Without a doubt, they’re the hardest-working, most under-appreciated part of your airplane. Of course, I’m talking about your propeller.
Most of us just think of a propeller as a chunk of aluminum spinning around on the front of our airplane. How wrong we are. Your propeller is one of the most highly stressed components on your airplane. During normal operation, it has to withstand 10 to 20 tons of centrifugal force that is trying to pull the blades right off the hub.
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