I didn't exactly do much with it-just one simple test flight. If I have some more time I'll try to fix stuff like stall speed and such.
By the way I'll try to make a list of changes here:
-Wing geometry changed (dual-wing set)
-Engine tsfc changed
-Elevators messed with
-Approach, cruise modified
-Overall YASim lift ratio down from ~220 to ~125.
Of course, it still needs to be made flyable, but that's something that I can do. Something that I noticed was that brakes weren't working, though that might just be my computer itself.
EDIT:
- Code: Select all
<!--777-200 ER yasim
Specs:
2 - 90,000 lb PW4090 turbofans
or 93,700 lb GE90-94Bs
or 93,400 lb Rolls-Royce Trent 877s
Typical Cruise = 0.84 Mach / 35000 ft
Max Speed = 0.87 / 35000 ft
Wing span: 60.93m
Length: 63.73 m
Tail Height: 18.51m
Diameter : 6.19 m
Wing Area: 427.8m2
Max Fuel :45,220 US gal
Max TO weight: 656,000 lbs
TO speed : 145 kt
Landing speed : 131 kt
Leading edge MAC = -3.132
Vr 137
V2 147
Datum 92.5 in forward of nose - 2.3495 m
MAC 278.51 in - 7.074154 m
-->
<airplane mass="315000">
<!-- Approach configuration -->
<approach speed="139" aoa="3" fuel="0.1">
<control-setting axis="/controls/engines/engine[0]/throttle-lever" value="0.35"/>
<control-setting axis="/controls/engines/engine[1]/throttle-lever" value="0.35"/>
<control-setting axis="/controls/flight/flaps" value="1"/>
<control-setting axis="/surface-positions/flap-pos-norm" value="1"/>
<control-setting axis="/controls/gear/gear-down" value="1"/>
<solve-weight idx="0" weight="350"/>
<solve-weight idx="1" weight="80000"/>
</approach>
<!-- Cruise configuration -->
<cruise speed="490" alt="35000" fuel="0.8">
<control-setting axis="/controls/engines/engine[0]/throttle-lever" value="0.8"/>
<control-setting axis="/controls/engines/engine[1]/throttle-lever" value="0.8"/>
<control-setting axis="/controls/flight/flaps" value="0.0"/>
<control-setting axis="/controls/gear/gear-down" value="0"/>
<control-setting axis="/surface-positions/flap-pos-norm" value="1"/>
<solve-weight idx="0" weight="350"/>
<solve-weight idx="1" weight="80000"/>
</cruise>
<cockpit x="22.8" y="0.5" z="0.75"/>
<fuselage ax="25.36" ay="0" az="-0.64" bx="-20.0" by="0.00" bz="0.0"
width="6.2" taper="0.0" midpoint="1.0"/>
<fuselage ax="16.231" ay="0" az="0" bx="-20.0" by="0.00" bz="0.0"
width="6.2" taper="1.0" midpoint="0.5"/>
<fuselage ax="-20.0" ay="0" az="0" bx="-37.0" by="0.00" bz="1.2"
width="6.2" taper="0.0" midpoint="0.0"/>
<fuselage ax="4.0" ay="9.8" az="-3" bx="-1.8" by="9.8" bz="-3"
width="1.9" taper="1.0"/>
<fuselage ax="4.0" ay="-9.8" az="-3" bx="-1.8" by="-9.8" bz="-3"
width="1.9" taper="1.0"/>
<wing x="-3" y="3.095" z="-1.5" length="8.5" chord="13.7" sweep="20" taper="0.6" dihedral="9" camber="0.1" incidence="3" twist="-1.5">
<stall aoa="12" width="12" peak="1.5"/>
<flap0 start="0.00001" end=".6" lift="1.6" drag="1.15"/>
<slat start="0.12" end=".65" aoa="2" drag="1.2"/>
<spoiler start="0.03" end="0.67" lift="0.2" drag="2.0"/>
<control-input axis="/controls/flight/flaps" control="FLAP0"/>
<control-input axis="/surface-positions/flap-pos-norm" control="SLAT" src0="0.5" dst0="0" src1="1.0" dst1="1.0"/>
<control-input axis="/controls/flight/speedbrake" control="SPOILER"/>
<control-output control="FLAP0" prop="/surface-positions/flap-pos-norm"/>
<control-output control="SLAT" prop="/surface-positions/slats"/>
<control-output control="SPOILER" prop="/surface-positions/speedbrake-norm"/>
<control-speed control="FLAP0" transition-time="78"/>
<control-speed control="SPOILER" transition-time="5"/>
</wing>
<mstab x="-5.969" y="10.984" z="-0.404" length="21.8" chord="8.22" sweep="27.2" taper="0.23" dihedral="6.5" camber="0.05" incidence="1.5" twist="-.5">
<stall aoa="12" width="12" peak="1.5"/>
<flap0 start="0.00001" end=".52" lift="1.4" drag="1.15"/>
<flap1 start=".52" end=".96" lift="1.4" drag="1.2"/>
<slat start="0.00001" end=".99" aoa="2" drag="1.2"/>
<spoiler start="0.03" end="0.48" lift="0.2" drag="2.0"/>
<control-input axis="/controls/flight/flaps" control="FLAP0"/>
<control-input axis="/surface-positions/flap-pos-norm" control="SLAT" src0="0.5" dst0="0" src1="1.0" dst1="1.0"/>
