Abstract Unsteady aerodynamic force refers to the that magnitude and direction of load borne by aircraft will change with time during flight. Usually, simulation unsteady is completed wind tunnel test. This paper introduces a new method based on electromagnetic field Ampere force. Compared traditional test method, greatly reduce cost make it possible repeat multiple tests. In order verify wheth...

The downstroke-to-upstroke transition of many insects is characterized by rapid wing rotation. The aerodynamic consequences of these rapid changes in angle of attack have been investigated using a mechanical model dynamically scaled to the Reynolds number appropriate for the flight of small insects such as Drosophila. Several kinematic parameters of the wing flip were examined, including the sp...