I would imagine that as it is an aerodynamic force that gives the antitorque ( flow of air around the tailboom ) , for a larger aircraft with more torque you would need a combination of larger diameter tailboom , longer tailboom ( 600 seems kinda long already) or greater air flow . I am sure there is a certain weight where the weight penalties would make the notar impractical . I was told eurocopter tried a fenestron on the Puma without much success. Anyone got any opinion as to if a notar would work on a 430 or S76 ?.
Just read Nicks post on the subject , Nick will they try fan in fin on the S76 ?
[ 21 July 2001: Message edited by: widgeon ]