M8 Basic Aerodynamics Sub-Module No 4 (Quiz No 1)

 

8.4 Flight Stability and Dynamics

Quiz

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1. If the aircraft’s speed decreases, As a result of this decreased flow of air over the wing, the downwash is ?
   1.   reduced
   2.   inceased
   3.   produced
2. An aircraft always has the tendency to turn the………... of the aircraft into the relative wind ?
   1.   Right wing
   2.   Lateral axis
   3.   Longitudinal axis
3. The term "Passive Stability" refers to a situation in which the vehicle is naturally ?
   1.   Stable
   2.   Unstable
   3.   Dynamic
4. When the angle of attack decreases the centre of lift moves ?
   1.   Forward
   2.   Aft
   3.   Not moves
5. The aircraft designer must ensure …….. directional stability ?
   1.   Negative
   2.   Positive
   3.   Forward
6. Stability about the aircraft’s vertical axis is called ?
   1.   Lateral stability
   2.   Longitudinal stability
   3.   Yawing stability
7. The most easily achieved stability in aircraft design is ?
   1.   Lateral stability
   2.   Yawing stability
   3.   Longitudinal stability
8. The ………. provides a stable contribution depending on the amount of sweep back ?
   1.   Upper wing
   2.   Lower wing
   3.   Swept wing
9. Longitudinal stability is about ?
   1.   Lateral axis
   2.   Longitudinal axis
   3.   Normal axis
10. Sweepback is an addition to the dihedral that increases the ……..created when a wing drops from the level position ?
    1.   Drag
    2.   lift
    3.   Turbulant air