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As other answers have said, manned and large drone helicopters have twisted rotor blades. RC helicopters almost all have zero-camber (symmetrical), zero-twist rotor blades. These are almost comically inefficient (the center half of the disk produces almost no lift), leading to typical flight times of five minutes or so. They have the benefit of working ...


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To clarify, the question is apparently asking about the distribution of lift along the length of the blade, rather than across its profile. The question seems to boil down to the following, how to appropriately reference a term for non-uniform thrust loading along the blade, on the one hand, and, on the other hand, that for a design feature to mitigate the ...


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