Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 455
ANATION OF AERONAUTICAL TERMS. Alighting Gear—Devices on the under side of theaeroplane to take np the jar of landing afterflight, and at the same time to check the forwardmotion at that moment. Angle of Entry—The angle made by the tangent tothe curve of the aeroplane surface at its forwardedge,… … ngle of Inci-deTT^e Horizontal Angle of Trail—The angle made by the tangent tothe rear edge of a curved plane with the line oftravel. Apteroid—A form resembling the short andbroad type of the wings of certain birds—asdistinguished from the pterygoid (which see). Arc—Any part of a circle, or other…
Aeronautics
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