4 ms·
One small propeller is less efficient than one big propeller. What drives the efficiency really is the ratio of propeller surface area to mass. So a lot of smal
by crubier 3y ago
One small propeller is less efficient than one big propeller. What drives the efficiency really is the ratio of propeller surface area to mass. So a lot of small propellers are roughly as efficient as a big one. Actually bonus point for the propellers being twisted, which is not possible on helicopters.