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  • 1
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    Orbital maneuvers: Magellan aerobrakes into Venus' atmosphere (1994)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: The aerobraking orbital activities of Magelland during the gravity mapping of Venus are discussed. The goal of aerobraking was to circularize Magellan's orbit. By aerobraking the spacecraft into a nearly circula orbit, the Magellan team was able to provide scientists with a different data set to deepen their understanding of what is going on beneath Venus' surface. Before undertaking its gravity-mapping mission, Magellan completed three cycles of radar mapping. This repeated coverage allowed the spacecraft to see some of Venus' geologic features from different viewing angles. Various aspects of the mission are discussed, and maps of Venus are presented.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Planetary Report (ISSN 0736-3680); 14; 2; p. 6-13
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Gravity-Assist Mechanical Simulator for Outreach (2012)
    In:  CASI
    Details
    Publication Date: 2018-06-05
    Description: There is no convenient way to demonstrate mechanically, as an outreach (or inreach) topic, the angular momentum trade-offs and the conservation of angular momentum associated with gravityassist interplanetary trajectories. The mechanical concepts that underlie gravity assist are often misunderstood or confused, possibly because there is no mechanical analog to it in everyday experience. The Gravity Assist Mech - anical Simulator is a hands-on solution to this longstanding technical communications challenge. Users intuitively grasp the concepts, meeting specific educational objectives. A manually spun wheel with high angular mass and low-friction bearings supplies momentum to an attached spherical neodymium magnet that represents a planet orbiting the Sun. A steel bearing ball following a trajectory across a glass plate above the wheel and magnet undergoes an elastic collision with the revolving magnet, illustrating the gravitational elastic collision between spacecraft and planet on a gravity-assist interplanetary trajectory. Manually supplying the angular momentum for the elastic collision, rather than observing an animation, intuitively conveys the concepts, meeting nine specific educational objectives. Many NASA and JPL interplanetary missions are enabled by the gravity-assist technique.
    Keywords: Man/System Technology and Life Support
    Type: NASA Tech Briefs, November 2012; 17
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Mobile Multi-System Overview (2012)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: At the time of this reporting, there are 2,589 rich mobile devices used at JPL, including 1,550 iPhones and 968 Blackberrys. Considering a total JPL population of 5,961 employees, mobile applications have a total addressable market of 43 percent of the employees at JPL, and that number is rising. While it was found that no existing desktop tools can realistically be replaced by a mobile application, there is certainly a need to improve access to these desktop tools. When an alarm occurs and an engineer is away from his desk, a convenient means of accessing relevant data can save an engineer a great deal of time and improve his job efficiency. To identify which data is relevant, an engineer benefits from a succinct overview of the data housed in 13+ tools. This need can be well met by a single, rich, mobile application that provides access to desired data across tools in the ops infrastructure.
    Keywords: Computer Programming and Software
    Type: NPO-47634 , NASA Tech Briefs, September 2012; 55
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    The View from Mission Control: Dave Deconstructs Interplanetary Flight, to See How It Works, with an Eye Towards Cassini's 2017 Grand Finale Plunge into Saturn (2016)
    In:  Other Sources
    Details
    Publication Date: 2020-01-09
    Description: No abstract available
    Keywords: Lunar and Planetary Science and Exploration
    Type: JPL-CL-16-3208
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Development and Use of a Web-based Automated Command Request Application in a Distributed Operations Environment for the Cassini Saturn Mission (2006)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This paper discusses the evolution of the eCRF software from conception through deployment, challenges encountered and lessons learned, as well as current status and refinements.
    Keywords: Computer Programming and Software
    Type: Rept-56940 , AIAA 9th International Conference on Space Operations (SpaceOps); Jun 19, 2006 - Jun 24, 2006; Rome; Italy
    Format: text
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