Operation of the Nr HI system greatly ______ tail rotor authority.

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Prepare for the Mission Helicopter-65E Test with flashcards and multiple choice questions. Each question has hints and explanations. Get ready for your exam!

Multiple Choice

Operation of the Nr HI system greatly ______ tail rotor authority.

Explanation:
Raising Nr to the high-speed setting increases the available main rotor torque and engine power margin, which directly boosts the tail rotor’s anti-torque capability. In other words, with Nr HI the system allows more power to be allocated to countering main rotor torque, so pedal input produces a larger yaw response. This makes tail rotor authority greater than at normal Nr, improving yaw control in demanding situations.

Raising Nr to the high-speed setting increases the available main rotor torque and engine power margin, which directly boosts the tail rotor’s anti-torque capability. In other words, with Nr HI the system allows more power to be allocated to countering main rotor torque, so pedal input produces a larger yaw response. This makes tail rotor authority greater than at normal Nr, improving yaw control in demanding situations.

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