We have saying “Selo veselo” … it could be “Happy village” although it sounds much better in original
What v f(t) saying… 700=Isp * ln (m0/m1) -> 700=Isp * ln (350/230) -> Isp=1665 … garbage fuel
However, no it isn’t garbage fuel but vertical launch. That is why velocity reduction is such a massive, rocket would be under extremely high kinematic overload to get directed toward target.
First what should be forgotten immediately is to have warm start of such rocket from the container. It would knock down that container together with the truck in black mother ground underneath. Furthermore, this rocket is with only aerodynamic controlling surfaces and for that initial velocity is expected and needed. No, they will not implement gas dynamics surfaces, if this system ever “see light of living” in what I doubt.
The principal is to have strong cold start, either by gas generator, either by some kind of “mortar catapult” and that flight time should be incorporated in velocity envelope presented in this graph. And I think it is
