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FEA?

Figure 12

( RCS = radar cross section )

FEA wasn't mentioned in the acronyms or keywords list.

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"Finite Element Analysis"

Simulations that work over 3D surfaces by breaking everything up into a little triangular section, analyzing each one individually, and piecing everything together

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  • \$\begingroup\$ Not all grids have to be triangular.. but spot on. \$\endgroup\$
    – Solar Mike
    Commented Nov 2, 2019 at 7:33

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