HIRENASD FEM wing only HEX20
The finite element model being used by the AePW is based on the model provided at 
[**HIRENASD website**](https://heinrich.lufmech.rwth-aachen.de/index.php?lang=en&pg=home)

The NASTRAN FEM's using HEXA solid elements and identified as "structured"(str) is the one that will be used.  Another exists which uses TETRA …