help IAI Arava WIP

[toot 302]

Ok so all I need is another mesh inside the fuselage, I'll do that 

[OlWilly 130]

On 08.06.2024 at 9:49 PM, toot said:

cant i scale everything and then ctrl-a and press on scaling?

Yes

Mue's extractor doesn't like scale being any other than 1, so make sure to ctrl-a any object you actually scale. Then it's no problem 

 

Secondly, Mue's LOD viewer could be used to show the ingame size of the model

When you put the cursor on any part of the model, it shows coordinates - which should be in meters

Just make sure that, let's say, the forward most and rear most points of the model sum up to a correct (or so) length

[toot 302]

Fixed all the issues i had with the model, now for the technical stuff:

everytime i try to land the aircraft decideds it wants to do a wheelie and not come out of that wheelie, no matter what approach i take when landing.

when i try to take off i spin out (guessing its just the low speed handeling of the game since it doesnt like planes taking off at an angle)

anyone know what can cause this? cg perhaps? The flight model im basing the plane of of is the vampire 5

[+daddyairplanes 10,241]

why not a FM of an aircraft closer to what you have. try the Let-410 (closest cargo plane in size and config i can think of )

[toot 302]

4 hours ago, daddyairplanes said:

why not a FM of an aircraft closer to what you have. try the Let-410 (closest cargo plane in size and config i can think of )

I tried using the dhc-6 since it had some similarities to the arava but I didn't like the flight model, then I went to the vampire because it had a similar configuration to the arava (and I'll tweak the model itself to make it less agile), but I'm still not sure whats causing the plane to be so backheavy

[+yakarov79 11,088]

all data file coordinates must correspond with coordinates/meshes on the model itself. COG, collision points, etc, 

I hardly see a similar configuration with a vampire...(starting with size) but anyway, try Boxcar data/fm. 

[toot 302]

12 minutes ago, yakarov79 said:

I hardly see a similar configuration with a vampire...(starting with size) but anyway, try Boxcar data/fm. 

Took the vampire because it has one elevator and the forks that hold it and the vertical stabilizers like the arava. It also had 2 separate flaps on each wing (not to mention airbrake) which helped me learn 

[Wrench 9,848]

so does the c-119. and they're call "tail booms"

[toot 302]

I fixed most issues in the flight model but for some reason my propellers are always spinning on the Z axis no matter what axis i set it up as, does anyone know how to fix it?

[Right_Engine]
ReferenceName=Pratt & Whitney Canada PT6A-27 620hp/460kW
SystemType=PROP_ENGINE
InputName=THROTTLE_CONTROL
EngineID=2
SLPowerDry=445000.0
ThrustAngles=0.0,0.0,0.0
ThrustPosition=2.857,2.541,0.0
ThrottleRate=0.3
AltitudeTableNumData=7
AltitudeTableDeltaX=3048.0
AltitudeTableStartX=0.0
AltitudeTableData=1.000,0.664,0.441,0.292,0.186,0.118,0.000
SpinnerNodeName=RightCone
StaticPropNodeName=prop.001
SlowPropNodeName=SlowPropR
FastPropNodeName=FastPropR
DamagedPropNodeName=
SlowPropRPM=1480
FastPropRPM=1800
MaxPropRPM=2000
IdlePropRPM=1000
BSFC=0.00298
ExhaustEmitterName=CleanExhaustEmitter
ExhaustPosition=2.857,1.894,1.247
ExhaustEffectSize=0.6
FireSuppression=TRUE
ContrailPosition=2.857,1.894,1.247
ConstantSpeed=TRUE
MaxPowerAnimationTime=0.1
MinPowerAnimationTime=0.3
NumBlades=3
PropDiameter=2.557
PropRotationDirection=LEFT
MomentOfInertia=0.0
PropPFactorCoefficient=0.01
PropTorqueFactor=0.01
PropEfficiencyAdvanceRatioTableNumData=8
PropEfficiencyAdvanceRatioTableDeltaX=0.2
PropEfficiencyAdvanceRatioTableStartX=0.0
PropEfficiencyAdvanceRatioTableData=0.023,0.842,0.870,0.870,0.870,0.870,0.841,0.702
GasTempMaxRPM=700.0
GasTempIdleRPM=400.0
GasTempChangeRate=2.0
OverheatTemp=750.0
DamageTempDelta=100.0
MinManifoldPressure=0.35
MaxManifoldPressure=1.0
OilPressMaxRPM=6.89
OilPressIdleRPM=2.75
OilPressChangeRate=0.5
LowOilPress=5.51
LowOilTempDelta=400.0
RotationAxis=y-Axis
 

[toot 302]

I tried fixing it but the engines still are spinning on the z axis instead of the y axis, no matter what i do. does anyone have any tips?

[+daddyairplanes 10,241]

what other prop birds have you looked at the data ini for?

its genereally a good idea with anything ini related to look up another bird that is similar to what youre working on. compare notes and see whats different

 

Edited July 22 by daddyairplanes

[toot 302]

I tried looking at some of the stocks and mods, but then I remembered helicopters have rotors that spin above and I found the RotationAxis field but it also didn't fix it

[Wrench 9,848]

ah, P-38 Lightning, maybe??? for FM data. might be lighter in GW then the Arava, but twin engined, twin boomed, 2 rudders one elevator

[Svetlin 545]

Could that be somehow hard-coded into the model during the construction in 3DS or Blender? Honestly, I have no practical knoweldge about 3d modelling. I am drawing my conclusions from my fiddling with data.ini files in trying to add or fix turning front landing gear and shocks. There are models where no matter what ini dancing I did, the front gear would not turn properly along the correct axis and/or the shocks would not function correctly. That made me believe such movements are somehow hard-coded into the model during the construction in 3DS or Blender. So, my guess is, that unless these movements are planned for and provided for during the model construction, the ini file alone will not help. I would put my bet the same applies also for rotors rotation axis. Of course it would be best if one of our 3D experts could confirm or reject that and shed some more light on the topic.

[+daddyairplanes 10,241]

try x axis