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Hall Chart
Unity Feedback Systems
description, 74021
disadvantages for system assessment, 74021
example of use, 74021
Handling Qualities
see also
Lateral Stability and Response
Longitudinal Stability and Response
Consideration of Flight Phases in Relation to, 92006
Definition of Controllability, 92006
Definition of Manoeuvrability, 92006
Discussion of Piloting Techniques, 92006
Division of Aircraft Types Into Classes in Relation to, 92006
Pilot Opinion Ratings and Cooper-Harper Scale, 92006
Requirements for Stick Force and Stick Force Gradient
military aircraft, 92006
Head Loss
Internal Flow
see
Boiling Flow in Pipes
Condensing Flow in Pipes
Fouling
Fouling in Combustion Plant
Fouling in Cooling Water Systems
Pressure Drop Across Obstructions in Ducts
Pressure Drop Across Tube Banks
Pressure Drop in Gas- or Vapour-liquid Internal Flow
Pressure Drop in Internal Flow
Pressure Drop in Shell-and-tube Heat Exchangers
Sudden Contractions in Ducts
Sudden Expansions in Ducts
Two-phase (Gas- or Vapour-liquid) Flow
Heat Balance
Calculation of Runway Temperature from Ambient Pressure and Ambient Temperature, TM 188
Equilibrium Surface Temperature on an Airframe
forced convection and radiation, 69009, 69012, 89022
Heat Capacity
see
Specific Heat Capacity
Heat Conduction
see
Cylinders of Laminated Construction
Flat Rectangular Heated Plates
Heat Transfer
Joints
Refractory Lining Materials
Spherical Shells of Laminated Construction
Thermal Conductivity
Heat Demand and Supply Curve
see
Grand Composite Curve
Heat Exchangers
see also
Condensing Flow Over Low-finned Tubes
Crossflow Heat Exchangers
Forced Convection Heat Transfer
Fouling
Fouling in Combustion Plant
Fouling in Cooling Water Systems
Free Convection Heat Transfer
Heat Pipes
Mixed Forced-free Convection Heat Transfer
Pressure Drop Across Tube Banks
Pressure Drop in Internal Flow
Pressure Drop in Shell-and-tube Heat Exchangers
Roughness
Shell-and-tube Heat Exchangers
Advantages and Limitations of Various Types, 92013, 95007
Criteria for Selection for Given Duty, 92013
Design of Process Plant Network to Minimise Utility Use
using process integration, 87030, 90033
Detailed Cost Data for Various Types With Single- or Two-Phase Fluids
air-cooled, 92013, 94043
double-pipe and printed circuit, 92013
plate-and-frame, 95007
plate-fin, 92013, 97006
shell-and-tube, 92013, 94042
use in selection of heat exchanger type for given duty, 92013
Discussion of General Characteristics of Various Types, 92013, 95007
Enhancement of Performance by Added Roughness
see
Forced Convection Heat Transfer
Pure Co- or Counter-Current Flow With Two Streams
charts of thermal effectiveness for design/performance rating, 98005
maximum heat transfer effectiveness, 98004
prediction of temperature meet (cross) between counter-current flows, 98005
Selection Procedure for Given Duty
based on cost and hydraulic and thermal performance, 92013
Thermal Effectiveness - NTU Method for Design and Performance Rating
analytical and graphical data for various types/configurations, 98005
applicability, assumptions and limitations, 98003
comparison of maximum heat transfer effectiveness for various types/configurations, 98004
comparison of method with F-factor methods, 98003
comparison of thermal performance of various types/configurations, 98004
conditions for 95 per cent maximum thermal effectiveness for various types/configurations, 98005
conditions for temperature meet (cross) for various types/configurations, 98005
definition of thermal capacity ratio, 98003
definition of thermal effectiveness and number of heat transfer units, NTU, 98003
derivation of basic equations and introduction to method, 98003
modelling techniques for deriving data for various types, 98007
use in selecting appropriate type/configuration, 98004, 98006
worked examples of case studies for selection of appropriate type/configuration, 98006
Heat Pipes
see also
Heat Exchangers
Wicks of Small Pore Size
Discussion of Types and Methods of Fluid Circulation, 80013
Effects of Acceleration and Vibration, 80013
Explanation of Operation of Capillary-Driven, 80013
advantages and disadvantages of various types of wick, 80013
calculation of fluid fill required, 80013
effect of underfill, 80013
flat-plate types, 80013
operating limits and their significance, 80013
typical pressure distributions and liquid-vapour interface shapes, 80013
use of figure of merit for working fluid, 80013
variable conductance types, 80013
Explanation of Operation of Two-Phase Closed Thermosyphons, 80013, 81038
