Methodology for Determining the Survivability and Resistance of Aircraft Propellers to the Impact of Foreign Objects

The authors propose a technique for determining the survivability and resistance of the blades to impact by foreign objects located on the surface of the airfield pavement, using a set of mathematical models and experimental plants and considering the data on the layout and design of the aircraft and its propulsion system with a propeller. An example of the technique’s application to a small-sized aircraft with a propulsion system with a pushing propeller is considered. The results of theoretical studies on determining the boundaries and parameters of the impact of foreign objects with the propeller are presented. Based on the data obtained, experimental studies are conducted to determine damage to the blades made of composite materials by granite particles. The limiting value of the relative mass of a granite particle, which ensures the operability of the propeller during and after the impact is determined. Recommendations on increasing the impact resistance of the blades are given.

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