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Alternative paths for insertion of probes into high inclination lunar orbits
(Elsevier B.V., 2007-01-01)
The dynamics of the restricted three-body Earth-Moon-particle problem predicts the existence of direct periodic orbits around the Lagrangian equilibrium point L1. From these orbits, we derive a set of trajectories that ...
Transfers from the Earth to L2 Halo orbits in the Earth–Moon bicircular problem
This paper deals with direct transfers from the Earth to Halo orbits related to the translunar point. The gravitational influence of the Sun as a fourth body is taken under consideration by means of the Bicircular Problem ...
Trends in the F2 ionospheric layer due to long-term variations in the Earth's magnetic field
(Elsevier, 2009-06)
The Earth's magnetic field presents long-term variations with changes in strength and orientation. Particularly, changes in the dip angle (I) and, consequently, in the sin(I)cos(I) factor, affect the thermospheric neutral ...
Some aspects of the dynamics of fictitious Earth's satellites
(Elsevier B.V., 2001-01-01)
In this work we study the dynamics of fictitious satellites of the Earth. In the first part we do not consider the effect of the Moon and study the dynamics in the restrict three-body model, i.e., a massless satellite under ...
Some aspects of the dynamics of fictitious Earth's satellites
(Elsevier B.V., 2001-01-01)
In this work we study the dynamics of fictitious satellites of the Earth. In the first part we do not consider the effect of the Moon and study the dynamics in the restrict three-body model, i.e., a massless satellite under ...
Precipitation of rare earth phosphates from H3PO4 solutions
(Gordon Breach Sci Publ Ltd, 1996-01-01)
A study of several factors has been carried out in order to determine their influence on rare earth phosphates precipitation from H3PO4 solutions obtained after the treatment of the Kola phosphate rock.