137 lines
5.7 KiB
XML
137 lines
5.7 KiB
XML
<?xml version="1.0"?>
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<!--
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***********************************************************************************
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c172p, June 2015
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Fuel system for 2 different engines at choice, JSBSim FDM
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***********************************************************************************
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-->
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<system name="fuel">
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<!-- *********************************************************************************** -->
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<!-- Main tanks: 0 and 1 -->
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<!-- Collector Tanks: 2 and 3, constant-level intermediate float chambers -->
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<!-- Collector Tank 2: engine 0, Collector Tank 3: engine 1 -->
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<!-- Fuel Flow Rates in pounds per second -->
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<!-- *********************************************************************************** -->
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<channel name="Float Chamber Selection">
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<!-- Give tank[2] priority if 160 HP engine is used -->
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<switch>
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<output>propulsion/tank[2]/priority</output>
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<default value="0"/>
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<test logic="AND" value="1">
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/controls/engines/active-engine EQ 0
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/engines/active-engine/killed EQ 0
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</test>
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</switch>
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<!-- Give tank[3] priority if 180 HP engine is used -->
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<switch>
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<output>propulsion/tank[3]/priority</output>
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<default value="0"/>
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<test logic="AND" value="1">
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/controls/engines/active-engine EQ 1
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/engines/active-engine/killed EQ 0
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</test>
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</switch>
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</channel>
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<!-- ****************************************************** -->
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<!-- Collector Tank 2 level-maintenance -->
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<!-- ****************************************************** -->
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<channel name="To Tank2">
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<!-- from Tank 0 (to Collector Tank 2) -->
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<switch name="fuel/from-tank0-to-tank2">
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<default value="0"/>
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<test logic="AND" value="0.1">
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propulsion/tank[0]/priority EQ 1
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propulsion/tank[0]/contents-lbs GT 0
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/consumables/fuel/tank[2]/level-lbs LT 0.05
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propulsion/tank[2]/priority EQ 1
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accelerations/Nz GE 0
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</test>
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</switch>
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<!-- from Tank 1 (to Collector Tank 2) -->
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<switch name="fuel/from-tank1-to-tank2">
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<default value="0"/>
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<test logic="AND" value="0.1">
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propulsion/tank[1]/priority EQ 1
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propulsion/tank[1]/contents-lbs GT 0
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/consumables/fuel/tank[2]/level-lbs LT 0.05
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propulsion/tank[2]/priority EQ 1
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accelerations/Nz GE 0
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</test>
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</switch>
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</channel>
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<!-- Total from Tank 0 and Tank 1 to Collector Tank 2 -->
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<channel name="Total flow rate into tank 2">
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<summer name="tank0 and 1 to tank2">
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<input>fuel/from-tank0-to-tank2</input>
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<input>fuel/from-tank1-to-tank2</input>
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<output>propulsion/tank[2]/external-flow-rate-pps</output>
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</summer>
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</channel>
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<!-- ****************************************************** -->
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<!-- Collector Tank 3 level maintenance -->
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<!-- ****************************************************** -->
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<channel name="To Tank3">
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<!-- from Tank 0 (to Collector Tank 3) -->
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<switch name="fuel/from-tank0-to-tank3">
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<default value="0"/>
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<test logic="AND" value="0.1">
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propulsion/tank[0]/priority EQ 1
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propulsion/tank[0]/contents-lbs GT 0
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/consumables/fuel/tank[3]/level-lbs LT 0.05
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propulsion/tank[3]/priority EQ 1
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accelerations/Nz GE 0
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</test>
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</switch>
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<!-- from Tank 1 (to Collector Tank 3) Fuel Flow Rate in pps -->
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<switch name="fuel/from-tank1-to-tank3">
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<default value="0"/>
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<test logic="AND" value="0.1">
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propulsion/tank[1]/priority EQ 1
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propulsion/tank[1]/contents-lbs GT 0
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/consumables/fuel/tank[3]/level-lbs LT 0.05
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propulsion/tank[3]/priority EQ 1
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accelerations/Nz GE 0
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</test>
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</switch>
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</channel>
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<!-- Total from Tank 0 and Tank 1 to Collector Tank 3 -->
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<channel name="Total flow rate into tank 3">
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<summer name="tank0 and 1 to tank3">
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<input>fuel/from-tank0-to-tank3</input>
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<input>fuel/from-tank1-to-tank3</input>
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<output>propulsion/tank[3]/external-flow-rate-pps</output>
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</summer>
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</channel>
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<!-- *********************************************************************************** -->
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<!-- FLOW RATE from each MAIN TANK (consumption) -->
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<!-- *********************************************************************************** -->
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<channel name="Total flow rates">
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<summer name="fuel/tank0-flow-rate">
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<input>-fuel/from-tank0-to-tank2</input>
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<input>-fuel/from-tank0-to-tank3</input>
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<output>propulsion/tank[0]/external-flow-rate-pps</output>
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</summer>
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<summer name="fuel/tank1-flow-rate">
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<input>-fuel/from-tank1-to-tank2</input>
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<input>-fuel/from-tank1-to-tank3</input>
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<output>propulsion/tank[1]/external-flow-rate-pps</output>
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</summer>
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</channel>
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</system>
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