Investigation of the Effect of Control Surface Changes on Aerodynamic Performance of Seaplane Twin Float
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To optimize the design and operation of seaplanes, it is important to understand their aerodynamic characteristics, particularly in the context of the influence of control surface deflections such as flaps, ailerons, elevators, and rudders on aircraft performance. This study uses wind tunnel experiments to analyze the impact of deflections on lift, drag, pitching moment, and stability of the seaplane. The results show that increasing flap deflection increases the lift coefficient (C L ) at low to medium angles of attack, but also increases the drag coefficient (C D ) and accelerates the onset of stall. Aileron deflection affects yaw (C Yaw ) and roll moments (C Roll ), while rudder deflection improves yaw response and directional stability, although it can reduce roll control in sideslip conditions. Elevator deflection increases lift but also increases drag and a more negative pitching moment (C M ). This study provides insights into the optimization of control surfaces design to enhance the efficiency, stability, and operational safety of seaplanes, particularly during take-off and landing phases, and supports the operation of aircraft in Indonesian waters.
