( not sure how to reply to the thread, I don't have it in my mail.
This is in reference to :
http://sourceforge.net/mailarchive/message.php?msg_name=4B58FCDF.1000905%40daffodil.uk.com
)
Hello,
I have been looking into the 787 yasim fuselage , using the blender
import script by Melchior Franz as suggested.
Using the original 787.xml file as it is in CVS now, ie :
<fuselage ax="-13.6" ay="0" az="1.4" bx="-13.6" by="0.00" bz="1.4"
width="5.9" taper="0.1" midpoint="0"/>
we see the following : http://imagebin.org/83127
Without surprise, that fuselage section has zero length.
I stretched it in blender so that it fits the model fuselage ( shown in
wire on the image ) :
http://imagebin.org/83128
So blender gives us the following measurements for the tip of that section:
http://imagebin.org/83129
Given that X is reverted in blender, the corrected relevant yasim line
would then be :
<fuselage ax="-13.6" ay="0" az="1.4" bx="-29.338" by="0.00" bz="2.12"
width="5.9" taper="0.1" midpoint="0"/>
This makes a total yasim fuselage length of 25.91 + 29.338 = 55.248,
closer to the 56.7 that LeeE gives us as reference.
I presume this fix makes it much closer to the author's original intention.
Now this would need flight testing, and I am no expert with 787 flight,
so my experiments would not give a good lighting on the problem.
If someone with 787 knowledge could try this, and finds it flies
correctly, maybe we could commit it to CVS, hoping that the author will
not be upset that we change his file.
I just wanted to give my 2 cents , and try to revive a plane that seems
to be a nice one , and suffers a little typo that sticks it in the garage :)
Please find the corrected 787.xml file attached.
<!--787 yasim
Specs:
or 75,000 lb GENXs
or 75,000 lb Rolls-Royce Trent 1000s
Typical Cruise = 0.85 Mach / 35000 ft
Max Speed = 0.87 / 35000 ft
Wing span: 60.10m
Length: 56.7 m
Tail Height: 16.97m
Diameter : 5.74 m
Wing Area: 427.8m2
Max Fuel :33,528 US gal
Max TO weight: 484,000 lbs
http://www.boeing.com/commercial/airports/787.html
TO speed : 145 kt
Landing speed : 131 kt
Mach 1 = 576.6 kt @ 35,000 ft -->
<!--airplane mass="240000"-->
<airplane mass="252500">
<!-- Approach configuration -->
<approach speed="120" aoa="7">
<control-setting axis="/controls/engines/engine[0]/throttle" value="0.2"/>
<control-setting axis="/controls/engines/engine[1]/throttle" value="0.2"/>
<control-setting axis="/controls/flight/flaps" value="1.0"/>
<control-setting axis="/controls/flight/slats" value="1.0"/>
<control-setting axis="/controls/gear/gear-down" value="1"/>
<solve-weight idx="0" weight="350"/>
<solve-weight idx="1" weight="45000"/>
</approach>
<!-- Cruise configuration -->
<cruise speed="501" alt="35000">
<control-setting axis="/controls/engines/engine[0]/throttle" value="0.8"/>
<control-setting axis="/controls/engines/engine[1]/throttle" value="0.8"/>
<control-setting axis="/controls/flight/flaps" value="0.0"/>
<control-setting axis="/controls/gear/gear-down" value="0"/>
<solve-weight idx="0" weight="350"/>
<solve-weight idx="1" weight="45000"/>
</cruise>
<cockpit x="24" y="0.5" z="2.1"/>
<fuselage ax="25.91" ay="0" az="0.1" bx="23.0" by="0.00" bz="0.6"
width="3.6" taper="0.0" midpoint="1.0"/>
<fuselage ax="25.91" ay="0" az="0.1" bx="23.0" by="0.00" bz="1.2"
width="3.6" taper="0.0"/>
<fuselage ax="23.0" ay="0" az="0.6" bx="16.0" by="0.00" bz="1.4"
width="5.9" taper="0.62" midpoint="0.8"/>
<fuselage ax="23.0" ay="0" az="1.2" bx="16.0" by="0.00" bz="1.4"
width="5.9" taper="0.62"/>
<fuselage ax="16.0" ay="0" az="1.4" bx="-13.6" by="0.00" bz="1.4"
width="5.9" taper="1.0" midpoint="0.4"/>
<fuselage ax="-13.6" ay="0" az="1.4" bx="-29.338" by="0.00" bz="2.12"
width="5.9" taper="0.1" midpoint="0"/>
<fuselage ax="8.3" ay="9.65" az="1.1" bx="-1.8" by="9.8" bz="1.1"
width="3.8" taper="1.0"/>
<fuselage ax="8.3" ay="-9.65" az="1.1" bx="-1.8" by="-9.8" bz="1.1"
width="3.8" taper="1.0"/>
<!--wing x="2.5" y="3.0" z="0.35" length="29.8" chord="11.15" sweep="29"
taper=".13" dihedral="8" camber="0.05" incidence="0"-->
<wing x="2.5" y="3.0" z="-0.35" length="29.8" chord="11.15" sweep="29"
taper=".13" dihedral="8" camber="0.005" incidence="1.25">
<stall aoa="15" width="8" peak="1.5"/>
<flap0 start="0" end=".56" lift="1.6" drag="1.9"/>
<flap1 start=".64" end=".88" lift="1.3" drag="1.2"/>
<slat start="0" end="1" aoa="2" drag="1.1"/>
