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Global Reference Atmospheric Models, Including Thermospheres, for Mars, Venus and EarthThis document is the viewgraph slides of the presentation. Marshall Space Flight Center's Natural Environments Branch has developed Global Reference Atmospheric Models (GRAMs) for Mars, Venus, Earth, and other solar system destinations. Mars-GRAM has been widely used for engineering applications including systems design, performance analysis, and operations planning for aerobraking, entry descent and landing, and aerocapture. Preliminary results are presented, comparing Mars-GRAM with measurements from Mars Reconnaissance Orbiter (MRO) during its aerobraking in Mars thermosphere. Venus-GRAM is based on the Committee on Space Research (COSPAR) Venus International Reference Atmosphere (VIRA), and is suitable for similar engineering applications in the thermosphere or other altitude regions of the atmosphere of Venus. Until recently, the thermosphere in Earth-GRAM has been represented by the Marshall Engineering Thermosphere (MET) model. Earth-GRAM has recently been revised. In addition to including an updated version of MET, it now includes an option to use the Naval Research Laboratory Mass Spectrometer Incoherent Scatter Radar Extended Model (NRLMSISE-00) as an alternate thermospheric model. Some characteristics and results from Venus-GRAM and Earth-GRAM thermospheres are also presented.
Document ID
20060048492
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Justh, Hilary L. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Justus, C. G. (Morgan Research Corp. Huntsville, AL, United States)
Keller, Vernon W. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2006
Subject Category
Lunar And Planetary Science And Exploration
Meeting Information
Meeting: AIAA/AAS Astrodynamics Specialists Conference
Location: Keystone, CO
Country: United States
Start Date: August 21, 2006
End Date: August 24, 2006
Sponsors: American Astronomical Society, American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Public Use Permitted.

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