PPRuNe Forums - View Single Post - Question about dutch roll.
View Single Post
Old 14th Jul 2006, 12:52
  #12 (permalink)  
172_driver
 
Join Date: Jan 2006
Location: Between a rock and a hard place
Posts: 1,277
Likes: 0
Received 0 Likes on 0 Posts
By the way, is it possible to tell if the initial roll will be right or left?

For the situation mentioned above, with a right side slip angle. The yaw into the wind will result in the left wing travelling faster through the surrounding air giving a right roll.

But if the aircraft has dihedral the right wing will get a higher AoA which will tend to give a left roll. Or if the aircraft has swept wings, the right wing will "see" more air giving more lift and a left roll.

So which effect is dominant or maybe it is type specific?

Please be indulgent, I am a bit newish and never learnt the principle behind dutch roll during the theory class
172_driver is offline