That is incorrect, different solid fuel compounds provide different levels of thrust even with the same density
Source: Solid
you literally showed what i said?. There is no improvement in solid rocket motors when it comes to performance. All improvements are in storage and handling
My man you are confused, you literally posted the exact information i said.
There haven’t been any improvements to solid rocket motors because of physics, we are stuck in this 250 seconds range
And since when modern-ish missiles are loaded with black powder?
What are you even talking about, DO YOU SEE THE CURVE YOU POSTED
Motor’s efficiency is directly related to its exhaust velocity. I have no idea what are you even trying to say here.