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Figure 4: Entropy diagram (T, s) of a real open Brayton cycle (OBC): cycle irreversibilities are shown.

The Mercuri is a radical aircraft concept that uses a distributed layout to power 40 micro propellers embedded in its wings. It is capable of vertical take-off (VTOL) and could cover ten times the range of similar aircraft with its recuperated Brayton cycle ceramic turbine and ground effect capabilities.