What does V2 stand for in aviation terms?

• A. Takeoff safety speed—the airspeed after liftoff at which the required one-engine-inoperative climb performance can be achieved
• B. Best rate of climb speed at sea level
• C. Maximum structural cruising speed
• D. Stall speed at takeoff

Answer: (A)

V2 is the takeoff safety speed. It represents the minimum airspeed at or just after liftoff at which the airplane can safely continue the takeoff with one engine inoperative and still meet the required climb performance to clear obstacles. This speed gives the necessary protection margin above stall and ensures there is enough control authority, especially with one engine failed, to maintain a stable, climb-out path. It’s specifically tied to engine-out performance after liftoff, not to normal single-engine climb rate or to the airplane’s maximum cruising or stall speeds. The other options describe different speeds: the best rate of climb speed (VY) relates to normal, fastest climb, maximum structural cruising speed (VMO/Vne) marks the upper speed limit for structural reasons, and stall speed at takeoff (Vs) is the minimum speed to avoid a stall in takeoff configuration.