Abstract: Heat exchangers and methods of making heat exchangers are discussed herein. The heat exchangers are unique in that they comprise a plurality of heat exchanger cores mechanically coupled to a structural frame that may be comprised by a distribution header to form an array of heat exchanger cores. In preferred embodiments, each core has one or more mounting interfaces that includes at least one input port and output port and is coupled to the distribution header in a removeable configuration via a face seal. In preferred embodiments, the heat exchanger cores are cantilevered from the structural support or distribution header.

Abstract: Heat exchanger assemblies including turning vanes are taught herein. In preferred embodiments, the heat exchanger assembly comprises: an inlet duct; a heat exchanger coupled to the inlet duct and a plurality of turning vanes coupled to the heat exchanger and protruding into the inlet duct. The intake plane of the heat exchanger is at an angle between 0 degrees and 90 degrees to the primary flow direction of the inlet duct. The plurality of turning vanes comprise: a straight leading edge of length L that is parallel to the primary flow direction of the inlet duct; a convex lower surface that transitions a bottom of the leading edge to an upper wall of a lower channel of the heat exchanger; and a concave upper surface that transitions a distal point of the turning vane to a second channel of the heat exchanger.

Abstract: An electromagnetic coil that can withstand high temperatures and operate efficiently and methods of making the same are provided. In preferred embodiments the electromagnetic coil comprises: a bobbin made entirely of ceramic; a coiled conductor wrapped around the bobbin; a potting resin applied to the coiled conductor during winding wherein, the resin is a siloxane polymer mixed with a metal oxide or a cyanate ester; and an overwind made of glass fiber yarn.