In the 70's a west german company (also called OTRAG) created a design for a rocket that was basically a bunch of small, mass produced and cheep, that could be increased to the size needed for any launch by gust adding more of these Rockets. Now the company failed but it seems like it failed more because its launch site was in the notoriously (un)stable country of zaire, and that more or less killed the project. One thing I intresed in is could this idea (of mass produced rocket engines that are inarintly disposable) have worked, preferably in a better country like idountknow Brazil maby?