GAS TURBINE ENGINES INCLUDING THERMAL MANAGEMENT SYSTEMS WITH RECIRCULATING FUEL CIRCUITS AND RELATED METHODS

Gas turbine engines (106) including thermal management systems (200, 300, 400, 500, 600, 700, 764, 800, 808, 900, 1000) with recirculating fuel circuits and related methods are disclosed herein. An example gas turbine engine disclosed herein includes a fuel flow line (202, 708), a fuel inlet (209, 712), a nozzle (212, 714) fluidly coupled to the fuel inlet (209, 712) by the fuel flow line (202, 708), and a recirculation flow circuit (204, 710) coupled to the fuel flow line (202, 708) between the fuel inlet (209, 712) and the nozzle (212, 714), the recirculation flow circuit (204, 710) including a cooler and a heat-producing component (216, 731A) coupled to the fuel flow line (202, 708) downstream of the fuel inlet (209, 712) along the fuel flow line (202, 708).