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Hi,

I was wondering if someone could answer some questions on the implementation of WEP on the PROP_ENGINE system type?

1) Was this system fully implemented in SFP2 or have more recent patches broken it?

2) The WEPTimeLimit= parameter - does this actually work?

I've been trying to figure this out by creating engines with almost zero "SLPowerDry" and giving a reasonable level of "SLPowerWEP". The hope is to test if WEP is actually working - the idea being to get the aircraft to takeoff and climb for a minute or two at WEP power before seeing power suddenly drop off as WEP runs out. All that happens is that the plane struggles to even move on the runway with almost zero thrust - WEP never kicks in, effectively giving a 0hp engine.

If anyone has any clues or can even share the engine section from TK's P-51D as an example that'd be great.

Thanks!

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From the P-51D_Data.ini.

[Engine]
SystemType=PROP_ENGINE
InputName=THROTTLE_CONTROL
EngineID=1
HasWEP=TRUE
SLPowerDry=1113479.3
SLPowerWEP=1234610.1
ThrustAngles=0.0,0.0,0.0
ThrustPosition=0.0,0.0,0.0
WEPThrottle=0.90
ThrottleRate=0.25
AltitudeTableNumData=23
AltitudeTableDeltaX=609.6
AltitudeTableStartX=0.0
AltitudeTableData=1.000,1.016,1.031,1.047,1.062,1.013,0.938,0.891,0.899,0.908,0.916,0.896,0.829,0.761,0.693,0.625,0.558,0.490,0.422,0.321,0.219,0.117,0.000
WEPAltitudeTableNumData=23
WEPAltitudeTableDeltaX=609.6
WEPAltitudeTableStartX=0.0
WEPAltitudeTableData=1.000,1.014,1.028,1.042,0.984,0.916,0.878,0.888,0.897,0.906,0.875,0.813,0.750,0.688,0.626,0.564,0.502,0.440,0.378,0.284,0.191,0.098,0.000
WEPMaxAlt=6479.0
WEPTimeLimit=300.0
WEPTempDelta=10.0
WEPManifoldPressure=67
NumBlades=4
PropDiameter=3.40
MomentOfInertia=6.13
PropEfficiencyAdvanceRatioTableNumData=15
PropEfficiencyAdvanceRatioTableDeltaX=0.2
PropEfficiencyAdvanceRatioTableStartX=0.0
PropEfficiencyAdvanceRatioTableData=0.027,0.496,0.730,0.845,0.870,0.870,0.870,0.870,0.870,0.870,0.870,0.870,0.870,0.204,0.000
PropPFactorCoefficient=0.0
ConstantSpeed=TRUE
PropRotationDirection=1
SpinnerNodeName=prop_spinner_axel
StaticPropNodeName=Spinner Static
SlowPropNodeName=Spinner Slow
FastPropNodeName=Spinner Fast
DamagedPropNodeName=
SlowPropRPM=400
FastPropRPM=1000
MaxPropRPM=1437
IdlePropRPM=600
BSFC=0.00280
MinManifoldPressure=26
MaxManifoldPressure=61
GasTempIdleRPM=70
GasTempMaxRPM=80
GasTempChangeRate=0.033
OverheatTemp=90
DamageTempDelta=20
OilPressIdleRPM=70.0
OilPressMaxRPM=80.0
OilPressChangeRate=0.4
LowOilPress=50.0
LowOilPressTempDelta=100
ExhaustEmitterName=
ExhaustPosition=
FireSuppression=FALSE
MinExtentPosition=-0.35, 0.91,-0.63
MaxExtentPosition= 0.35, 3.40, 0.37
AnimationID=-1
MaxPowerAnimationTime=0.1
MinPowerAnimationTime=0.3

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WEP actually does work. The time limit is in seconds (and the hardest thing to pin down without the actual aircraft's flight manual -- that's how I found what it was for the P-61). Also, it has to actually be associated with an engine, not a 'fake engine'. It's set by percentage of throttle (s/b 99% or better). When the timer runs out, all you have is "regular' full throttle, without the extra HP boost.

also, curious was to why you just didn't extract the Mustang (or Spit 9) data ini yourself. 

 

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Thanks for the responses - really useful. I'll try some testing based on that engine data.

With respect to why I didn't extract the data myself - I've never got round to buying Exp1 so didn't have the base files. Probably something I should remedy! 

Thanks again!

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Found the problem - not having Exp1 (and the P-51D).

Bit the bullet, purchased Exp1 and as soon as I'd done that took the plane out for a test flight - noticed a new red highlighted "100% (WEP)" in the game HUD and a noticeable jump in performance.

Obviously needed Exp1 to make this parameter work - not just the patches.

 

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You WON'T be sorry!!!

 

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