What components move the propeller to feather during a loss of oil pressure?

The correct answer is based on the mechanics of how the T-6B propeller system operates under conditions of low oil pressure. In situations where there is a loss of oil pressure, the propeller is designed to enter a feathered position to minimize drag and improve aerodynamic efficiency.

In this context, the counterweights play a pivotal role. They are attached to the propeller blades and utilize centrifugal force to assist in the feathering process. When oil pressure drops, the ability to maintain the normal angle of blade pitch is lost, and the weight of the counterweights helps to rotate the blades into the feathered position more effectively.

Additionally, the feathering spring provides the necessary force to help move the propeller blades to the feathered position. When the propeller is in its normal operating condition, the oil pressure keeps the blades at a low pitch angle. Upon oil pressure loss, the spring facilitates the transition to feathered by working in tandem with the counterweights, which contribute to the blade's rotation out of the wind and into the streamlined position.

This mechanism is critical for safety, ensuring that the propeller does not create unnecessary drag in the event of an engine failure, thereby optimizing glide performance. The correct response encompasses both essential components—the counter