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Lee Elliott:

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I've attached an update for the yf23 and I think I've included all the right
files - the model is unchanged (I think I'll eventually paint it in an
imaginary NASA scheme, perhaps a bit like the HIDEC F-15, until I can get
some newer pictures and see what they've done with it) so I've not included
it again.

The fdm still needs quite a bit of work - it can be a bit twitchy and wobbly
at times, and the auto-pilot roll-out and smooth need tightening up, but it's
flyable.  Haven't tried landing it yet though;)
This commit is contained in:
curt 2003-05-28 15:09:30 +00:00
parent 4534c3c8d3
commit 323fce18f7
2 changed files with 56 additions and 80 deletions
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132
Aircraft-yasim/yf23-yasim.xml
View file

@ -2,39 +2,36 @@
couldn't find much 'hard' information so a lot of this fdm is
guess work (GW).
-->
<!-- Max take off weight is 64000lb so I'm allocating 4xAIM-9,
4x AIM-120, pilot and fuel and adding them as ballast entries
until I sort out correct weight entries.
<!-- Max take off wieght is 64000lb but I imagine that this
includes some weapons so I'm allocating 8000lb to his and
subtracting it from the max wieght.
GW figures for these are
Aim-9 200lb x 4 = 8000lb
AIM-120 400lb x 4 = 16000lb
Pilot 200lb x 1 = 200lb
Fuel 24000lb x 1 = 24000lb (from a web-site)
I got a figure of 24000lb for the fuel load from a web site.
this seems rather high to me but until I can get a better
figure it'll have to do.
-->
<airplane mass="40000">
<airplane mass="32000">
<!-- Approach configuration -->
<!-- From GW & photos -->
<approach speed="110" aoa="7">
<approach speed="130" aoa="5">
<control-setting axis="/controls/engines/engine[0]/throttle" value="0.05"/>
<control-setting axis="/controls/engines/engine[1]/throttle" value="0.05"/>
<control-setting axis="/controls/flight/flaps" value="0.7"/>
<!--
<control-setting axis="/controls/flight/slats" value="0.3"/>
-->
<control-setting axis="/controls/engines/engine[0]/afterburner" value="0"/>
<control-setting axis="/controls/engines/engine[1]/afterburner" value="0"/>
<control-setting axis="/controls/flight/flaps" value="1"/>
<control-setting axis="/controls/flight/slats" value="0"/>
<control-setting axis="/controls/gear/gear-down" value="1"/>
</approach>
<!-- Cruise configuration -->
<cruise speed="900" alt="35000">
<control-setting axis="/controls/engines/engine[0]/throttle" value="1.0"/>
<cruise speed="900" alt="45000">
<control-setting axis="/controls/engines/engine[0]/throttle" value="1"/>
<control-setting axis="/controls/engines/engine[1]/throttle" value="1"/>
<control-setting axis="/controls/engines/engine[0]/afterburner" value="0"/>
<control-setting axis="/controls/engines/engine[1]/afterburner" value="0"/>
<control-setting axis="/controls/flight/flaps" value="0.0"/>
<!--
<control-setting axis="/controls/flight/slats" value="0.0"/>
-->
<control-setting axis="/controls/flight/slats" value="0"/>
<control-setting axis="/controls/gear/gear-down" value="0"/>
</cruise>
@ -45,60 +42,64 @@
these three fuselage/housings, and the elevator. For
this reason I've started the wings from the center-line.
-->
<!-- Fuselage proper -->
<!-- Fuselage -->
<fuselage ax="10.00" ay="0.00" az="0.00"
