Tension force in nanosatellite tethers systems

The use of innovative technologies in space missions has evolved considerably in the last decade. The use of large cables in space structures to connect spacecrafts and satellites with the goal to minimize cost of missions created a new field to be explored. A brief explanation will be considered about papers related to the equilibrium and stability of the movement of space systems connected by cables, known as Tether Systems. It will be presented the mathematical formulation for the system formed by two point masses connected by a tether in the central force field, in a Keplerian movement. The Lagrangian formulation was used to describe the rotational movement of the dumbbell-like system. Results of system behavior, tension and kinetic energy will be presented for two different situations, considering equal masses and different masses.

Palavras-chave

Astrodinâmica Satélites artificiais Sistemas espaciais

Idioma

Inglês

Citação

J. Phys.: Conf. Ser., v. 1365, 2019.

URI

http://hdl.handle.net/11449/192410

Financiadores

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Pró-Reitoria de Pesquisa (PROPe UNESP)

Coleções

São João da Boa Vista - FESJBV - Faculdade de Engenharia, São João da Boa Vista

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Acesso aberto

Orbital maneuvers for asteroids using genetic algorithm

(IOP Publishing, 2019-10-01)

Neves, Guilherme Marcos

;

Santos, Denilson P. S.

;

Domingos, Rita de C.

;

Formiga, Jorge K. S.

;

Universidade Estadual Paulista (Unesp)

Near Earth objects (NEOs) are comets and asteroids that orbit the vicinity of the Earth. The scientific interest in comets and asteroids is due in large part to their status as remnants remaining relatively unchanged from the process of forming the solar system some 4.6 billion years ago, and some asteroids are made of precious metals such as platinum. Genetic algorithms are a particular class of evolutionary algorithms that use techniques inspired by evolutionary biology such as heredity, mutation, natural selection, and recombination. They can also be defined as global optimization algorithms and model a solution to a specific problem. This method provides a way to find solutions to problems that would be unlikely to be analytically feasible. The present work aims to use this method to optimize the consumption of fuel in Rendezvous maneuvers in interplanetary missions in a context where one wishes to send a probe to an asteroid to study it.