What is the consequence of having too steep a rotor pitch in a helicopter?

Having too steep a rotor pitch in a helicopter leads to the condition known as "stall," which significantly affects the helicopter's ability to generate lift. When the rotor blades are angled too steeply, they disrupt the airflow over their surfaces, causing the air to separate from the blades. This separation leads to a dramatic loss of lift, making it difficult for the helicopter to maintain altitude or effectively maneuver. Therefore, the helicopter will experience a stall with insufficient lift, potentially compromising its stability and control.

In contrast, increased rotor pitch usually does not enhance speed or maneuverability; instead, it primarily decreases lift and increases drag due to the aggressive angle of attack. Therefore, it does not result in the benefits associated with ascending or maintaining control, but rather leads to potentially dangerous flying conditions.