Notes on the Stalling of Vertical Tail Surfaces and on Fin Design
F. L. Thompson · Robert Rowe Gilruth
Jan 1940 · National Advisory Committee for Aeronautics
Ebook
11
Pages
About this ebook
A discussion is given of the important aspects of the stalling of vertical tail surfaces. The type of instability encountered is described and the possibilities of inadvertent occurrence are noted. The influence of directional stability on the behavior of an airplane when the tail stall takes place is discussed. In this connection, flight tests of a twin-engine airplane in which the vertical fin area is increased are cited. The reasons for inadequate directional stability in certain modern designs are accounted for and the properties and application of dorsal fins are discussed. In addition, the chief factors regulating the requirements for conventional fin area given, in which connection a simplified criterion for directional stability is presented.
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