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Rascal110-YASim.xml
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Rascal110-YASim.xml
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<?xml version="1.0"?>
<!--
************************************************************************
YASim aerodynamic model for a Rascal 110 (R/C airplane by Sig Mfg.)
Started December 19, 2005 by Curtis Olson.
This aerodynamic model is based on three-views, self captured
performance data, and few guesses. These sites provided particularly
useful information or were simply fun to visit:
http://gallinazo.flightgear.org/uas/rascal-1/sig-rascal-110-1-construction/
The reference datum for measurements is the tip of the nose.
************************************************************************
-->
<!-- 12 lb aircraft weight includes engine, but not fuel (empty weight) -->
<airplane version="2018.1" mass-kg="5.4" mtow-kg="25">
<!-- Approach configuration -->
<approach speed="18" aoa="4">
<control-setting axis="/controls/engines/engine[0]/throttle" value="0.10"/>
</approach>
<!-- Cruise configuration -->
<cruise speed="30" alt="1000">
<control-setting axis="/controls/engines/engine[0]/throttle" value="1.00"/>
<control-setting axis="/controls/engines/engine[0]/mixture" value="1.00"/>
<control-setting axis="/controls/flight/elevator-trim" value="0.4"/>
</cruise>
<!-- pilot's eyepoint -->
<cockpit x="-0.48" y="0" z="0.30"/>
<fuselage ax="0.00" ay="0.00" az="-0.05" bx="-1.93" by="0.00" bz="-0.05"
width="0.30" taper="0.47" midpoint="0.58"/>
<!--
The Rascal has an eliptical wing, but we'll model it as a straight
tapered wing with the equivalent wing area.
Note that the dihedral is exaggerated to simulate hull-interference effects
on a high-wing aircraft; once YASim models that properly, the
angle should be reduced to something like 2 degrees.
Note that the Rascal has no flaps. With a stall speed of 10kt, who
needs them?
-->
<wing x="-0.66" y="0.07" z="0.11" taper="0.73" incidence="0" twist="-3"
length="1.33" chord="0.41" sweep="0" dihedral="5" camber="0.0">
<stall aoa="15" width="4" peak="1.5"/>
<flap0 start="0.40" end="0.95" lift="1.1" drag="1.2"/>
<control-input axis="/controls/flight/aileron" control="FLAP0" split="true"/>
<control-input axis="/controls/flight/aileron-trim" control="FLAP0" split="true"/>
<control-output control="FLAP0" side="left" prop="/surface-positions/left-aileron-pos-norm"/>
<control-output control="FLAP0" side="right" prop="/surface-positions/right-aileron-pos-norm"/>
</wing>
<hstab x="-1.80" y="0.03" z="0.00" taper="0.6" effectiveness="1.0"
length="0.43" chord="0.18" sweep="0" incidence="0.00">
<stall aoa="16" width="4" peak="1.5"/>
<flap0 start="0" end="1" lift="1.3" drag="1.2"/>
<control-input axis="/controls/flight/elevator" control="FLAP0"/>
<control-input axis="/controls/flight/elevator-trim" control="FLAP0"/>
<control-output control="FLAP0" prop="/surface-positions/elevator-pos-norm"/>
</hstab>
<!--
-->
<!-- rudder has to be able to counteract aileron drag -->
<vstab x="-1.80" y="0.00" z="0.00" taper="0.38" effectiveness="1.0"
length="0.37" chord="0.33" sweep="0" incidence="0.00">
<stall aoa="16" width="4" peak="1.5"/>
<flap0 start="0" end="1" lift="2.0" drag="1.2"/>
<control-input axis="/controls/flight/rudder" control="FLAP0" invert="true"/>
<control-input axis="/controls/flight/rudder-trim" control="FLAP0" invert="true"/>
<control-output control="FLAP0" prop="/surface-positions/rudder-pos-norm"
min="1" max="-1"/>
</vstab>
<!-- motor is reported to do 2.4 bhp but this way over powers the aircraft -->
<propeller radius="0.23"
x="-0.10" y="0.00" z="0.00"
mass="3.5" moment="0.001"
cruise-speed="30" cruise-rpm="7000"
cruise-alt="2000" cruise-power="1.3"
takeoff-power="1.5" takeoff-rpm="8000"
contra="0">
<piston-engine eng-power="1.8" eng-rpm="8500" displacement="1.60" min-throttle="0.05"/>
<actionpt x="0.00" y="0.00" z="0.00"/>
<control-input axis="/controls/engines/engine[0]/throttle" control="THROTTLE"/>
<control-input axis="/controls/engines/engine[0]/starter" control="STARTER"/>
<control-input axis="/controls/engines/engine[0]/magnetos" control="MAGNETOS"/>
<control-input axis="/controls/engines/engine[0]/mixture" control="MIXTURE"/>
</propeller>
<!-- tail gear -->
<gear x="-1.93" y="0.00" z="-0.13"
sfric="1.6"
dfric="1.3"
compression="0.01"
>
<control-input axis="/controls/flight/rudder" control="STEER"
src0="-1.0" src1="1.0"
dst0="0.5" dst1="-0.5"/>
</gear>
<!-- left main -->
<gear x="-0.48" y="0.27" z="-0.39"
sfric="1.2"
dfric="1.1"
compression="0.03"
>
<control-input axis="/controls/gear/brake-left" control="BRAKE" split="true"/>
<control-input axis="/controls/gear/brake-parking" control="BRAKE" split="true"/>
</gear>
<!-- right main -->
<gear x="-0.48" y="-0.27" z="-0.39"
sfric="1.2"
dfric="1.1"
compression="0.03"
>
<control-input axis="/controls/gear/brake-right" control="BRAKE" split="true"/>
<control-input axis="/controls/gear/brake-parking" control="BRAKE" split="true"/>
</gear>
<!-- There's just one 20 oz tank, right behind the engine (!!!) -->
<tank x="-0.23" y="0.0" z="-0.08" capacity="1.00"/>
<!--
<ballast x="0.0" y="00" z="0.0" mass="1.2"/>
-->
</airplane>