Vx is defined as which climb speed?

Vx is defined as which climb speed?

• A. Best Angle of Climb Speed
• B. Best Rate of Climb Speed
• C. Best Glide Speed
• D. Reference Speed

Answer: (A)

Vx stands for Best Angle of Climb Speed—the airspeed that produces the steepest climb angle, meaning the greatest altitude gain for a given horizontal distance traveled. This speed is used when obstacle clearance is the priority, because you gain the most height while covering the least ground. Fly faster than Vx and the climb angle becomes shallower, meaning you climb more slowly relative to forward travel; fly slower than Vx and you risk insufficient airspeed to maintain a climb or even stall before you gain much altitude. For comparison, Best Rate of Climb Speed (Vy) maximizes altitude gained per unit time, not distance, while Best Glide Speed relates to gliding efficiency, and Reference Speed is a general cruise/operating speed.

Vx stands for Best Angle of Climb Speed—the airspeed that produces the steepest climb angle, meaning the greatest altitude gain for a given horizontal distance traveled. This speed is used when obstacle clearance is the priority, because you gain the most height while covering the least ground. Fly faster than Vx and the climb angle becomes shallower, meaning you climb more slowly relative to forward travel; fly slower than Vx and you risk insufficient airspeed to maintain a climb or even stall before you gain much altitude. For comparison, Best Rate of Climb Speed (Vy) maximizes altitude gained per unit time, not distance, while Best Glide Speed relates to gliding efficiency, and Reference Speed is a general cruise/operating speed.