Johnny_J
Second Officer
Sweden
Offline
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GaryDoug Posted at 8-9 18:37
What is the advantage with the 3-blade props? Do they supposedly make for better reliability? Maybe if one breaks, the other two keep going?
Three blades gives better grip in the air but also a higher air resistance and thus draws more current from the battery.
Compare with boats. They normally have three blade propellers. Some high-power boats use 4-blade propellers. Much more grip and acceleration but also higher fuel consumption.
The area of the blades gives friction, give it being air or water. It is always a compromise between performance and economy. |
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