Talk:Kamov Ka-137

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Rotor

How should the "Main rotor area" be understood? For other helicopters it seems to be the area of a circle having the same diameter as the rotor (area swept by rotor). A 5.3 m rotor would have a rather small blade area but sweep over 22 m2, not 8.3 m2. Either the main rotor area or diameter thus appears to be incorrect. 8.3 m2 would correspond to a diameter of 3.25 m. — Preceding unsigned comment added by 150.227.15.253 (talk) 10:31, 6 October 2016 (UTC)[reply]