Automated Design of Aerogravity-Assist Trajectories

Bonfiglio, Eugene; Longuski, James M.; Vinh, Nguyen X.

doi:10.2514/2.3649

Cited by 39 publications

(17 citation statements)

References 2 publications

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“…(3) Patching the multiple gravity-assist trajectory It patches gravity-assist trajectories together by the method of C 3 matching [7,8], where C 3 defines the hyperbolic excess velocity squared 2 ∞ V . The C 3 matching problem involves matching the magnitude of an incoming V to effect encounter with target body in the trajectory path.…”

Section: Evaluating the Accessibility Of Asteroid By Using Multiple Gmentioning

confidence: 99%

Target selection and transfer trajectories design for exploring asteroid mission

Cui

Dong

Cui

et al. 2010

Sci. China Technol. Sci.

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Technique of target selection and profiles of transfer trajectory for Chinese asteroid exploring mission are studied systemically. A complete set of approaches to selecting mission targets and designing the transfer trajectory is proposed. First, when selecting a target for mission, some factors regarded as the scientific motivations are discussed. Then, when analyzing the accessibility of targets, instead of the classical strategy, the multiple gravity-assist strategy is provided. The suitable and possible targets, taking into account scientific value and technically feasible, are obtained via selection and estimation. When designing the transfer trajectory for exploring asteroid mission, an approach to selecting gravity-assist celestial body is proposed. Finally, according to the mission constraints, the trajectory profile with 2-years ∆V-EGA for exploring asteroid is presented. Through analyzing the trajectory profile, unexpected result that the trajectory would pass by two main-belts asteroids is found. So, the original proposal is extended to the multiple flybys mission. It adds the scientific return for asteroid mission. exploring asteroid, target selection, multiple flybys, transfer trajectory Citation: Cui P Y, Qiao D, Cui H T, et al. Target selection and transfer trajectories design for exploring asteroid mission.

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Section: Evaluating the Accessibility Of Asteroid By Using Multiple Gmentioning

confidence: 99%

Target selection and transfer trajectories design for exploring asteroid mission

Cui

Dong

Cui

et al. 2010

Sci. China Technol. Sci.

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“…A number of studies have been performed on various mission scenarios that operate within or through a planet's atmosphere [16][17][18][19][20][21][22][23][24][25][26] . Five such trajectories in or through the Martian atmosphere have been examined in this work.…”

Section: Martian Missionsmentioning

confidence: 99%

High Lift-to-Drag Ratio Waveriders for Missions in the Martian Atmosphere

Rodi

Martin²,

Bennett³

2012

30th AIAA Applied Aerodynamics Conference

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An exploratory study has been performed on applying modern, high lift-to-drag ratio waveriders to a number of missions in and through the atmosphere of Mars. Earlier studies have most commonly employed lower lift-to-drag ratio conical-based waverider designs. The recent Osculating Flowfield Waverider Method can generate vehicles with greater aerodynamic performance than those from earlier methods. This improved waverider performance has favorable impacts for most of the examined missions.Waverider vehicles have been applied to a variety of missions including, aero-gravity assist during fly-bys, aerobraking for orbit capture, lifting entry from entry interface to landing, lifting ascents of return vehicles such as for sample-return missions, and boost-glide missions for travel from one surface location to another. The greater lift-to-drag ratio available from modern waveriders is a significant enhancer for most of the missions examined where this ratio has a positive influence. Nomenclature Cp= pressure coefficient D = aerodynamic drag L = aerodynamic lift L/D = lift-to-drag ratio M = freestream Mach number R = gas constant γ = ratio of specific heats

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“…This problem is related to the situations considered in the present research, because the atmosphere passage acts like an impulsive maneuver in some aspects. References on this topic are Lewis and McRonald (1992), Lohar et al (1994), Sims et al (1995), Lohar et al (1996), Bonfiglio et al (2000), Sims et al (2000), Trask and Coverstone (2004), Lavagna et al (2005) and Armellin et al (2007).…”

Section: Introductionmentioning

confidence: 98%