What is the Max Power Off rotor RPM?

What is the Max Power Off rotor RPM?

• A. 395
• B. 350
• C. 420
• D. 300

Answer: (A)

Rotor speed limits in power-off conditions set the upper bound for the rotor when the engine isn’t driving it, which is crucial during autorotation or engine failure to prevent rotor overspeed and potential blade damage. For the MH-65E, the maximum power-off rotor RPM is 395. That value defines the highest speed the rotor should be allowed to reach without engine power. Values below that (like 350 or 300) are permissible but not the maximum, while a higher figure (like 420) would exceed the safe limit in a power-off scenario.

Rotor speed limits in power-off conditions set the upper bound for the rotor when the engine isn’t driving it, which is crucial during autorotation or engine failure to prevent rotor overspeed and potential blade damage. For the MH-65E, the maximum power-off rotor RPM is 395. That value defines the highest speed the rotor should be allowed to reach without engine power. Values below that (like 350 or 300) are permissible but not the maximum, while a higher figure (like 420) would exceed the safe limit in a power-off scenario.