Zobrazeno 1 - 10
of 15
pro vyhledávání: '"S N, Evdokimov"'
Autor:
E. A. Mikrin, S. I. Klimanov, S. N. Evdokimov, Andrey Georgievich Tuchin, Andrey Nikolaevich Korchagin, Alexander Sergeevich Samotokhin, Yu. G. Sikharulidze
Publikováno v:
Cosmic Research. 58:122-137
The task of guidance of a spacecraft, returning from the Moon, to a given landing area, under an effect of “magnified” disturbing factors, is considered. The earlier developed terminal algorithm for control of the descent from a near-Earth orbit
Autor:
E. A. Mikrin, Yu. G. Sikharulidze, Andrey Georgievich Tuchin, Alexander Sergeevich Samotokhin, S. I. Klimanov, S. N. Evdokimov, Andrey Nikolaevich Korchagin
Publikováno v:
Cosmic Research. 57:176-187
The problem of reentry vehicle control during its descent from a near-Earth orbit is considered under conditions of “enhanced” disturbances. The earlier developed terminal descent control algorithm is considerably improved to satisfy constraints
Publikováno v:
Russian Journal of Organic Chemistry. 55:161-167
The NMR spectra of several heterocyclic compounds synthesized at Omsk universities revealed manifestation of a diasteomerism at a large (up to fifteen bonds) distance between the stereogenic centers. This phenomenon was explained by a regular helical
Autor:
V. P. Talsi, S. N. Evdokimov
Publikováno v:
Russian Journal of Organic Chemistry. 53:1630-1636
Dynamic NMR was applied to measuring the value ΔG≠ characterizing the height of the barrier to the pyramidal inversion of the nitrogen atom in carbamate and thiocarbamate anions formed at the reaction of 2-aminoethanol with CO2 and COS. The refine
Autor:
E. A. Mikrin, A. N. Korchagin, Andrey Georgievich Tuchin, Yu. G. Sikharulidze, S. I. Klimanov, S. N. Evdokimov
Publikováno v:
Journal of Computer and Systems Sciences International. 56:483-491
We consider the problem of attitude control of a descent vehicle in the Earth’s atmosphere returning from the Moon. A stabilization algorithm with a deadband and the optimal parameters, obtained with the numerical method, provide adequate landing a
Autor:
Andrey Georgievich Tuchin, E. A. Mikrin, A. N. Korchagin, Yu. G. Sikharulidze, S. N. Evdokimov, S. I. Klimanov
Publikováno v:
Journal of Computer and Systems Sciences International. 56:300-310
The algorithm of the two-point boundary problem is developed for choice the nominal deorbit point, from which a descent vehicle is enabled to land at a given place without a cross-range maneuver. The method is suggested and the example is given of co
Autor:
S. I. Klimanov, A. N. Korchagin, D. A. Tuchin, Yu. G. Sikharulidze, Andrey Georgievich Tuchin, E. A. Mikrin, S. N. Evdokimov
Publikováno v:
Journal of Computer and Systems Sciences International. 53:908-924
Results of the boundary value problem solution for determining the trajectory of returning from the lunar orbit and landing on the Vostochnyi launch site are presented. The solution includes the calculation of the required expenditure of the characte
Publikováno v:
Journal of Computer and Systems Sciences International. 53:267-274
A concept of the terminal descent control algorithm of the descent module at reentry into the Earth atmosphere with near-parabolic velocity is proposed. Trajectories with one and two (skip reentry) reentries are considered. Simultaneously, downrange
Publikováno v:
Journal of Computer and Systems Sciences International. 53:137-148
A model of the general motion of the descent module that includes the motion of its center of mass and the attitude motion is constructed. An improved estimate of the reachability region in the case of descent in the disturbed Earth atmosphere is obt
Publikováno v:
Journal of Computer and Systems Sciences International. 51:802-817
Results concerning the terminal guidance algorithm at the reentry of the descent module into the Earth atmosphere are presented. This algorithm simultaneously eliminates predicted deviations in the downrange and crossrange directions. The restriction