What is the purpose of the V-Speeds (Vx, Vy, etc.)?

The purpose of V-Speeds, such as Vx and Vy, is to provide specific airspeeds that optimize aircraft performance during various phases of flight. For instance, Vx represents the speed for the best angle of climb, allowing a pilot to gain the most altitude over the shortest horizontal distance. Vy denotes the speed for the best rate of climb, permitting the aircraft to gain the most altitude in the least amount of time. These speeds are critical for ensuring safety and efficiency during takeoff, climb, and landing, helping pilots make informed decisions about the performance of their aircraft under different conditions.

Understanding these airspeeds is essential for effective flight operations and contributes to overall aircraft control and safety. The other options do not pertain to V-Speeds, as they either focus on unrelated technical aspects or operational parameters that do not achieve the specific function of optimizing climb performance or flight safety through defined airspeeds.