Discussion
Match each centre of gravity consideration in List I with its governing factor in List II.
List I
A. Forward limit
B. Aft limit
C. In-flight movement
D. Reference for quoting position
List II
1. Stability and control sensitivity
2. Elevator authority to rotate and flare
3. Mean aerodynamic chord
4. Fuel burn sequence and passenger distribution
Select the correct match.
Answer: A
Correct answer: A-2, B-1, C-4, D-3
The two limits are set by different things, which is the point of the question. The forward limit is a control limit: enough elevator power to rotate and flare. The aft limit is a stability limit: the static margin must not fall so far that the aircraft becomes over-sensitive. In-flight movement comes from fuel burn sequence and passenger distribution, and everything is quoted against the mean aerodynamic chord.
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