Fixes from Andy Ross:
+ The wing stall angle was weird, as mentioned earlier. Values greater than 45° don't have much physical meaning. I changed it to 25, which should be closer to a realistic value. + The lift="1.1" on the elevator flaps wasn't quite enough to get the aircraft into the approach AoA. I changed it to 1.2, and it works. It's still not as responsive as I'd have expected (then again, this is a big aircraft...). + The hstab effectiveness was negative. This is wrong, as this is a multiplier for all force generated by the surface. A surface with a negative value will produce thrust instead of drag. :) Maybe this was needed because the elevator was rigged backwards somewhere else? I changed it + The wing and hstab had very small stall widths (very sharp stalls). Low aspect wings should have gentle stalls, not sharp ones. I changed it to 15 as a guess. + There's no rudder input mapped. This can be done with a "split" input to the tails in exactly the same way that the aireron works on the wing. It will simply add to the elevator input. V-tail Bonanzas will require the same treatment.
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curt
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1 changed files with 30 additions and 32 deletions
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@ -19,23 +19,23 @@
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<!-- Approach configuration -->
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<!-- From GW & photos -->
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<approach speed="110" aoa="7">
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<control-setting axis="/controls/throttle[0]" value="0.05"/>
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<control-setting axis="/controls/throttle[1]" value="0.05"/>
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<control-setting axis="/controls/flaps" value="0.7"/>
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<control-setting axis="/controls/engines/engine[0]/throttle" value="0.05"/>
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<control-setting axis="/controls/engines/engine[1]/throttle" value="0.05"/>
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<control-setting axis="/controls/flight/flaps" value="0.7"/>
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<!--
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<control-setting axis="/controls/slats" value="0.3"/>
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<control-setting axis="/controls/flight/slats" value="0.3"/>
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-->
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<control-setting axis="/controls/gear-down" value="1"/>
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<control-setting axis="/controls/gear/gear-down" value="1"/>
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</approach>
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<!-- Cruise configuration -->
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<cruise speed="900" alt="35000">
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<control-setting axis="/controls/throttle[0]" value="1.0"/>
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<control-setting axis="/controls/flaps" value="0.0"/>
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<control-setting axis="/controls/engines/engine[0]/throttle" value="1.0"/>
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<control-setting axis="/controls/flight/flaps" value="0.0"/>
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<!--
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<control-setting axis="/controls/slats" value="0.0"/>
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<control-setting axis="/controls/flight/slats" value="0.0"/>
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-->
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<control-setting axis="/controls/gear-down" value="0"/>
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<control-setting axis="/controls/gear/gear-down" value="0"/>
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</cruise>
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<cockpit x="5.70" y="0.00" z="1.26"/>
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@ -63,18 +63,18 @@
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<!-- GW stall characteristics -->
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<wing x="-2.00" y="0.00" z="0.25" length="6.66" chord="12.00"
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taper="0.08" sweep="0" dihedral="0" camber="0.0">
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<stall aoa="58" width="1" peak="1.3"/>
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<stall aoa="25" width="15" peak="1.3"/>
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<flap0 start="0.36" end="0.63" lift="1.2" drag="1.4"/>
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<flap1 start="0.63" end="0.89" lift="1.1" drag="1.1"/>
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<!--
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<slat start="0.42" end="0.89" aoa="3" drag="1.1"/>
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-->
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<control-input axis="/controls/flaps" control="FLAP0"/>
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<control-input axis="/controls/aileron" control="FLAP1" split="true"/>
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<control-input axis="/controls/flight/flaps" control="FLAP0"/>
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<control-input axis="/controls/flight/aileron" control="FLAP1" split="true"/>
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<!--
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<control-input axis="/controls/slats" control="SLAT"/>
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<control-input axis="/controls/flight/slats" control="SLAT"/>
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-->
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<control-input axis="/controls/aileron-trim" control="FLAP1" split="true"/>
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<control-input axis="/controls/flight/aileron-trim" control="FLAP1" split="true"/>
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<control-output control="FLAP0" prop="/surface-positions/flap-pos-norm"/>
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<control-output control="FLAP1" side="left" prop="/surface-positions/left-aileron-pos-norm"/>
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@ -89,14 +89,12 @@
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</wing>
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<hstab x="-8.60" y="2.40" z="0.36" length="3.30" chord="5.10"
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taper="0.11" sweep="0" dihedral="40" effectiveness="-2.5">
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<stall aoa="
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22
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" width="2" peak="1.3"/>
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<flap0 start="0" end="1" lift="1.1" drag="1.2"/>
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taper="0.11" sweep="0" dihedral="40" effectiveness="2.5">
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<stall aoa="22" width="15" peak="1.3"/>
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<flap0 start="0" end="1" lift="1.2" drag="1.2"/>
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<control-input axis="/controls/elevator" control="FLAP0"/>
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<control-input axis="/controls/elevator-trim" control="FLAP0"/>
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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" side="left" prop="/surface-positions/left-elevator-pos-norm"/>
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<control-output control="FLAP0" side="right" prop="/surface-positions/right-elevator-pos-norm"/>
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@ -112,22 +110,22 @@
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thrust vectoring but I've not worked that out yet.
