Area of Expertise: Flight Dynamics Optimal & Terminal Control Symmetry Analysis of Differential Equations Parametric Analysis of Dynamical Systems
Academic Background: D.Sc. in Eng.: 1996, Institute of Airforce, Kyiv Ph.D. in Eng.: 1987, Institute of Airforce, Kyiv M.Sc. in Math.: 1992, Kyiv State University (Supervisor Prof. W.I. Fushchych) M.Sc. in Electrical Eng.: 1981, Institute of Airforce, Kyiv
Professional Experience: 2001-till now Leading Researcher at the Institute of Mathematical Machines and Systems Problems NAS of Ukraine 2003-2007 Senior Researcher (part-time) at the Department of Applied Research Institute of Mathematics NAS of Ukraine 2000-2001 Senior Researcher at the Institute of Modeling Problems in Energetic NAS of Ukraine 1999-2000 Senior Researcher at the MNII IPM "Ritm" National Technical University of Ukraine 1983-1999 (Post-graduate Student, Senior Researcher, Chief Researcher) at the Institute of Airforce 1982-1983 Senior Engineer at the Special Airforce Metrological Laboratory 1981-1982 Instructor at the Airforce Mechanics School
Lehenkyi V. and Rudolph J., Derived Type and Symmetry Analysis of One Input Third Order Control Systems, Proc. of the 2-d Workshop dedicated to the memory of W. Fushchych, Poltava, (2012), 24-29 (in Ukrainian). [pdf].
Lehenkyi V.I., Optimal control of angular orientation of aircrafts, Proceedings of the Sixth International Aerospace Congress IAC09 (Plenary and selected papers), August, 23–27, 2009, Moscow, Russia, (2010), 251–261 [pdf].
Lehenkyi V.I., On the foliation of algebraic equations, In book: Simmetries of Differential Equations, Moscow Institute of Physics and Technology (2008), 121–131 (in Russian) [pdf].
Lehenkyi V., Yakovenko G. Dimensionless variables: group-theoretic approach. In book: Simmetries of Differential Equations, Moscow Institute of Physics and Technology (2008), 132–142 (in Russian) [pdf].
Lehenkyi V.I., On minimal parametric models in flight dymamics, Proceedings of the Fifth International Aerospace Congress IAC'06, August, 27–31, 2006, Moscow, Russia, 0320702706 (2007), 223–226 [pdf].
Lehenkyi V.I., Pi-theorem in the problem of parametric reduction of dynamical systems, - In book: Symmetry and Integrability of Equations of Mathematical Physics, – Kiev, Institute of Mathematics, (2006), 187–196 [pdf].
Lehenkyi V. and Rudolph J., Towards the Group Classification of Control Systems, Proceedings of the 5-th International conference ”Symmetry in Nonlinear Mathematical Physics”, Institute of Mathematics of the National Academy of Sciences of the Ukraine, Kiev, v. 50, i. 1, 2004, 170-175.
Lehenkyi V., On the Design of Control Systems with Invariant Representation of Desired Trajectory, Mathematical Machines and Systems, 1, 2004, 115-121 (in Russian). [pdf].
Lehenkyi V., Rudolph J., On symmetries of ”Nonholonomic Car” motion equations, Cybernetics and Computer Engineering v. 136, 2000, 74-76 (in Russian). [pdf].
Lehenkyi V., Rudolph J., Group classification of second order conrtol systems,, Proceedings of the Institute of Mathematics of the National Academy of Sciences of the Ukraine), Kiev, v. 36, 2001, 167-176 (in Russian). [pdf].
Lehenkyi V., Point symmetries and controllability of dynamical systems, Proceedings of the National Academy of Sciences of Ukraine, 3, 1995, 15-17 (in Russian). [pdf].
Lehenkyi V., Applying Lie groups to the solution of problems in program control of airplane flight, Avtomatika, 6, 1992, 26-33 (in Russian). [pdf].
Lehenkyi V., Symmetries and the reduction problem in the design of optimal systems, Kibernet. i Vychisl. Tekhn., 95, 1992, 12-18 (in Russian). [pdf].