text: stability. 
  
  CONTRIBUTION OF THE AIRPLANE 
  In order to appreciate the 
  COMPONENTS. 
  development of lateral stability 
  in an airplane, 
  each of the contribution components must be 
  inspected. Of course, there will be interference 
  between the components which will alter the 
  contribution to stability of each component on 
  the airplane. 
  
  to the 
  lateral stability of an airplane is the wing. The 
  effect of the geometric dihedral of a wing is a 
  to lateral stability. As 
  powerful contribution 
  shown in figure 4.28, a wing with dihedral will 
  develop stable rolling moments with sideslip. 
  If the relative wind comes from the side, the 
  wing into the wind is subject to an increase in 
  angle of attack and develops an increase in lift. 
  The wing away from the wind. is subject to a 
  decrease in angle of attack and develops a de- 
  crease in lift. The changes in lift effect a rolling 
  moment tending to raise the windward wing 
  hence dihedral contributes a stable roll due to 
  sideslip. 
  
  The principal surface contributing 
  
  295 