. "NACA Wartime Reports. Series L" . . . . . . . . . . . . "Comparison of yaw characteristics of a single-engine airplane model with single-rotating and dual-rotating propellers" . "Comparison of yaw characteristics of a single-engine airplane model with single-rotating and dual-rotating propellers"@en . "Tests were made n the NACA 29-foot pressure tunnel to determine the yaw characteristics of a 0.32-scale model of a single-engine, fighter-type airplane with six-blade single-rotating and dual-rotating propellers. The propellers used in the investigation were of the same solidity and plan form. Force and moment characteristics of the model, with the exception of the rolling-moment characteristics, are presented for several model and power conditions. Curves are given that show estimated rudder-control characteristics of the design airplane in steady sideslips." . . . . . . . . . . . . . . . . . . . . .