Abstract: A heat exchanger includes a plate portion including a top surface, bottom surface, a leading edge, a trailing edge and a plurality of internal passages extending between an inlet and an outlet. A fin portion extends outward from one of the top surface and the bottom surface. The fin portion and the leading edge of the plate portion define a leading edge contour. A cast plate for a heat exchanger and a method are also disclosed.

Abstract: A plate fin heat exchanger includes a first cast plate assembly includes at least two plate portions separated by at least one cooling channel. Each of the two plate portions include a plurality of internal passages extending between a corresponding plurality of inlets and outlets. A common inlet perimeter surrounds the plurality of inlets from each of the two plate portions and an outlet perimeter surrounds the plurality of outlets from each of the two plate portions. An inlet manifold is attached at an inlet joint to the inlet perimeter. An outlet manifold is attached at an outlet joint to the outlet perimeter. A method is also disclosed.

Abstract: A heat exchanger includes a plate portion including a top surface, bottom surface, a leading edge, a trailing edge and a plurality of internal passages extending between an inlet and an outlet. A plurality of fin portion rows are included. A first row of the plurality of fin portions includes at least two discrete fin portions and a second row of the plurality of in portions includes fewer fin portions than the first row. The first row is closer to the inlet than the second row. A cast plate for a heat exchanger and a method are also disclosed.

Abstract: A welded assembly includes a first sheet and a second sheet. The second sheet is disposed over a portion of the first sheet and defines an overlap portion between the first and second sheets. A weld fastening the second sheet to the first sheet in the overlap area connects the second sheet to the first sheet for distributing stress uniformly across a welded portion of the overlap area.

Abstract: A welded assembly includes a first sheet and a second sheet. The second sheet is disposed over a portion of the first sheet and defines an overlap portion between the first and second sheets. A weld fastening the second sheet to the first sheet in the overlap area connects the second sheet to the first sheet for distributing stress uniformly across a welded portion of the overlap area.

Abstract: A welded assembly includes a first sheet and a second sheet. The second sheet is disposed over a portion of the first sheet and defines an overlap portion between the first and second sheets. A weld fastening the second sheet to the first sheet in the overlap area connects the second sheet to the first sheet for distributing stress uniformly across a welded portion of the overlap area.