bx="-2.00" by="0.00" bz="0.00"
width="1.6" taper="0.1" midpoint="0.3"/>
width="1.6" taper="0.5" midpoint="0.5"/>
<!-- Left engine housing -->
<!-- Left engine housing (Excl intakes) -->
<fuselage ax="-2.00" ay="1.80" az="0.00"
bx="-8.00" by="1.20" bz="0.60"
width="1.2" taper="0.1" midpoint="0.3"/>
width="1.2" taper="0" midpoint="0.3"/>
<!-- Right engine housing -->
<!-- Right engine housing (Excl intakes) -->
<fuselage ax="-2.00" ay="-1.80" az="0.00"
bx="-8.00" by="-1.20" bz="0.60"
width="1.2" taper="0.1" midpoint="0.3"/>
width="1.2" taper="0" midpoint="0.3"/>
<!-- GW stall characteristics -->
<wing x="-2.00" y="0.00" z="0.25" length="6.66" chord="12.00"
taper="0.08" sweep="0" dihedral="0" camber="0.0">
<stall aoa="25" width="15" peak="1.3"/>
<flap0 start="0.36" end="0.63" lift="1.2" drag="1.4"/>
<flap1 start="0.63" end="0.89" lift="1.1" drag="1.1"/>
<!--
<wing x="-2.00" y="0.00" z="0.25" length="6.66" chord="12.00"
taper="0.08" sweep="0" dihedral="0" camber="0" incidence="-0.4">
<stall aoa="35" width="3" peak="1.3"/>
<flap0 start="0.36" end="0.63" lift="1.1" drag="1.8"/>
<flap1 start="0.63" end="0.89" lift="1.1" drag="1.3"/>
<slat start="0.42" end="0.89" aoa="3" drag="1.1"/>
-->
<wing x="-2.00" y="2.40" z="0.25" length="4.2" chord="8.1"
taper="0.19" sweep="0" dihedral="0" camber="0.0" incidence="0.0">
<stall aoa="41" width="3" peak="1.3"/>
<flap0 start="0.0" end="0.42" lift="1.5" drag="1.5"/>
<flap1 start="0.42" end="0.833" lift="1.1" drag="1.3"/>
<slat start="0.14" end="0.833" aoa="3" drag="1.1"/>
<control-input axis="/controls/flight/flaps" control="FLAP0"/>
<control-input axis="/controls/flight/aileron" control="FLAP1" split="true"/>
<!--
<control-input axis="/controls/flight/slats" control="SLAT"/>
-->
<control-input axis="/controls/flight/aileron-trim" control="FLAP1" split="true"/>
<control-input axis="/controls/flight/slats" control="SLAT"/>
<control-output control="FLAP0" prop="/surface-positions/flap-pos-norm"/>
<control-output control="FLAP1" side="left" prop="/surface-positions/left-aileron-pos-norm"/>
<control-output control="FLAP1" side="right" prop="/surface-positions/right-aileron-pos-norm"/>
<!--
<control-output control="SLAT" side="left" prop="/surface-positions/left-slat-pos-norm"/>
<control-output control="SLAT" side="right" prop="/surface-positions/right-slat-pos-norm"/>
-->
<control-speed control="FLAP0" transition-time="10"/>
<control-output control="FLAP1" side="left"
prop="/surface-positions/left-aileron-pos-norm"/>
<control-output control="FLAP1" side="right"
prop="/surface-positions/right-aileron-pos-norm"/>
<control-speed control="FLAP0" transition-time="2"/>
<control-speed control="FLAP1" transition-time="0.5"/>
<control-output control="SLAT" prop="/surface-positions/slat-pos-norm"/>
</wing>
<hstab x="-8.60" y="2.40" z="0.36" length="3.30" chord="5.10"
taper="0.11" sweep="0" dihedral="40" effectiveness="2.5">
<stall aoa="22" width="15" peak="1.3"/>
<flap0 start="0" end="1" lift="1.2" drag="1.2"/>
<hstab x="-8.70" y="2.40" z="0.36" length="3.30" chord="5.10"
taper="0.11" sweep="0" dihedral="40" camber="0.0" effectiveness="1">
<stall aoa="24" width="7" peak="1.3"/>
<flap0 start="0" end="1" lift="1.6" drag="1.4"/>
<control-input axis="/controls/flight/elevator" control="FLAP0"/>
<control-input axis="/controls/flight/elevator-trim" control="FLAP0"/>
