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:
Jul. 12, 2022
Filed:
Jun. 11, 2019
Rolls-royce Plc, London, GB;
Richard Peace, Derby, GB;
Adam Newman, Derby, GB;
ROLLS-ROYCE PLC, London, GB;
Abstract
An electric propulsion unit () for an aircraft is shown. A fan () produces a pressured airflow (P) by raising the pressure of an incident airflow (I). An electric machine () is arranged to drive the fan and is located within a casing (). A primary cooling circuit () is located within the casing, and includes the electric machine and a first pass of a fluid-fluid heat exchanger (), thereby placing the electric machine and the fluid-fluid heat exchanger in thermal communication. A secondary cooling circuit includes a second pass of the fluid-fluid heat exchanger and an air-fluid heat exchanger () located within the pressurised airflow produced by the fan, thereby placing the fluid-fluid heat exchanger and the air-fluid heat exchanger in thermal communication.