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M
see
Pitching Moment
Pitching Moment Due To Acceleration in Heave (Mw dot or CMα dot)
Pitching Moment Due To Pitching (Mq or Cmq)
Pitching-moment-curve Slope (MW or Cmα)
Mach Cones
Definition, 82020, AERO S.00.03.06
Machined Production Finish
see also
Screw Threads
Splined Steel Shaft Assemblies
Effect on Fatigue Strength of Cast Titanium Alloy (Ti-6Al-4V)
under axial load, 77027
Resulting Surface Roughness, 74027, 94017, 96002
effect on fatigue limit of steels, 74027
Resulting Surface Roughness for Gears, 85027, 89045
Mach Lines
Definition, 82020, AERO S.00.03.06
Machmeter
Calibration Law, 86031
Mach Number
see also
Critical Conditions in Fluid Flow
Kinetic Pressure
Acceleration Experienced in Climb at Constant, 81046
values in Off-Standard and Standard atmospheres, 81046
Effect on Aerodynamic and Flow Characteristics
Equations for Relationship With Calibrated Airspeed, 81046
Measurement in Flight
see
Anemometric Data Correction
Program to Convert Values to Other Airspeed Definitions
aircraft performance program, ESDUperf
in Standard or non-Standard atmosphere, 00031, 00032, 00033, 00034, 00035, 00036, 00037, 00038, 00039
Variation With Calibrated Airspeed and Pressure Altitude, 69026
Variation With Equivalent Airspeed and Pressure Altitude, 69026, 78017
Mach Waves
Definition, AERO S.00.03.06
Magnesium Alloys
Bearing Strength 00932 (MMDH)
Composition of Specific Specifications 00932 (MMDH)
Corrosion Resistance 00932 (MMDH)
Creep Behaviour and Elongation 00932 (MMDH)
Density 00932 (MMDH)
Elastic Moduli in Compression and Tension 00932 (MMDH)
Elastic Modulus of Rigidity 00932 (MMDH)
Electrical Conductivity 00932 (MMDH)
Exfoliation Corrosion Resistance 00932 (MMDH)
Fracture Toughness 00932 (MMDH)
Poisson's Ratio 00932 (MMDH)
Proof Stresses in Tension 00932 (MMDH)
Shear Strength 00932 (MMDH)
Specific Heat Capacity 00932 (MMDH)
Stress Corrosion Resistance 00932 (MMDH)
Tensile Strength 00932 (MMDH)
Thermal Conductivity 00932 (MMDH)
Thermal Expansion Coefficient 00932 (MMDH)
Torsion Strength 00932 (MMDH)
Weldability 00932 (MMDH)
Magnetism
Use in Non-Destructive Examination for Flaws
by measuring flux leakage around defect, 91027
with ferromagnetic particles to define shape and position of defect, 91027
Use in Temperature Measurement
see
Temperature Measurement
Magnification
Linear Systems With Unity Feedback
determination from Hall, Inverse Nyquist and Nichols plots, 74021
Magnification Factor
Linear System
definition, 73011
Magnification of Excrescence Drag By Pressure Gradient
Examples of Use in Calculating Contribution to Drag of Typical Excrescences on Transport Wing, 93032
Factor Applied to Drag of Isolated on Flat Plate to Obtain Drag on Aerofoil
estimation by comparison with calculated values for similar pressure distribution, 87004
program for calculation when pressure distribution alone is known, 91028
representation in computation by momentum thickness increment, 87004, 98031
simplified calculation when pressure distribution alone is known, 91028
use of Nash and Bradshaw equation, 87004, 90029, 91028
use of VGK to determine, 87004, 98031
values for family of aerofoils designed for high drag-rise Mach numbers, 91029
Maneuver
see
Manoeuvre Margin and Point
Manoeuvres
Manoeuvre Margin and Point
see
Longitudinal Stability and Response
Manoeuvres
Aircraft
see
Aerodynamic Loading
Fatigue Loading
Flight Path Optimisation
Pull-out or Pull-up Manoeuvre
Rolling
Sideslipping Flight
Standard Fatigue Loading Sequences
Static Aeroelasticity
Turning Manoeuvre
