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fgdata/Aircraft-yasim/yf23-yasim.xml

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Initial revision.
2003-04-21 14:18:07 +00:00
<!-- There weren't many YF23s - just the two prototypes - and I
couldn't find much 'hard' information so a lot of this fdm is
guess work (GW).
-->
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<!-- 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.
Initial revision.
2003-04-21 14:18:07 +00:00
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
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.
Initial revision.
2003-04-21 14:18:07 +00:00
-->
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<airplane mass="32000">
Initial revision.
2003-04-21 14:18:07 +00:00
<!-- Approach configuration -->
<!-- From GW & photos -->
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<approach speed="130" aoa="5">
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.
2003-05-28 15:11:22 +00:00
<control-setting axis="/controls/engines/engine[0]/throttle" value="0.15"/>
<control-setting axis="/controls/engines/engine[1]/throttle" value="0.15"/>
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<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"/>
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.
2003-04-21 17:39:39 +00:00
<control-setting axis="/controls/gear/gear-down" value="1"/>
Initial revision.
2003-04-21 14:18:07 +00:00
</approach>
<!-- Cruise configuration -->
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<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"/>
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.
2003-04-21 17:39:39 +00:00
<control-setting axis="/controls/flight/flaps" value="0.0"/>
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<control-setting axis="/controls/flight/slats" value="0"/>
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.
2003-04-21 17:39:39 +00:00
<control-setting axis="/controls/gear/gear-down" value="0"/>
Initial revision.
2003-04-21 14:18:07 +00:00
</cruise>
<cockpit x="5.70" y="0.00" z="1.26"/>
<!-- Fuselage entries for the fuselage proper and the two
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
engine housings.
Initial revision.
2003-04-21 14:18:07 +00:00
-->
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<!-- Fuselage -->
Initial revision.
2003-04-21 14:18:07 +00:00
<fuselage ax="10.00" ay="0.00" az="0.00"
bx="-2.00" by="0.00" bz="0.00"
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
width="1.6" taper="0.5" midpoint="0.5"/>
<!-- Left engine housing -->
Initial revision.
2003-04-21 14:18:07 +00:00
<fuselage ax="-2.00" ay="1.80" az="0.00"
bx="-8.00" by="1.20" bz="0.60"
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
width="1.2" taper="0" midpoint="0.3"/>
<!-- Right engine housing -->
Initial revision.
2003-04-21 14:18:07 +00:00
<fuselage ax="-2.00" ay="-1.80" az="0.00"
bx="-8.00" by="-1.20" bz="0.60"
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
width="1.2" taper="0" midpoint="0.3"/>
Initial revision.
2003-04-21 14:18:07 +00:00
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
<!-- Lots of guesswork here -->
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<wing x="-2.00" y="0.00" z="0.25" length="6.66" chord="12.00"
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
taper="0.08" sweep="0" dihedral="0" camber="0.01" incidence="0.0">
<stall aoa="35" width="2" peak="1.3"/>
<flap0 start="0.36" end="0.63" lift="1.5" drag="1.6"/>
<flap1 start="0.63" end="0.89" lift="1.05" drag="1.3"/>
Initial revision.
2003-04-21 14:18:07 +00:00
<slat start="0.42" end="0.89" aoa="3" drag="1.1"/>
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
<!-- Shortened wing that starts outboard of the engine intakes
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<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">
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
<stall aoa="35" width="2" peak="1.3"/>
<flap0 start="0.0" end="0.42" lift="1.5" drag="1.6"/>
<flap1 start="0.42" end="0.833" lift="1.05" drag="1.3"/>
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<slat start="0.14" end="0.833" aoa="3" drag="1.1"/>
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
-->
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.
2003-04-21 17:39:39 +00:00
<control-input axis="/controls/flight/flaps" control="FLAP0"/>
<control-input axis="/controls/flight/aileron" control="FLAP1" split="true"/>
<control-input axis="/controls/flight/aileron-trim" control="FLAP1" split="true"/>
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<control-input axis="/controls/flight/slats" control="SLAT"/>
Initial revision.
2003-04-21 14:18:07 +00:00
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
<control-input axis="/controls/flight/rudder" control="FLAP1" split="true" square="false"/>
<control-output control="FLAP0" prop="/surface-positions/left-flap-pos-norm"/>
<control-output control="FLAP0" prop="/surface-positions/right-flap-pos-norm"/>
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<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"/>
Initial revision.
2003-04-21 14:18:07 +00:00
<control-speed control="FLAP1" transition-time="0.5"/>
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<control-output control="SLAT" prop="/surface-positions/slat-pos-norm"/>
Initial revision.
2003-04-21 14:18:07 +00:00
</wing>
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<hstab x="-8.70" y="2.40" z="0.36" length="3.30" chord="5.10"
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
taper="0.11" sweep="0" dihedral="40" camber="0.01" effectiveness="1">
<stall aoa="24" width="2" peak="1.3"/>
<flap0 start="0" end="1" lift="1.8" drag="1.6"/>
Initial revision.
2003-04-21 14:18:07 +00:00
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.
2003-04-21 17:39:39 +00:00
<control-input axis="/controls/flight/elevator" control="FLAP0"/>
<control-input axis="/controls/flight/elevator-trim" control="FLAP0"/>
Initial revision.
2003-04-21 14:18:07 +00:00
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
<control-input axis="/controls/flight/rudder" control="FLAP0" split="true" square="false"/>
<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"/>
Initial revision.
2003-04-21 14:18:07 +00:00
<control-speed control="FLAP0" transition-time="0.5"/>
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
Initial revision.
