189 lines
5 KiB
XML
189 lines
5 KiB
XML
<?xml version="1.0"?>
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<!-- Airbus A320 APU -->
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<!-- Copyright (c) 2020 Jonathan Redpath -->
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<system name="A320: APU">
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<channel name="APU" execrate="8">
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<!-- bleed 1.8 kg / sec @ 42 psig -->
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<!-- fuel 148 kg/hr -->
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<!-- generator 24034 rpm, 10129 rpm fuel ctl, 32045 rpm starter, 51965 rpm cooling, 4137rpm oil pump -->
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<fcs_function name="/systems/apu/bleed-load-kw">
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<function>
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<ifthen>
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<eq>
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<property>/controls/pneumatics/switches/apu</property>
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<value>1</value>
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</eq>
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<value>252</value>
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<value>0</value>
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</ifthen>
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</function>
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</fcs_function>
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<fcs_function name="/systems/apu/electrical-load-kw">
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<function>
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<ifthen>
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<gt>
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<property>/systems/electrical/relay/apu-glc/output</property>
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<value>110</value>
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</gt>
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<value>132</value>
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<value>0</value>
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</ifthen>
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</function>
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</fcs_function>
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<fcs_function name="/systems/apu/apu-load-cmd">
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<function>
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<quotient>
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<sum>
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<property>/systems/apu/electrical-load-kw</property>
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<property>/systems/apu/bleed-load-kw</property>
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</sum>
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<value>400</value>
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</quotient>
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</function>
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</fcs_function>
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<actuator name="/systems/apu/apu-load">
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<input>/systems/apu/apu-load-cmd</input>
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<rate_limit>0.01</rate_limit> <!-- 60 seconds cooling period for bleed which is ~ 60% -->
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</actuator>
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<washout_filter name="/systems/apu/dn-dt">
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<input>/engines/engine[2]/n1</input>
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<c1>1</c1>
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</washout_filter>
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<fcs_function name="/systems/apu/egt-degC">
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<function>
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<sum>
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<product>
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<property>/systems/apu/apu-load</property>
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<value>50</value>
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</product>
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<ifthen>
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<or>
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<lt>
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<property>/engines/engine[2]/n1</property>
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<value>0.5</value>
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</lt>
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<gt>
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<property>/systems/apu/dn-dt</property>
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<value>0</value>
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</gt>
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</or>
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<table>
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<independentVar lookup="row">/engines/engine[2]/n1</independentVar>
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<tableData>
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5.0 20.0
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8.0 45.0
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10.0 120.0
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12.0 225.0
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18.0 430.0
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25.0 500.0
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27.0 560.0
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30.0 720.0
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35.0 785.0
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40.0 800.0
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45.0 795.0
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50.0 785.0
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60.0 755.0
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75.0 645.0
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90.0 520.0
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100.0 415.0
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</tableData>
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</table>
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<table>
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<independentVar lookup="row">/engines/engine[2]/n1</independentVar>
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<tableData>
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2.0 200.0
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8.0 220.0
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12.0 225.0
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18.0 240.0
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30.0 250.0
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50.0 265.0
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60.0 295.0
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75.0 380.0
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90.0 410.0
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100.0 415.0
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</tableData>
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</table>
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</ifthen>
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</sum>
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</function>
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</fcs_function>
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<fcs_function name="/systems/apu/oil/oil-pressure-psi">
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<function>
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<table>
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<independentVar lookup="row">/engines/engine[2]/n1</independentVar>
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<independentVar lookup="column">/systems/apu/oil/level-l</independentVar>
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<tableData>
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0 3.6 5.4
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8 0 0 0
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12 0 1 10
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18 0 5 22
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30 0 22 41
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50 0 25 45
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60 0 28 48
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75 0 33 52
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90 0 35 54
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100 0 36 55
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</tableData>
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</table>
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</function>
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</fcs_function>
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<fcs_function name="/systems/apu/oil/oil-temperature-degC">
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<function>
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<product>
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<sum>
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<value>1.0</value> <!-- tune -->
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<product>
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<property>/systems/apu/apu-load</property>
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<value>0.3</value>
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</product>
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</sum>
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<table>
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<independentVar lookup="row">/systems/apu/oil/oil-pressure-psi</independentVar>
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<tableData>
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0 0
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25 135
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35 105
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55 85
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</tableData>
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</table>
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<quotient>
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<property>/engines/engine[2]/n1</property>
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<value>100</value>
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</quotient>
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</product>
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</function>
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</fcs_function>
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<fcs_function name="/systems/apu/oil/calc-oil-level">
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<function>
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<sum>
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<property>/systems/apu/oil/level-l</property>
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<product>
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<quotient>
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<property>/engines/engine[2]/n1</property>
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<value>100</value>
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</quotient>
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<property>/systems/apu/oil/allow-oil-consumption</property>
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<value>-0.00000131437</value>
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<property>simulation/channel-dt</property>
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</product>
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</sum>
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</function>
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<output>/systems/apu/oil/level-l</output>
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</fcs_function>
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</channel>
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</system>
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