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YASim: Difference between revisions
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== YASim design notes == | == YASim design notes == | ||
Andy Ross's original design notes for YASim can be found in [ftp://ftp.uni-duisburg.de/FlightGear/Docs/YASim-simnotes.pdf this PDF file]. These provide some useful background for how YASim works. | Andy Ross's original design notes for YASim can be found in [ftp://ftp.uni-duisburg.de/FlightGear/Docs/YASim-simnotes.pdf this PDF file]. These provide some useful background for how YASim works. | ||
== New features in version 2017.2 == | |||
The following is under development and hopefully finds its way into FG version 2017.2 | |||
=== XML parser support for metric and imperial units === | |||
To make live easier for aircraft developers, the parser supports new additional attributes with a unit suffix, e.g. speed-kt for knots and speed-kmh for kilometer per hour. | |||
* <code><aircraft {mass, mass-lbs, mass-kg}="12345" ></code> | |||
* <code><approach {speed, speed-kt, speed-kmh}="123" ></code> | |||
* <code><cruise {speed, speed-kt, speed-kmh}="123" ></code> | |||
* <code><solve-weight {weight, weight-lbs, weight-kg}="123" ></code> | |||
* <code><jet {mass, mass-lbs, mass-kg}="1234" ></code> | |||
* <code><tank {capacity, capacity-lbs, capacity-kg}="12345" ></code> | |||
* <code><ballast {mass, mass-lbs, mass-kg}="1234" ></code> | |||
=== Export of YASim internals to property tree === | |||
Ever wondered what is going on inside yasim. Lots of information will be available in the property tree soon | |||
in <code> /fdm/yasim/ </code>. | |||
Some information is static and shows what yasim has compiled from your XML. | |||
Other information is "run-time" like forces, speed, acceleration, c.g., mass you-name-it | |||
(2DO: write details here) | |||
=== aircraft developer helpers === | |||
The command line utility got some new options. For some strange reason, the -a parameter expects altitude in meters instead of ft. This is now visible in the usage message but left unchanged for compatibility. | |||
<code> | |||
Usage | |||
yasim <aircraft.xml> [-g [-a meters] [-s kts] [-approach | -cruise] ] | |||
yasim <aircraft.xml> [-d [-a meters] [-approach | -cruise] ] | |||
yasim <aircraft.xml> [-m] | |||
-g print lift/drag table: aoa, lift, drag, lift/drag | |||
-d print drag over TAS: kts, drag | |||
-a set altitude in meters! | |||
-s set speed in knots | |||
-m print mass distribution table: id, x, y, z, mass | |||
</code> | |||
== Related content == | == Related content == | ||