What torque corresponds to NR power-on takeoff/max?

What torque corresponds to NR power-on takeoff/max?

• A. 95%
• B. 90-110%
• C. 101-103%
• D. 103% max

Answer: (D)

NR is the rotor speed, expressed as a percentage of its allowable limit. For power-on takeoff or maximum performance, you push the engine to its highest permissible torque to achieve the most rotor power without overspeeding. In this system, the maximum torque setting used for that mode is 103% max, giving the peak available power to drive the rotor during takeoff. The other options don’t represent the upper limit: 95% is below the max needed for takeoff, a broad range like 90–110% isn’t a specific maximum, and including lower values (like 101–103%) isn’t the absolute max torque.

NR is the rotor speed, expressed as a percentage of its allowable limit. For power-on takeoff or maximum performance, you push the engine to its highest permissible torque to achieve the most rotor power without overspeeding. In this system, the maximum torque setting used for that mode is 103% max, giving the peak available power to drive the rotor during takeoff.

The other options don’t represent the upper limit: 95% is below the max needed for takeoff, a broad range like 90–110% isn’t a specific maximum, and including lower values (like 101–103%) isn’t the absolute max torque.