2003-04-21 14:18:07 +00:00
</hstab>
<!-- The only figures I've found for the F119-PW-100L give 35000lb
'class' with afterburner. The difference between the top speed
with and with out afterburner (mach 1.43 vs mach 2) suggests that
the afterburner ratio is << 2:1 so I've used a ratio suggested by
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
those mach speeds + plus a fudge factor = 0.7.
Initial revision.
2003-04-21 14:18:07 +00:00
-->
<jet x="-6.26" y="1.20" z="0.60" mass="3000" thrust="24500" afterburner="35000">
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.
2003-04-21 17:39:39 +00:00
<control-input axis="/controls/engines/engine[0]/throttle" control="THROTTLE"/>
<control-input axis="/controls/engines/engine[0]/afterburner" control="REHEAT"/>
Initial revision.
2003-04-21 14:18:07 +00:00
</jet>
<jet x="-6.26" y="-1.20" z="0.60" mass="3000" thrust="24500" afterburner="35000">
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.
2003-04-21 17:39:39 +00:00
<control-input axis="/controls/engines/engine[1]/throttle" control="THROTTLE"/>
<control-input axis="/controls/engines/engine[1]/afterburner" control="REHEAT"/>
Initial revision.
2003-04-21 14:18:07 +00:00
</jet>
<!-- Front -->
<gear x="5.25" y="0.00" z="-2.25" compression="0.65" spring="2.0">
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.
2003-04-21 17:39:39 +00:00
<control-input axis="/controls/flight/rudder" control="STEER" square="true"/>
<control-input axis="/controls/gear/gear-down" control="EXTEND"/>
Initial revision.
2003-04-21 14:18:07 +00:00
<control-output control="EXTEND" prop="/gear/gear[0]/position-norm"/>
<control-output control="STEER" prop="/gear/gear[0]/steering-norm"/>
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<control-speed control="EXTEND" transition-time="4"/>
Initial revision.
2003-04-21 14:18:07 +00:00
</gear>
<!-- Left main -->
<gear x="-2.20" y="1.92" z="-2.7" compression="1.2" spring="1.5">
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<control-input axis="/controls/gear/wheel[0]/brake" control="BRAKE"/>
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.
2003-04-21 17:39:39 +00:00
<control-input axis="/controls/gear/gear-down" control="EXTEND"/>
Initial revision.
2003-04-21 14:18:07 +00:00
<control-output control="EXTEND" prop="/gear/gear[1]/position-norm"/>
<control-speed control="EXTEND" transition-time="4"/>
</gear>
<!-- Right main -->
Lee Elliott: 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;)
2003-05-28 15:09:30 +00:00
<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"/>
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.
2003-04-21 17:39:39 +00:00
<control-input axis="/controls/gear/gear-down" control="EXTEND"/>
Initial revision.
2003-04-21 14:18:07 +00:00
<control-output control="EXTEND" prop="/gear/gear[2]/position-norm"/>
<control-speed control="EXTEND" transition-time="4"/>
</gear>
<!-- Canopy -->
<gear x="4.1" y="0.0" z="1.05" retract-time="7" compression="0.6">
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.
2003-04-21 17:39:39 +00:00
<control-input axis="/controls/gear/parking-brake" control="EXTEND"/>
Initial revision.
2003-04-21 14:18:07 +00:00
<control-speed control="EXTEND" transition-time="10"/>
<control-output control="EXTEND" prop="/canopy/position-norm"/>
</gear>
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
<!-- The locations and capcities are guesswork. -->
Initial revision.
2003-04-21 14:18:07 +00:00
<!-- Fuselage tank -->
<tank x="1.5" y="0" z="0.68" jet="true" capacity="8000"/>
<!-- Left wing tank -->
<tank x="-1.40" y="2" z="0.0" jet="true" capacity="8000"/>
<!-- Right wing tank -->
<tank x="-1.40" y="-2" z="0.0" jet="true" capacity="8000"/>
<!-- Avionics -->
<ballast x="4" y="0" z="0.6" mass="3000"/>
<!-- Cockpit and radar -->
<ballast x="7" y="0" z="0.2" mass="1500"/>
<!-- Pilot -->
<ballast x="5.8" y="0" z="0.6" mass="200"/>
<!-- Trim ballast -->
Lee Elliott: I've been messing with the yf23 some more. I think it flies a bit better now and has more reasonable auto-pilot take-off characteristics - just apply full power and go, and it doesn't go into such a steep climb. Out of curiosity, I've also taken the rudder control input and linked it to the stabilators/elevators and ailerons. Now, with some slick joystick manipulation it's possible to fly it at about 30 deg off-axis in more or less level flight (actually, with full 'rudder' input, it looks nearer to 40 deg to me and you end up tracing a very long curve). If no rudder input is used it flies 'normally'. I'd like to be able to 'tune' it so that it's more stable while transitioning but I'm not sure if that's going to be possible. It's also high-lighted some problems I'm having with my Sidewinder joystick - when I use the rudder control, the engine No.2 throttle jumps to 50% unless auto-throttle is engaged (this also happens with the b52 too), and there seems to be some interaction between the different axis if all three (roll, pitch and rudder) are changed at the same time - difficult to be sure on that one though. I'll probably un-map the throttle control from the joystick as I tend to use the keyboard for engine control anyway, especially for landing.
2003-06-04 17:54:08 +00:00
<ballast x="6" y="0" z="0.0" mass="2000"/>
Initial revision.
2003-04-21 14:18:07 +00:00
</airplane>
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