RCU Forums - View Single Post - Simple Gyro Building Basics Please
View Single Post
Old 12-30-2005 | 05:24 PM
  #10  
kriegsmacht's Avatar
kriegsmacht
Senior Member
My Feedback: (12)
 
Joined: Dec 2001
Posts: 171
Likes: 0
Received 0 Likes on 0 Posts
From: Castle, OK
Default RE: Simple Gyro Building Basics Please

I seriously have a headache. Ok, I'm getting out the drawing board.

I think I will feel silly after I finally understand because in the end it may be a simple misunderstanding. Which way is positive? Positive collective or positive relative to the body of the plane? Check out the photo links. Which is your setup Mnowell129?

I highly doubt the first photo example would work. This may be what tintrax meant?

http://i5.photobucket.com/albums/y17...ticx/gryo1.jpg

http://i5.photobucket.com/albums/y17...ticx/gyro2.jpg

So, even though the blades have negative pitch collectively, they has positive relative to the plane and therefore make lift, but what about the retreating side? If your mast is tilted back at say 15 degrees, and your advancing blade is set for 7 positive, relative to the plane, when it swings around it will be at 8 negative, relative to the plane? Or would it be 22 negative?

Edit: By the way, which method does the falling seed pod use, autorotation like a true airfoil effect or simple windmilling as I call it, like a box fan in the window on a breezy day. Is the seed pod actually making lift like a gyro or is it just parachuting?