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  • Spacecraft Design, Testing and Performance  (3)
  • Alvarez
  • Chemistry
  • 2005-2009  (4)
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  • 1
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    SeriesBuster: a Matlab program to extract spatio-temporal series from an earthquake database (2005)
    In:  Computers and Geosciences, Hannover, Bundesanstalt für Geowissenschaften und Rohstoffe, vol. 31, no. 4, pp. 521-525, pp. 1281
    Details
    Publication Date: 2005
    Keywords: Seismicity ; Statistical investigations ; software ; spatial ; and ; temporal ; distance ; Gutenberg-Richter magnitude frequency b-value ; Earthquake hazard ; CaG ; Alvarez ; Gomez ; Martinez ; Diaz
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    STEREO Mission Design (2007)
    In:  CASI
    Details
    Publication Date: 2018-06-06
    Description: STEREO (Solar-TErestrial RElations Observatory) is the third mission in the Solar Terrestrial Probes program (STP) of the National Aeronautics and Space Administration (NASA). STEREO is the first mission to utilize phasing loops and multiple lunar flybys to alter the trajectories of more than one satellite. This paper describes the launch computation methodology, the launch constraints, and the resulting nine launch windows that were prepared for STEREO. More details are provided for the window in late October 2006 that was actually used.
    Keywords: Spacecraft Design, Testing and Performance
    Type: Proceedings of the 20th International Symposium on Space Flight Dynamics; NASA/CP-2007-214158
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    STEREO Mission Design Implementation (2007)
    In:  CASI
    Details
    Publication Date: 2018-06-06
    Description: STEREO (Solar-TErrestrial RElations Observatory) is the third mission in the Solar Terrestrial Probes program (STP) of the National Aeronautics and Space Administration (NASA) Science Mission Directorate Sun-Earth Connection theme. This paper describes the successful implementation (lunar swingby targeting) of the mission following the first phasing orbit to deployment into the heliocentric mission orbits following the two lunar swingbys. The STEREO Project had to make some interesting trajectory decisions in order to exploit opportunities to image a bright comet and an unusual lunar transit across the Sun.
    Keywords: Spacecraft Design, Testing and Performance
    Type: Proceedings of the 20th International Symposium on Space Flight Dynamics; NASA/CP-2007-214158
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    A Direct Method for Fuel Optimal Maneuvers of Distributed Spacecraft in Multiple Flight Regimes (2005)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: We present a method to solve the impulsive minimum fuel maneuver problem for a distributed set of spacecraft. We develop the method assuming a non-linear dynamics model and parameterize the problem to allow the method to be applicable to multiple flight regimes including low-Earth orbits, highly-elliptic orbits (HEO), Lagrange point orbits, and interplanetary trajectories. Furthermore, the approach is not limited by the inter-spacecraft separation distances and is applicable to both small formations as well as large constellations. Semianalytical derivatives are derived for the changes in the total AV with respect to changes in the independent variables. We also apply a set of constraints to ensure that the fuel expenditure is equalized over the spacecraft in formation. We conclude with several examples and present optimal maneuver sequences for both a HE0 and libration point formation.
    Keywords: Spacecraft Design, Testing and Performance
    Type: AAS 05-158 , 15th AAS/AIAA Space Flight Mechanics Meeting; Jan 23, 2005 - Jan 27, 2005; Copper Mountain, CO; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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