During which segment of climb do you accelerate to V2?

The correct answer is the second segment of climb. During this phase, the aircraft typically accelerates to V2, which is the takeoff safety speed. This speed is critical as it ensures that the aircraft can safely continue climbing in the event of an engine failure after takeoff.

In the second segment, the aircraft is gaining altitude following the initial climb and is ideally configured to achieve the necessary speed for safe operation. The first segment focuses on achieving a positive rate of climb, while the third and fourth segments involve different aspects of climb performance as the aircraft reaches higher altitudes and adjusts for various flight parameters.

Acceleration to V2 specifically occurs during the second segment when considerations for climb gradient, altitude gain, and airspeed management become paramount for a successful flight ascent. Understanding this segment helps pilots ensure safety and performance standards during critical phases of flight.