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Persistence of periodic orbits with sliding or sewing by singular perturbation
(2015-01-01)
In this paper we deal with piecewise smooth singularly perturbed systems. We study the effect of singular perturbation when the phase portrait of the reduced problem has periodic orbits with sliding or sewing points. ...
Manobra orbital terra-lua-terra
(Universidade Estadual Paulista (Unesp), 2009-02-19)
No presente trabalho é abordada a manobra orbital Terra-Lua - Terra com o objetivo de um menor consumo de combustível. Inicialmente o satélite executa uma órbita em torno da Terra. Em um certo instante um impulso é efetuado ...
Manobra orbital terra-lua-terra
(Universidade Estadual Paulista (Unesp), 2009-02-19)
No presente trabalho é abordada a manobra orbital Terra-Lua - Terra com o objetivo de um menor consumo de combustível. Inicialmente o satélite executa uma órbita em torno da Terra. Em um certo instante um impulso é efetuado ...
FROZEN ORBITS AROUND EUROPA
(World Scientific Publ Co Pte Ltd, 2014)
Intervening in Earth's climate system through space-based solar reflectors
(2016-07-01)
Several space-based climate engineering methods, including shading the Earth with a particle ring for active cooling, or the use of orbital reflectors to increase the total insolation of Mars for climate warming have been ...
On the existence and stability of periodic orbits in non ideal problems: General results
(2007-11-01)
In this work, motivated by non-ideal mechanical systems, we investigate the following O.D.E. ẋ = f (x) + εg (x, t) + ε2g (x, t, ε), where x ∈ Ω ⊂ ℝn, g, g are T periodic functions of t and there is a 0 ∈ Ω such that f (a ...
On the existence and stability of periodic orbits in non ideal problems: General results
(2007-11-01)
In this work, motivated by non-ideal mechanical systems, we investigate the following O.D.E. ẋ = f (x) + εg (x, t) + ε2g (x, t, ε), where x ∈ Ω ⊂ ℝn, g, g are T periodic functions of t and there is a 0 ∈ Ω such that f (a ...
A Study of Single- and Double-Averaged Second-Order Models to Evaluate Third-Body Perturbation Considering Elliptic Orbits for the Perturbing Body
(Hindawi Publishing Corporation, 2013-01-01)
The equations for the variations of the Keplerian elements of the orbit of a spacecraft perturbed by a third body are developed using a single average over the motion of the spacecraft, considering an elliptic orbit for ...