What function does the strut bearing serve in relation to the shaft?

The strut bearing serves as a crucial component in the propulsion system's shaft arrangement, specifically acting as the final support device before the propeller. This function is essential because the strut bearing provides support to the shaft and helps to maintain its alignment as well as absorb any forces transmitted from the propeller during operation. By providing this support, the strut bearing ensures the shaft can rotate efficiently, minimizing wear and potential damage to both the shaft and the surrounding structures.

In this context, it is important to differentiate the roles of various components in the propulsion system. The strut bearing is positioned strategically to offer support just ahead of the propeller, making it critical for the overall performance and stability of the system. This alignment and support help in reducing vibrations and operating stresses that might otherwise impact the shaft or propeller performance adversely.