Preliminary report on free flight tests

Warner, E P Norton, F H
naca-report-70
1920


Results are presented for a series of tests made by the Advisory Committee's staff at Langley Field during the summer of 1919 with the objectives of determining the characteristics of airplanes in flight and the extent to which the actual characteristics differ from those predicted from tests on models in the wind tunnel, and of studying the balance of the machines and the forces which must be applied to the controls in order to maintain longitudinal equilibrium.

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http://naca.central.cranfield.ac.uk/reports/1920/naca-report-70.pdf