Aircraft Tipping over

[+Veltro2k 6,340]

Cant understand why It starts ok then begins to lean on one side, then eventualy flips over

 

 

 

[NoseGear]

SystemType=LANDING_GEAR

Retractable=TRUE

DeployTime=5.0

AnimationID=1

DragArea=0.25

HideGearNode=FALSE

ModelNodeName=Gear_F

ShockNodeName=Strutn

ShockTravelAxis=Z-Axis

InsideNodeName=

ShockAnimationID=

ShockStroke=0.20

SpringFactor=2.0

DampingFactor=1.0

WheelNodeName=TireFR

RotationAxis=X-Axis

RollingRadius=0.370

CastoringWheel=TRUE

CastoringNodeName=Faxe

Steerable=TRUE

MaxSteeringSpeed=41.15

Locking=FALSE

MaxSteeringAngle=45.0

InputName=YAW_CONTROL

ControlRate=1.0

HasBrakes=FALSE

RollingCoefficient=0.05

MaxDeploySpeed=160.00

MaxLoadFactor=5.0

 

[LeftMainGear]

SystemType=LANDING_GEAR

Retractable=TRUE

DeployTime=5.0

AnimationID=1

DragArea=0.50

HideGearNode=TRUE

ModelNodeName=Gear_L

ShockNodeName=Strut01

ShockTravelAxis=Y-Axis

ShockStroke=0.25

SpringFactor=4.0

DampingFactor=2.0

WheelNodeName001=TIRELF

WheelNodeName002=TIRELR

RotationAxis=X-Axis

RollingRadius=0.60

CastoringWheel=FALSE

HasBrakes=TRUE

BrakingCoefficient=0.75

RollingCoefficient=0.05

MaxDeploySpeed=160.00

MaxLoadFactor=6.0

 

[RightMainGear]

SystemType=LANDING_GEAR

Retractable=TRUE

DeployTime=5.0

AnimationID=1

DragArea=0.50

HideGearNode=TRUE

ModelNodeName=Gear_R

ShockNodeName=Strut02

ShockTravelAxis=Y-Axis

ShockStroke=0.25

SpringFactor=4.0

DampingFactor=2.0

WheelNodeName001=TIRERF

WheelNodeName002=TIRERR

RotationAxis=X-Axis

RollingRadius=0.60

CastoringWheel=FALSE

HasBrakes=TRUE

BrakingCoefficient=0.75

RollingCoefficient=0.05

MaxDeploySpeed=160.00

MaxLoadFactor=6.0

Edited December 5, 2008 by Veltro2k

[+Jarhead1 27]

It had a little too much vodka? lol

[Silverbolt 104]

Hi Veltro!

 

you should see if the landing gears are relationated with Fuselage...(eh, i think you alredy now...but you can be missing it)

 

 

For example the F-4U:

 

[Fuselage]
ModelNodeName=Fuselage
ShowFromCockpit=TRUE
HasAeroCoefficients=TRUE
MassFraction=0.33
(...)
[b]SystemName[005]=TailGear[/b]

[LeftWing]
ParentComponentName=Fuselage
ModelNodeName=Leftwing
ShowFromCockpit=TRUE
DetachWhenDestroyed=FALSE
DamageRating=DESTROYED
(...)
[b]SystemName[003]=LeftMainGear[/b]


[RightWing]
ParentComponentName=Fuselage
ModelNodeName=Rightwing
ShowFromCockpit=TRUE
DetachWhenDestroyed=FALSE
DamageRating=DESTROYED
MassFraction=0.107
HasAeroCoefficients=TRUE
LiftSurface=TRUE
(...)
[b]SystemName[003]=RightMainGear[/b]


// Gears
[b][TailGear][/b]
SystemType=LANDING_GEAR
Retractable=TRUE
DeployTime=5.0
AnimationID=1
DragArea=0.25
HideGearNode=TRUE
ModelNodeName=RearStrut
InsideNodeName=
//ShockTravelAxis=Z-AXIS
ShockNodeName=Rearpiston
//ReverseShockOrientation=TRUE
ShockAnimationID=4
ShockStroke=0.2
SpringFactor=6.0
DampingFactor=2.0
WheelNodeName=RearTire
//RotationAxis=X-AXIS
RollingRadius=0.12
CastoringWheel=TRUE
CastoringNodeName=rearpivot
CastoringAxis=Z-AXIS
Steerable=TRUE
MaxSteeringSpeed=50.15
Locking=TRUE
MaxSteeringAngle=-45.0
InputName=YAW_CONTROL
ControlRate=1.0
HasBrakes=FALSE
RollingCoefficient=0.05
MaxDeploySpeed=139.83

