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HISTORY OF BALLOONING
PRINCIPLES OF BALLOONING
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aerial craft aerial navigation aero aeronaut aeroplane airship altitude aluminium angle apparatus ascend atmosphere aviator ballast ballonnet balloonist biplane birds box-kite captive balloons carry Chanute CHAPTER Chatham Dockyard cloth clouds coal gas Coloured course cubic feet curve descending Diagram direction dirigible balloon distance driven earth Edition effect electric elevator engine entering edge envelope equilibrium experiments Extra crown 8vo feet in diameter feet long flying flying-machine France front gas-container gas-envelope German gliding ground half-linen Henry Giffard horizontal planes hydrogen Illustrations increased kite Lancelot Speed land large number lifting lifting-power machine main planes means mechanical flight miles an hour miles per hour military Monoplane motor movement necessary nett observations ordinary Plates possible pounds propellers rear rudder sewed side soaring speed spherical balloon square feet stability steering Super-royal 8vo surface tail temperature tilt tion TO-DAY upward various velocity vertical rudder vessel voyage weight wind wings Zeppelin