This folder contains movies and a presentation of trajectories for the Earth Atmosphere Observatory as visualized in the Synergistic Engineering Environment (SEE). This folder should contain:
README.TXT (this file)
TELESCOPE_TRAJECTORY_VISUAL.PPT (presentation)
16 .avi files (movies used by the presentation):
EARTH_ALPHA1000.AVI
EARTH_ALPHA200.AVI
EARTH_ALPHA2000.AVI
EARTH_ALPHA3000.AVI
EARTH_ALPHA4000.AVI
EARTH_ALPHA500.AVI
EARTH_FIXED.AVI
EARTH_UNCONSTRAINED.AVI
TELESCOPE_ALPHA1000.AVI
TELESCOPE_ALPHA200.AVI
TELESCOPE_ALPHA2000.AVI
TELESCOPE_ALPHA3000.AVI
TELESCOPE_ALPHA4000.AVI
TELESCOPE_ALPHA500.AVI
TELESCOPE_FIXED.AVI
TELESCOPE_UNCONSTRAINED.AVI
The approximate size of this folder is 77 MB. Copy this folder from the server to your desktop before viewing the presentation or avi files. NOTE: The avi files must be in the same directory as the presentation before viewing the presentation. Use the presentation to view and navigate the avi files.
[ DESCRIPTION ]
Each Earth avi shows a 1x1 degrees field of view of the Earth eclipsing the Sun as seen from the Observatory. Any motion observed demonstrates the effects of the Observatory's drift within an alpha constraint. The field of view is always parallel to the Sun-Earth line. Each Telescope avi shows the Observatory trajectory from a positive Z point of view. A sphere following the trajectory represents the Observatory. The Earth is beyond the bottom of the screen.
Alpha represents the cylindrical constraint, expressed in kilometers, for the Observatory to drift in its trajectory about the Sun-Earth line. The fixed case constrains the Observatory to a reference point, approximating L2, fixed on the Sun-Earth line. The "unconstrained" case represents the Observatory's halo orbit about the reference point without cylindrical constraint.
[ USE ]
Use the presentation to view and navigate the avi files. To view the presentation, right click on the presentation, then select "Show" from the popup menu. If "Show" is not an option, open the presentation and press the F5 key, or select "View Show" from the "Slide Show" menu. This will put the presentation in full screen mode for normal viewing. You should not need to edit the presentation at any time.
Notice the buttons at the bottom of the slide. These buttons correspond to an Earth avi and a Telescope avi for a given cylindrical constraint. The buttons are used to navigate within the presentation. NOTE: The arrow keys and the Page Up/Down keys are disabled in this presentation; you must use the buttons to navigate the presentation.
Each avi represents approximately 30 days of trajectory data replayed at one day per second. When you are finished reviewing the visualizations, press the Esc key twice to exit the presentation. If you opened the presentation, you may close the editor at this time.
[ MISC ]
The SEE is a simulation and visualization tool for first order mission analysis and for demonstrating spacecraft behavior on mission. The SEE is currently supported by the Revolutionary Aerospace Systems Concepts, Next Generation Launch Technology, Engineering for Complex Systems, and the International Space Station. Current Release is 1.0 beta; current version is 1.1 beta. Contact Jonathan Cruz <Jonathan.N.Cruz@NASA.Gov> for more details.