Pratt-whitney Canada Corp

Tyler Richardson

Tibor Urac

Thomas Veitch

Nathan Tomes

Dave Menheere

An aircraft powerplant apparatus includes a rotating structure configured to rotate about an axis. The rotating structure includes a bladed rotor, a first component, a second component, a first balancing mass, a second balancing mass and a spring element. The first balancing mass and the second balancing mass are configured to rotationally balance the rotating structure about the axis. The first component include a plurality of first component teeth. The second component includes a plurality of second component teeth. The first balancing mass includes a first mass ring and a plurality of first mass teeth. The first mass teeth are meshed with the first component teeth. The second balancing mass includes a second mass ring and a plurality of second mass teeth. The second mass teeth are meshed with the second component teeth. The spring element is engaged with the first balancing mass and the second balancing mass.

In situ balancing mass(es) for aircraft powerplant

A gas turbine engine casing apparatus includes annular first and second annular cases connected by a spigot joint. The spigot joint includes an annular projection of the first annular case fitted into an annular recess of the second annular case. A plurality of circumferentially spaced apart scallops are formed on one of surfaces of the annular projection or of the annular recess, and are located in selective circumferential locations adjacent respective enhanced stiff areas of the first and second annular cases.

Growing community of inventors

Etobicoke, Canada

Tyler Richardson