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Helicopter Flight Mechanics in Cartoons - a tale of Blade and Wind

(Code: 1076)
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Helicopter Flight Mechanics in Cartoons - a tale of Blade and Wind
Auteurs : Le Maitre Régis, Certain Bernard, Mugglebee John
Publics concernés : specialists, Pilots
Mot clé : hélicoptère
Référence : 1076
I.S.B.N. : 9782364930766

Make no mistake about it,
these cartoons mean business !
Why is a helicopter able to fly ?
What laws govern its flight ?
What can it do... and not do?   
Simple questions, often without simple answers.
The goal of this work is to satisfy in a user-friendly way the curiosity of its readers,
from the aviation buff and student of aeronautics to the helicopter pilot, both trainee and veteran.


One of the most amazing things with helicopters is that we still don't fully know how and why they can fly. This slightly exaggerated statement, especially coming from the head of engineering of a helicopter manufacturer, can anyway illustrate a simple fact : helicopter flight is a complex matter !
I am therefore more than delighted to introduce a book that contradicts this statement, by bringing such a complex explanation to an understandable level, by the use of sketches, drawings and other cartoon items.
When I got the request from Jean-Pierre Marson and saw the performance realised by Regis Le Maitre, Bernard Certain and John Mugglebee, I could not resist, both as an aerospace engineer and a old fan of cartoon, to share this admiration for such a book mixing technical facts, pedagogy and a slice of fun.
I wish such books could be part of our engineer's course, as I wish it would have been available when I was a student and had to endure fascinating but quite tedious lectures on helicopter flight mechanics and associated disciplines.
Even as an ex- military pilot, I do think that this book can bring a lot for a learning pilot as a complement to the quite heavy but mandatory books imposed by our regulations.
It will lead you from the very basic principles of a rotor and the main equilibrium of hover and forward flight, to the trickier phases of the flight implying safety considerations like vortex ring state or autorotation, via a very comprehensive part on the helicopter performance which, after safety, remains the main challenge for any design.
As a conclusion, I let you read this book that mixes the passion for aeronautics, for helicopters in particular, for teaching and learning, and for graphic art.
Enjoy reading as I did, you can only love it !

Jean-Brice Dumont
Airbus Helicopters

THE Vehicle
The Function Shapes the Organ,
Hovering, the Theory
Velocity Field
Rotor Thrust
The Price of Lift
The Main Gearbox
The Aerodynamic Players
The Collective Pitch Control
Rotor Wind
Rotor Wind and the Blade Element
Tail Rotor
Tilting the Rotor
The Lateral Dissymmetry of Relative Win8
The Pendulum
The Flapping Hinge
The Articulated Rotor in Hover
The Articulated Rotor and the Lateral Dissymmetry of Relative Wind
Cyclic Pitch Variation
Cyclic Pitch Variation while Hovering
Cyclic Pitch Variation and the Lateral Dissymmetry of Relative Wind
Cyclic Pitch Control
Articulated Rotor or Rigid Rotor ?
The Drag Hinge
Vibration Absorbers
Equilibrium in Hovering
Equilibrium in Cruising Flight
Autorotation and Relative Wind
Autorotation and Aerodynamic Forces
Eiffel's Polar and Lilienthal's Polar
The Art of Flying
Pilot, Aircraft and Environment
The Piloting System
Attitude Change
Pitch Moment and Roll Moment
Flying in Hover
The Lateral Dissymmetry of Relative Wind
The Lateral Dissymmetry of Relative Wind and Cyclic Action
The Dissymmetry of Induced Velocity
The Positive Effect of Translation
The Negative Effect of Translation
Straight and Level Steady Flight
The Attitude-Speed Relationship
The Power-Speed Curve
Controlling Level Flight
A Question of Power
Vortex Ring
A Zero Sideslip Flight
Ground Effect
Air Referencing and Ground Referencing
The Domain of the possible
The Flight Envelope
Maximum Takeoff Weight
Weight and Balance Limitations
Weight and Balance
Engine, Transmission and Rotor Limitations
Pressure, Temperature and Performance
Pressure, Temperature and Required Power
P/s, M/s
Pressure, Temperature and Available Power
Hover Out of Ground Effect (HOGE)
Hover In Ground Effect (HIGE)
Height-Velocity Diagram
Rate of Climb
Fuel Consumption
Other Limitations
Unusual Situations
The Vortex Ring State
Producing a Vortex
The Vortex Zone
The Dynamic Vortex
Preventing a Vortex from Happening
Recovery from a Vortex
Controlling the Yaw Axis
The Ergonomics of Yaw Control
Integrating a Tail Rotor
The Tail Rotor in Hover
The Tail Rotor in Forward Flight
The Positions of the Rudder Pedals
Tail Rotor and Wind
Tail Rotor Efficiency and Certification
Static Rollover
Dynamic Rollover
Preventing Rollover
Autorotation and Energy
Gliding Angle in Autorotation
Landing in Autorotation