Non-Stationary Motion of Purely Supersonic Wings

Author: Froehlich, Jack Edward

Year: 1950

Degree: Dissertation (Ph.D.)

Advisor: Stewart, Homer Joseph

Committee Member: Unknown, Unknown

Option: Aeronautics; Mathematics

DOI: 10.7907/FCGZ-7P23

Abstract

A general theory is presented for the calculation of the total forces acting on purely supersonic wings. The method applies to wings having an arbitrary downwash distribution (stationary or non-stationary) and is valid whenever all of the wing edges are supersonic. The general three-dimensional non-stationary problem is reduced to an equivalent two-dimensional problem. In the case of harmonic oscillations the aerodynamic coefficients are expressed in terms of known or tabulated functions. The specific example of an oscillating delta wing is considered and values of the aerodynamic coefficients for plunging, pitching, and rolling oscillations are calculated for two Mach numbers.

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