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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.
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CHAPTER XXIII. AMATEURS MAY USE WRIGHT PATENTS.
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CHAPTER XXIV. HINTS ON PROPELLER CONSTRUCTION.
  
[section]
  
What the Designers Seek.
  
Terms in General Use.
  
When Pitch Is Not Uniform.
  
Effect of Non-Uniformity.
  
Why Blades Are Curved.
  
How to Determine Angle.
  
Relation of Diameter to Circumference.
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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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previous sectionCHAPTER XXIV. HINTS ON PROPELLER CONSTRUCTION. Flying Machines: Construction and Operation: A Practical Book Which Shows, in Illustrations, Working Plans and Text, How to Build and Navigate the Modern Airship.
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How to Determine Angle.

To find the angle for the proper pitch at any point in the diameter of a propeller, determine the circumference by multiplying the diameter by 3.1416, which represent by drawing a line to scale in feet. At the end of this line draw another line to represent the desired pitch in feet. Then draw a line from the point representing the desired pitch in feet to the beginning of the circumference line. For example:

If the propeller to be laid out is 7 feet in diameter, and is to have a 7-foot pitch, the circumference will be 21.99 feet. Draw a diagram representing the circumference line and pitch in feet. If this diagram is wrapped around a cylinder the angle line will represent a true thread 7 feet in diameter and 7 feet long, and the angle of the thread will be 17 3/4 degrees.

previous sectionCHAPTER XXIV. HINTS ON PROPELLER CONSTRUCTION. 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