Transcriber's Note

This book was transcribed from scans of the original found at the Internet Archive.I have rotated some images. The caption for Figure 20 was illegible in the scannedpages so I used a description from a paragraph that referred to it.

DIRIGIBLE BALLOONS

INSTRUCTION PAPER

PREPARED BY

CHARLES B. HAYWARD

MEMBER, SOCIETY OF AUTOMOBILE ENGINEERS; MEMBER, THE AERONAUTICAL SOCIETY;

FORMERLY SECRETARY, SOCIETY OF AUTOMOBILE ENGINEERS; FORMERLY

ENGINEERING EDITOR, "THE AUTOMOBILE"

AMERICAN SCHOOL OF CORRESPONDENCE

CHICAGO ILLINOIS

U.S.A.

COPYRIGHT, 1912, 1918, BY

AMERICAN SCHOOL OF CORRESPONDENCE

COPYRIGHTED IN GREAT BRITAIN

ALL RIGHTS RESERVED

DIRIGIBLE BALLOONS

INTRODUCTION

Of the first attempts of men to emulate the flight of birds, wehave no knowledge, but one of the earliest, perhaps, is embodiedin the myth of Icarus and Daedalus. Xerxes, it is said, possesseda throne which was drawn through the air by eagles. The Chinesehave sometimes been given credit for the invention of the balloon,as they have for many other scientific discoveries. It is related thata balloon was sent up at Pekin incelebration of the ascension of thethrone by an emperor in thebeginning of the fourteenth century.

Fig. 1. De Lana Airboat.
Fig. 1. De Lana Airboat.

Early Attempts. Leonardo daVinci devoted some time to theproblem of artificial flight. Hissketches show the details ofbatlike wings which were to spreadout on the downward stroke andfold up with the upward stroke.

Francisco de Lana planned to makea flying ship the appearance of whichwas somewhat like that shown inFig. 1, by exhausting the air

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