chuter
Platinum Member
I’ve having trouble visualizing something and I’d like to ask some help from anyone who can explain it.
We talk about the “rocking” motion of a HTL gyro without a HS; I’ve experienced this myself and it’s quite obvious.
We say that a gyro in flight moves about its CG.
Straight and level; if it’s moving about the CG, and rocking, wouldn’t that mean that the rotor is going through acceleration/deceleration in relation to the CG? (not rrpm changes, but fore/aft movement of the top of the mast)
Or is the CG accelerating/decelerating and the rotor movement through the air is constant?
Or is it just a higglety-pigglety collection of both?
It seems to me that the rocking motion sort of indicates some pedular action (sorry to bring this up again).
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A while back I brought up the question of relating a powered parachute to our discussions of all flying things rotating about the CG, and trying to make sense of how the PPC does this.
I think it was Udi who said that perhaps the chute is so airspeed-stable that there is actually some pendular motion going on with a PPC.
Is it possible this could apply to our rotors too (to a smaller degree)?
Just trying to put all this together, any help appreciated,
Thanks,
We talk about the “rocking” motion of a HTL gyro without a HS; I’ve experienced this myself and it’s quite obvious.
We say that a gyro in flight moves about its CG.
Straight and level; if it’s moving about the CG, and rocking, wouldn’t that mean that the rotor is going through acceleration/deceleration in relation to the CG? (not rrpm changes, but fore/aft movement of the top of the mast)
Or is the CG accelerating/decelerating and the rotor movement through the air is constant?
Or is it just a higglety-pigglety collection of both?
It seems to me that the rocking motion sort of indicates some pedular action (sorry to bring this up again).
================
A while back I brought up the question of relating a powered parachute to our discussions of all flying things rotating about the CG, and trying to make sense of how the PPC does this.
I think it was Udi who said that perhaps the chute is so airspeed-stable that there is actually some pendular motion going on with a PPC.
Is it possible this could apply to our rotors too (to a smaller degree)?
Just trying to put all this together, any help appreciated,
Thanks,