- A model for neutral static stability is:
- A marble in a bowl
- A cone standing on its base
- A cone balanced on its tip
- A marble on a table top

- If an airplane in equilibrium is disturbed about an axis, positive dynamic stability means that:
- The airplane will return to the initial attitude
- The oscillations about that axis are divergent
- The oscillations about that axis will decay
- The airplane will remain in the new attitude

- A dart is directionally stable because its:
- Center of Mass flies ahead of its tail feathers
- Center of Gravity is behind its Center of Lift
- Moment of Inertia is larger than its mass
- Induction is less than its capacitance

- An airplane can be made directionally stable by:
- Placing more vertical area aft of the Center of Gravity
- Giving the wing leading edges some sweepback
- Both of the above
- None of the above

- An airplane can be designed to be stable longitudinally by:
- Placing the C of G aft of the C of L
- Placing the C of G forward of the C of L
- Having the horizontal tail produce a downforce
- b) and c)

- An aircraft flying with a C of G aft of the limit will:
- Be heavy on the controls
- Possibly be unstable in pitch
- Use more fuel
- None of the above

## Fifty years is not enough

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