What type of aircraft would NOT fall under the rotary-wing category?

The correct choice identifies a glider as an aircraft that does not fall under the rotary-wing category. Rotary-wing aircraft are those that achieve lift and thrust through rotating blades, which are typically found in helicopters, multi-rotor drones, and autogiros.

A glider, on the other hand, is a fixed-wing aircraft that does not have an engine and relies on aerodynamics to soar through the air. It is designed to glide over distances by utilizing rising air currents without active propulsion from engines or rotary blades. This fundamental difference in design and operational characteristics distinguishes gliders from rotary-wing aircraft, making the identification of gliders as non-rotary-wing aircraft correct. Understanding this distinction is critical when studying the classifications of different types of aircraft and their respective operational principles.