TY JOUR TI Methodological design support for new-generation airship gas-air system KW aerostatics KW airship KW gas – air system KW calculation method KW adia-batic process KW software KW airship conceptual design JO Vestnik of Don State Technical University AU Kirilin , A.. AU Boldyreva , A.. PY 2015 IS 15 PB Don state technical University