What is a critical factor affecting minimum V2 speed under high weight conditions?

Minimum V2 speed, which is the minimum safe speed for takeoff during the climb after an engine failure, is significantly influenced by the stall reference speed. The stall reference speed is essentially the speed at which the aircraft will stall in a clean configuration (without additional lift devices deployed) during climb. Under high weight conditions, as the aircraft’s weight increases, the stall reference speed also increases. This change necessitates a higher V2 speed to ensure that, should an engine fail, the aircraft can maintain a safe margin above stall speed while providing adequate climb performance.

Choosing V2 too close to the stall reference speed can lead to an increased risk of stalling during the critical phases of flight post-engine failure, particularly when the aircraft is heavy. Therefore, it is crucial to determine V2 with consideration for the stall reference speed, especially in high weight scenarios where the aircraft's handling characteristics may be affected.