Patents by Inventor Alejandro Silva

Alejandro Silva has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Integrated electric propulsion unit
    Patent number: 11794913
    Abstract: 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.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: October 24, 2023
    Assignee: The Boeing Company
    Inventors: Frederic Lacaux, Kamiar J. Karimi, Eugene V. Solodovnik, Aaron J. Kutzmann, Patrick R. Darmstadt, Mary E. Beckman, Alejandro Silva, Nicholas J. Silveri, Esther S. Zidovetzki
  • Integrated Electric Propulsion Unit
    Publication number: 20220119121
    Abstract: 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 a plurality of bearings supported inside the housing, a hollow motor shaft rotatably coupled to the housing by the plurality of 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 inverter is disposed within the housing and connected to receive DC power for conversion into AC power.
    Type: Application
    Filed: July 16, 2021
    Publication date: April 21, 2022
    Applicant: The Boeing Company
    Inventors: Frederic Lacaux, Kamiar J. Karimi, Eugene V. Solodovnik, Aaron J. Kutzmann, Patrick R. Darmstadt, Mary E. Beckman, Alejandro Silva, Nicholas J. Silveri, Esther S. Zidovetzki
  • Nacelle inlet lip skin with pad-up defining a developable surface having parallel ruling lines
    Patent number: 9663238
    Abstract: 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.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: May 30, 2017
    Assignee: The Boeing Company
    Inventors: Daniel J. Kane, Stuart W. Vogel, Hoa V. Truong, Michael W. Kass, Andrew T. Gilmore, Paul D. Whitmore, Jack W. Mauldin, Alejandro Silva, John Ybarra
  • NACELLE INLET CONFIGURATION
    Publication number: 20150129045
    Abstract: 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.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 14, 2015
    Applicant: The Boeing Company
    Inventors: Daniel J. Kane, Stuart W. Vogel, Hoa V. Truong, Michael W. Kass, Andrew T. Gilmore, Paul D. Whitmore, Jack W. Mauldin, Alejandro Silva, John Ybarra