance Analysis
Performance Series
Location of Items in ESDU Series, 99035
Record of Amendments to Items in ESDU Series, 99035
Persistence and Persistence Index
Definitions for Linear Systems, 67038
Petrol
see
Gasolines
Petroleum
see
Crude Petroleum
Fouling in Crude Oil Distillation Plant
Petroleum Gases
Dynamic Viscosity
temperature variation in liquid state, 66024
Kinematic Viscosity
temperature variation in liquid state, 66024, 71003
Petroleum Waxes
Density
typical values in liquid state, 71003
Dynamic Viscosity
typical values in liquid state, 71003
Kinematic Viscosity
typical values in liquid state, 71003
Phase Angle
Effective Phase Angle in Tyre-Friction Modelling, TM 176
Phase Margin
Linear Systems
definition, 74021, 80002
Phosphate Esters
see
Lubricants
Phosphating
see also
Wear Resistant Surface Coatings and Treatments
Rate of Formation of Case, 86040
Treatment Temperature, 86040
Use to Reduce Wear in Disc Cams, 94017
Phosphor-bronze
Use as Hydrodynamic Bearing Material
guide to selection, 88018
Phugoid
Discussion of Desirable Characteristics for Good Aircraft Handling Qualities, 92006
Discussion of Origin and Characteristics, 86021
Influence of Aircraft Flexibility on, 96037
Requirements for Damping and for Speed Stability Characteristics
for military aircraft, 92006
Pinch Technology
see
Process Integration
Water Conservation in Process Plants
Pin Joints
see also
Linkages
Lugs (Fatigue Strength)
Lugs (Static Strength)
Lugs (Stress Concentration Factors)
Lugs (Stress Intensity Factors)
Stress Concentration Factor Distribution Along Bore in Plate
plain hole loaded by pin, 93030
Pipe Bends
Stress Analysis
see
Pipe Bends (unrestrained)
Pipe Bends (with End Flanges)
Pipe Bends (with Straight Pipe Attachments)
With Internal Flow
see also
Forced Convection Heat Transfer
Noise in Air-conditioning Duct Systems
Pressure Drop in Gas- or Vapour-liquid Internal Flow
Pressure Drop in Internal Flow
design information on guide vanes, 83037
Pipe Bends (unrestrained)
Under In-Plane Bending and Pressure
change in bend angle, 74043
flexibility factors, 74043
maximum shear stresses, 74043
Pipe Bends (with End Flanges)
Under In-Plane Bending
change in bend angle, 81041
flexibility factors, 81041
maximum circumferential and longitudinal stresses, 81041
Pipe Bends (with Straight Pipe Attachments)
Under In-Plane Bending
change in bend angle, 75014
flexibility factors (and effect of short attachments or adjacent bends), 75014
maximum circumferential and longitudinal stresses, 75014
Pipes
Linings to Reduce Noise
see
Acoustic Absorption Coefficient
Acoustic Impedance
Noise in Air-conditioning Duct Systems
Noise Series
Sound Radiation From Open End
see
Noise Prediction for Aerospace Sources
Stress Analysis
see also
Beams in General
Beams of Any Hollow or Solid Polygonal Section
Beams of Circular Section
Cylinders of Circular Section (Strength and Vibration)
Pipe Bends (unrestrained)
Pipe Bends (with End Flanges)
Pipe Bends (with Straight Pipe Attachments)
Struts in General
Struts of Tubular Section
Stress Concentration Data
see also
Circular Holes in Round Rods and Tubes
Fillets in Round Rods and Tubes
Fillets of Double Radius in Round Rods and Tubes
Grooves of Flat-bottomed Section Inside or Outside Tubes
Grooves of U-section Inside or Outside Tubes
duct/plate junctions (duct on one side or through plate), 80027
With External Flow
see
Pipes in Crossflow
With Internal Flow
see
Pipes with Internal Flow
Pipes in Crossflow
Banks of Circular-Section Cylinders or Plain Pipes
see
Forced Convection Heat Transfer
Pressure Drop Across Obstructions in Ducts
Pressure Drop Across Tube Banks
Response of Buildings and Structures
Banks of High-Finned Tubes
see
Forced Convection Heat Transfer
Pressure Drop Across Tube Banks
Banks of Low-Finned Tubes
see
Condensing Flow Over Low-finned Tubes
Forced Convection Heat Transfer