<spoiler start="0.2" end="0.6" lift="0.3" drag="2.0"/>
<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"/>
<control-input axis="/controls/flight/slats" control="FLAP0"/>
<control-input axis="/controls/flight/spoilers" control="SPOILER"/>
<control-output control="FLAP0" prop="/surface-positions/flap-pos-norm"/>
<control-output control="FLAP0" prop="/surface-positions/slats"/>
<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="10"/>
</wing>
<!--hstab x="-23.4" y="1.35" z="1.95" chord="5.3" length="10.1" taper=".30"
sweep="35" dihedral="7.0" effectiveness="2.0" incidence="-1.25"-->
<hstab x="-31.4" y="1.35" z="1.95" chord="5.3" length="10.1" taper=".30"
sweep="25" dihedral="7.0" effectiveness="2.0" incidence="0">
<stall aoa="15" width="2" peak="1.5"/>
<flap0 start="0" end="1" lift="1.5" drag="1.2"/>
<control-input axis="/controls/flight/elevator" control="FLAP0"/>
<control-input axis="/controls/flight/elevator-trim" control="FLAP0"/>
<control-output control="FLAP0" prop="/surface-positions/elevator-pos-norm"/>
</hstab>
<vstab x="-30.2" y="0.00" z="3.76" chord="6.6" length="10.6" taper="0.35"
sweep="33" effectiveness="1.5">
<stall aoa="15" width="2" peak="1.5"/>
<flap0 start="0" end="1" lift="1.3" drag="1.3"/>
<control-input axis="/controls/flight/rudder" control="FLAP0" invert="true"/>
<control-input axis="/controls/flight/rudder-trim" control="FLAP0" invert="true"/>
<control-output control="FLAP0" prop="/surface-positions/rudder-pos-norm"
min="1" max="-1"/>
</vstab>
<jet x="7" y="9.63" z="-0.85" mass="7500" thrust="90500" egt="810" tsfc="0.125">
<control-input axis="/controls/engines/engine[0]/throttle" control="THROTTLE"/>
<control-input axis="/controls/engines/engine[0]/reverser" control="REVERSE_THRUST"/>
<!--control-input axis="/controls/engines/engine[0]/condition" control="CONDLEVER"/-->
<!--control-input axis="/controls/engines/engine[0]/starter" control="STARTER"/-->
<actionpt x="2" y="9.63" z="-0.85"/>
</jet>
<jet x="7" y="-9.63" z="-0.085" mass="7500" thrust="90500" egt="810" tsfc="0.125">
<control-input axis="/controls/engines/engine[1]/throttle" control="THROTTLE"/>
<control-input axis="/controls/engines/engine[1]/reverser" control="REVERSE_THRUST"/>
<!--control-input axis="/controls/engines/engine[1]/condition" control="CONDLEVER"/-->
<!--control-input axis="/controls/engines/engine[1]/starter" control="STARTER"/-->
<actionpt x="2" y="-9.63" z="-0.85"/>
</jet>
<!-- APU -->
<jet x="-26.5" y="0" z="2" mass="300" thrust="50" egt="810" tsfc="0.9" n1-idle="80" n2-idle="85">
<control-input axis="/controls/engines/engine[2]/throttle" control="THROTTLE"/>
</jet>
<!-- nose -->
<gear x="20.56" y="0.00" z="-3.2"
compression="0.75" spring="0.7" damp="4">
<control-input axis="/controls/flight/rudder" control="STEER" square="true"/>
<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="7"/>
</gear>
<gear x="-1.97" y="4.88" z="-3.85" compression="1.1">
<control-input axis="/controls/gear/brake-left" control="BRAKE"/>
<control-input axis="/controls/gear/brake-parking" 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="7"/>
</gear>
<gear x="-1.97" y="-4.88" z="-3.85" compression="1.1">
<control-input axis="/controls/gear/brake-right" control="BRAKE"/>
<control-input axis="/controls/gear/brake-parking" 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="7"/>
</gear>
<!--tank x="2" y="6.5" z="0.65" jet="true" capacity="50000"/>
<tank x="2" y="-6.5" z="0.65" jet="true" capacity="50000"/>
<tank x="3.5" y="0" z="1.0" jet="true" capacity="110000"/-->
<tank x="0" y="7.5" z="0.65" jet="true" capacity="52000"/>
<tank x="0" y="-7.5" z="0.65" jet="true" capacity="52000"/>
<tank x="0" y="0" z="-1" jet="true" capacity="120000"/>
<!--ballast x="21.0" y="0" z="1" mass="18000"/-->
<ballast x="21.0" y="0" z="1" mass="15000"/>
<ballast x="-3" y="5.0" z="0" mass="1500"/>
<ballast x="-3" y="-5.0" z="0" mass="1500"/>
<weight x="15" y="0" z="2" mass-prop="/consumables/payload/forward-passengers-pounds"/>
<weight x="1" y="0" z="2" mass-prop="/consumables/payload/center-passengers-pounds"/>
<weight x="-8" y="0" z="2" mass-prop="/consumables/payload/aft-passengers-pounds"/>
<weight x="11.25" y="0" z="-0.5" mass-prop="/consumables/payload/fwd-cargo-pounds"/>
<weight x="-14.5" y="0" z="0" mass-prop="/consumables/payload/aft-cargo-pounds"/>
</airplane>
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