Question

1. a small unmanned aircraft loaded with the most rearward center of gravity is

○a. less stable at all speeds.
○b. more stable at slow speeds.
○c. more stable at fast speeds.

Explanation:

When the center of gravity is at the most rearward position, the aircraft's longitudinal stability is affected. Longitudinal stability is related to the aircraft's pitching motion. A rearward - center - of - gravity position reduces the aircraft's static longitudinal stability. Static longitudinal stability is related to the aircraft's tendency to return to its original attitude after a disturbance. At higher speeds, the aerodynamic forces (such as the down - wash on the horizontal stabilizer) play a more significant role. The rearward center of gravity makes the aircraft more stable at high speeds because the aerodynamic forces can more effectively counteract pitching moments compared to low - speed flight where the aerodynamic forces are weaker.

Answer:

C. more stable at fast speeds.