TRAILING VORTEX EFFECTS ON LARGE RECEIVER AIRCRAFT

The aerodynamic forces and moments on the Hercules receiver aircraft, due to its horizontal and vertical position and hank, yaw, and pitch a ttitudes in the wake of the KC10 tanker aircraft, are assessed relativ e to the receiver's aerodynamic characteristics in free air. Large cha nges in lift, drag, and pitching moment are predicted near the tanker wake centerline. As the receiver is displaced sideways towards the tan ker wingtip vortices it experiences large side force and yawing moment and particularly high rolling moment. The most significant term due t o the receiver attitude is the rolling moment due to bank.