It is known that an oscillating airfoil can produce a driving force through the generation of a reversed Karman vortex street, and this can be expected to be a new highly effective propulsion system. A heaving airfoil model was made and it was operated within a water channel at low Reynolds number. The dynamic thrust and lift acting on heaving airfoil were measured simultaneously using a 6-axis force sensor based on force and moment detectors. We have been examined various conditions such as heaving frequency and amplitude in NACA 0010 profile. The results showed that thrust coefficient increased with reduced frequency. We also presented the experimental results on the unsteady fluid forces of heaving airfoil at various parameters.(流体工学,流体機械
