dr. Binienda and his lies part III

Zhang et al. (2013)/Math. Comput. For. Nat.-Res. Sci.Vol. 5, Issue 1, pp. 71{85/http://mcfns.com 77

"The structural volume is the volume enclosed by the
outer periphery, not including the material volume. This
value can be obtained from LS-DYNA model geometry.
Taking an estimated mass Mwing=2 1 5 0 0 kg and vol-
ume Vwing=23.65 m3, the solidity ratio of the wing is
wing =930 kg/m3."

according to the above the structure of the wing (excluding the outer skin) weighs 21.5 tonnes !

well, one of the pis propaganda cues is the "armored birch". In fact Mr. Binienda is trying to sell an armored wing, while making the birch to be feather light!