My guess is that the machine is the fore front is a compression machine. The specimen under loading could very well be a section of a new SLV (certainly the lower or lowest section) under loading to see if it could bear the full load of the weight of the SLV.
What i means is that they are at least research is being done for a larger missile or an SLV which is not so unusual for a case like Iran. Iran is planning to send a man to orbit in about ten years and such tests are in schedule for that event.
There are probably a lot more developments going on for the maned launch SLV that we are not aware yet.