| This thesis examines the flow effects on a sphere model, in high to medium Reynold's number flow, due to aft-attached plugs. Experiments were conducted to determine the pressure, drag, and the flow characteristics of different sphere-plug configurations. Nine sphere-plug combinations were examined. Although the drag and pressure results varied greatly with differing plugs, the flow characteristics did not. The drag increased with a decreasing plug diameter, while the backpressure did the opposite. Drag also increased with increase of plug length. The flow characteristics, however, only differed significantly when compared to the sphere on its own. |
