[Footnote: *When I suggested that, even though sliding down hill on the air was very nice, it must have been quite a task to carry the machine back to the top of the hill every time, the reply was ...

Tragedy struck in seconds when an American Airlines flight and an Army helicopter collided in the sky, leaving no known ...

Basically, all the other individuals who were interested in the airplane at the turn of the century had thought about the notion of an inherently stable flying machine—a flying machine that ...