Geodesic
Methods of mathematical modeling of the action of a medium on a conical body
Contemporary Mathematics and Its Applications, Tome 98 (2015), pp. 9-16 
A. V. Andreev; M. V. Shamolin. Methods of mathematical modeling of the action of a medium on a conical body. Contemporary Mathematics and Its Applications, Tome 98 (2015), pp. 9-16. http://geodesic.mathdoc.fr/item/CMA_2015_98_a1/
@article{CMA_2015_98_a1,
     author = {A. V. Andreev and M. V. Shamolin},
     title = {Methods of mathematical modeling of the action of a medium on a conical body},
     journal = {Contemporary Mathematics and Its Applications},
     pages = {9--16},
     year = {2015},
     volume = {98},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMA_2015_98_a1/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

We consider a mathematical model of a plane-parallel action of a medium on a rigid body whose surface has a part which is a circular cone. We present a complete system of equations of motion under the quasi-stationarity conditions. The dynamical part of equations of motion form an independent system that possesses an independent second-order subsystem on a two-dimensional cylinder. We obtain an infinite family of phase portraits on the phase cylinder of quasi-velocities corresponding to the presence in the system of only a nonconservative pair of forces.