What is the minimum climb angle for a successful zoom to eject?

The minimum climb angle for a successful zoom to eject is 20°. This angle is considered optimal for a pilot to achieve enough altitude and distance during a zoom maneuver, ensuring that they have a safe margin for ejection. A climb angle of 20° strikes a balance between gaining altitude rapidly and maintaining control of the aircraft, allowing for a safe ejection if necessary.

Higher angles may provide more altitude but could lead to reduced airspeed or control issues, while lower angles might not provide sufficient altitude for a safe ejection. Thus, 20° is a practical choice that pilots are trained to recognize as sufficient for a successful ejection during emergency situations.