Victor Duarte
troublemaker
Hello Chuck,
as you know, i find a great interest in your "floating hub rotor" and it happens that a rotor could be built using that system.
If you don't mind (and if you ask no fees ), i'd like to ask you 2 things :
1 - if you could measure it, what was the angle of "flapping" allowed by the bushings ?
2 - did you encouter some "resonnance" due to the bushings ? given that when the bushings get loaded, the blade pitch changes (delta 3 effect), this could decrease the pitch, then the rotor gets less loaded, the pitch increases etc etc, causing a possibly destructive resonnance.
It happenned to a friend whose helicopter entered a vertical resonnance du to the exitement of the gearbox suspensions.
thank you in advance Chuck, as usual.
Victor
as you know, i find a great interest in your "floating hub rotor" and it happens that a rotor could be built using that system.
If you don't mind (and if you ask no fees ), i'd like to ask you 2 things :
1 - if you could measure it, what was the angle of "flapping" allowed by the bushings ?
2 - did you encouter some "resonnance" due to the bushings ? given that when the bushings get loaded, the blade pitch changes (delta 3 effect), this could decrease the pitch, then the rotor gets less loaded, the pitch increases etc etc, causing a possibly destructive resonnance.
It happenned to a friend whose helicopter entered a vertical resonnance du to the exitement of the gearbox suspensions.
thank you in advance Chuck, as usual.
Victor