Quantcast Fig 5:  Center of Gravity Travel

 

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Stability
T-45A/C TS, E2C2, ADV & IUT Aero-04
Figure 5: CENTER OF GRAVITY TRAVEL
N.
Aerodynamic Center (AC)
Sg 2, fr 14
Center of Gravity/
Aerodynamic Center
1.
Point along chord where all changes in lift effectively
Relationship to Stability
take place
2.
Aerodynamic Center forms moment arm with CG
that affects aircraft performance
a.
When AC is far aft of CG the aircraft is very
stable but less maneuverable
b.
When AC moves forward, closer to the CG, the
aircraft becomes less stable but more
maneuverable
3.
When an aircraft is very slow, the AC may move
forward of the CG creating a very unstable pitch up
situation that can not be stopped by full nose down
stabilator
Page 4-10
(9-99) Original


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