<control-output control="FLAP0" side="left" prop="/surface-positions/left-elevator-pos-norm"/>
<control-output control="FLAP0" side="right" prop="/surface-positions/right-elevator-pos-norm"/>
<control-output control="FLAP0" prop="/surface-positions/elevator-pos-norm"/>
<control-speed control="FLAP0" transition-time="0.5"/>
</hstab>
@ -122,32 +123,23 @@
<!-- Front -->
<gear x="5.25" y="0.00" z="-2.25" compression="0.65" spring="2.0">
<control-input axis="/controls/flight/rudder" control="STEER" square="true"/>
<!--
<control-input axis="/controls/gear/wheel[0]/brake" control="BRAKE"/>
-->
<control-input axis="/controls/gear/gear-down" control="EXTEND"/>
<control-output control="EXTEND" prop="/gear/gear[0]/position-norm"/>
<control-speed control="EXTEND" transition-time="4"/>
<control-output control="STEER" prop="/gear/gear[0]/steering-norm"/>
<control-speed control="EXTEND" transition-time="4"/>
</gear>
<!-- Left main -->
<!--
<gear x="-2.20" y="1.92" z="-2.7" compression="1.2" spring="1.5">
-->
<gear x="-2.20" y="1.92" z="-2.25" compression="0.65" spring="1.5">
<control-input axis="/controls/brakes[0]" control="BRAKE"/>
<control-input axis="/controls/gear/wheel[0]/brake" control="BRAKE"/>
<control-input axis="/controls/gear/gear-down" control="EXTEND"/>
<control-output control="EXTEND" prop="/gear/gear[1]/position-norm"/>
<control-speed control="EXTEND" transition-time="4"/>
</gear>
<!-- Right main -->
<!--
<gear x="-2.20" y="1.92" z="-2.7" compression="1.2" spring="1.5">
-->
<gear x="-2.20" y="-1.92" z="-2.25" compression="0.65" spring="1.5">
<control-input axis="/controls/gear/wheel[0]/brake" control="BRAKE"/>
<gear x="-2.20" y="-1.92" z="-2.7" compression="1.2" spring="1.5">
<control-input axis="/controls/gear/wheel[1]/brake" control="BRAKE"/>
<control-input axis="/controls/gear/gear-down" control="EXTEND"/>
<control-output control="EXTEND" prop="/gear/gear[2]/position-norm"/>
<control-speed control="EXTEND" transition-time="4"/>
@ -177,22 +169,6 @@
<!-- Pilot -->
<ballast x="5.8" y="0" z="0.6" mass="200"/>
<!-- AIM-9 x 2 Left -->
<ballast x="-0.85" y="2.40" z="-0.23" mass="200"/>
<ballast x="-0.85" y="2.24" z="-0.46" mass="200"/>
<!-- AIM-9 x 2 Right -->
<ballast x="-0.85" y="-2.40" z="-0.23" mass="200"/>
<ballast x="-0.85" y="-2.24" z="-0.46" mass="200"/>
<!-- AIM-120 x 2 Left -->
<ballast x="-1.2" y="2.02" z="-0.52" mass="400"/>
<ballast x="-1.2" y="1.74" z="-0.52" mass="400"/>
<!-- AIM-120 x 2 Left -->
<ballast x="-1.2" y="-2.02" z="-0.52" mass="400"/>
<ballast x="-1.2" y="-1.74" z="-0.52" mass="400"/>
<!-- Trim ballast -->
<ballast x="6" y="0" z="0.0" mass="1000"/>

4
Aircraft/yf23-yasim-set.xml
View file

@ -70,12 +70,12 @@ NR/MD YF23 simulation config.
<target-climb-rate-fpm type="float">20000.0</target-climb-rate-fpm>
<target-descent-rate-fpm type="float">12000.0</target-descent-rate-fpm>
<elevator-adj-factor type="float">115.0</elevator-adj-factor>
<elevator-adj-factor type="float">120.0</elevator-adj-factor>
<integral-contribution type="float">0.005</integral-contribution>
<max-aileron type="float">0.5</max-aileron>
<max-roll-deg type="float">70.0</max-roll-deg>
<max-roll-deg type="float">60.0</max-roll-deg>
<roll-out-deg type="float">6.0</roll-out-deg>
<roll-out-smooth-deg type="float">30.0</roll-out-smooth-deg>