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:
Jun. 17, 2025
Filed:
Aug. 02, 2024
Rtx Corporation, Farmington, CT (US);
Brandon M. Evans, San Antonio, TX (US);
Neil J. Terwilliger, Cheshire, CT (US);
RTX CORPORATION, Farmington, CT (US);
Abstract
An aircraft propulsion system includes a core engine that includes a main compressor where an inlet airflow is compressed and communicated to a combustor to generate an exhaust gas flow that is expanded through a main turbine section to generate power used to drive the main compressor and a propulsive fan, a bottoming cycle where a working fluid mixture within a closed circuit is heated and expanded through a bottom turbine to generate shaft power, the working fluid mixture includes at least two fluids that have different properties that change a capability of the working fluid mixture at different bottoming cycle operating points, a first heat exchanger where heat is input into the working fluid mixture, and a second heat exchanger where the working fluid mixture is cooled.