Measurement of the longitudinal moment of inertia of a flexible airplane /
by Henry A. Cole, Jr., and Frances L. Bennion.

Description

Main Author

Cole, Henry Ambrose Jr.

Related Names

Bennion, Frances L., joint author.
United States. National Advisory Committee for Aeronautics.
United States. National Advisory Committee for Aeronautics.
Ames Research Center.

Language(s)

English

Published

Washington, D.C. : National Advisory Committee for Aeronautics, [1956].

Subjects

Stability of airplanes > Stability of airplanes / Mathematical models.
Stability of airplanes, Longitudinal
Charts, diagrams, etc.
Equations of motion.
Airplanes.
Aeroelasticity.
Moments of inertia > Moments of inertia / Measurement.
Aeronautics > Aeronautics / Research.

Summary

The method of measuring moment of inertia of an airplane by oscillating it on the knife edges and a spring is examined analytically for application to flexible airplanes. First, the equations of motion of a flexible airplane mounted on three supports are presented. Then these equations are examined for conditions required to minimize the difference between the apparent inertia of the flexible airplane and the inertia of the rigid airplane. The analysis is applied to a flexible airplane mounted on various combinations of springs and knife edges. A practical combination is then selected in which the moment-of-inertia correction for flexibility is very small.

Note

NACA Research Memorandum A55J21.
On front cover: "January 20, 1956."
Title from cover.

Physical Description

30 p. : ill. ; 27 cm.

Locate a Print Version

Find in a library

Viewability