What is V2 defined as?

V2 is defined as the takeoff safety speed that must be maintained until the aircraft reaches a height of 35 feet above the runway. This speed is critical during the takeoff phase because it ensures that the aircraft can safely climb away from the runway in the event of an engine failure after takeoff. Achieving and maintaining V2 provides a buffer against stall conditions while maintaining performance required for a safe climb.

This speed is a key parameter in ensuring the aircraft’s performance standards are met under abnormal conditions, particularly in terms of aircraft control and stability. The determination of V2 involves various calculations that take into account aircraft weight, environmental conditions, and runway length to ensure a safe and effective takeoff.

While climb speed for takeoff, landing safety speed, and minimum unstick speed represent other important airspeed references, they do not specifically convey the same safety assurances that V2 offers during the critical early moments of flight.