 |
 |
|
Hovering Helicopter Rotor Wake.
This is a 3-D plot also known as a "fence" plot. The single rotor blade is shown as well as the motor and counterweight. The rotor is thrusting upwards and the flow passes down through the X-Y plane. Trailing from the tip of the blade is a vortex filament shown by the red line. In contrast to a fixed-wing aircraft, the vortices trailing from a hovering helicopter remain in close proximity to the aircraft lifting surfaces. Slices of the flow field (PIV image frames) are shown at various azimuthal locations with respect to the rotor blade. In each frame contours of vorticity are plotted. The vorticity is computed from the 3-D measurements of the velocity field.
|
|
