The Pratt & Whitney PW1120

[WarlordATF 1]

The release of the fictional Lavi skin caused me to create a Monster!

 

I downloaded and installed the skin but i soon realized that it still wasn't a Lavi, so i started doing my homework and i adjusted the dry weight,weapons stations and upgraded the Radar.

 

Then i learned about the Engine IAI intended to use, the Pratt & Whitney PW1120.

 

http://en.wikipedia.org/wiki/Pratt_&_Whitney_PW1120

 

Wow! Why wasn't this engine mass produced?? I know it was expensive, but IMHO the IAF and USAF could have both used this beast of an engine.

 

I started with the F-15As Pratt & Whitney F-100 and crunched the numbers and After i fitted it to the J-10/Lavi i noticed a major performance boost.

 

Then i decided to make a copy of the Mirage Factorys F-4E Kurnass and fitted it with a few upgrades and a pair of these engines to simulate the Kurnass 2000 and I was able to super cruise at 68% throttle at 25000 ft! The Kurnass 2000 ended up sticking with the J-79s, but the PW1120 was the intended engine.

 

Its not perfect, I still need to reduce fuel consumption and there might still be a mistake or two but Here is the Version i'm using in my Lavi in case anyone wants to play around with it, feel free to correct any of my errors and i'd love to hear what you think.

 

[Engine]

ReferenceName=Pratt & Whitney PW1120

SystemType=JET_ENGINE

InputName=THROTTLE_CONTROL

EngineID=1

HasAfterburner=TRUE

NumAfterburnerStages=6

SLThrustDry=60181.4

SLThrustWet=91562.0

ThrustAngles=0.0,0.0,0.0

ThrustPosition=0.00,-1.30,0.00

ThrottleRate=0.5

NozzleAnimationID=4

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=12

AltitudeTableDeltaX=1828.8

AltitudeTableStartX=0.0

AltitudeTableData=1.000,0.832,0.685,0.559,0.451,0.359,0.282,0.211,0.158,0.118,0.089,0.000

DryMachTableNumData=14

DryMachTableDeltaX=0.2

DryMachTableStartX=0.0

DryMachTableData=1.000,0.967,0.981,1.041,1.148,1.172,1.344,1.551,1.784,2.030,2.262,2.430,2.454,0.000

WetMachTableNumData=14

WetMachTableDeltaX=0.2

WetMachTableStartX=0.0

WetMachTableData=1.000,0.984,1.021,1.112,1.264,1.487,1.779,2.157,2.641,3.244,3.982,4.861,5.103,0.000

MaxInletTemperature=223.7

GyroscopicInertia=

TSFCM0=0.843

TSFCM1=1.260

AfterburnerTSFC=1.970

MinFuelFlow=0.01

ExhaustEmitterName=CleanExhaustEmitter

ExhaustPosition=0,-6.5,0.00

AfterburnerNodeName=BurnerOn

AfterburnerEmitterName=F15AfterburnerEmitter

MinExtentPosition=-0.01,-0.1, 0.0

MaxExtentPosition= 0.01,-6,0.0

FireSuppression=TRUE

GasTempMaxRPM=678.0

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

[+76.IAP-Blackbird 3,557]

Looks interesting, will refit my Kurnass 2000 and Lavi with this engine. It should work good. Thanks for your posting, but have no idea about the fuel consumption.

 

My first thought was it`s the Machdrytaledata stuff but I don`t know for what it`s good.

[WarlordATF 1]

If your going to put this engine in a F-4 (Or any other plane) you will have to change some of the data to match the engines you are replacing or else it the animation won't work right or the thrust/exhaust will come from the wrong place,Its easy, you just have to compare the old with the new...

