PPRuNe Forums - View Single Post - Helicopter Dynamics: Gyroscopic Precession
Old 6th Aug 2001, 02:55
  #17 (permalink)  
Dave Jackson
 
Join Date: Nov 2000
Location: Vancouver, BC, Canada
Posts: 452
Likes: 0
Received 0 Likes on 0 Posts
Talking

Nick;

Thanks for your elaboration of the teetering rotor
and your mention of Rotary-Wing Aerodynamics.
You just came up with tonight's reading.

It's surprising what one can learn from a textbook.


By the way, it is because of your previous postings that I have acquired (hopefully?) a better understanding of things like; static mast, anhedral, plus, plus.
Thanks.

___________________

vorticey;

It appears that you want to disassociate the blade's activities from the rest of the rotor's activities. I do not believe that the activities of an individual blade can be related to gyroscopic precession.

In fact, I would guess that the association of gyroscopic precession and the helicopter rotor has come about because people have been thinking in terms of the rotor disk. They envision the rotor-disk as some sort of structural entity, where in reality, it's mostly a bunch of (hot) air.

Gyroscopic precession is probably only active in a rotating body that has absolute rigidity. When one starts to think of the rotor disk as a rotating body, then their thinking starts to get a little tipsy.

If you think that the above is hot air as well, fire back.
Dave Jackson is offline