CFRP, wood and plastic are all alternative materials for manufacturing propellers. As for the type of material used in the research, it mainly depends on its physical and mechanical properties, manufacturing method and cost. In this study, the performance of tilting propellers of different materials is compared, and the technology of noise level, durability and stiffness of the three materials is optimized through the comparative test of tilting propellers. Firstly, this article provides a detailed introduction to typical samples of CFRP, wood, and plastics, as well as their physical and mechanical properties and manufacturing processes. Physical and mechanical properties include density, tensile strength, compressive strength, elastic modulus, impact strength and thermal expansion coefficient. Because tilting propeller is an important power plant, its basic performance is silence, and the problem of unstable tilting often fails for a long time. Noise level test checks the noise level of three materials. Further measuring the stiffness after completing the stiffness experiment leads to the reduction of redundant items in the stiffness experiment. The stiffness, noise level and durability of the three materials are compared by statistical software analysis method to evaluate the overall performance of the three materials. The experimental results show that the composite CFRP material is poor in fin material. The maximum noise level of the propeller made of CFRP is only 88dB, the minimum pressure level is 400MPa, and the maximum stiffness is 270 N/mm. In addition, the noise level in the middle position of the propeller is also very low, which means that CFRP has a good potential to be applied to high-performance inclined propellers. Although CFRP is expensive, its excellent performance may make it the most economical choice in the long run. This work provides a scientific method for the material selection and process optimization of tilting rotor, which is helpful to promote the development of propeller aircraft towards more energy-saving and environmental protection.

Guo Qing, Chhim Koucheata, Massood Sharify, Aya Zerhouni Khal, Bun Theavuth Ketekun. Numerical Comparison of Tilt Rotor Propeller Composites Materials of Carbon Fiber-Reinforced Plastic (CFRP), Wood, and Plastic. International Journal of Frontiers in Engineering Technology (2024), Vol. 6, Issue 4: 12-18. https://doi.org/10.25236/IJFET.2024.060403.

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