Two-dimensional aerodynamic skin-friction force measured directly. Disk-shaped prototype design has overall dimensions of 1.25 (3.18 centimeters) diameter and 0.5 inch (1.27 centimeters) height. Unique mechanism consisting of two flexural pivoted arms connected in tandem but at right angle with each other designed to impart plane motion needed to sense two-axis flow over sensing element of balance. Sensing element, 0.370 inch (0.940 centimeter) in diameter, attached to end of second arm is servoed by two restoring-force motors orthogonally mounted in plane of airflow. Mechanism allows free plane motion of sensing element with no friction, and balance self-nulled to provide direct plane skin-friction force measurements continuously.
Two-Axis, Self-Nulling Skin-Friction Balance
NASA Tech Briefs ; 10 , 3 P
1986-05-01
Miscellaneous
No indication
English
Self Nulling Hybrid Maglev Suspension System
British Library Conference Proceedings | 1993
|Flight Balance For Skin-Friction Measurements
NTRS | 1989
|NTRS | 2000
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