The Boeing Company

Alejandro Silva

Kamiar J Karimi

Aaron Jonathan Kutzmann

Eugene V Solodovnik

Frederic Lacaux

Jack William Mauldin

Daniel James Kane

Mary Eileen Beckman

Esther S Zidovetzki

Stuart William Vogel

Patrick R Darmstadt

Richard L Stark

John Ybarra

Paul D Whitmore

Andrew T Gilmore

Michael W Kass

Hoa V Truong

Nicholas J Silveri

An electric propulsion unit comprising a housing, an AC motor, a beta rod, a propeller, a governor, an inverter, and a controller. The AC motor is disposed within the housing and includes bearings supported inside the housing, a hollow motor shaft rotatably coupled to the housing by the bearings, a stator which is supported by the housing, and a rotor which is mounted to the hollow motor shaft. The beta rod is axially translatable inside the hollow motor shaft. The propeller is mechanically coupled to the hollow motor shaft. The propeller includes propeller blades having an adjustable pitch angle which depends on an axial position of the beta rod. The governor is configured to adjust a pitch angle of the propeller blades by actuating axial translation of the beta rod. The controller is disposed inside the housing and configured to control the pitch angle of the propeller blades.

Integrated electric propulsion unit

A nacelle inlet is provided for a turbo-fan engine for an aircraft. The nacelle inlet includes a lip skin having first and second pad-ups, an inner barrel including a forward flange and a bulkhead. The bulkhead, the lip skin and the inner barrel are attached together at mating surfaces. The bulkhead and the lip skin are attached together at mating surfaces. Each mating surface defines a surface geometry which approximates a developable surface having parallel ruling lines. The developable surfaces are formed by machining.

Nacelle inlet lip skin with pad-up defining a developable surface having parallel ruling lines

Growing community of inventors

Rancho Santa Margarita, CA, United States of America

Alejandro Silva