[Spaceships] Black powder Rockets?

[Marasmusine]

Originally Posted by Humabout

My understanding of black powder motors is that they are prone to cracking. That probably causes issues when you try to make something the size of an SRB. On top of that, aluminum perchlorate is far easier to cast and has a higher energy density than powder.

Yes I intend to give the rocket a good chance of catastrophic failure!