Aircraft Heat Exchangers and Plates

A heat exchanger plate for providing heat transfer between a first flow along a first flowpath and a second flow along a second flowpath, the heat exchanger plate comprising a body having:

• a first face and a second face opposite the first face;
• a leading edge along the second flowpath and a trailing edge along the second flowpath;
• a proximal edge having at least one inlet port along the first flowpath and at least one outlet port along the first flowpath;
• and
• at least one passageway along the first flowpath,
• wherein:
• along at least 8.0% of a height between the proximal edge and the distal edge, the first face and the second face converge at a first angle of at least 0.25°.

A heat exchanger plate for providing heat transfer between a first flow along a first flowpath and a second flow along a second flowpath, the heat exchanger plate comprising a body having:

• a first face and a second face opposite the first face;
• a leading edge along the second flowpath and a trailing edge along the second flowpath;
• a proximal edge having at least one inlet port along the first flowpath and at least one outlet port along the first flowpath;
• and
• at least one passageway along the first flowpath,
• wherein:
• along a proximal portion, the first face and the second face converge at a first angle;
• and
• along a distal portion, the first face and the second face converge at a second angle less than the first angle.