Considered the mechanical condition of the press powder filler composite elements of the system radioautomatics objects of space engineering. The study of mechanical properties of pyrotechnic compositions under uniaxial and multiaxial loading short. The dependences of the volume weight and mechanical characteristics of pyrotechnic compositions by compacting pressure. On the basis of modeling the process equipment pyroelement by pressing in rigid matrix A phenomenological model of cracking in pyrotechnic compositions, enables the assessment of the mechanical state under multiaxial loading with a view to recommending technological nature.