>>63991161Modular? you mean pod?
>The 6×6 launcher truck features armored louvers to protect the windshield from rocket blasts, and the eight launch tubes are contained in two pods of four rockets, decreasing reload time as pods can be preloaded with missiles and swapped out faster than reloading individual tubes. There're plenty examples of round pods.
Soviets had a lot of "clustered tubes" working as a pod for their SAMs, only the army kept the retarded grad and similar systems, probably because they thought it's a feature being able to shot individual missiles with a tripod and 9v battery.