text: While a 10 percent increase in  landing 
  
  weight causes : 
  
  a 5 percent higher landing speed 
  a 10 percent greater landing distance, 
  it also produces a 21 percent increase in the 
  kinetic energy of the airplane to be dissipated 
  during the landing roll. Hence, high landing 
  weights may approach the energy dissipating 
  capability of the brakes. 
  
  a 5 percent increase in landing velocity 
  a 10 percent increase in landing distance 
  A contingency of the previous analysis is the 
  relationship between weight and braking ftic- 
  tion force. The maximum coefficient of brak- 
  ing friction 
  independent of the 
  usual range of normal forces and rolling speeds, 
  e.g., a 10 percent increase in normal force would 
  create a like 10 percent increase in braking 
  friction 
  force. Consider the case of two air- 
  planes of the same type and c.g. position but 
  of ~diffetent gross weights. 
  If these two air- 
  planes are rolling along the runway at some 
  speed at which aerodynamic forces are negli- 
  gible, the use of the maximum coefficient of  The s&t of wind on landing distance is large 
  and deserves proper consideration when pre- 
  dicting landing distance. Since the airplane 
  land at a particular airspeed independent 
  will 
  the principal effect of wind on 
  of the wind, 
  landing distance is due to the change in the 
  ground velocity at which the airplane touches 
  down. The effect of wind on acceleration 
  duting the landing distance is identical to the 