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-->
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<jet x="-6.26" y="1.20" z="0.60" mass="3000" thrust="24500" afterburner="35000">
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<control-input axis="/controls/throttle[0]" control="THROTTLE"/>
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<control-input axis="/controls/afterburner[0]" control="REHEAT"/>
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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]/afterburner" control="REHEAT"/>
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</jet>
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<jet x="-6.26" y="-1.20" z="0.60" mass="3000" thrust="24500" afterburner="35000">
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<control-input axis="/controls/throttle[1]" control="THROTTLE"/>
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<control-input axis="/controls/afterburner[1]" control="REHEAT"/>
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<control-input axis="/controls/engines/engine[1]/throttle" control="THROTTLE"/>
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<control-input axis="/controls/engines/engine[1]/afterburner" control="REHEAT"/>
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</jet>
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<!-- Front -->
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<gear x="5.25" y="0.00" z="-2.25" compression="0.65" spring="2.0">
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<control-input axis="/controls/rudder" control="STEER" square="true"/>
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<control-input axis="/controls/flight/rudder" control="STEER" square="true"/>
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<!--
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<control-input axis="/controls/brakes[0]" control="BRAKE"/>
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<control-input axis="/controls/gear/wheel[0]/brake" control="BRAKE"/>
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-->
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<control-input axis="/controls/gear-down" control="EXTEND"/>
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<control-input axis="/controls/gear/gear-down" control="EXTEND"/>
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<control-output control="EXTEND" prop="/gear/gear[0]/position-norm"/>
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<control-speed control="EXTEND" transition-time="4"/>
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<control-output control="STEER" prop="/gear/gear[0]/steering-norm"/>
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@ -139,7 +137,7 @@
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-->
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<gear x="-2.20" y="1.92" z="-2.25" compression="0.65" spring="1.5">
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<control-input axis="/controls/brakes[0]" control="BRAKE"/>
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<control-input axis="/controls/gear-down" control="EXTEND"/>
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<control-input axis="/controls/gear/gear-down" control="EXTEND"/>
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<control-output control="EXTEND" prop="/gear/gear[1]/position-norm"/>
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<control-speed control="EXTEND" transition-time="4"/>
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</gear>
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@ -149,15 +147,15 @@
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<gear x="-2.20" y="1.92" z="-2.7" compression="1.2" spring="1.5">
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-->
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<gear x="-2.20" y="-1.92" z="-2.25" compression="0.65" spring="1.5">
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<control-input axis="/controls/brakes[0]" control="BRAKE"/>
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<control-input axis="/controls/gear-down" control="EXTEND"/>
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<control-input axis="/controls/gear/wheel[0]/brake" control="BRAKE"/>
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<control-input axis="/controls/gear/gear-down" control="EXTEND"/>
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<control-output control="EXTEND" prop="/gear/gear[2]/position-norm"/>
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<control-speed control="EXTEND" transition-time="4"/>
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</gear>
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<!-- Canopy -->
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<gear x="4.1" y="0.0" z="1.05" retract-time="7" compression="0.6">
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<control-input axis="/controls/parking-brake" control="EXTEND"/>
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<control-input axis="/controls/gear/parking-brake" control="EXTEND"/>
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<control-speed control="EXTEND" transition-time="10"/>
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<control-output control="EXTEND" prop="/canopy/position-norm"/>
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</gear>
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