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:
May. 27, 2025
Filed:
Apr. 09, 2024
Pratt & Whitney Canada Corp., Longueuil, CA;
Russell Stratton, Toronto, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Abstract
An aircraft propulsion system includes a gas turbine engine, a water-exhaust heat exchanger, and a fuel cell segment. The gas turbine engine has a compressor, a combustor, and a turbine. The engine is in drive communication with a rotational load component. The water-exhaust heat exchanger is disposed to receive exhaust gas exiting the turbine section. The fuel cell segment includes a liquid hydrogen evaporator, a fuel cell, and a water pump. The liquid hydrogen evaporator is configured to change a flow of liquid hydrogen to a flow of gaseous hydrogen. The fuel cell is configured to receive a flow of air and the flow of gaseous hydrogen and react them to produce electrical power and a flow of water. The flow of water from the fuel cell goes to the water-exhaust heat exchanger which converts the flow of water to a flow of steam.