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  • 1
    Publication Date: 2011-08-24
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Journal of Spacecraft and Rockets (ISSN 0022-4650); 29; 5; p. 633-640.
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  • 2
    Publication Date: 2019-07-27
    Description: A description is given of the computational codes that are to be used in studies of the heating and aerodynamic performance of entry probes for the scientific exploration of the planets Jupiter, Saturn, and Uranus. These codes include a time-asymptotic numerical method which takes into account radiative transport and equilibrium chemistry for the direct solution of the radiative, inviscid flow over an axisymmetric or two-dimensional body. The method considers both supersonic and subsonic flow in the downstream region. Another code represents a laminar, viscous-shock-layer solution.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: AIAA PAPER 75-1148 , American Institute of Aeronautics and Astronautics and American Geophysical Union, Conference on the Exploration of the Outer Planets; Sept. 17-19, 1975; St. Louis, MO
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  • 3
    Publication Date: 2019-06-28
    Description: Surface heating and flow field results for the stagnation region of a planetary exploration vehicle entering the Martian atmosphere are presented. Solutions for the high-energy viscous flow fields with complete radiative heating are derived from a viscous-shock-layer analysis for laminar flow under chemical equilibrium conditions. Results are shown with and without coupled radiation ablation injection utilizing the recently developed curve fits for the transport and thermodynamic properties of Martian atmospheric and ablation species. This analysis includes a strongly absorbing boundary layer and, therefore, gives much lower radiative heat transfer rates than those obtained from inviscid analyses.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: AIAA PAPER 91-1345
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  • 4
    Publication Date: 2019-07-13
    Description: A survey of the effects of mass loss, shape change and real-gas aerodynamics on a Jovian atmospheric reconstruction experiment is carried out. Techniques used to reconstruct atmospheric profiles from entry probe measurements are discussed and some of the parameters which affect their accuracy are identified. Trajectory analyses and real-gas, radiatively-coupled flow field analyses (which include the effects of mass loss and shape change) are carried out for several candidate probe configurations. From these analyses, uncertainties in the atmospheric reconstruction procedure are estimated. Finally, the prospects for reducing these uncertainties by optimizing probe configuration and by instrumentation of the probe heat shield to measure actual shape change are considered.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: IAF PAPER 76-073 , International Astronautical Congress; Oct 10, 1976 - Oct 16, 1976; Anaheim, CA
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