Mars-Jupiter Aerogravity Assist Trajectories for High-Energy Missions

Lohar, Fayyaz; Misra, A. K.; Mateescu, Dan

doi:10.2514/2.3186

Cited by 26 publications

(5 citation statements)

References 7 publications

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“…This maneuver is useful to generate changes in the heliocentric orbit to adjust the inclination with respect to the ecliptic of the target planet. It is also important to consider that multiple passages by the atmosphere of the planet increase the inclination, which makes possible, for example, to achieve orbits for polar missions in a target planet or relative to the ecliptic plane, for missions willing to observe the poles of the sun [41][42][43][44]. It is also important to say that, in this case, the AGAM is not analyzed for a specific mission, but generic maps are made that can be used later for a large family of missions.…”

Section: A Aerogravity-assist Maneuvermentioning

confidence: 99%

Effects of Bank Angle During Powered Aerogravity-Assist Maneuver

Piñeros

Prado

2021

Journal of Spacecraft and Rockets

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In a swing-by maneuver, the variation of energy of the spacecraft is controlled by the angle, velocity, and distance of approach. These parameters are defined by the incoming trajectory, when the spacecraft is far from the planetary atmosphere. The passage of the spacecraft by the atmosphere generates aerodynamic forces, affecting its trajectory and giving new forms of control, which are functions of the attitude of the spacecraft. This maneuver is called aerogravity-assist maneuver. This control can change the direction and magnitude of aerodynamic forces. Previous results showed the influence of the lift-to-drag ratio and the effects of the application of impulses in this maneuver. However, the variations of energy due to the control that can be given by the bank angle have not been studied before, and this study constitutes the main new aspect of the present paper. In this research, it is implemented the classical methodology to calculate the variations of energy to analyze the effects of the bank angle in aerogravity-assist maneuvers. This analysis can identify regions of collisions and the variations of energy as a function of the bank angle, giving new alternatives to this maneuver that are not available in the literature.

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Section: A Aerogravity-assist Maneuvermentioning

confidence: 99%

Effects of Bank Angle During Powered Aerogravity-Assist Maneuver

Piñeros

Prado

2021

Journal of Spacecraft and Rockets

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“…The authors propose a constant height maintenance during the atmospheric passage, constraining the planetary trajectory to be planar. Lohar et al, by deepening the former studies focusing on the heat load evaluation, concluded that those manoeuvres remain unreal because of the lack of technologies [5]. The proposed strategy takes advantage of mixed AGAM-GAM.…”

Section: Introductionmentioning

confidence: 97%

Interplanetary mission design with aero-assisted manoeuvres multi-objective evolutive optimization

2005

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“…This concept is known in the literature as "Aero-Gravity Assisted Maneuver" and there are many studies available on this topic. In particular, the use of "Aero-Gravity Assisted Maneuver" in Mars and/or Venus using higher values for the lift/drag ratio to go to more distant planets, in particular Pluto, or even the Sun, are considered in many publications (McRonald and Randolph 1992;Lewis and McRonald 1992;Bonfiglio et al 2000;Sims et al 1995Sims et al , 2000Lohar et al 1997;Randolph and McRonald 1992). The consideration of the shape and/or structure of the spacecraft is also studied (Armellin et al 2006(Armellin et al , 2007.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric close approaches with the Earth considering drag and lift forces

et al. 2015

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A maneuver called "Aero-Gravity Assisted" is known in the literature to increase the energy gains given by a close approach between a spacecraft and a planet using the atmosphere of the planet. In a sequence of studies related to this problem, the present paper studies close approaches between a spacecraft and the Earth, in situations where the passage is close enough to the surface of the Earth such that the spacecraft crosses its atmosphere. The dynamical model considers the atmosphere of the Earth, in terms of drag and lift, the gravitational fields of the Earth and the Sun, assumed to be points of mass, and the spacecraft. The Earth and the Sun are assumed to be in circular coplanar orbits around their common center of mass. The equations of motion are the ones given by the circular planar restricted three-body problem with the addition of the forces generated by the atmospheric drag and lift. The primary objective is to map the variations of energy of the orbits of the spacecraft due to this close approach. The results show how the atmosphere affects the trajectory of the spacecraft, generating situations where the variation of energy changes sign with respect to the gravity part of the maneuver or where they have a zero net result, based in the equilibrium

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Mars-Jupiter Aerogravity Assist Trajectories for High-Energy Missions

Cited by 26 publications

References 7 publications

Effects of Bank Angle During Powered Aerogravity-Assist Maneuver

Effects of Bank Angle During Powered Aerogravity-Assist Maneuver

Interplanetary mission design with aero-assisted manoeuvres multi-objective evolutive optimization

Atmospheric close approaches with the Earth considering drag and lift forces

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