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A comment on U.S. proposes to allow drone operation at night, over people. Parent comment
helicopters with 4x the number of blades
Except a full scale helicopter blade is easily 100 times larger.
So they are helicopters, but 100 times smaller, but with four blades.
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Except a full scale helicopter blade is easily 100 times larger.
So they are helicopters, but 100 times smaller, but with four blades.