I, , . ..v tMAr ArtArrter and gear box was , aquot;v vma#39; lArAre universal application, .1 *^aiUia#39;Al Ar ArvArrAll types of engine . ... The direct control of all the original smaller models, up to a gross weight of approximately 2500 lbs., as in the Kellet KD-1, KD-1B and KD-2, proved to work very well indeed. ... Before all of the problems of direct control and bouncing rotor blades had been solved, Cierva was again engaged inanbsp;...
|Title||:||Journal of the American Helicopter Society|
|Author||:||American Helicopter Society|