  Turbulent flow around a swept back circular cylinder was investigated
experimentally using one or two small sweeping jets emanating tangentially to
the surface and orthogonal to the axis of the cylinder creating a yawing moment
that overcomes the natural restoring force to the plane of symmetry. It appears
from the integral force balance data that large yawing moment coefficients can
be generated in this manner, and the results could be used in the orientation
and attitude control of a refueling boom thus avoiding the H-shape control
surfaces that are currently used on Air Force tankers. The interaction between
the jet and the flow in the lee of the cylinder was mapped using surface oil
flow visualization and 2D-Particle Image velocimetry technique. The sensitivity
of the interaction and its outcome to the change in the azimuthal location of
the actuators was investigated.
