text: rates will  require high airspeeds. 
  
  to the high speed is 
  due to the interaction of aerodynamic forces 
  and the elastic deflections of 
  in 
  The deflection of ailerons creates 
  torsion. 
  twisting moments on the wing which can cause 
  significant torsional deflections of the wing. 
  At the low dynamic pressures of low flight 
  speeds, the twisting moments and twisting 
  deflections are too small to be of importance. 
  However, at high dynamic pressures, the 
  deflection of an aileron creates significant 
  
  the wing 
  
  rolling 
  paformance of a low speed airplane. When 
  the ailerons are at full deflection, the maximum 
  roll helix angle is obtained. The rate of roll 
  increases linearly with speed until the control 
  forces increase to limit of pilot effort and full 
  control deflection cannot be maintained. Past 
  
  303 