Manoeuvres performed to derive aircraft performance model from flight test data, 15001, TM 190
Manufacturing Processes
see also
Machined Production Finish
Roughness
Surface Treatments
Tolerances
Considerations in Design Against Acoustic Fatigue, 86025
Effect on Fatigue Strength, 70018
Maraging Steels
see also
Steels
Fatigue Crack Propagation Rate
see also
Crack Propagation
characteristic slopes of plots against stress intensity factor, 84003
effect of alloy composition and heat treatment, 84003
effect of mean stress (or stress ratio), 84003
Fatigue Strength at High Endurance
relationship with tensile strength for unnotched specimens, 88008
Fatigue Strength Under Bending, 71027
effect of notches, 71027
relationship with tensile strength, 71027
Fracture Toughness
variation with temperature, 83023
Marginal Probability Distribution
see
Statistics
Margins
see
Longitudinal Stability and Response
Markov Process
Definition, 83041
Martensitic Stainless Steels
see also
Steels
Fatigue Crack Propagation Rate
see also
Crack Propagation
characteristic slopes of plots against stress intensity factor, 84003
effect of alloy composition and heat treatment, 84003
effect of mean stress (or stress ratio), 84003
Fatigue Strength Under Bending, 71027
relationship with tensile strength, 71027
Fracture Toughness
variation with temperature, 83023
Threshold Stress Intensity Factor Range, 84003
effect of mean stress (or stress ratio), 84003
Mass Flow in Ducts
Compressible Single-Phase Flow Equations and Curves
see
One-dimensional Flow
Mass Flow in Intakes
see also
Cowls
Axisymmetric
ratio for onset of spillage on all cowls, 84004
ratio for onset of spillage on NACA 1-series cowls, 81024
Rectangular External-Compression Double- or Single-Ramp
critical operation, 75005
sidespillage effect, 75005
Mass Flow in Turbo-fan and Turbo-jet Engines
see also
Inoperative Engine
One-dimensional Flow
Windmilling Engines
Measurement in Flight
curves for use in data analysis, 69008
gas generator method, 69007
introduction to Data Items on, 69006
rake traverse method, 69007
static pressure and total head sampling methods, 69007
Mass Flowmeters
Pressure Drop Across, 66030
Masts
Dynamic Response to Turbulence and Wind
see
Response of Buildings and Structures
Response of Buildings and Structures To Atmospheric Turbulence
Response of Buildings and Structures To Vortex Shedding
Mean Forces, Moments and Pressures Due to Wind
see
Axial Force
Base Pressure
Bluff Bodies
Normal Force
Overturning Moment on Surface-mounted Structures
Pressure Distribution
Profile Drag
Sideforce
Torsional Moment on Structures
Vortex Shedding
Mechanical Vibration Characteristics
see
Buildings
Materials Properties
see also
Aluminium Alloy Sheets
Aluminium Alloys
Copper Alloys
Dry Rubbing Bearings
Fracture Toughness
Gears
Helical Springs of Round Wire
Journal Bearings
Magnesium Alloys
Nickel Steels
Refractory Lining Materials
Steel Sheets
Steels
Thrust Bearings
Titanium Alloy (Ti-10V-2Fe-3Al)
Titanium Alloy (Ti-11Sn-5Zr-2Al-1Mo)
Titanium Alloy (Ti-2.5Cu)
Titanium Alloy (Ti-4Al-3Mo-1v)
Titanium Alloy (Ti-4Al-4Mo-2Sn-0.5Si)
Titanium Alloy (Ti-4Al-4Mo-4Sn-0.5Si)
Titanium Alloy (Ti-5Al-2.5Sn)
Titanium Alloy (Ti-6Al-2Sn-2Zr-2Mo)
Titanium Alloy (Ti-6Al-2Sn-4Zr-2Mo)
Titanium Alloy (Ti-6Al-2Sn-4Zr-6Mo)
Titanium Alloy (Ti-6Al-4V)
Titanium Alloy (Ti-6Al-5Zr-0.5Mo-0.25Si)
Titanium Alloy (Ti-6Al-6V-2Sn)
Titanium Alloy (Ti-8Al-1Mo-1V)
Titanium Alloys
Wear Resistant Surface Coatings and Treatments
Comparison of Various for Ceramic, Metallic and Polymer Materials, 84041
Density and Melting or Softening Temperature
various ceramic, metallic and polymer materials, 84041
