| 摘要 |
A method of assembling a propeller blade retention assembly comprises the steps of locating a tapered roller bearing set 26 between a floating race 24 and a propeller blade root located within a hub barrel 16, biasing an end cap 28 towards the floating race, and rotating the end cap and the floating race until the tapered roller bearing set is seated and the end cap is in facial engagement with the floating race such that the propeller blade root 18 is preloaded relative to the hub barrel. The biasing process may include using a spring and pin combination to bias the end cap towards the race. Next, a threaded fastener may be used to maintain the end cap in facial engagement with the floating race. Preferably the preloading method includes processing the tapered roller bearing set inward in a helical path. (The method is best shown in figures 5-6.) It aims to increases the moment capacity of the retention for a given pitch diameter. |
