Comparison of vee-type and conventional tail surfaces in combination with fuselage and wing in the variable-density tunnel /
Harry Greenberg.

Description

Main Author

Greenberg, Harry.

Related Names

United States. National Advisory Committee for Aeronautics.

Language(s)

English

Published

Washington D.C. : National Advisory Committee for Aeronautics, 1941.

Subjects

Yawing (Aerodynamics) > Yawing (Aerodynamics) / Measurement.
Pitching (Aerodynamics) > Pitching (Aerodynamics) / Measurement.
Airplanes > Airplanes / Tail surfaces.

Summary

The pitching and yawing moments of a vee-type and a conventional type of tail surface were measured. The tests were made in the presence of a fuselage and a wing-fuselage combination in such a way as to determine the moments contributed by the tail surfaces. The results showed that the vee-type tail tested, with a dihedral angle of 35.3 degrees, was about 71 percent as effective in pitch as the conventional tail and had a yawing-moment to pitching-moment ratio of 0.3. The conventional tail, the panels of which were all congruent to those of the vee-type tail, had a yawing-moment to pitching-moment ratio of 0.48.These ratios are in fair agreement with values calculated by methods shown in this and previous reports. The values of the measured moments were produced from 15 to 25 percent of the calculated value by fuselage interference.

Note

NACA TN no. 815.
"July 1941."

Physical Description

11, [7] p. : ill. ; 27 cm.

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