<control-input axis="/controls/flight/speedbrake" control="SPOILER"/>
<control-input axis="/controls/flight/aileron" control="FLAP1" split="true"/>
<control-input axis="/controls/flight/aileron-trim" control="FLAP1" split="true"/>
<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="78"/>
<control-speed control="SPOILER" transition-time="5"/>
</mstab>
<hstab x="-31.8" y="1.35" z="1.2" chord="6.5" length="10.8" taper=".45" sweep="30" dihedral="6.5" effectiveness="2.5">
<stall aoa="15" width="5" peak="1.5"/>
<flap0 start="0" end="1" lift="1.38" drag="1.1"/>
<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="-29.8" y="0" z="2.7" chord="8.4" length="11.7" taper="0.34" sweep="34">
<stall aoa="14" width="5" peak="1.5"/>
<flap0 start="0" end="1" lift="1.5" drag="1.2"/>
<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="1.16" y="9.89" z="-2.995" mass="13889" thrust="93400" spool-time="3"
egt="840" tsfc="0.32 " n1-idle="45" n1-max="105" n2-idle="70" n2-max="108">
<control-input axis="/controls/engines/engine[0]/throttle-lever" control="THROTTLE" src0="0.2" dst0="0" src1="1" dst1="1"/>
<control-input axis="/controls/engines/engine[0]/reverser" control="REVERSE_THRUST"/>
<control-output control="REVERSE_THRUST" prop="/surface-positions/reverser-norm[0]"/>
<control-speed control="REVERSE_THRUST" transition-time="4"/>
<actionpt x="-2.7" y="9.89" z="-2.995"/>
</jet>
<jet x="1.16" y="-9.89" z="-2.995" mass="13889" thrust="93400" spool-time="3"
egt="840" tsfc="0.32" n1-idle="45" n1-max="105" n2-idle="70" n2-max="108">
<control-input axis="/controls/engines/engine[1]/throttle-lever" control="THROTTLE" src0="0.2" dst0="0" src1="1" dst1="1"/>
<control-input axis="/controls/engines/engine[1]/reverser" control="REVERSE_THRUST"/>
<control-output control="REVERSE_THRUST" prop="/surface-positions/reverser-norm[1]"/>
<control-speed control="REVERSE_THRUST" transition-time="4"/>
<actionpt x="-2.7" y="-9.89" z="-2.995"/>
</jet>
<!-- nose -->
<gear x="19.28" y="0.00" z="-5.55"
compression="0.7" spring="1.2" damp="1" sfric="1.5" dfric="1.0">
<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="19"/>
</gear>
<gear x="-6.39" y="5.6" z="-5.7" compression="0.8" spring="1.0" sfric="1" dfric="0.9">
<control-input axis="/autopilot/autobrake/left-brake-output" control="BRAKE"/>
<control-input axis="/controls/gear/brake-parking" control="BRAKE"/>
<control-input axis="/controls/gear/brake-left" 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="20"/>
</gear>
<gear x="-6.39" y="-5.6" z="-5.7" compression="0.8" spring="1.0" sfric="1" dfric="0.9">
<control-input axis="/autopilot/autobrake/right-brake-output" control="BRAKE"/>
<control-input axis="/controls/gear/brake-parking" control="BRAKE"/>
<control-input axis="/controls/gear/brake-left" 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="20"/>
</gear>
<gear x="-7.8" y="5.6" z="-6.22" compression="3.0" spring="1.2" >
<control-input axis="/controls/gear/gear-down" control="EXTEND"/>
<control-output control="EXTEND" prop="/gear/gear[3]/position-norm"/>
<control-speed control="EXTEND" transition-time="20"/>
</gear>
<gear x="-7.8" y="-5.6" z="-6.22" compression="3.0" spring="1.2">
<control-input axis="/controls/gear/gear-down" control="EXTEND"/>
<control-output control="EXTEND" prop="/gear/gear[4]/position-norm"/>
<control-speed control="EXTEND" transition-time="20"/>
</gear>
<tank x="-4.3" y="5" z="-1.5" jet="true" capacity="64000"/>
<tank x="-4.3" y="0" z="-2.5" jet="true" capacity="174900"/>
<tank x="-4.3" y="-5" z="-1.5" jet="true" capacity="64000"/>
<weight x="22.0" y="0" z="0" mass-prop="/sim/weight[0]/weight-lb"/>
<weight x="-4.3" y="0" z="0" mass-prop="/sim/weight[1]/weight-lb"/>
<ballast x="20" y="0" z="0" mass="15000"/>
<ballast x="-30" y="0" z="4" mass="-28000"/>
<thruster x="19.28" y="0.00" z="-5.55" vx="1" vy="0" vz="0" thrust="20000">
<control-input axis="/sim/model/pushback/target-speed-fps" control="THROTTLE"
src0="-1" src1="1" dst0="-1" dst1="1"/>
</thruster>
</airplane>
Try that. Flies MUCH better than the old one. I was able to land it by hand, with the main gears touching down first as well.