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Flight Measurements to Determine Effect of a Spring-loaded Tab on Longitudinal Stability of an Airplane by Hunter, Paul A. is a nonfiction available to read on EtoBox.

What is Flight Measurements to Determine Effect of a Spring-loaded Tab on Longitudinal Stability of an Airplane about?

In conjunction with a program of research on the general problem of stability of airplanes in the climbing condition, tests have been made of a spring-loaded tab, which is referred to as a "springy tab," installed on the elevator of a low-wing scout bomber. The tab was arranged to deflect upward with decrease in speed, which caused an increase in the pull force required to trim at low speeds and thereby increased the stick-free static longitudinal stability of the airplane. It was found that the springy tab would increase the stick-free stability in all flight conditions, would reduce the danger of inadvertent stalling because of the definite pull force required to stall the airplane with power on, would reduce the effect of center-of-gravity position on stick-free static stability, and would have little effect on the elevator stick forces in accelerated flight. Another advantage of the springy tab is that it might be used to provide almost any desired variation of elevator stick force with speed by adjusting the tab hinge-moment characteristics and the variation of spring bobweight, the springy tab would provide stick-free static stability without requiring a pull force to hold th

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Author

Hunter, Paul A.

Publisher

Langley Memorial Aeronautical Laboratory, 1946.

Published

1946

Language

EN

Category

nonfiction