TY JOUR TI LIFTING A METEOROLOGICAL MISSILE TO A SET HEIGHT IN A FIXED TIME WITH MINIMAL CONTROL ENERGY USAGE KW optimal control KW variational calculus KW rocket control JO Bulletin of the Angarsk State Technical University AU Istomin, A.L. AU Krivov, M.. AU Istomina, A.A. PY 2025 IS 1 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»