des R

The static margin is equal to the distance between

• The AC and the NP

• . the CG and the AC

• The CG and the NP

• The CG and the CG datum point

How does center of gravity range affect elevator trim range?

• Forward center of gravity increases elevator trim range

• Aft center of gravity increases elevator trim range

• Elevator trim is independent of center of gravity

• Center of gravity has no effect on elevator trim

What is the purpose of trimming an aircraft?

• To reduce airframe stress

• To maintain steady level flight

• To adjust center of gravity changes

• To increase fuel efficiency

An aircraft is constructed with dihedral to provide

• Lateral stability about the longitudinal axis

• lateral stability about the normal axis

• directional stability about the normal axis

• longitudinal stability about the lateral axis

What mode is illustrated by a non-cyclic increase of amplitude with time?

• Static instability

• Convergence

• Dynamic instability

• Divergence

It consists of rapid pitch oscillations during which the airplane is constantly being restored towards equilibrium by static stability

• Phugoid

• Dutch roll

• Spiral Divergence

• Short Period Oscillations

What is the effect of altitude to dynamic stability?

• Altitude has no effect to dynamic stability

• Dynamic Stability is increased

• Dynamic stability is reduced and increased

• Dynamic stability is reduced

If a disturbing force causes aircraft to roll:

• dihedral will cause a nose up pitching moment

• wing dihedral will cause a rolling moment which reduces sideslip

• the fin will cause a rolling moment which reduces sideslip

• dihedral will cause a yawing moment which reduces the sideslip

How does an aircraft's weight affect its maneuverability?

• Heavier aircraft are more maneuverable

• Weight has no effect on maneuverability

• Lighter aircraft are more maneuverable

• Maneuverability depends solely on engine power

It is a term used to describe a system which is given an initial disturbance, and the motion simply subsides without oscillation

• deadbat return

• static

• subsidence

• divergence