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fgdata/Aircraft/c172p/Systems/c172p-engine.xml

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<?xml version="1.0"?>
<!--
c172p damage effects for JSBSim.
Copyright (c) 2015 Gilberto Agostinho
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-->
<system name="engine">
<channel name="oil">
<fcs_function name="consumed-oil-weight">
<function>
<product>
<property>/engines/active-engine/oil-lacking</property>
<value>1.7686</value>
<value>-1</value>
</product>
</function>
<output>/fdm/jsbsim/inertia/pointmass-weight-lbs[16]</output>
</fcs_function>
</channel>
<channel name="carburetor">
<fcs_function name="Carb heat on causes RPM drop on 160 HP engine">
<function>
<ifthen>
<property>/controls/anti-ice/engine[0]/carb-heat</property>
<value>0.475</value>
<value>0.15185</value>
</ifthen>
</function>
<output>/fdm/jsbsim/propulsion/engine[0]/air-intake-impedance-factor</output>
</fcs_function>
<fcs_function name="Carb heat on causes RPM drop on 180 HP engine">
<function>
<ifthen>
<property>/controls/anti-ice/engine[1]/carb-heat</property>
<value>0.475</value>
<value>0.15185</value>
</ifthen>
</function>
<output>/fdm/jsbsim/propulsion/engine[1]/air-intake-impedance-factor</output>
</fcs_function>
</channel>
<channel name="damage">
<fcs_function name="engine/rpm-over-redline">
<function>
<sum>
<property>/engines/active-engine/rpm</property>
<value>-2750</value>
<property>engine/rpm-over-redline-offset</property>
</sum>
</function>
<clipto>
<min>0</min>
<max>10000</max>
</clipto>
</fcs_function>
<fcs_function name="engine/rpm-over-redline-offset"> <!-- reduce the damage threshold as damage increases -->
<function>
<product>
<pow>
<property>engine/damage-level</property>
<value>2</value>
</pow>
<value>0.00075</value>
</product>
</function>
<clipto>
<min>0</min>
<max>10000</max>
</clipto>
</fcs_function>
<fcs_function name="engine/oil-temp-above-max">
<function>
<sum>
<property>/engines/active-engine/oil-temperature-degf</property>
<value>-245</value>
</sum>
</function>
<clipto>
<min>0</min>
<max>1000</max>
</clipto>
</fcs_function>
<fcs_function name="engine-damage"> <!-- it0uchpods suggests this to allow repair button to reset to 0 -->
<function>
<ifthen>
<and>
<eq>
<property>settings/damage</property>
<value>1</value>
</eq>
<eq>
<property>/engines/active-engine/damage_allowed</property>
<value>1</value>
</eq>
</and>
<sum>
<property>engine/damage-level</property>
<product>
<table>
<independentVar lookup="row">engine/rpm-over-redline</independentVar>
<independentVar lookup="column">engine/oil-temp-above-max</independentVar>
<tableData>
0 50 100 250
0 0 1 9 16
100 1 2 16 50
200 4 5 25 65
300 9 10 36 82
400 16 17 49 101
500 25 25 64 122
600 36 37 81 145
700 49 50 100 170
800 64 65 121 197
900 81 82 144 226
1000 100 101 169 256
1100 121 123 196 289
1200 144 147 225 324
1300 169 175 256 361
1400 196 199 289 400
1500 225 228 324 441
</tableData>
</table>
<property>simulation/channel-dt</property>
</product>
</sum>
<value>0</value> <!-- this is the value if damage is disabled -->
</ifthen>
</function>
<output>engine/damage-level</output>
</fcs_function>
<fcs_function>
<function> <!-- derived from a graphical calculator: 0.01x pow 2 + 2.15x + 0.625 multiplied by 2.4 -->
<product>
<sum>
<product>
<value>0.00008</value>
<pow>
<property>engine/damage-level</property>
<value>2</value>
</pow>
</product>
<value>0.625</value>
</sum>
<value>2.4</value>
</product>
</function>
<clipto>
<min>1.5</min>
<max>10000</max>
</clipto>
<output>engine/friction-hp</output>
</fcs_function>
<switch name="engine/engine-0-friction-hp">
<default value="1.5"/>
<test logic="AND" value="engine/friction-hp">
/controls/engines/active-engine eq 0
</test>
<output>/fdm/jsbsim/propulsion/engine[0]/friction-hp</output>
</switch>
<switch name="engine/engine-1-friction-hp">
<default value="1.5"/>
<test logic="AND" value="engine/friction-hp">
/controls/engines/active-engine eq 1
</test>
<output>/fdm/jsbsim/propulsion/engine[1]/friction-hp</output>
</switch>
<switch name="engine/damage-smoke">
<default value="0"/>
<test logic="AND" value="1">
/fdm/jsbsim/engine/damage-level GT 100
/engines/active-engine/running EQ 1
</test>
<output>/aircraft/effects/damage-smoke-visible</output>
</switch>
</channel>
</system>