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Add "spring" and "damp" tunables to the documentation, and use them to

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fix the 747's nose gear bounce.
This commit is contained in:
aross 2002-11-09 21:09:33 +00:00
parent 17b40e6b26
commit d0734a2a2b
2 changed files with 15 additions and 1 deletions
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4
Aircraft-yasim/747.xml
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@ -80,7 +80,9 @@
<control-input axis="/controls/throttle[1]" control="THROTTLE"/>
</jet>
<gear x="-5.42" y="0.00" z="-5.42" compression="2"> <!-- nose -->
<!-- nose -->
<gear x="-5.42" y="0.00" z="-5.42"
compression="0.75" spring="0.7" damp="4">
<control-input axis="/controls/rudder" control="STEER" square="true"/>
<control-input axis="/controls/gear-down" control="EXTEND"/>
<control-output control="EXTEND" prop="/gear/gear[0]/position-norm"/>

12
Aircraft-yasim/README.yasim
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@ -170,6 +170,18 @@ gear: Defines a landing gear. Accepts <control> subtags to map
retract-time: The time, in seconds, that the gear takes to
fully retract or extend. Defaults to zero,
which indicates a non-retractable gear.
spring: A dimensionless multiplier for the automatically
generated spring constant. Increase to make
the gear stiffer, decrease to make it
squishier.
damp: A dimensionless multipler for the automatically
generated damping coefficient. Decrease to
make the gear "bouncier", increase to make it
"slower". Beware of increasing this too far:
very high damping forces can result and make
the numerics unstable. If you can't make the
gear stop bouncing with this number, try
increasing the compression length instead.
tank: A fuel tank. Tanks in the aircraft are identified
numerically (starting from zero), in the order they are