Mechanics

Descent of Nanosatellite from Low Earth Orbit by Ion Beam

Authors: Ryazanov V. V., Ledkov A. S.

The work is devoted to the problem of contactless CubSat3U nanosatellites removal from low Earth orbit bymean sof anion beam, which is created by the engine of an active spacecraft. The advant age of this methodis that there is no needfor additional mean sof dockingand gripping. A mathematical model of the nanosatellite plane motion under the action of the ion beam and gravitational forces is developed. Two approaches are used to simulate the ion beam impacton nano satellite.The first one involves the use of known dimensionless aerodynamic coefficients.

A Couple Contact Loading at the Unilateral Contact of Beams

Authors: Osipenko M. A., Kasatkin A. A.

The contact problem for the structure consisting of two beams is considered. The beams have the different lengths and the different variable thicknesses. One end of the shorter beam is clamped coinciding with the hinge dend of the longer beam.The other ends of the beams are free. The given loading is applied to the longer beam. The beams undergo the weak joint bending with the unilateral (receding) contact. There is no friction between the beams.The bending of each beam is described by Bernoulli–Eulermodel.The contact problem is to find the contact loading, i.e.

Influence of Doping by Oxygen Atoms of Porous Carbon Nanostructures on Values of Young’s Modulus

Authors: Kolesnikova A. S., Prikhodchenko C. A.

Porous carbon structures are actively used in various fields of science and technology. The mechanical strength of porous carbon structures with a density of 1.4 g /cm3 with different pore sizes and different concentrations of oxygen atoms was investigated. Investigation of the mechanical properties of porous carbon nanostructures was carried out on three models with different sizes of nanopores (0.4–0.8 nm, 0.2–1.12 nm, 0.7–1.3 nm).