US Patent Issued to RTX on April 22 for "Cluster of swirled mini-mixers for fuel-staged, axially staged combustion" (Alabama, Connecticut Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,795, issued on April 22, was assigned to RTX Corp. (Farmington, Conn.).

"Cluster of swirled mini-mixers for fuel-staged, axially staged combustion" was invented by Gregory Boardman (Owens Cross Roads, Ala.) and Stephen Kramer (Cromwell, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A main injector can include multiple sub-element mixers. A first sub-element mixer includes a first main air nozzle circumscribing a first main fuel nozzle. A second sub-element mixer includes a second main air nozzle circumscribing a second main fuel nozzle. An annular combustor can include a circumferential array of main injectors disposed proximate a pilot inject...