How does the hydraulic stability of the Xbloc® compare to other units?

From the first 2D tests at Delft Hydraulics it was found that the hydraulic stability is at least comparable with the hydraulic stability of other single layer armor units. The Hudson equation Kd = 16 or the Van der Meer's equation stability number = 2.8 can be used for preliminary design, based on a slope angle of 3:4. In further 2D model testing even better stability results were obtained, as a result of an improved unit placement method.

This results in additional safety of the design. More.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.