[i][c]
Belcher, Bill
(Autopiloten und Windsteuersysteme, Paul Pietsch Verlage, Stuttgart, 1998)
Wind-Vane Self-Steering. How to plan and make your own
International Marine
Camden 1982
ISBN: 0877421587
Cover
#marineria #navigazione:autogoverno
ig01#marineria
ig02#marineria

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  [i][c] INDICE:
7Foreword [ di Herbert George 'Blondie' Hasler ] 
8Preface
9Introduction
                  Historical notes
                  Model yachts
                  Developments 1936-1960
                  Trans Atlantic single handed races
11Part One:Theory and General Principles
13      1Types of self-steering gear
                  Autopilots
                  Sail adjustments
                  Wind vanes
                  Art of self steering
                  Influence of wind direction
                  Boat size and shape
                  Types of wind vanes
                  Types of gear
18      2Theoretical considerations
                  Flat plates
                  Stream line shapes
                  Pressure plotting
                  NACA 0010 foil data
                  Forces on a foil in water or air
                  Lift and drag coefficients
                  Aspect ratio
28      3Wind vanes
            Vertical axis
                  Tabs on trailing edge
                  Test rig
                  Wind Tunnel
                  Test results
                  Standard vane
                  Effect of cutting away part of vane
                  Space considerations
                  Construction materials
                  Balance weight
            Horizontal axis
                  Shape advantage
                  Overall efficency
                  Power proportional to cube of vane size
                  Inclined axis vanes
45      4Course setting
            Vertically pivoted vanes
                  Clamping screw
                  Disc and clamp
                  Drilled disc and pin
                  Latch
                  Worm latch
            Horizontally pivoted vanes
51      5Linkage and feed back
                  Description of feed back
                  Stable and unstable steering
                  Trim tab
                  Pendulum servo
                  Need for two stage operation
                  Geometrical and synthhetic feed back
                  Feed back reduces course accuracy
                  Effect of weights and shock cord
                  Examples of linkage
                  Ratio of vane to rudder movement
                  Use of a cord or wire as linkage
                  MNOP use of levers
62      6Rudders and blades
                  Qualities required
                  Plain, pendulum servo and trim tab rudders
                  Trim tabs
                  On aircraft
                  Development for boats
                  Test rig for trim tabs
                  Results of tests
                  Rudder balance
                  Trim tab size
                  Stalling angle of tab and rudder
                  Efficiency
                  Autoptère
                  Pendulum servo
                  Power servo
                  Power available
                  Hasler gear
                  Aries
                  Saye
81      7Potential devvelopments
                  Windmill
                  Gyroscope
                  Pantograph
                  Epicyclic vane setting
86      8High speed sailing
                  High speed break away
                  Increase of boat speed
                  Drogues
                  Wind vanes
                  Pendulum servo control
                  Wave surfing
                  Control of doubtful use
89      9Types of boat and the best gears for them
92      10Some difficult jobs for self-steering
                  Stiff steering
                  Mizzen over stern
                  Moriah
                  Portofino
                  Stern shape
                  With wind dead aft
97Part Two:Design and Construction
100      11Wind vanes
                  Vertically pivoted wind vanes
                  Horizontally pivoted wind vanes
                  O.G.T. Mark I
                  Mark II
109      12Balanced rudders
115      13Auxiliary rudder with trim tab
                  Autoptère
122      14Pendulum servo gear
128Bibliography
128_

 
 [i][c] CRONOLOGIA:
 
 
2000 2000 2050 Belcher, Bill ( - ) Belcher, Bill ( - ) Belcher, Bill Hasler, Herbert George 'Blondie' ( 1914.0227 - 1987.0505 ) https://en.wikipedia.org/wiki/Herbert_Hasler Hasler, Herbert George 'Blondie' 1814.0227 2119.1006 1982



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