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Meanwhile Kamov at Army's Cold Weather trials:- Listen with volume on. Too damn funny.

This thread right now:-

My point is how effective the Coanda effect will be at high speeds when helicopter moves forward and how effective it will be for heavier helicopters.

I just read Wikipedia of NOTAR, it says it replaces tail rotor with a fan inside the tail boom whose low pressure high volume airflow is directed out from:- 1.) Coanda vents (utilizing Coanda effect deflecting main rotor downwash across the bottom of tailboom and off to one side to produce...