140 lines
3.4 KiB
XML
140 lines
3.4 KiB
XML
<?xml version="1.0"?>
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<!-- Angle of Attack indexer, as used on US Navy carrier aircraft. The
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operation of these things is simple. When the AoA is too low, the
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bottom arrow glows red. This indicates to the pilot that they
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should pull back on the stick to raise the nose and slow down.
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When the AoA is too high, the pilot gets a green, downward
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pointing top arrow telling him to push the stick forward, lower
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the nose, and speed up.
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This instrument needs its angle thresholds supplied externally
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(probably from the aircraft -set file), in these four properties:
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/sim/aoa-indexer/too-slow-deg (usually target +1.5 deg)
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/sim/aoa-indexer/slow-deg (target +0.5 deg)
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/sim/aoa-indexer/fast-deg (target -0.5 deg)
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/sim/aoa-indexer/too-fast-deg (target -1.5 deg)
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Note that there is no instrument background texture. This just
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applies alpha-blended "lights" to something else in the 3D
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cockpit.
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-->
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<PropertyList>
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<name>Angle of Attack Indexer</name>
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<w-base>2.0</w-base>
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<h-base>5.0</h-base>
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<layers>
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<layer>
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<name>too slow</name>
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<w>2</w>
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<h>5</h>
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<texture>
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<path>Aircraft/Instruments/Textures/aoa-indexer.rgb</path>
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<x1>0.0</x1>
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<y1>0.0</y1>
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<x2>0.2</x2>
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<y2>1.0</y2>
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</texture>
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<condition>
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<greater-than>
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<property>/velocities/alpha-deg</property>
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<property>/sim/aoa-indexer/too-slow-deg</property>
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</greater-than>
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</condition>
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</layer>
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<layer>
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<name>slow</name>
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<w>2</w>
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<h>5</h>
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<texture>
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<path>Aircraft/Instruments/Textures/aoa-indexer.rgb</path>
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<x1>0.2</x1>
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<y1>0.0</y1>
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<x2>0.4</x2>
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<y2>1.0</y2>
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</texture>
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<condition>
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<less-than>
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<property>/velocities/alpha-deg</property>
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<property>/sim/aoa-indexer/too-slow-deg</property>
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</less-than>
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<greater-than>
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<property>/velocities/alpha-deg</property>
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<property>/sim/aoa-indexer/slow-deg</property>
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</greater-than>
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</condition>
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</layer>
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<layer>
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<name>on-speed</name>
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<w>2</w>
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<h>5</h>
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<texture>
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<path>Aircraft/Instruments/Textures/aoa-indexer.rgb</path>
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<x1>0.4</x1>
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<y1>0.0</y1>
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<x2>0.6</x2>
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<y2>1.0</y2>
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</texture>
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<condition>
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<less-than>
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<property>/velocities/alpha-deg</property>
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<property>/sim/aoa-indexer/slow-deg</property>
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</less-than>
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<greater-than>
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<property>/velocities/alpha-deg</property>
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<property>/sim/aoa-indexer/fast-deg</property>
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</greater-than>
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</condition>
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</layer>
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<layer>
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<name>fast</name>
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<w>2</w>
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<h>5</h>
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<texture>
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<path>Aircraft/Instruments/Textures/aoa-indexer.rgb</path>
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<x1>0.6</x1>
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<y1>0.0</y1>
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<x2>0.8</x2>
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<y2>1.0</y2>
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</texture>
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<condition>
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<less-than>
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<property>/velocities/alpha-deg</property>
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<property>/sim/aoa-indexer/fast-deg</property>
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</less-than>
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<greater-than>
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<property>/velocities/alpha-deg</property>
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<property>/sim/aoa-indexer/too-fast-deg</property>
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</greater-than>
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</condition>
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</layer>
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<layer>
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<name>too fast</name>
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<w>2</w>
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<h>5</h>
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<texture>
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<path>Aircraft/Instruments/Textures/aoa-indexer.rgb</path>
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<x1>0.8</x1>
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<y1>0.0</y1>
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<x2>1.0</x2>
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<y2>1.0</y2>
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</texture>
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<condition>
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<less-than>
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<property>/velocities/alpha-deg</property>
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<property>/sim/aoa-indexer/too-fast-deg</property>
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</less-than>
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</condition>
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</layer>
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</layers>
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</PropertyList>
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