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Report on Behavior of Aeroplanes in Gusts
Part 1 presents the results of a wind tunnel test of a biplane model with an 18 inch span. The lift, drift, and pitching moment were measured for a series of angles of incidence corresponding to the maximum possible changes of flight attitude. Only the discussion of symmetrical or longitudinal changes is given. From the observed rate of variation of the forces and pitching moment, it was possible to calculate the derivatives needed in the complete theory of longitudinal stability in still air.
Date:
October 7, 1915
Creator:
Hunsaker, Jerome C. & Wilson, Edward Bidwell
System:
The UNT Digital Library
Revision of the American Marmots
Discusses history, nomenclature, common names, habits, external characters, and specimens of American marmots. Describes, lists locations, and provides a key to species and subspecies.
Date:
April 7, 1915
Creator:
Howell, Arthur H.
System:
The UNT Digital Library