Figure shows an exploded view of an airplane engine, reduction gear, and pro- peller. The engine and propeller rotate clockwise, viewed from the propeller end. The reduction gear housing is bolted to the engine housing through the bolt holes shown. Neglect friction losses in the reduction gear. When the engine develops 150 hp at 3600 rpm,
(a) What is the direction and magnitude of the torque applied to the engine housing by the reduction gear housing?
(b) What is the magnitude and direction of the torque reaction tending to rotate (roll) the aircraft?
(c) What is an advantage of using opposite-rotating engines with twin-engine propeller-driven aircraft?
