Pugilistic Animus
have a look at this...
Just a brief glance at the page it looks almost like higher reynolds numbers would lead to the airflow at the stagnation points taking longer as you go rearwards to "de-stagnify" and go back up to normal speeds. A lot of turbulence I'm sure would ensue as well.
thermal transfer problems..
You mean hot spots on the plane?
stability problems
How would that occur? High pressure zones occurring in key areas due to the airflow stagnating and not accelerating back up?
structural efficiency
Well, that makes more sense as delta wings are very strong structures
volumetric space for fuel and auxiliaries...etc...
Makes sense as many hypersonic concepts use low density fuels.
Still, I thought the whole purpose of a wave-rider is to produce an aircraft that can get high L/D ratios while at high mach (where it is harder to do so)