 

[Engine] <-------------------Must Match

ReferenceName=Pratt & Whitney PW1120

SystemType=JET_ENGINE

InputName=THROTTLE_CONTROL

EngineID=1 <-------------------------Must Match

HasAfterburner=TRUE

NumAfterburnerStages=6

SLThrustDry=60181.4

SLThrustWet=91562.0

ThrustAngles=0.0,0.0,0.0 <-------------------Must Match

ThrustPosition=0.00,-1.30,0.00 <-------------------Must Match

ThrottleRate=0.5

NozzleAnimationID=4 <-------------------Must Match

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=12

AltitudeTableDeltaX=1828.8

AltitudeTableStartX=0.0

AltitudeTableData=1.000,0.832,0.685,0.559,0.451,0.359,0.282,0.211,0.158,0.118,0.089,0.000

DryMachTableNumData=14

DryMachTableDeltaX=0.2

DryMachTableStartX=0.0

DryMachTableData=1.000,0.967,0.981,1.041,1.148,1.172,1.344,1.551,1.784,2.030,2.262,2.430,2.454,0.000

WetMachTableNumData=14

WetMachTableDeltaX=0.2

WetMachTableStartX=0.0

WetMachTableData=1.000,0.984,1.021,1.112,1.264,1.487,1.779,2.157,2.641,3.244,3.982,4.861,5.103,0.000

MaxInletTemperature=223.7

GyroscopicInertia=

TSFCM0=0.843

TSFCM1=1.260

AfterburnerTSFC=1.970

MinFuelFlow=0.01

ExhaustEmitterName=CleanExhaustEmitter

ExhaustPosition=0,-6.5,0.00 <-------------------Must Match

AfterburnerNodeName=BurnerOn <-------------------Must Match

AfterburnerEmitterName=F15AfterburnerEmitter

MinExtentPosition=-0.01,-0.1, 0.0 <-------------------Must Match

MaxExtentPosition= 0.01,-6,0.0 <-------------------Must Match

FireSuppression=TRUE

GasTempMaxRPM=678.0

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

 

 

For Example Heres my Engines in the MF Kurnass...

 

[Engine1]

ReferenceName=Pratt & Whitney PW1120

SystemType=JET_ENGINE

InputName=THROTTLE_CONTROL

EngineID=1

HasAfterburner=TRUE

NumAfterburnerStages=6

SLThrustDry=60181.4

SLThrustWet=91562.0

ThrustAngles=0.0,7.00,0.0

ThrustPosition=-0.65,-1.70,-0.50

ThrottleRate=0.5

NozzleAnimationID=7

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=12

AltitudeTableDeltaX=1828.8

AltitudeTableStartX=0.0

AltitudeTableData=1.000,0.832,0.685,0.559,0.451,0.359,0.282,0.211,0.158,0.118,0.089,0.000

DryMachTableNumData=14

DryMachTableDeltaX=0.2

DryMachTableStartX=0.0

DryMachTableData=1.000,0.967,0.981,1.041,1.148,1.172,1.344,1.551,1.784,2.030,2.262,2.430,2.454,0.000

WetMachTableNumData=14

WetMachTableDeltaX=0.2

WetMachTableStartX=0.0

WetMachTableData=1.000,0.984,1.021,1.112,1.264,1.487,1.779,2.157,2.641,3.244,3.982,4.861,5.103,0.000

MaxInletTemperature=223.7

GyroscopicInertia=

TSFCM0=0.843

TSFCM1=1.260

AfterburnerTSFC=1.970

MinFuelFlow=0.01

ExhaustEmitterName=CleanExhaustEmitter

ExhaustPosition=-0.65,-3.63,-0.58

AfterburnerNodeName=afterburner

AfterburnerEmitterName=F15AfterburnerEmitter

MinExtentPosition=-1.13,-3.68,-1.02

MaxExtentPosition=-0.14, 1.36,-0.04

FireSuppression=TRUE

GasTempMaxRPM=678.0

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]

ReferenceName=Pratt & Whitney PW1120

SystemType=JET_ENGINE

InputName=THROTTLE_CONTROL

EngineID=2

HasAfterburner=TRUE

NumAfterburnerStages=6

SLThrustDry=60181.4

SLThrustWet=91562.0

ThrustAngles=0.0,7.00,0.0

ThrustPosition=0.65,-1.70,-0.50

ThrottleRate=0.5

NozzleAnimationID=6

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=12

AltitudeTableDeltaX=1828.8

AltitudeTableStartX=0.0

AltitudeTableData=1.000,0.832,0.685,0.559,0.451,0.359,0.282,0.211,0.158,0.118,0.089,0.000

