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Flying Machines: Construction and Operation: A Practical Book Which Shows, in Illustrations, Working Plans and Text, How to Build and Navigate the Modern Airship.

  
[title page]
  
PREFACE.
  
IN MEMORIAM.
  
CONTENTS

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EVOLUTION OF TWO-SURFACE FLYING MACHINE. By Octave Chanute.
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CHAPTER II. THEORY, DEVELOPMENT, AND USE.
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CHAPTER III. MECHANICAL BIRD ACTION.
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CHAPTER IV. VARIOUS FORMS OF FLYING MACHINES.
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CHAPTER V. CONSTRUCTING A GLIDING MACHINE.
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CHAPTER VI. LEARNING TO FLY.
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CHAPTER VII. PUTTING ON THE RUDDER.
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CHAPTER VIII. THE REAL FLYING MACHINE.
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CHAPTER IX. SELECTION OF THE MOTOR.
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CHAPTER X. PROPER DIMENSIONS OF MACHINES.
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CHAPTER XI. PLANE AND RUDDER CONTROL.
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CHAPTER XII. HOW TO USE THE MACHINE.
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CHAPTER XIII. PECULIARITIES OF AIRSHIP POWER.
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CHAPTER XIV. ABOUT WIND CURRENTS, ETC.
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CHAPTER XV. THE ELEMENT OF DANGER.
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CHAPTER XVI. RADICAL CHANGES BEING MADE.
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CHAPTER XVII. SOME OF THE NEW DESIGNS.
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CHAPTER XVIII. DEMAND FOR FLYING MACHINES.
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CHAPTER XIX. LAW OF THE AIRSHIP.
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CHAPTER XX. SOARING FLIGHT. By Octave Chanute.
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CHAPTER XXI. FLYING MACHINES VS. BALLOONS.
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CHAPTER XXII. PROBLEMS OF AERIAL FLIGHT.
  
[section]
  
Helicopter Type Useless.
  
Must Compete With Locomotive.
  
Matter of Fuel Consumption.
  
Eccentricities of the Wind.
  
Thinks Use Is Limited.
  
Weight of Lightest Motors.
  
Best Means of Propulsion.
  
Advocates Propellers in Rear.
  
Benefits of Soaring Flight.
  
Main Difficulties in Aviation.
  
Requisites of Flying Machine.
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CHAPTER XXIII. AMATEURS MAY USE WRIGHT PATENTS.
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CHAPTER XXIV. HINTS ON PROPELLER CONSTRUCTION.
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CHAPTER XXV. NEW MOTORS AND DEVICES.
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CHAPTER XXVI. MONOPLANES, TRIPLANES, MULTIPLANES.
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CHAPTER XXVII. 1911 AEROPLANE RECORDS.
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CHAPTER XXVIII. GLOSSARY OF AERONAUTICAL TERMS.

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Advocates Propellers in Rear.

From these curves the diameter and appropriate pitch of a screw could be calculated, and the number of revolutions was then fixed. Thus, for a speed of 80 feet per second the pitch might come out as 8 feet, in which

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case the revolutions would be 600 per minute, which might, however, be too low for the motor. It was then necessary either to gear down the propeller, as was done in the Wright machine, or, if it was decided to drive it direct, to sacrifice some of the efficiency of the propeller. An analogous case arose in the application of the steam turbine to the propulsion of cargo boats, a problem as yet unsolved. The propeller should always be aft, so that it could abstract energy from the wake current, and also so that its wash was clear of the body propelled. The best possible efficiency was about 70 per cent, and it was safe to rely upon 66 per cent.

previous sectionCHAPTER XXII. PROBLEMS OF AERIAL FLIGHT. Flying Machines: Construction and Operation: A Practical Book Which Shows, in Illustrations, Working Plans and Text, How to Build and Navigate the Modern Airship.
next section