Propeller
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Index Entry
Propeller:
"Let me take one propeller blade by itself. I am going to split it longitudinally and get an S curve, one in which the rates are changing and no power in the curve is the same. So it is asymmetrical by itself: it is repeated six times: positive, negative, positive, negative. . . and the six blades come round in dynamic symmetry. The energy forces involved are in beautiful absolute balance. We have energetic balance."
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