Effective Young's Modulus for Various Materials in Contact, 85027, 89045, 94017
Effect of Composition on Fatigue Crack Growth Rate
see
Aluminium Alloy Bars and Plates
Aluminium Alloy Forgings
Aluminium Alloy Sheets
Aluminium-Lithium Alloy Plates and Sheets
Austenitic Stainless Steels
Duplex Stainless Steels
High Alloy Steels
High Tensile Low Alloy Steels
Low Tensile Low Alloy Steels
Maraging Steels
Martensitic Stainless Steels
Precipitation Hardening Stainless Steels
Generalised Stress-Strain Curves, 76014, 76016, 89052
approximate equations for stress at given strain or given stress-to-tangent modulus ratio, 76016
equations for, 76016, 89052
method of determination from limited materials data, 76016
program to compute from modulus and two inelastic points, 89052
program to compute stress at given strain or given stress-to-tangent modulus ratio
use to determine plasticity effects for plate buckling, 83044
variation of Poisson's ratio in inelastic region, 76016
Introduction to Data in Handbook 00932 (MMDH)
Layered Materials Used to Increase Structural Damping
variation of loss factor and modulus with frequency and temperature, 92001
Limitations on and Variations of Allowable Stress Data
effects of directionality, material form and other factors 00932 (MMDH)
Parameter Relationships Used to Derive Data in Handbook
general values for bearing, shear and tension ratios 00932 (MMDH)
use of particular relationships 00932 (MMDH)
Poisson's Ratio
estimated values for metallic materials in inelastic region, 76016, 89052
various ceramic, metallic and polymer materials, 78035, 84041, 85027
various metallic and polymer materials, 94017, 96002
Secant Modulus
definition, 76016
Specific Heat Capacity
various ceramic, metallic and polymer materials, 84041
Standardised Test Procedures 00932 (MMDH)
temperature measurement and calibration 00932 (MMDH)
Statistical Derivation of Design Values 00932 (MMDH)
Tangent Modulus
relationship to secant modulus for generalised stress-strain curve, 76016, 89052
Temper Designation System Used in Handbook 00932 (MMDH)
Thermal Conductivity
various ceramic, metallic and polymer materals, 84041
Thermal Expansion Coefficient
various ceramic, metallic and polymer materals, 84041
Young's Modulus
various ceramic, metallic and polymer materials, 78035, 84041, 85027
various metallic and polymer materials, 94017, 96002
various piping materials, 83046, 87027
Mathematics
see also
Curve Fitting
Differential Equations
Quadrature
Statistics
Introduction to Modelling a Physical System, 80018
Optimisation By Multivariate Gradient-Search Techniques
basis of method and need to set tolerance on result, 94012
Maximum Climb and Descent Rates
see
Rate of Climb
Rate of Descent
Maximum Lift
Aerofoils at Mach Numbers From 0.6 to 0.75, AERO W.01.01.07
Aerofoils in Low-Speed Flow, 84026, 93015
angle of attack for, with or without high-lift devices deployed, 96003
effect of leading-edge roughness, 84026, 93015
increment due to double-slotted flaps, alone or with leading-edge devices, 94027, 94031
increment due to leading-edge slotted or unslotted high-lift devices, 94027
increment due to plain flaps, alone or with leading-edge devices, 94027, 94028
increment due to single-slotted flaps, alone or with leading-edge devices, 94027, 94030
increment due to split flaps, alone or with leading-edge devices, 94027, 94029
increment due to triple-slotted flaps, alone or with leading-edge devices, 94027, 94031
increment due to vented or unvented Kruger flaps, 94027
Introduction to Data Items on Effect of High-Lift Devices on
aerofoils, 94026
