Ram air turbine over-speed protection using redundant yoke plate linear bearings
AssigneeHamilton Sundstrand Corporation
InventorsWilliam DeGroff, Harry Carter
Life of this patent
Estimating the term…
Abstract
An improved ram air turbine for generating emergency aeronautical supplemental power with a plurality of concentric or nested linear bearings for supporting a speed governor yoke plate on a speed governor shaft comprising a movable sleeve that supports the yoke plate and rides on the governor shaft.
Claims15
An improved ram air turbine (RAT) for generating emergency aeronautical supplemental power that has a mechanical governor for automatically adjusting the pitch of turbine blades attached to a turbine hub for the RAT, comprising:
- a governor shaft within the RAT that has an axis of rotation;
- a yoke plate for adjusting the pitch of the turbine blades as it travels axially with respect to the axis of rotation;
- and
- a plurality of concentric linear bearings that slidingly support the yoke plate on the governor shaft.
An improved ram air turbine (RAT) for generating emergency aeronautical supplemental power that has a mechanical governor for automatically adjusting the pitch of turbine blades attached to a turbine hub for the RAT, comprising:
- a governor shaft within the RAT that has an axis of rotation;
- a yoke plate for adjusting the pitch of the turbine blades as it travels axially with respect to the axis of rotation;
- and
- a pair of concentric linear bearings comprising a movable sleeve fitted between the governor shaft and the yoke plate that slidingly support the yoke plate on the governor shaft.
An improved ram air turbine (RAT) for generating emergency aeronautical supplemental power that has a mechanical governor for automatically adjusting the pitch of turbine blades attached to a turbine hub for the RAT, comprising:
- a governor shaft within the RAT that has an axis of rotation;
- a yoke plate for adjusting the pitch of the turbine blades as it travels axially with respect to the axis of rotation;
- and
- a pair of concentric linear bearings comprising a sleeve bearing that comprises the generator shaft slidingly supporting a movable sleeve with sleeve bushings and a yoke plate bearing that comprises the movable sleeve slidingly supporting the yoke plate with yoke plate bushings.
Dependencies are inferred from the claim text.