Aircraft veering to the side of the runway

[+Veltro2k 6,351]

What can cause this. it's like it needs its wheels balanced

but seriously, when I apply power the airplane starts veering to the side of the runway..how can this be fixed ?

[+Dels 649]

Check rolling radius and friction, also check drag values.

 

Additionally, if it's a multi-engine aircraft, check the thrust position/angles.

 

Dels

[+Veltro2k 6,351]

Check rolling radius and friction, also check drag values.

 

Additionally, if it's a multi-engine aircraft, check the thrust position/angles.

 

Dels

[Engine1]

SystemType=JET_ENGINE

InputName=THROTTLE_CONTROL

EngineID=1

HasAfterburner=TRUE

NumAfterburnerStages=4

SLThrustDry=86300.0

SLThrustWet=110000.0

ThrustAngles=0.0,0.00,0.0

ThrustPosition=-0.893,-9.491,0.193

ThrottleRate=0.5

NozzleAnimationID=

IdleThrottle=0.10

IdleRPM=0.68

IdleNozzle=0.0

CruiseThrottle=0.37

CruiseRPM=0.82

CruiseNozzle=1.0

MilThrottle=0.65

MilRPM=1.00

MilNozzle=1.0

MaxThrottle=0.78

MaxRPM=1.00

MaxNozzle=1.0

FullABThrottle=1.12

FullABRPM=1.00

FullABNozzle=0.0

AltitudeTableNumData=10

AltitudeTableDeltaX=3048.0

AltitudeTableStartX=0.0

AltitudeTableData=1.000,0.802,0.634,0.546,0.471,0.378,0.296,0.197,0.105,0.000

DryMachTableNumData=4

DryMachTableDeltaX=0.4

DryMachTableStartX=0.0

DryMachTableData=1.000,0.980,1.172,0.000

WetMachTableNumData=7

WetMachTableDeltaX=0.4

WetMachTableStartX=0.0

WetMachTableData=1.000,0.991,1.207,1.683,2.473,2.750,3.027

MaxInletTemperature=120

GyroscopicInertia=

TSFCM0=0.880

TSFCM1=1.290

AfterburnerTSFC=1.930

MinFuelFlow=0.02

AfterburnerEffectSize=1.36

ExhaustEmitterName=DirtyExhaustEmitter

ExhaustPosition=-0.893,-9.491,0.193

AfterburnerNodeName=afterburnerfire2

AfterburnerEmitterName=AfterburnerEmitter

MinExtentPosition=-1.13,-3.68,-1.02

MaxExtentPosition=-0.14, 1.36,-0.04

FireSuppression=TRUE

GasTempMaxRPM=635.0

GasTempIdleRPM=420.0

GasTempChangeRate=5.0

OverheatTemp=750.0

DamageTempDelta=300.0

OilPressMaxRPM=35.0

OilPressIdleRPM=55.0

OilPressChangeRate=0.5

LowOilPress=12.0

LowOilTempDelta=400.0

 

[Engine2]

SystemType=JET_ENGINE

InputName=THROTTLE_CONTROL

EngineID=2

HasAfterburner=TRUE

NumAfterburnerStages=4

SLThrustDry=86300.0

SLThrustWet=110000.0

ThrustAngles=0.0,0.00,0.0

ThrustPosition=0.893,-9.491,0.193

ThrottleRate=0.5

NozzleAnimationID=

IdleThrottle=0.10

IdleRPM=0.68

IdleNozzle=0.0

CruiseThrottle=0.37

CruiseRPM=0.82

CruiseNozzle=1.0

MilThrottle=0.65

MilRPM=1.00

MilNozzle=1.0

MaxThrottle=0.78

MaxRPM=1.00

MaxNozzle=1.0

FullABThrottle=1.12

FullABRPM=1.00

FullABNozzle=0.0

AltitudeTableNumData=10

AltitudeTableDeltaX=3048.0

AltitudeTableStartX=0.0

AltitudeTableData=1.000,0.802,0.634,0.546,0.471,0.378,0.296,0.197,0.105,0.000

DryMachTableNumData=4

DryMachTableDeltaX=0.4

DryMachTableStartX=0.0

DryMachTableData=1.000,0.980,1.172,0.000

WetMachTableNumData=7

WetMachTableDeltaX=0.4

WetMachTableStartX=0.0

WetMachTableData=1.000,0.991,1.207,1.683,2.473,2.750,3.027

MaxInletTemperature=120

GyroscopicInertia=

TSFCM0=0.880

TSFCM1=1.290

AfterburnerTSFC=1.930

MinFuelFlow=0.02

AfterburnerEffectSize=1.36

ExhaustEmitterName=DirtyExhaustEmitter

ExhaustPosition=0.893,-9.491,0.193

AfterburnerNodeName=afterburnerfire2

AfterburnerEmitterName=AfterburnerEmitter

MinExtentPosition= 1.13,-3.68,-1.02

MaxExtentPosition= 0.14, 1.36,-0.04

FireSuppression=TRUE

GasTempMaxRPM=635.0

GasTempIdleRPM=420.0

GasTempChangeRate=5.0

OverheatTemp=750.0

DamageTempDelta=300.0

OilPressMaxRPM=35.0

OilPressIdleRPM=55.0

OilPressChangeRate=0.5

LowOilPress=12.0

LowOilTempDelta=400.0

 

[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=Tire_FR

WheelNodeName=Tire_FL

RotationAxis=X-Axis

RollingRadius=0.40

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=

ShockTravelAxis=Y-Axis

ShockStroke=0.20

SpringFactor=4.0

DampingFactor=2.0

WheelNodeName001=TIRELF

WheelNodeName001=TIRELR

RotationAxis=X-Axis

RollingRadius=0.50

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=

ShockTravelAxis=Y-Axis

ShockStroke=0.20

SpringFactor=4.0

DampingFactor=2.0

WheelNodeName001=TIRERF

WheelNodeName001=TIRERR

RotationAxis=X-Axis

RollingRadius=0.50

CastoringWheel=FALSE

HasBrakes=TRUE

BrakingCoefficient=0.75

RollingCoefficient=0.05

MaxDeploySpeed=160.00

MaxLoadFactor=6.0

[+ravenclaw_007 7,633]

i had a similar issue on the Bucc there was one value on the wing positive in stead of negative

Edited August 1, 2011 by ravenclaw_007

[+Dels 649]

Well none of the obvious culprits are visible.

 

Can you try rolling down the runway at various power settings to assess when the yaw starts to kick in and/or the severity at various speeds/power settings.

 

If it's move evident at faster speeds then it could be a drag value of an aircraft component. In line with this, does the aircraft fly in balance (i.e. skid ball central)?

 

Dels

[+Spillone104 553]

Ed, try to look in your 3D file and see if for exhample the left wing have a simmetrical pivot point with the right one. There are some aircrafts that have this issues with pylons. When you load weapons on them they have all the weigh on a side because the pylons have the pivot in wrong position.