wings, 97002
Wings With Leading-Edge Part- or Full-Span High-Lift Devices
angle of attack for, 96003
slotted or unslotted, or vented or unvented Kruger, 92031
Wings With Spanwise Camber and Twist Distribution
swept or unswept in subcritical flow without high-lift devices, 89034, 93015
Wings With Trailing-Edge Part- or Full-Span High-Lift Devices
angle of attack for, 96003
plain, slotted or split flaps with leading-edge high-lift devices, 92031
plain, slotted or split flaps without leading-edge high-lift devices, 91014
Maximum Principal Strain Criterion -
Maximum Shear Strain Criterion -
Maximum Speed
see
Speed
Maximum Strain Energy Criterion -
Mean
Determination With Specified Confidence for Population From Sample Value
using Student's t distribution, 91017, 91018, 91041
Mean Aerodynamic Chord
Definition, 10023, 76003, TM 168
Mean Flow Properties
Steady, Spatially Non-Uniform Axial Compressible Flow Using Thermodynamically-Rigorous Approach
definition of reference set for calorically-perfect gas, 95011
definition of reference set for thermally-perfect gas, 97029
Mean Free Path
Variation With Altitude in Model Atmosphere, 77021
Mean Stress
Definition, 70016
Effect on Fatigue Crack Propagation Rate
see
Aluminium Alloy Bars and Plates
Aluminium Alloy Forgings
Aluminium Alloy Sheets
Aluminium-Lithium Alloy Plates and Sheets
Austenitic Stainless Steels
Duplex Stainless Steels
High Alloy Steels
High Tensile Low Alloy Steels
Low Tensile Low Alloy Steels
Maraging Steels
Martensitic Stainless Steels
Precipitation Hardening Stainless Steels
Titanium Alloy (Ti-2.5Cu)
Titanium Alloy (Ti-4Al-4Mo-2Sn-0.5Si)
Titanium Alloy (Ti-5Al-2.5Sn)
Titanium Alloy (Ti-6Al-4V)
Titanium Alloy (Ti-6Al-6V-2Sn)
Titanium Alloy (Ti-8Al-1Mo-1V)
Titanium Sheets
Effect on Fatigue Limit
see
High Tensile Low Alloy Steels
Low Tensile Low Alloy Steels
Effect on Fatigue Strength
see also
Aluminium Alloys
Low-load Transfer Joints in Aluminium Alloys
Lugs (Fatigue Strength)
Riveted Lap Joints in Aluminium Alloy Sheets
Screw Threads
Titanium Alloy (Ti-5Al-2.5Sn)
Titanium Alloy (Ti-6Al-4V)
Titanium Alloy (Ti-6Al-6V-2Sn)
Welded Joints in Steels
Welded Longitudinal Joints in Aluminium Alloys
Welded Longitudinal Joints in Steels Under Axial Loading
Welded Transverse Joints in Aluminium Alloys
Welded Transverse Joints in Steels Under Axial Loading
Welded Transverse Joints in Steels Under Bending
design calculations, 75022
notched specimens (semi-range/mean stress diagram), FAT A.00.02
unnotched specimens (semi-range/mean stress diagram), FAT A.00.01
use of appropriate constant amplitude data in cumulative damage calculations, 95006
Effect on Fatigue Strength Under Acoustic Loading
see
Skin-rib Joints in Aluminium Alloys
Effect on Fatigue Strength When Component is Subject to Fretting, 90031
Measurement of Aircraft Performance
see
Accelerometers
Aircraft Performance Analysis
Aircraft Performance Reduction
Anemometric Data Correction
Axes Systems in Aircraft Dynamics and Performance
Flight Testing
Helicopter Performance Analysis
Mechanisms
see
Balancing of Linkages
Cams
Cams with Domed or Flat-faced Followers
Cams with Swinging Roller Followers
Cams with Translating Roller Followers
Contact Phenomena
Crank-rocker Mechanisms
Elastohydrodynamic Lubrication
Epicyclic Gear Train
Force Balancing of Linkages
Gears
Geneva Mechanisms
Helical Springs of Round Wire
Linkages
Mechanisms Series
Moment Balancing of Linkages
Reduction of Torque Fluctuation in Linkage Drive Shafts
Slider-crank Mechanisms
Mechanisms Series
Location of Items in ESDU Series, 00004
Record of Amendments ot Items in ESDU Series, 00004
