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The First Twenty Centuries
The Invention of the Globes Aerostatiques
Historic Early Flights
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achieved aerial Aeronautical airplane airship altitude American apparently ascent attempt August aviation balloon began Blanchard brothers built carried Cayley Chanute complete construction continued Count course craft crossing developed diameter direction distance early engine England English entire experiments feet Field fire flight flying forced France French further George Cayley German glider ground helicopter horizontal horsepower hydrogen idea July June landing Langley later less lift Lilienthal London machine means mechanism miles miles per hour minutes monoplane motor navigation October operator ornithopter parachute Paris passenger pilot plane possible pounds practical present produced propeller proposed reached record Report scientific September ship speed square feet stability steam successful sufficient suggestion supplied surface took traveled trial United voyage wind wings World Wright Wright brothers York Zeppelin