Question

In a direct drive turboprop, what prevents the prop from feathering? (Especially during start up)

Answer 1

In a direct drive turboprop, the prop is connected directly to the engine shaft and does not have a separate propeller feathering mechanism. During startup, the engine provides the necessary power to keep the propeller spinning.

Step-by-step explanation:

In a direct drive turboprop, the prop is connected directly to the engine shaft and does not have a separate propeller feathering mechanism. Feathering refers to changing the pitch of the propeller blades to reduce drag in case of engine failure or shutdown. Since a direct drive turboprop does not have a separate feathering mechanism, the propeller cannot be feathered. During startup, the engine is started and the propeller spins due to the direct connection between the engine shaft and the propeller blades. Once the engine starts running, it provides the necessary power to keep the propeller spinning.