calculation of fluid fill required, 80013, 81038
operating limits and their significance, 80013, 81038
use of figure of merit for working fluid, 80013, 81038
Figure of Merit for Various Working Fluids for - 60 ?C to 300 ?C, 80017
Guidance on Selection in Preference to Other Heat Exchanger Types, 92013
Introduction to Items on Performance Estimation, 80013
Materials Compatibility
detailed summary of performance of various material/fluid combinations, 80013
general considerations, 80013
Performance Estimation of Capillary-Driven, 79012
boiling, circulation, entrainment, and sonic limits, 79012
overall thermal resistance, 79012
pressure drop through components, 79012
vapour pressure or viscous limit, 79012
Performance Estimation of Two-Phase Closed Thermosyphons, 81038
boiling and sonic limits, 81038
counter-current flow limit, 81038
effect of hydrostatic head on temperature for vertical, 81038
internal thermal resistance, 81038
liquid fill necessary to avoid dryout, 80013, 81038
Response to Step Change in Heat or Temperature Input, 80013
Safety Considerations, 80013
Start-Up and Shut-Down, 80013
Typical Applications, 80013
Use as Thermal Diode or Thermal Switch, 80013
Heat Pumps
see also
Heat Pipes
Incorporation in Process Plant to Optimise Energy Use
criteria for suitability, 89001
selection method taking account of economics, 89001
using process integration techniques, 89001
Heat Resisting Steels
see
Nickel Steels
Heat Transfer
see also
Aerodynamic Heating
Boiling Flow in Pipes
Condensing Flow in Pipes
Condensing Flow Over Low-finned Tubes
Crossflow Heat Exchangers
Cylinders of Circular Section (Strength and Vibration)
Falling Film Evaporation
Flat Rectangular Heated Plates
Forced Convection Heat Transfer
Free Convection Heat Transfer
Heat Exchangers
Heat Pipes
Mixed Forced-free Convection Heat Transfer
Radiation Heat Transfer
Reflux Condensers
Refractory Lining Materials
Roughness
Shell-and-tube Heat Exchangers
Spherical Shells of Laminated Construction
Calculation of Runway Temperature from Ambient Pressure and Ambient Temperature, TM 188
Coils of Various Geometries
effect of variable fluid properties on pressure drop, 77029
Definitions, 89022
Effect on Skin Friction
laminar boundary layer, 68019
turbulent boundary layer, 68020
Forced, Free and Mixed Convection
regimes in crossflow over circular-section cylinder, 69004
regimes in duct flow, 92003
To or From Various Elementary Components of Use in Calculation of Bearing Temperature
along bars, cylinders, shafts and truncated cones, 78028
from edges of hole in plate, 78028
radially from disc, 78028
radially through hollow circular-section cylinder, 78028
Heat Transfer Salt
Chemical Composition, 66024
Dynamic Viscosity
temperature variation in liquid state, 66024
Kinematic Viscosity
temperature variation in liquid state, 66024
Heat Treatment
see
Electron Beam Transformation
Flame Hardening
Induction Hardening
Laser Transformation
Heaviside Transform
Definition, 69025
Height
see
Altitude
Geopotential Altitude
Helical Coils
see
Forced Convection Heat Transfer
Pressure Drop in Internal Flow
Helical Flow in Baffles
see
Shell-and-tube Heat Exchangers
Helical Gears
see
Gears
Helical Grooves
Rectangular- or Rounded-Section in Straight Pipes
see
Pressure Drop in Internal Flow
Helical Springs of Round Wire
Buckling Under Compression Including Effect of End Restraint, 82008
Design Guidance
compression spring buckling avoidance, 83003
consideration of cost versus reliability, 83003
corrosion avoidance and surface protection, 83003
effect of eccentric loading on compression springs, 83003
effect of prestressing (scragging) on compression springs, 83002, 83003
effects of surface finish and treatment, 83003
end form design of compression springs, 83003
end hook design of tension springs, 83003
optimum design, 83003
specification of tolerances, 83003
Diameter Increase Under Compression, 82012
Effect of Cyclic Loads on Stresses, 82008
surging and estimation of damping, 82008
Estimation of Fatigue Strength
effect of abrasive cleaning, 83002
effect of corrosion, 83002
effect of low temperature heat treatment, 83002
effect of prestressing (scragging), 83002, 83003
effect of shot peening, 83002, 89031
Goodman diagrams for steels and other alloys to BS or ASTM Standards, 83002
Glossary of Terminology, 83003
Manufacturing Requirements
specification sheet, 83003
Materials Data for Use in Selection, 83002
steels and other alloys for precision springs for high/low temperatures, 83003
Maximum Bending Stress in End Hooks Under Tension, 82008
