Abstract: Based on the advanced adapter-based container launching technology, the geometrical features of the assembly of aerocraft & container are studied. Taking advantage of the planar assembly model, the tolerances to fit clearances are analyzed, which have effects on size, shape, location of areocraft and etc. Furthermore, the parameter design of three-dimensional model is tried. Meanwhile,the effects that interferences have on fit clearances and steering ability is analyzed by emulator. The results indicates that it can provide essential theory references for design, assembly and coordination.