DryMachTableNumData=14

DryMachTableDeltaX=0.2

DryMachTableStartX=0.0

DryMachTableData=1.000,0.967,0.981,1.041,1.148,1.172,1.344,1.551,1.784,2.030,2.262,2.430,2.454,0.000

WetMachTableNumData=14

WetMachTableDeltaX=0.2

WetMachTableStartX=0.0

WetMachTableData=1.000,0.984,1.021,1.112,1.264,1.487,1.779,2.157,2.641,3.244,3.982,4.861,5.103,0.000

MaxInletTemperature=223.7

GyroscopicInertia=

TSFCM0=0.843

TSFCM1=1.260

AfterburnerTSFC=1.970

MinFuelFlow=0.01

ExhaustEmitterName=CleanExhaustEmitter

ExhaustPosition=0.65,-3.63,-0.58

AfterburnerNodeName=afterburner

AfterburnerEmitterName=F15AfterburnerEmitter

MinExtentPosition=1.13,-3.68,-1.02

MaxExtentPosition=0.14, 1.36,-0.04

FireSuppression=TRUE

GasTempMaxRPM=678.0

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

 

 

Another thing to think of is the [FlightControl] section of the Data.ini, Without Adjustments it will still limit the aircrafts Speed,This is what i'm using on the Kurnass 2000,but i'm still tweaking it...

 

[FlightControl]

StallSpeed=70.72

CruiseSpeed=272.61 <------Adjust

ClimbSpeed=560.32 <------Adjust

CornerSpeed=263.85 <------Adjust

MaxG=8.50

MaxSpeedSL=397.57 <------Adjust

MachLimit=2.45 <------Adjust

PitchDamper=0.4

RollDamper=0.2

YawDamper=0.0

GunBoresightAngle=-2

RocketBoresightAngle=-5

 

Its a great engine, I am thinking of trying them in a Eagle to see how much better it would perform.

 

EDIT: BTW Heres the Flight Control I'm using for the Lavi...

 

[FlightControl]

StallSpeed=59.79

CruiseSpeed=231.5

ClimbSpeed=260.60

CornerSpeed=200.6

MaxG=9.00

MaxSpeedSL=324.8

MachLimit=2.2

PitchDamper=1.25

RollDamper=0.65

YawDamper=0.45

SideslipDamper=0.55

GunBoresightAngle=0

RocketBoresightAngle=0

Edited November 2, 2008 by WarlordATF

[+76.IAP-Blackbird 3,557]

Thanks, will create a testplane for those entries.

[Icarus999 70]

the P&W 1120 was a bad A** little engine that while quite a bit smaller and lighter than the J-79 had much better performance and fuel economy, the F-4's performance was so markedly improved

with these engines that Mcdonnell douglass did everything in their power to kill the f-4 upgrade program- twice- first in 1984 when Boeing/P&W first developed the super phantom for the USAF as a way to upgrade Reserve and ANG phantoms, as well as the export market. Then again a few years later when Israel developed the kurnass 2000. The super phantom was seen as a serious threat to sales

of the F-18/ F-15, as many nations who already operated the F-4 may have very well chosen to buy a few less f-15's and put the savings into upgrading the Phantoms they already owned.

 

I remember a thread a while back about editing out parts of aircraft and editing in replacments. It was f-4 pylons if I remember right but it was applied to the Mirage Factory kurnass to remove the

refuling probe... in order to get a standard f-4E with TIESO. Well I wonder how hard it would be to replace the J-79 cans with 1120's using that method if we had an animated model of the P&W1120 cans?

 

just a thought...

[+76.IAP-Blackbird 3,557]

This can`t be done you have to remodell the original core file of the F-4E without it you can have unanimated cans that`S all.