allowable values for steels and other alloys to BS or ASTM Standards, 83002
Maximum Stresses Under Compression, 82008
allowable values for steels and other alloys to BS or ASTM Standards, 83002
Nested in Parallel (Concentrically)
clearance between springs, 82012
design notes, 82012
determination of spring index, 82012
example of design process, 82012
maximum volumetric efficiency, 82012
reasons for using, 82012
use to replace single spring to reduce stresses, 82012
Nested in Series (Telescopically)
example of design process, 82012
reasons for using, 82012
Nominal Solid Length, 82008
Special Designs
notes on conical compression and variable pitch, 83003
Spring Rate or Stiffness, 82008
Stress Increase Due to Helix Warping for Short Springs, 82008
Stress Increase Due to Transverse Load, 82008
Helicopter Noise
see also
Atmospheric Effects on Sound
Ground Reflection Effect on Noise
Components of Rotor Noise, 02020, 76020
Discussion of Sources, 02020
Rotational Component of Rotor Noise
estimation of maximum sound pressure levels, 76020
Helicopter Performance Analysis
Turbine Helicopters
endurance, 74042
fuel consumption, 74042
hover, 73027
introduction to non-dimensional methods, 73026
power required for level flight, 74042
range, 74042
speed in level flight, 74042
Helium
Forced Convection Heat Transfer in Ducts
variable gas property effects, 81045, 92003, AERO 00.02.05
Helix
see
Standard Fatigue Loading Sequences
Hemispherical Forebody
see
Forebody
Herschel-bulkley Flow Curve Model
see
Non-newtonian Fluids
Hertzian Contact
see
Contact Phenomena
Elastohydrodynamic Lubrication
Hexagonal Cell Core Sandwich
see
Curved Sandwich Panels (Cores of Negligible Flexural Stiffness)
Flat Sandwich Panels (Cores of Negligible Flexural Stiffness)
High Alloy Steels
see also
Austenitic Stainless Steels
Duplex Stainless Steels
Maraging Steels
Martensitic Stainless Steels
Precipitation Hardening Stainless Steels
Steels
Fatigue Crack Propagation Rate in High Chromium, Manganese and Nickel
see also
Crack Propagation
characteristic slopes of plots against stress intensity factor, 84003
effect of alloy composition, 84003
effect of heat treatment, 84003
effect of mean stress (or stress ratio), 84003
Threshold Stress Intensity Factor Range for High Chromium, Manganese and Nickel, 84003, 84003
effect of mean stress (or stress ratio), 84003
High-lift Devices
see
Flaps
Jet/flap Interference
Leading-edge High-lift Devices
High-load Transfer Joints in Aluminium Alloys
see also
Fretting Fatigue
Fatigue Strength Under Variable Amplitude Axial Loading
effect of bending induced by lack of symmetry, 90018
effect of different fastener types and fit, 90018
High-precision Rolling Bearings
see
Rolling Bearings for Specialised Applications
High Temperature
see
Refractory Lining Materials
Temperature Measurement
High Tensile Low Alloy Steels
see also
Steels
Fatigue Crack Propagation Rate
see also
Crack Propagation
characteristic slopes of plots against stress intensity factor, 17003
effect of corrosive and other environments, 93033
effect of mean stress (or stress ratio), 17003
effect of tensile strength, 17003
Fatigue Crack Propagation Rate (Short Cracks), 93033
effect of alloy composition, 93033
effect of corrosive and other environments, 93033
effect of mean stress (or stress ratio), 93033
Fatigue Limit Under Axial Loading
effect of mean stress for unnotched specimens, 88008
effect of notch size and type, 74016
probability of attainment for unnotched specimens, 88008
relationship with tensile strength for notched specimens, 74016
relationship with tensile strength for unnotched specimens, 88008
semi-range/mean stress diagram, 88008
Fatigue Limit Under Bending
effect of notch size and type, 74016
probability of attainment for unnotched specimens, 88008
relationship with tensile strength for notched specimens, 74016
relationship with tensile strength for unnotched specimens, 88008
Fatigue Limit Under Tension
probability of attainment for unnotched specimens, 88008
relationship with tensile strength for unnotched specimens, 88008
Fatigue Strength Under Bending
effect of notches, 71027
relationship with tensile strength, 71027
Fracture Toughness
values at room temperature, 17003
variation with temperature, 83023
Threshold Stress Intensity Factor Range, 17003
effect of mean stress (or stress ratio), 17003
Hinge Moment
see also
Airforce Coefficients
Flutter Derivatives
Unsteady Aerodynamics
Calculation in Subsonic or Transonic Two-Dimensional Flow Using VGK
plain sealed leading- and/or trailing-edge controls or flaps, 01033
