A DESCRIPTION OF FOUR WIND-TUNNEL DYNAMIC MEASURING TECHNIQUES.
Research and development rept.,
DAVID TAYLOR MODEL BASIN WASHINGTON D C AERODYNAMICS LAB
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Results of a study comparing the damping-in-pitch parameter as obtained from four experimental techniques are presented. Each of the methods is briefly described and measured values given. The four methods used were a single degree-of-freedom free oscillation, a single degree-of-freedom forced oscillation, a three-degree-of-freedom free oscillation, and a free-flight scheme. The damping-in-pitch compares reasonably well, though some data scatter exists. The forced oscillation measurements are shown to yield the more consistent values. All of the experimental schemes are shown to yield highly accurate static force and moment coefficient slopes. Author
- Test Facilities, Equipment and Methods
- Fluid Mechanics