Difference between revisions of "User talk:Tblaxland"
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= State Vector MFD = | = State Vector MFD = | ||
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Revision as of 12:20, 19 January 2009
State Vector MFD
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Project home: StateVectorMFD at Orbit Hangar |
StateVectorMFD is basic MFD for displaying a vessel's state vectors at the current time and at a some other time relative to the present time.
Operation
Loading the MFD
Load the MFD by pressing the MFD "SEL" button and select "State Vector". The MFD will show the current state vectors in a column on the left hand side and the state vectors for a future time in a column on the right hand side.
See below for the default settings that are used when the MFD is first loaded.
Changing T+
To change the time used for predicting the future state vectors, press the T+ button and enter a time (in seconds) in the dialog box. This dialog box also takes SI prefixes in the input, eg, 5100 seconds could be entered as 5.1k. T+ may also be negative. Default value: 0 seconds.
Changing the Reference Body
Press the REF button and select a new reference body. Default value: current major gravitational influence.
Changing the Numerical Notation
Press the NOT button to toggle the numerical notation between SI prefixes and exponential form. Default value: SI prefixes.
Non-spherical Gravity Effects
Estimated corrections to the future state vectors are added automatically if non-spherical gravity sources are enabled and they are presently acting on the vessel.
Changing Vessel Focus
When you change vessel focus, the MFD will remember the settings for each vessel and MFD position.
Saving/Loading Scenarios
This MFD does not save or load its state to the scenario file at this stage so all settings (reference body, T+) will be reset when reloading the scenario.
Coordinate Systems
The state vectors are displayed in the Orbiter left-hand ecliptic coordinate system (+X - sun direction at vernal equinox, +Y - ecliptic north). Support for other systems may be added in the future.
Credits
This MFD uses the Kepler Orbital Simulation Toolkit (KOST) by CJ Plooy and Tim Blaxland. A copy of KOST is included with the source code.
It also use the built-in Orbiter pop-up menus for selecting the reference body. Thanks to CJ Plooy for his work in making this functionality available.
Two functions from FreeOrbitMFD by CJ Plooy were used for formatting the SI prefixes. See source code for details.
Copyright Notice
Copyright 2009 by Tim Blaxland (tblaxland@gmail.com)
StateVectorMFD is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
StateVectorMFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with StateVectorMFD. If not, see <http://www.gnu.org/licenses/>.