Derivatives With Control Deflection in Two-Dimensional Flow, AERO C.04.01.02
effect of Irving internal balance, AERO C.04.01.04
effect of nose balance, AERO C.04.01.03
Derivatives With Incidence and Control Deflection in Three-Dimensional Flow
effect of tab, including gap effects, AERO C.04.01.08
example calculation, including balance and tab effects, 89010
increments due to shielded or unshielded horn balances, 88003
swept surface with part span control and constant spanwise properties, 89009
unswept surface with part span control and varying spanwise properties, AERO C.04.01.06
Derivatives With Incidence in Two-Dimensional Flow, AERO C.04.01.01
effect of Irving internal balance, AERO C.04.01.04
effect of nose balance, AERO C.04.01.03
Introduction to Data Items on Estimation, AERO C.04.01.00
Frise ailerons, AERO C.04.01.00
gap effects, AERO C.04.01.00
linear range, AERO C.04.01.00
Hoardings (Elevated Above Ground Level)
Effect of Wind With Shear and Tubulence
centre of pressure, and mean and peak forces and overturning moments, 89050
Hodograph
Examples for Frame Shaking Force and Joint Forces, 90022
Shaking Force
data for Geneva mechanism, 96002, 96011, ME3
example for balanced and unbalanced six-bar linkage, 89028
Use as Aid to Selecting a Force or Moment Balancing Method for Linkages, 89043
Use as Guide to Pin Forces on Linkages, 89043
Holes
Aerodynamic and Flow Characteristics
see
Cavities
Excrescences
Pressure Drop in Internal Flow
Cold Working to Improve Fatigue Strength in Steels
general discussion, 89031
lugs, 77017, 82022
Effect on Buckling in Shear of Square Plates
see
Flat Square Plates with Central Circular Hole
Flat Square Plates with Central Flanged Circular Hole
Stress Concentration Data
see
Adjacent Circular Holes in Flat Plates
Circular Holes in Bars or Strips
Circular Holes in Flat Plates
Circular Holes in Orthotropic Plates
Circular Holes in Round Rods and Tubes
Countersunk Holes
Elliptical Holes in Flat Plates
Rectangular Holes in Flat Plates
Reinforced Circular Holes in Flat Plates
Reinforced Circular Holes Near Edge of Flat Plates
Reinforced Elliptical Holes in Flat Plates
Reinforced Square Holes with Rounded Corners in Flat Plates
Reinforced Triangular Holes in Flat Plates
Slots in Bars or Strips
Square Holes with Rounded Corners in Flat Plates
Stress Concentration
Triangular Holes with Rounded Corners in Flat Plates
Honeycomb Sandwich
see
Beams of Sandwich Construction
Curved Sandwich Panels (Cores of Negligible Flexural Stiffness)
Flat Sandwich Panels (Cores of Negligible Flexural Stiffness)
Noise
Sandwich Panels and Plates
Struts of Sandwich Construction
Modal Density, 11008
Horn and Nose Balance
see
Hinge Moment
Hover
Performance Analysis of Turbine Helicopters, 73027
Vectored-Jet-Thrust Aircraft
use of maximum hover weight as performance analysis parameter, 87037
H-sections
see also
Planar Shapes and Sections With/without Holes
Mean Forces Due to Wind or Other Fluid Flows
see
Profile Drag
Sideforce
Strength Analysis
see
Beams in General
Beams of Any Hollow or Solid Polygonal Section
Struts in General
Humidity
Effect of Atmospheric on Fatigue Crack Propagation Rate
aluminium alloy forgings, plate and sheet, 88007
aluminium-lithium alloy plate and sheet, 91015
Effect on Noise Attenuation Within Atmosphere
see
Atmospheric Effects on Sound
Hurricanes
see
Tropical Storms
Hydraulic Jacks
Variation of Buckling Load With Geometry and Stiffness, STRUCT 01.01.24
Hydraulic Oils
Petroleum Based
typical values of density, 71003
typical values of dynamic and kinematic viscosity, 66024, 71003
Synthetic
typical values of dynamic and kinematic viscosity, 66024
Hydrodynamic Bearings
see
Journal Bearings
Self-contained Bearing Assemblies
Thrust Bearings
Hydrogen
Forced Convection Heat Transfer in Ducts
variable gas property effects, 81045, 92003, AERO 00.02.05
Hydroplaning
see
Planing of Aircraft Tyres
Hydrostatic Bearings
see also
Journal Bearings
Journal Type
guide to applications, 65007
Thrust Type
guide to applications, 67033
Hyperbolic Fuctions
Illustrative Sketches of Curves for Use in Curve Fitting or Data Analysis, 01011
Hypersonic Flow
Determination of Airspeed and Mach Number in Flight
using measured static pressure, 88025
using static pressure deduced from ambient temperature and lapse rate, 88025, 93020
Similarity Law for Bodies of Revolution, AERO B.S.02.03.01, AERO B.S.05.03.01
Hysteresis
Representation by Describing Functions
analysis of non-linear systems, 84032

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