What control input is required to recover from dynamic rollover on level ground?

What control input is required to recover from dynamic rollover on level ground?

• A. Perform a smooth moderate collective reduction
• B. Push opposite cyclic aggressively
• C. Increase throttle to restore rotor RPM
• D. Apply full pedal input

Answer: (A)

Dynamic rollover recovery on level ground centers on breaking the rolling motion by reducing the lift that’s contributing to the tipping moment, then letting gravity help relevel the rotor disk. A smooth, moderate reduction in collective lowers rotor thrust evenly and quickly reduces the weight support on the banked side without introducing abrupt changes. This dampens the roll rate and allows the helicopter to come back toward a level attitude without overshooting or loading the rotor system further. Abruptly pushing cyclic aggressively would aggravate the rolling motion and can drive the aircraft into a deeper rollover. Forcing more power by increasing throttle doesn’t address the bank and can increase rotor energy in a way that makes recovery harder. Full pedal input affects yaw, not the bank or roll rate, so it doesn’t correct dynamic rollover.

Dynamic rollover recovery on level ground centers on breaking the rolling motion by reducing the lift that’s contributing to the tipping moment, then letting gravity help relevel the rotor disk. A smooth, moderate reduction in collective lowers rotor thrust evenly and quickly reduces the weight support on the banked side without introducing abrupt changes. This dampens the roll rate and allows the helicopter to come back toward a level attitude without overshooting or loading the rotor system further.

Abruptly pushing cyclic aggressively would aggravate the rolling motion and can drive the aircraft into a deeper rollover. Forcing more power by increasing throttle doesn’t address the bank and can increase rotor energy in a way that makes recovery harder. Full pedal input affects yaw, not the bank or roll rate, so it doesn’t correct dynamic rollover.