1. “Dunarea de Jos” University, Faculty of Engineering, Department of Mechanical Engineering, 111 Domneasca, Galati, Romania
2. “Dunarea de Jos” University, Faculty of Engineering, Department of Mechanical Engineering, 111 Domneasca, Galati, Romania, lorena.deleanu@ugal.ro
3. INCAS – National Institute for Aerospace Research “Elie Carafoli”, 220 Avenue Iuliu Maniu, Bucharest 061126, Romania, pirvu.catalin@incas.ro