Lee Elliott:

Here's a quick update to the yf23 fdm and auto-pilot settings.  It flies and
takes-off reasonably well - still haven't tried landing it yet;)  It can
still be a bit wobbly at times though and It's not very good at terrain
following either.

Taking off on auto-pilot is quite fun.  Set full flaps and CTRL-a (assuming
you're near sea level), hit F6 to make it go straight and apply power - about
50% until it rotates then apply full power.  Retract the gear as soon as it
gets off the ground and by the time you#ve done that, retract the flaps.
Quite entertaining from a tower view:)

It's not really an ideal a/c to model but apart from the aesthetics, which
appeal to me, I was curious about not having a rudder.

There's a new texture sheet too but it only makes the a/c a paler shade of
grey.

Aircraft-yasim/yf23-yasim.xml

@@ -15,8 +15,8 @@
 <!-- Approach configuration -->
 <!-- From GW & photos -->
  <approach speed="130" aoa="5">
-  <control-setting axis="/controls/engines/engine[0]/throttle" value="0.05"/>
+  <control-setting axis="/controls/engines/engine[0]/throttle" value="0.15"/>
-  <control-setting axis="/controls/engines/engine[1]/throttle" value="0.05"/>
+  <control-setting axis="/controls/engines/engine[1]/throttle" value="0.15"/>
   <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"/>
@@ -70,7 +70,7 @@
 -->
  <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"/>
+  <stall aoa="35" 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"/>
@@ -94,7 +94,7 @@
  <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"/>
+  <flap0 start="0" end="1" lift="1.4" drag="1.5"/>
 
   <control-input axis="/controls/flight/elevator" control="FLAP0"/>
   <control-input axis="/controls/flight/elevator-trim" control="FLAP0"/>

Aircraft/yf23-yasim-set.xml

@@ -26,7 +26,7 @@ NR/MD YF23 simulation config.
   </panel_2>
 
   <hud>
-   <path>Huds/Default/default-LE.xml</path>
+   <path>Huds/Default/default.xml</path>
    <visibility>true</visibility>
   </hud>
 
@@ -43,7 +43,7 @@ NR/MD YF23 simulation config.
 
   <view n="1">
    <config>
-     <z-offset-m type="double" archive="y">-40.0</z-offset-m>
+     <z-offset-m type="double" archive="y">-35.0</z-offset-m>
    </config>
 
   </view>
@@ -70,15 +70,15 @@ 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">120.0</elevator-adj-factor>
+     <elevator-adj-factor type="float">130.0</elevator-adj-factor>
 
      <integral-contribution type="float">0.005</integral-contribution>
 
      <max-aileron type="float">0.5</max-aileron>
      <max-roll-deg type="float">60.0</max-roll-deg>
 
-     <roll-out-deg type="float">6.0</roll-out-deg>
+     <roll-out-deg type="float">10.0</roll-out-deg>
-     <roll-out-smooth-deg type="float">30.0</roll-out-smooth-deg>
+     <roll-out-smooth-deg type="float">20.0</roll-out-smooth-deg>
 
      <zero-pitch-throttle type="float">0.5</zero-pitch-throttle>
      <zero-pitch-trim-full-throttle type="float">0.001</zero-pitch-trim-full-throttle>