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In August 2000, an independent assessment of the Europa Orbiter baseline mission was performed to evaluate the planned implementation. As part of this activity, multiple alternative mission concepts were investigated that could meet the full science objectives as well as concepts that could meet a reduced set of science objectives.
The Galileo spacecraft has sent back tantalizing image data hinting at a vast ocean beneath a thick ice crust on Europa, one of Jupiter's moons which is about the size of our moon.
An Europa Lander mission has been assigned high priority for the post-2005 time frame in NASA's Space Science Enterprise Strategic Plan.
We measured the rate of sulfate anion production for cyclo-octal sulfur grains in frozen water at temperatures, energies, and dose rates appropriate for Europa using energetic electrons.
This paper describes preliminary navigation analyses for the proposed Europa Orbiter mission.
The long-term stable trajectories around Europa, one of the Galilean moons of Jupiter, are analyzed for their potential applications in spacecraft trajectory design, such as end of mission desposal options, backup orbits, or intermediary targets for transfer trajectories.
A global grid search is performed to find axi= and doubly=symmetric periodic orbits in the Restricted Three Body Problem using the dimensioned parameters associated with the Jupiter-Europa system.
A global grid search is performed to find simply- and doubly-symmetric periodic orbits in the Restricted Three Body Problem using the dimensioned parameters associated with the Jupiter-Europa system.
The purpose of this study was to assess the science merit, technical risk and qualitative assessment of relative cost of alternative architectural implementations as applied to a first dedicated mission to Europa. The objective was accomplished through an examination of mission concepts resulting from previous and ongoing studies. Key architectural elements that were considered include moon orbiters, flybys (single flybys like New Horizons and multiple flybys similar to the ongoing Jupiter System Observer study), sample return and in situ landers and penetrators.
This viewgraph presentation reviews the Europa Explorer. The contents include: 1) Science and TMC Panel Comments; 2) 2008 Study Ground Rules; and 3) Approach for Meeting New Ground Rules.
This slide presentation discusses the studies done to outline the concept of a explorer mission to the Jovian Moon, Europa, that would allow a further understanding of the Geophysics of that moon. Included in the presentation are an outline of the possible trajectory, including flyby assists, a listing of the science objectives and the scientific instruments that would be used in the completion of the objectives.
By leveraging the existing Model-Based Systems Engineering (MBSE) infrastructure at JPL and adding a modest investment, the Europa Mission Concept Study made striking advances in mission concept capture and analysis. This effort has reaffirmed the importance of architecting and successfully harnessed the synergistic relationship of system modeling to mission architecting. It clearly demonstrated that MBSE can provide greater agility than traditional systems engineering methods. This paper will describe the successful application of MBSE in the dynamic environment of early mission formulation, the significant results produced and lessons learned in the process.
Model propellant slosh for Europa Clipper using two pendulums such that controls engineers can predict slosh behavior during the mission. Importance of predicting propellant slosh; (1) Sloshing changes CM (center of mass) of spacecraft and exerts forces and torques on spacecraft. (2) Avoid natural frequencies of structures. (3) Size ACS (Attitude Control Systems) thrusters to counteract forces and torques. Can model sloshing fluid as two pendulums with specific parameters (mass, length, damping),
Europa, the satellite of Jupiter, probably hosts a subsurface water ocean but the thickness of the outer ice crust is poorly constrained and the role of liquid water in its complex tectonics is debated.
A Europa Lander mission has been assigned high priority for the post-2005 time frame in NASA's Space Science Enterprise Strategic Plan.
The nature of Earth-Jupiter-Earth trajectories that can flyby close to Europa is described and details of opportunities with launches from 2000 through 2003 are presented.
The Europa Orbiter mission is planned to be the first in NASA's Outer Planets/Solar Probe Program.
Spatially resolved infrared and ultraviolet wavelength spectra of Europa's leading, anti-jovian, quadrant observed from the Galileo spacecraft show absorption features due to hydrogen peroxide.