Directional Stability & Control

Directional Static Stability

  1. What is the effect of the fuselage on the directional stability of an airplane?
  2. What is the effect of wing dihedral on the directional stability of an airplane?
  3. What is the effect of wing sweep on the directional stability of an airplane?
  4. Does it make a difference if the sweep is aft or forward?
  5. What is the effect of the vertical stabilizer on the directional stability of an airplane?
  6. What is the effect of a dorsal fin on the directional stability of an airplane?
  7. What is the effect of a ventral fin on the directional stability of an airplane?
  8. Describe any propeller effects on the directional stability of an airplane.

Directional Dynamic Stability

  1. Describe damping in yaw.
  2. Describe directional divergence.
  3. What is adverse aileron yaw and how can it be avoided?
  4. What causes spiral divergence?
  5. Describe spiral divergence.
  6. What causes Dutch roll?
  7. Describe Dutch roll.