Medium-load Transfer Joints in Aluminium Alloys
see also
Fretting Fatigue
Fatigue Strength Under Variable Amplitude Axial Loading
effect of alloy composition, 90009
effect of different fastener types, heads and materials, 90009
effect of fit, 90009
effect of initial corner cracks, 90009
effect of plate thickness, 90009
effect of various interfay treatments, 90009
Melting
see
Melting Point
Softening and Melting
Melting Point
Various Materials
ceramic, metallic and polymer, 84041
Meters
Flow Measuring
classification of types, 66030
pressure drop data for range of types, 66030
Methanol
see also
Heat Pipes
Density
pressure and temperature variation for saturated gas and liquid, 80017
Dynamic Viscosity
pressure and temperature variation for saturated gas and liquid, 80017
Specific Heat Capacity
pressure and temperature variation for saturated liquid, 80017
Specific Latent Heat of Vaporisation
pressure and temperature variation at saturation, 80017
Surface Tension
pressure and temperature variation at saturation, 80017
Thermal Conductivity
pressure and temperature variation for saturated liquid, 80017
Vapour Pressure
pressure and temperature variation at saturation, 80017
Metric Units
see
Conversion Factors
Metzner-reed Flow Curve Model
see
Non-newtonian Fluids
Milk
see
Cow's Milk
Milled Production Finish
Resulting Surface Roughness for Steels, 74027
effect on fatigue limit, 74027
Miner's Rule
see
Fatigue Under Variable Amplitude Loading
Minhinnick Flutter Derivatives
see
Flutter Derivatives
Minimum Weight Design
see
Flat Panels with Unflanged Integral Stiffeners
Flat Sandwich Panels (Cores of Negligible Flexural Stiffness)
Helical Springs of Round Wire
Struts of I-section
Struts of Tubular Section
Mises-henky Criterion of Yielding -
Mixed Forced-free Convection Heat Transfer
Reynolds-Prandtl Number Regimes for in Horizontal or Vertical Circular-Section Ducts
laminar or turbulent flow, 92003
Mixing
see
Boiling Flow in Pipes
Fouling in Crude Oil Distillation Plant
Jet Mixing
Mixtures
see
Boiling Flow in Pipes
Falling Film Evaporation
Modal Density
Acoustic Spaces, 13003
Beams in Bending, 11008
Bolotin's Method, 11009
Circular Plates, 11008
Curved Panels, 11009
Definition, 78004, 97033
Equation for Beam in Bending, 99009
Equation for Plate in Bending, 99009
Rectangular Enclosure, 13003
Rectangular Plates, Isotropic, 11008
Rectangular Plates, Specially Orthotropic, 11008
Sandwich Panels, 11008, 11009
Unstiffened Thin-Walled Circular-Cylindrical Shells, 78004
Modal Overlap
Relationship With Modal Density and Loss Factor, 97033, 99009
Model Testing
see
Dynamical Similarity
Wind-tunnel Corrections for Aerofoils
Wind-tunnel Corrections for Bluff or Quasi-streamlined Bodies
Wind-tunnel Corrections for Wings
Wind-tunnel Testing
Modes
see also
Normal Mode Analysis
Acoustic
rectangular enclosure, 13003, 15011
Coupled
definition, 66013
For Lateral and Longitudinal Motion of Aircraft, 86021
desirable characteristics for good handling qualities, 92006
Fundamental
definition, 66013
Linear System
calculation, 74019
determination of damping from frequency response measurements, 90006, 93016
determination of dominant, 80002
determination of natural frequency from frequency response measurements, 90006, 93016
sensitivity to changes in system parameters, 80018
Normal
definition, 66013
use in analysising deformation of flexible aircraft, 99033
Use of Built-In Cantilever Beam Bending and Twisting
in static aeroelastic stability analysis, 97032
Use of Orthogonal in Analysing Deformation of Flexible Aircraft, 97032
