How does the center of gravity (C.G.) range of helicopters compare to that of fixed-wing airplanes?

In the context of helicopters compared to fixed-wing airplanes, the correct understanding is that helicopters typically have a smaller center of gravity (C.G.) range. This is largely due to the unique design and operational requirements of helicopters.

Helicopters rely heavily on their rotor system for lift and stability, which is sensitive to changes in weight distribution. As a result, they must maintain a carefully managed C.G. within a tighter range to ensure optimal performance and control. If the C.G. shifts outside this narrow range, it could lead to undesirable handling characteristics, such as difficulty in controlling the aircraft or issues with hover stability.

On the other hand, fixed-wing airplanes generally have a wider C.G. range because their aerodynamic stability allows for more flexibility in weight distribution without dramatically affecting flight performance. The flight characteristics of airplanes can accommodate a more varied C.G. position within a broader envelope.

Therefore, understanding that helicopters need to operate within a smaller C.G. range is crucial for maintaining their unique flight capabilities and safety measures, which explains why this answer is the most appropriate choice for the question posed.