Leading/Retreating Rotor Blades
I have been pondering a question for a few weeks now and wonder if any of you very qualified Rotorheads can explain to me the following:- in any helicopter we know that the rotor blades are advancing and at the same time retreating, if a helicopter is flying into on the nose headwind say for example 25knts, if you think of the disc half of it is advancing whilst the other half is retreating, now then add to that the wind velocity of eg 25knts what effect will that have on the retreating blade, will it:-
A. try to push it faster through its cycle of retreat, or
B. have no effect on it whatsoever because the Blade is fastened at the center,
now whilst the wind is trying to push that retreating blade what is it doing to the advancing blade is it:-
A. trying to slow it down, or
B. make no difference because of the blade being joined at the center,
If this wind input affects either advancing or retreating blades will that in itself impart any longitudenal bending to the advancing blade( similar to the bending that occurs when you sweep a stick of wood thu H2o) if this bending takes placewhich part of the length of the blade is then at risk from most cycles of movement, I would assume any direction blade would come under this stress , and would the stress be greater in a two bade rotor, rather than a three or a four blade assembly.
Not being Degree Educated I cannot work this out can you help?
Vfrpilotpb
Let all your landings be little ones!