The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 2023
Filed:
Apr. 26, 2019
Applicant:
Rolls-royce Plc, London, GB;
Inventor:
Giles E Harvey, Derby, GB;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 25/06 (2006.01); B64D 27/24 (2006.01); B64D 35/02 (2006.01);
U.S. Cl.
CPC ...
F04D 25/06 (2013.01); B64D 27/24 (2013.01); B64D 35/02 (2013.01);
Abstract
The present disclosure concerns an electric aircraft propulsion system. Example embodiments include an aircraft propulsion system () comprising: a fan () mounted on a central shaft (); a first electric motor () mounted on the central shaft () and arranged to drive rotation of the fan () via the central shaft; and a second electric motor () arranged to drive rotation of the fan () via the central shaft (), wherein the second electric motor () is coaxially mounted downstream of the first electric motor () and an outer diameter (D) of the second electric motor () is smaller than an outer diameter (D) of the first electric motor ().