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:
Jan. 06, 2026
Filed:
May. 23, 2024
Applicant:
Rolls-royce Plc, London, GB;
Inventors:
Assignee:
ROLLS-ROYCE plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64D 33/00 (2006.01); B64D 27/10 (2006.01); F02C 7/26 (2006.01); H02P 9/08 (2006.01); H02P 101/25 (2016.01); H02P 101/30 (2015.01); H02P 103/20 (2016.01);
U.S. Cl.
CPC ...
B64D 33/00 (2013.01); B64D 27/10 (2013.01); F02C 7/26 (2013.01); H02P 9/08 (2013.01); B64D 2221/00 (2013.01); F05D 2260/85 (2013.01); H02P 2101/25 (2015.01); H02P 2101/30 (2015.01); H02P 2103/20 (2015.01);
Abstract
An aircraft power and propulsion system includes a gas turbine engine having first and second spools, the first spool being a starting spool; first and second DC electrical networks having first and second operating voltages; a first electrical machine joined with the first spool, the first electrical machine having first and a second winding sets; a second electrical machine joined with the second spool; a first, second and third AC:DC converter; and a controllable switching arrangement configured so that a connection to an AC-side of the third AC:DC converter is switchable between a winding of the second electrical machine or the second DC electrical network via an inductor.