Pressure Drop Across Tube Banks
Heat Exchangers
see
Crossflow Heat Exchangers
Pressure Drop Across Tube Banks
Shell-and-tube Heat Exchangers
Pairs of Circular-Section Cylinders or Plain Pipes
see
Profile Drag
Response of Buildings and Structures
Sideforce
Single Circular-Section Cylinder or Plain Pipe
see
Axial Force
Base Pressure
Bluff Bodies
Critical Conditions in Fluid Flow
Forced Convection Heat Transfer
Free Convection Heat Transfer
Normal Force
Overturning Moment on Surface-mounted Structures
Pressure Distribution
Pressure Drop Across Obstructions in Ducts
Profile Drag
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
Sideforce
Vortex Shedding
Small Groups of Circular-Section Cylinders or Plain Pipes
see
Response of Buildings and Structures
Pipes with Internal Flow
Choking Conditions
see
Choking Conditions in Duct Flow
One-dimensional Flow
Compressible Flow Equations and Curves
see
One-dimensional Flow
Example of Network Calculation, FMI1
Forces Due to, 67035, 69008, 81004, 81009
Fouling
see
Fouling
Fouling in Combustion Plant
Fouling in Cooling Water Systems
Fouling in Crude Oil Distillation Plant
Heat Transfer
see
Boiling Flow in Pipes
Condensing Flow in Pipes
Falling Film Evaporation
Forced Convection Heat Transfer
Mixed Forced-free Convection Heat Transfer
Reflux Condensers
Moments Due to, 81004
Noise Attenuation and Generation
see
Noise in Air-conditioning Duct Systems
Noise/sound Propagation
Planar Flexible Fluid-Filled System With Elastic Supports and Lumped Masses
generalised masses, 88022
generalised stiffnesses, 88022
mode shapes, 88022
natural frequencies, 88022
program for vibration characteristics, 88022
simplified graphical approach to vibration characteristics, 88022
Planar Flexible Liquid-Filled System With Elastic Supports and Lumped Masses
acceleration and velocity of junction following pump trip or valve closure
displacement of junction following pump trip or valve closure
liquid pressure and velocity at junction following pump trip or valve closure
pipe forces at junction following pump trip or valve closure
program for coupled response to transient liquid pressure changes
Pressure Drop
see
Boiling Flow in Pipes
Condensing Flow in Pipes
Diffusers
Pressure Drop Across Obstructions in Ducts
Pressure Drop in Gas- or Vapour-liquid Internal Flow
Pressure Drop in Internal Flow
Pressure Drop in Non-newtonian Flow
Sudden Contractions in Ducts
Sudden Expansions in Ducts
Two-phase (Gas- or Vapour-liquid) Flow
Pressure Losses at Entry to Duct From Large Space Including Effect of Edge Rounding
compressible or incompressible single-phase flow, 05024
Pressure Recovery
see
Pressure Recovery
Pressure Transient Prediction and Suppression
see
Pressure Transients in Gas (and Steam) Internal Flow
Pressure Transients in Liquid Internal Flow
Steady, Spatially Non-Uniform Axial Compressible
application of models to components in series, 95011, 97029
one-dimensional model of properties for calorically-perfect, 95011
one-dimensional model of properties for thermally-perfect, 97029
Three-Dimensional Liquid-Filled Flexible Unbranched System With Rigid Supports
behaviour following pump trip or valve closure, 93031
location of maximum/minimum bending and torsional moments in pipe walls, 93031
location of maximum/minimum displacement and pipe wall stresses, 93031
location of maximum/minimum pressure and velocity, 93031
maximum/minimum bending and torsional moments in pipe walls, 93031
maximum/minimum displacement and pipe wall stress, 93031
maximum/minimum pressure and velocity, 93031
program for coupled response to transient liquid pressure changes, 93031
Velocity Profile
see
Velocity Profile
Piston Engines
see
Aircraft Piston Engines
Piston Rings
see
Reciprocating Seals

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| P-PIS | pit-prd | pre-prh | pri-pz |