'The tail rotor counters torque on this type of aircraft developed in the 1930s'
Helicopter
TRANSPORTATION: The tail rotor counters torque on this type of aircraft developed in the 1930s
The tail rotor counters torque on this type of aircraft developed in the 1930s
The tail rotor counters torque on this type of aircraft developed in the 1930s
TRANSPORTATION
Helicopter
TRANSPORTATION