Use to Define Trial Functions in Structure Modelling for Dynamic Response, 97033
Vibration
see
Buildings
Curved Rectangular Plates
Cylinders of Circular Section (Strength and Vibration)
Flat Panels in General
Pipes with Internal Flow
Response of Buildings and Structures
Response of Buildings and Structures To Atmospheric Turbulence
Response of Buildings and Structures To Vortex Shedding
Moduli of Elasticity
see also
Adhesives for Bonded Joints
Aluminium Alloys
Copper Alloys
Damping
Magnesium Alloys
Nickel Steels
Secant Modulus
Steels
Tangent Modulus
Titanium Alloys
Effective Values for Components in Contact, 85027, 89045, 94017
Values for Various Ceramic Materials, 78035, 84041, 85027
Values for Various Metallic and Polymer Materials, 78035, 84041, 85027, 94017, 96002
Values for Various Piping Materials, 83046, 87027
Mohr Circle
Analysis of Strain Gauge Rosette Data, 72014
Mollier Chart
Air in Dissociation Equilibrium, AERO 00.01.11, AERO 00.01.12
Application to Steady, Spatially Non-Uniform Axial Compressible Flow
calorically-perfect gas, 95011
thermally-perfect gas, 97029
Examples in Use of, AERO S.00.03.27
Moment Balancing of Linkages
see also
Balancing of Linkages
Linkages
Advantages and Limitations of Various Methods Singly or in Combination
counterweights, 89043
duplicate linkage added with mirror-image symmetry, 89043
dyad added, 89043
inertia counterweights, 89043
Lanchester Balancer, 89043
moment balancer, 89043
Use of Constant Speed Rotating Counterweights For Partial Balance of Planar Linkages
alignment and mass of pair of weights rotating in same direction, 90007
alignment, mass and location of generalised Lanchester Balancer, 90007
Moment of Area Rule
Moment of Area Rule, AERO A.S.02.03.01
Moments
Aerodynamic
expressed as expansion in terms of small perturbations, 67003, 86021
functional dependence, 86021
Axes Transformation, 67004, 67036, 78038, 82031, 85030, 86041
Due to Internal Flow, 81004
On Aircraft and Components
see
Aerodynamic Loading
Bending Moment
Flutter Derivatives
Ground Performance in Take-off and Landing
Hinge Moment
Pitching Moment
Pitching Moment Due To Acceleration in Heave (Mw dot or CMα dot)
Pitching Moment Due To Pitching (Mq or Cmq)
Pitching-moment-curve Slope (MW or Cmα)
Rolling Moment
Rolling Moment Due To Rolling (Lp or Clp)
Rolling Moment Due To Rudder Deflection (Lζ or Cl Δ r)
Rolling Moment Due To Sideslip (Lv or Cl β)
Rolling Moment Due To Yawing (Lr or Clr)
Similarity Laws
Yawing
Yawing Moment Due To Aileron Deflection (Nξ or CnΔa)
Yawing Moment Due To Rolling (Np or Cnp)
Yawing Moment Due To Rudder Deflection (Nζ or CnΔr)
Yawing Moment Due To Sideslip (Nv or Cnβ)
Yawing Moment Due To Yawing (Nr or Cnr)
On Buildings and Structures Due to Wind or Other Fluid Flows
see
Bending Moment
Overturning Moment on Surface-mounted Structures
Pitching Moment
Rotational Moment
Torsional Moment on Structures
Moments of Area of Planar Shapes and Sections With/without Holes
Program for Calculation of First and Second and Radii of Gyration
in arbitrary or principal axes, 02007, TM 119
Program for Calculation of Polar and Product
in arbitrary or principal axes, 02007, TM 119
Momentum Drag
Turbo-Jet Engines
see
Intrinsic Momentum Drag
Standard Momentum Drag
Momentum of Flow in Ducts
Compressible Flow Equations and Curves
see
One-dimensional Flow
Multhopp's Lifting-surface Theory -
Multigrade Oils
see also
Lubricants
Definition, 71003
Multi-tube Heat Exchangers
see
Double-pipe Heat Exchangers
Heat Exchangers
Multivariate Optimisation
see
Aerofoils
Flight Path Optimisation

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