What happens during the takeoff and climb phase?

During the takeoff and climb phase, the primary objective is to accelerate the aircraft down the runway until it reaches the necessary speed for lift-off. The pilot increases engine power to generate the required thrust that enables the aircraft to overcome gravitational forces and take off successfully. This phase is crucial for achieving the correct airspeed, which allows the wings to generate enough lift to elevate the aircraft off the ground.

In this phase, other actions, such as retracting flaps and slats, occur but are subsequent to the initial acceleration and lift-off achieved through increased engine power. Additionally, while it is vital for the aircraft to achieve a steady climb after takeoff, immediately descending contradicts the purpose of taking off and climbing, which is to ascend away from the ground.