Replies

To: UCANSEE2

Coaxial rotors overcome the problem of retreating blade stall and make a tail rotor unnecessary. Ducted fans have their own limitations and problems.

38 posted on 09/07/2013 8:29:29 AM PDT by A.A. Cunningham (Barry Soetoro can't pass E-verify)

To: A.A. Cunningham

Ducted fans have their own limitations and problems

Doesn't every type of propulsion, for automobiles and aircraft, have it's own limitations and problems ?

40 posted on 09/07/2013 5:47:40 PM PDT by UCANSEE2 (The monsters are due on Maple Street)

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