Hamilton Sundstrand Corporation

Richard Schultz

David Everett Russ

Stephen Michael Bortoli

A ram air turbine includes a turbine with one or more blades, a strut removably coupled to the turbine and having a gearbox section and a drive section, a cover located at an end of the gearbox section of the strut with a test plug having a static seal, a turbine shaft and a bevel gear located in the gearbox section of the strut and a driveshaft and a pinion gear located in the drive section of the strut, wherein the pinion gear engages with the bevel gear. The turbine shaft may include a dynamic seal that provides sealing between the turbine shaft and the cover. The test plug may be a threaded plug. The cover may also utilize a dynamic seal. The turbine shaft may include a splined internal cavity for use with a ground test motor.

Ram air turbine gearbox sealing

A ram air turbine is provided that utilizes a one-piece strut. The strut includes an integral gearbox section and an integral drive section. Within the strut, a turbine shaft and a bevel gear engages a driveshaft and a pinion gear, which transfers rotation from the turbine to a generator. The strut may be machined from a single piece of metal, such as aluminum.

Ram air turbine strut with integral gearbox and drive sections

A ram air turbine is presented that includes a turbine having a blade and a turbine shaft, a strut removably coupled to the turbine, wherein the strut has a gearbox section and a drive section, a turbine shaft with a bevel gear oriented perpendicularly to the turbine shaft and positioned within the gearbox section of the strut, a driveshaft coupled to the generator and positioned within the drive section of the strut, and a pinion gear that engages with the bevel gear, wherein the pinion gear is secured to the driveshaft by a spanner nut, wherein the pinion gear utilizes a key configured to interact with the keyed joint of the driveshaft. The pinion gear is supported by a pinion bearing that may be press fit onto the pinion gear and by one of the generator bearings.

Growing community of inventors

Rockford, IL, United States of America

Richard Schultz