GrantR
Well-Known Member
Does Spiral stability / instability have any affect on an airplane's tendency to enter a spin and recover?
Most GA airplanes are slightly spiral unstable meaning that they will enter a spiral dive from a banked attitude.
Spiral stable airplanes are not likely to enter a spiral dive from a bank however I read that once they are in a spiral dive it can be difficult to get them out of the dive. Some WW1 planes had this problem.
So is a 2 axis airplane like a weedhopper or skypup spiral stable? I would then think a low wing plane will little to no dihedral would be a bit spiral unstable.
It seems like the low wing plane wound be more spin prone than the skypup or weedhopper.
Grant
Most GA airplanes are slightly spiral unstable meaning that they will enter a spiral dive from a banked attitude.
Spiral stable airplanes are not likely to enter a spiral dive from a bank however I read that once they are in a spiral dive it can be difficult to get them out of the dive. Some WW1 planes had this problem.
So is a 2 axis airplane like a weedhopper or skypup spiral stable? I would then think a low wing plane will little to no dihedral would be a bit spiral unstable.
It seems like the low wing plane wound be more spin prone than the skypup or weedhopper.
Grant