[[b]LeftMainGear[/b]]
SystemType=LANDING_GEAR
Retractable=TRUE
DeployTime=5.0
AnimationID=1
DragArea=0.70
HideGearNode=TRUE
ModelNodeName=LeftMainGearStrut
InsideNodeName=
ShockNodeName=LeftMainGearActuator
ShockAnimationID=2
ShockStroke=0.20
SpringFactor=6.0
DampingFactor=2.0
WheelNodeName=LeftMainGear
RollingRadius=0.38
CastoringWheel=FALSE
HasBrakes=TRUE
BrakingCoefficient=0.35
RollingCoefficient=0.05
MaxDeploySpeed=139.83

[b][RightMainGear][/b]
SystemType=LANDING_GEAR
Retractable=TRUE
DeployTime=5.0
AnimationID=1
DragArea=0.70
HideGearNode=TRUE
ModelNodeName=RightMainGearStrut
InsideNodeName=
ShockNodeName=RightMainGearActuator
ShockAnimationID=3
ShockStroke=0.20
SpringFactor=6.0
DampingFactor=2.0
WheelNodeName=rightMainGear
ReverseModelOrientation=TRUE
RollingRadius=0.38
CastoringWheel=FALSE
HasBrakes=TRUE
BrakingCoefficient=0.35
RollingCoefficient=0.05
MaxDeploySpeed=139.83

Edited December 5, 2008 by Silverbolt

[FastCargo 412]

Veltro,

 

Troubleshooting:

 

1. Try in Normal flight mode

2. Try with nothing loaded at all on the wings

 

Report here with results...

 

FC

[+Veltro2k 6,340]

Veltro,

 

Troubleshooting:

 

1. Try in Normal flight mode

2. Try with nothing loaded at all on the wings

 

Report here with results...

 

FC

 

same problem

[FastCargo 412]

Can you state the CGPosition parameter?

 

FC

[+Veltro2k 6,340]

Can you state the CGPosition parameter?

 

FC

 

 

CGPosition=0.00,1.163,0.19

[FastCargo 412]

Couple of questions.

 

Looking closely at the main gear, the bogies seem asymetrical. Meaning, the right (looking forward) wheel on each main gear bogie seems to be forward...which results in a foot print that looks like this (looking down):

 

..||..||

||..||..

 

Now if the real aircraft is like that, then that's fine....but it means maybe the sim has some weirdness it doesn't like about the asymetric gear layout.

 

Or maybe it just looks that way to me...

 

That's about all I can think of at the moment...

 

FC

[+bigal1 0]

I've had this problem before and the only way i found to fix it was to unlink all the landing gear parts then reset xform . I'm guessing the problem was something to do with mesh pivot point orientation and animation , after resetting xform i think you will have to redo gear animation . Good luck

 

Ps . Dont forget to have backup of file just in case as xform reset cannot be undone ( i think lol ) .

Edited December 5, 2008 by bigal1

[+Veltro2k 6,340]

I've had this problem before and the only way i found to fix it was to unlink all the landing gear parts then reset xform . I'm guessing the problem was something to do with mesh pivot point orientation and animation , after resetting xform i think you will have to redo gear animation . Good luck

 

Ps . Dont forget to have backup of file just in case as xform reset cannot be undone ( i think lol ) .

 

 

tried that before didnt work...but here is some news: it started doing this after the update, was working fine before

[+Veltro2k 6,340]

I am just going to remodel the main gear and reanimate it..if all goes well will release a Beta of the Mig31 around the middle of next week

Edited December 5, 2008 by Veltro2k

[JediMaster 451]

Looking at FC's awesome ASCII art ( ) it looks like it has 2 left feet instead of mirror images. That still shouldn't result in a flip, but I can see how the game could see it as unstable. Did you use the same 3D model for both main gear bogies instead of "flipping" the left to make the right?