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Article
Trade-off of lifting and propulsion capacity of tandem flap**-fixed airfoils by inclining the stroke plane
A tandem flap**-fixed airfoil configuration with a narrow gap can be found in insects and micro air vehicles (MAVs). Compared to a single flap** airfoil, the interaction between the two airfoils can bring ...
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Article
Volumetric measurement and vorticity dynamics of leading-edge vortex formation on a revolving wing
Leading-edge vortex (LEV) is a hallmark of insect flight that forms and remains stably attached on high angle-of-attack (AoA), low aspect ratio (AR) wings undergoing revolving or flap** motion. Despite the e...
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Article
Effects of kinematics on aerodynamic periodicity for a periodically plunging airfoil
In conventional Micro-Air-Vehicle design inspired by insects, the periodical motion of flap** airfoil usually leads to generation of a periodical aerodynamic force. However, recent studies indicate that time...
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Article
Control for going from hovering to small speed flight of a model insect
The longitudinal steady-state control for going from hovering to small speed flight of a model insect is studied, using the method of computational fluid dynamics to compute the aerodynamic derivatives and the...
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Article
The influence of the wake of a flap** wing on the production of aerodynamic forces
The effect of the wake of previous strokes on the aerodynamic forces of a flap** model insect wing is studied using the method of computational fluid dynamics. The wake effect is isolated by comparing the fo...
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Article
Unsteady aerodynamic forces and power requirements of a bumblebee in forward flight
Aerodynamic forces and power requirements in forward flight in a bumblebee (Bombus terrestris) were studied using the method of computational fluid dynamics. Actual wing kinematic data of free flight were used in...