Evaluation of Aerodynamic Force and Stress Properties of Propeller of Model Airplane Using by Finite Element Analysis

The purpose of this study is to evaluate propeller safety using three-dimensional finite element method analysis software. We concluded that the propeller is safe for flying. Propeller is indispensable for generating the impellent force. Therefore, safety evaluation of propeller is necessary. The object of the analysis is a propeller for model airplane. The propeller material is carbon fiber reinforced plastics and there is a carbon cross in the one side surface of the propeller. Other parts are formed with resin. The forces acting on a propeller include centrifugal force, air resistance, and vibration by mass imbalance. We analyzed centrifugal force and air resistance in this study. We made analysis model of propeller by ANSYS. Results show, that the maximum principal stress due to centrifugal force was 23.0 MPa. In addition, the maximum principal stress due to aerodynamic force was 2.3 MPa, and the maximum principal stress due to both forces was 24.0 MPa.