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Escape maneuvers with lunar gravity assists

Alex Siniscalco

Escape maneuvers with lunar gravity assists.

Rel. Lorenzo Casalino. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Aerospaziale, 2018

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For spacecraft interplanetary mission, gravity assist manoeuvres are usually used because they allow to get generally high ∆V without have recourse to the consumption of propellant, but exploiting the energy provided by the gravitational attraction of a celestial body. This allows to improving the useful mass for a specific mission, for a modest increase in flight time. Thus, when evasion from Earth’s sphere of influence is considered, lunar gravity assist manoeuvers become a valid alternative to direct escapes. In this paper two consecutive gravity assist manoeuvres are considered and is researched the possible moon-to-moon trajectories that allow their. Af- terward, considering different spacecraft initial speeds relative to Moon, the effect on the escape orbit is analyzed, with the purpose to link the features of the latter – heliocentric flight-path angle and declination – to the maximum obtainable specific mechanical energy (i.e. the achievable escape velocity).

Relators: Lorenzo Casalino
Academic year: 2018/19
Publication type: Electronic
Number of Pages: 96
Corso di laurea: Corso di laurea magistrale in Ingegneria Aerospaziale
Classe di laurea: New organization > Master science > LM-20 - AEROSPATIAL AND ASTRONAUTIC ENGINEERING
Aziende collaboratrici: UNSPECIFIED
URI: http://webthesis.biblio.polito.it/id/eprint/8772
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