CPL PoF stability revision

Stability is:

• The ability of an object to return to its original position after being disturbed.

• The ability of an object to remain balanced from the CoG

• The ability of an object to remain balanced from the CoP

• The ability of an object to remain away from its original postion after being disturbed

Select two types of stability

• Weight stability

• Static stability

• Dynamic stability

• Elevator stability

Static stability refers to:

• The intermediate reaction of a disturbed object

• The subsequent reaction of a disturbed object

• The initial reaction of a disturbed object

• The last reaction of a disturbed object

If an object is disturbed and moves back towards its original position it is said to be:

• Negatively stable

• Positively stable

• Neutrally stable

• Annoyingly stable

Dynamic stability is:

• The initial reaction of a disturbed object

• The last reaction of a disturbed object

• The intermediate reaction of a disturbed object

• The subsequent reaction of a disturbed object

An aircraft that is said to be dynamically stable but not statically stable is:

• A good training aircraft

• A good long range aircraft

• A good short range aircraft

• Not real

With regards to stability and controllability

• An aircraft with high controllability would be highly stable

• Stability and controllability are not related

• An aircraft that is highly controllable would be more unstable than an aircraft that is less controllable

• An airliner needs to be highly controllable

Which aircraft axis does lateral stability refer to?

• Lateral

• Normal

• Lateral stability only refers to helicopters

• Longitudinal

Dihedral will:

• Increase directional stability

• Decrease lateral stability

• Decrease longitudinal stablilty

• Increase lateral stability

Which of the following does not require slip in order to effect lateral stability?

(Tick all that apply)

• Dihedral

• Wing postion

• Sweepback

• Keel surface/fin area