To increase the rate of turn while decreasing the radius, a pilot should?

To increase the rate of turn while decreasing the radius of a turn, a pilot should increase the bank angle and decrease airspeed.

When a pilot increases the bank angle, the aircraft experiences greater load factor, which increases the centrifugal force acting on the aircraft. This force effectively helps the aircraft to turn more sharply. As the bank increases, the turn radius decreases, allowing for a tighter turn.

Additionally, reducing the airspeed helps to prevent exceeding the aircraft’s critical load factor limits. In high-speed turns, an aircraft becomes more susceptible to stall due to higher G-forces acting on it, making careful management of airspeed essential. At lower speeds, the aircraft can maintain a stalling margin while completing a tighter turn.

Increasing the bank while simultaneously decreasing airspeed allows a pilot to finely tune the balance between turn performance and aircraft stability, providing the desired outcome of increased turn rate and reduced turn radius.