The tail rotor section of the helicopter has 4 blades. Each of mass 2.3kg and the engine box of mass 28.5 kg. The center of gravity of eac blade is 170 mm from the rotational axis. The natural...

What is the true option


Extracted text: The tail rotor section of the helicopter has 4 blades. Each of mass 2.3kg and the engine box of mass 28.5 kg. The center of gravity of eac blade is 170 mm from the rotational axis. The natural frequency of the tail section is observed as 135 rad/s. During the flight, the rotor operates at 1000 rpm. What is the amplitude of the tail section if one of the blades falls off during flight? Given: damping ratio = 0.1 Select one: O 19.25 mm O 9.25 3.65 mm 13.56 mm