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129 lines
5.2 KiB
129 lines
5.2 KiB
<?xml version="1.0"?> |
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<!-- |
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************************************************************************ |
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YASim aerodynamic model for a Rascal 110 (R/C airplane by Sig Mfg.) |
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Started December 19, 2005 by Curtis Olson. |
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This aerodynamic model is based on three-views, self captured |
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performance data, and few guesses. These sites provided particularly |
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useful information or were simply fun to visit: |
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The reference datum for measurements is the tip of the nose. |
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************************************************************************ |
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--> |
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<!-- 12 lb aircraft weight includes engine, but not fuel (empty weight) --> |
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<airplane mass="12"> |
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<!-- Approach configuration --> |
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<approach speed="15" aoa="4"> |
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<control-setting axis="/controls/engines/engine[0]/throttle" value="0.10"/> |
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</approach> |
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<!-- Cruise configuration --> |
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<cruise speed="65" alt="1000"> |
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<control-setting axis="/controls/engines/engine[0]/throttle" value="1.00"/> |
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<control-setting axis="/controls/engines/engine[0]/mixture" value="1.00"/> |
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<control-setting axis="/controls/flight/elevator-trim" value="0.4"/> |
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</cruise> |
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<!-- pilot's eyepoint --> |
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<cockpit x="-0.48" y="0" z="0.30"/> |
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<fuselage ax="0.00" ay="0.00" az="-0.05" bx="-1.93" by="0.00" bz="-0.05" |
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width="0.30" taper="0.47" midpoint="0.58"/> |
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<!-- |
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The Rascal has an eliptical wing, but we'll model it as a straight |
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tapered wing with the equivalent wing area. |
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Note that the dihedral is exaggerated to simulate hull-interference effects |
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on a high-wing aircraft; once YASim models that properly, the |
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angle should be reduced to something like 2 degrees. |
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Note that the Rascal has no flaps. With a stall speed of 10kt, who |
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needs them? |
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--> |
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<wing x="-0.66" y="0.07" z="0.11" taper="0.73" incidence="0" twist="-3" |
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length="1.33" chord="0.41" sweep="0" dihedral="5" camber="0.0"> |
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<stall aoa="15" width="4" peak="1.5"/> |
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<flap0 start=".40" end="0.95" lift="1.1" drag="1.2"/> |
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<control-input axis="/controls/flight/aileron" control="FLAP0" split="true"/> |
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<control-input axis="/controls/flight/aileron-trim" control="FLAP0" split="true"/> |
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<control-output control="FLAP0" side="left" |
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prop="/surface-positions/left-aileron-pos-norm"/> |
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<control-output control="FLAP0" side="right" |
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prop="/surface-positions/right-aileron-pos-norm"/> |
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</wing> |
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<hstab x="-1.80" y="0.03" z="0.00" taper="0.6" effectiveness="1.0" |
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length="0.43" chord="0.18" sweep="0" incidence="0.00"> |
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<stall aoa="16" width="4" peak="1.5"/> |
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<flap0 start="0" end="1" lift="1.3" drag="1.2"/> |
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<control-input axis="/controls/flight/elevator" control="FLAP0"/> |
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<control-input axis="/controls/flight/elevator-trim" control="FLAP0"/> |
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<control-output control="FLAP0" prop="/surface-positions/elevator-pos-norm"/> |
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</hstab> |
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<!-- rudder has to be able to counteract aileron drag --> |
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<vstab x="-1.80" y="0.00" z="0.00" taper="0.38" effectiveness="1.0" |
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length="0.37" chord="0.33" sweep="0" incidence="0.00"> |
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<stall aoa="16" width="4" peak="1.5"/> |
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<flap0 start="0" end="1" lift="2.0" drag="1.2"/> |
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<control-input axis="/controls/flight/rudder" control="FLAP0" invert="true"/> |
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<control-input axis="/controls/flight/rudder-trim" control="FLAP0" invert="true"/> |
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<control-output control="FLAP0" prop="/surface-positions/rudder-pos-norm" |
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min="1" max="-1"/> |
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</vstab> |
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<!-- motor is reported to do 2.4 bhp but this way over powers the aircraft --> |
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<propeller radius="0.23" |
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x="-0.10" y="0.00" z="0.00" |
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mass="3.5" moment="0.001" |
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cruise-speed="60" cruise-rpm="7500" |
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cruise-alt="2000" cruise-power="0.6" |
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takeoff-power="0.6" takeoff-rpm="7000"> |
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<piston-engine eng-power="0.6" eng-rpm="7000" |
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displacement="1.60"/> |
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<actionpt x="0.00" y="0.00" z="0.00"/> |
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<control-input axis="/controls/engines/engine[0]/throttle" control="THROTTLE"/> |
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<control-input axis="/controls/engines/engine[0]/starter" control="STARTER"/> |
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<control-input axis="/controls/engines/engine[0]/magnetos" control="MAGNETOS"/> |
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<control-input axis="/controls/engines/engine[0]/mixture" control="MIXTURE"/> |
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</propeller> |
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<gear x="-1.93" y="0.00" z="-0.13" compression="0.01"> |
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<control-input axis="/controls/flight/rudder" control="STEER" |
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src0="-1.0" src1="1.0" |
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dst0="0.5" dst1="-0.5"/> |
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</gear> |
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<gear x="-0.48" y="0.27" z="-0.39" compression="0.03"> <!-- left main --> |
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<control-input axis="/controls/gear/brake-left" control="BRAKE" split="true"/> |
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<control-input axis="/controls/gear/brake-parking" control="BRAKE" split="true"/> |
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</gear> |
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<gear x="-0.48" y="-0.27" z="-0.39" compression="0.03"> <!-- right main --> |
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<control-input axis="/controls/gear/brake-right" control="BRAKE" split="true"/> |
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<control-input axis="/controls/gear/brake-parking" control="BRAKE" split="true"/> |
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</gear> |
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<!-- There's just one 20 oz tank, right behind the engine (!!!) --> |
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<tank x="-0.23" y="0.0" z="-0.08" capacity="1.00"/> |
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<!-- |
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Note the tandem seating; the x values (arms) come from the |
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weight-and-balance page cited at the start. |
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--> |
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<ballast x="0.0" y="00" z="0.0" mass="1.2"/> |
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<!-- pilot --> |
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<!-- <weight x="-0.91" y="0" z="-0.70" --> |
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<!-- mass-prop="/yasim/j3cub/pilot-lb"/> --> |
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<!-- passenger --> |
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<!-- <weight x="-0.23" y="0" z="-0.70" --> |
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<!-- mass-prop="/yasim/j3cub/passenger-lb"/> --> |
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</airplane>
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