Which climb profile is necessary to clear a high obstacle at the end of a runway?

The best climb profile to clear a high obstacle at the end of a runway is the maximum angle of climb. This profile is specifically designed to maximize the altitude gained per horizontal distance traveled, which is crucial when facing an obstacle right after takeoff.

When an aircraft follows a maximum angle of climb trajectory, it achieves the highest altitude over the shortest distance, thereby ensuring that it can clear any obstructions in its flight path. This is especially important during the initial climb phase, where the aircraft is near the ground and has limited altitude to maneuver.

In contrast, other profiles such as the best rate of climb focus on achieving the highest altitude in the shortest amount of time, which may not correspond to the steepest climb angle necessary for obstacle clearance. Standard climb rates and normal climbs typically provide adequate performance for general flying conditions but may not be optimized for the specific requirement of avoiding a high obstacle immediately after takeoff.