Buscar
Mostrando ítems 1-10 de 77
Applications of celestial mechanics in natural objects and spacecrafts
(Springer, 2017-12-01)
Studies related to Celestial Mechanics started long ago, and it is one of the oldest fields in Astronomy. It started to try to explain the motions of the stars in the sky, in particular the irregular motion of some of those ...
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 ...
Studying the lifetime of orbits around Moons in elliptic motion
(2016-10-01)
The main goal of the present paper is to study the lifetime of orbits around moons that are in elliptic motion around their parent planet. The lifetime of the orbits is defined as the time the orbit stays in orbit around ...
Determination of thrusts to generate artificial equilibrium points in binary systems with applications to a planar solar sail
(2019-01-30)
In this work, the artificial equilibrium points for a general two-body system are derived, visualized, and summarized as functions of the direction of the thrust, for several directions. The results for the Sun-Earth system ...
Building an “Escape Portal” with Tethers Fixed in Asteroids
(2018-09-15)
The main idea of this paper is to propose the construction of an “Escape Portal” to send a spacecraft to the exterior planets, or even to make it escape from the Solar System, using a Tethered Sling Shot Maneuver (TSSM) ...
Spacecraft motion around artificial equilibrium points
(2018-02-01)
The main goal of this paper is to describe the motion of a spacecraft around an artificial equilibrium point in the circular restricted three-body problem. The spacecraft is under the gravitational influence of the Sun and ...
Close approach of a cloud of particles around an oblate planet
(2016-10-01)
The goal of the present paper is to study close approaches of a cloud of particles with an oblate planet, which means that there is a J2 term in the gravitational potential of the planet. This cloud of particles is assumed ...
Analytical study of the swing-by maneuver in an elliptical system
(2018-02-01)
The objective of the present paper is to derive a set of analytical equations that describe a swing-by maneuver realized in a system of primaries that are in elliptical orbits. The goal is to calculate the variations of ...
Celestial mechanics, spacecrafts, and 50th years of the first humans on the Moon
(Springer, 2018-12-01)
Aerospace engineering is a relatively new topic in engineering. It deals with several aspects of activities related to space. It includes Astrodynamics, which is a field that studies the motion of spacecraft, like guidance ...
Quasi Satellite Orbits to observe a possible small moon of Pallas
(2020-02-01)
The purpose of this paper is to make a numerical search for natural orbits that can be used for a spacecraft to study a possible small moon of Pallas. There are many speculations about the existence of a small companion ...