What is the main goal of fairings on nonretractable landing gear?

The main goal of fairings on nonretractable landing gear is to reduce drag. Fairings are streamlined structures that cover and smooth out the parts of the landing gear, which can create significant aerodynamic resistance when the aircraft is in flight. By reducing the drag caused by these components, fairings enhance the overall aerodynamic efficiency of the aircraft, improving fuel efficiency and performance.

When nonretractable landing gear is deployed, it can disrupt the airflow around the aircraft, leading to increased drag. Fairings help to minimize this disruption by providing a more aerodynamic shape. This is crucial for maintaining optimal flight characteristics and achieving better performance during various phases of flight. In contrast to the other choices, the primary purpose of fairings is centered on aerodynamic efficiency, rather than the other options related to weight, cabin space enhancement, or engine performance.