JET Engine ini Questions

[+76.IAP-Blackbird 3,557]

Hi guys, I need some ini Entries for a Jetengine for a plane that can accelarete upt to Mach 5 or something simliar, without blowing up.

 

The bird has 3 of them. I started with the FM and entries of a Mirage3C and here is one entry of one engine:

 

[Engine]

ReferenceName=Snecma ATAR 9B

SystemType=JET_ENGINE

InputName=THROTTLE_CONTROL

EngineID=1

HasAfterburner=TRUE

NumAfterburnerStages=4

SLThrustDry=42080.00

SLThrustWet=58840.00

ThrustAngles=0.0,0.0,0.0

ThrustPosition=0.0,0.0,0.0

ThrottleRate=0.4

NozzleAnimationID=2

// idle 2910 t/min - 

IdleThrottle=0.10

IdleRPM=0.35

IdleNozzle=1.00

// cruse 7300

CruiseThrottle=0.37

CruiseRPM=0.82

CruiseNozzle=0.0

// Max sec : 8450

MilThrottle=0.65

MilRPM=0.90

MilNozzle=0.25

// mini PC : 8450

MaxThrottle=0.78

MaxRPM=0.95

MaxNozzle=0.5

// Max PC : 8450

FullABThrottle=1.12

FullABRPM=1.00

FullABNozzle=1.00

 

AltitudeTableNumData=10

AltitudeTableDeltaX=3048.0

AltitudeTableStartX=0.0

AltitudeTableData=1.000,0.771,0.604,0.484,0.396,0.353,0.302,0.025,0.000,0.000

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=78.0

 

GyroscopicInertia=

TSFCM0=0.843

TSFCM1=1.260

AfterburnerTSFC=1.970 

MinFuelFlow=0.01

ExhaustEmitterName=CleanExhaustEmitter

ExhaustPosition=0.0,-3.512,1.026

ExhaustEffectSize=0.8

AfterburnerNodeName=Afterburnerplate

AfterburnerEmitterName=AfterburnerEmitter2

AfterburnerEffectSize=1.8

MinExtentPosition=-0.5, -1.4,-0.552

MaxExtentPosition= 0.5,-2.8, 0.552

FireSuppression=TRUE

 

GasTempMaxRPM=1720.0

GasTempIdleRPM=620.0

GasTempChangeRate=5.0

OverheatTemp=1780.0

DamageTempDelta=2800.0

OilPressMaxRPM=35.0

OilPressIdleRPM=55.0

OilPressChangeRate=0.5

LowOilPress=12.0

LowOilTempDelta=400.0

 

Every the bird explode during flight at Mach 1.38, so I thought I will set the temperatures a bit higher so the engine will be damaged somewhere over the standart parameters. Strange thing is now, the bird explodes even earlier...

Who can give me a hin what entries I could use?

 

best regards

 

Martin

Edited November 18, 2013 by 76.IAP-Blackbird

[+RAVEN 414]

MaxInletTemperature=78.0 ?

[Toryu 156]

78°C is a bit cold for the CIT, indeed.

 

As a reference: The F-104 has a max. allowed inlet-temp. of 120°C.

[KJakker 902]

Have you looked at the engines of the B-70 and the F-103A? Both are Mach 3 aircraft and might help you determine what is wrong with your engines.

[+ianh755 196]

It's the max inlet temp thats the most important for engine damage. My Mach 4 "Testbed" (BAE Hawk ) used a max inlet temp of 2000'c without blowing up even though the Engine damage temps were still set to only 500-600'c so the higher the better!

 

[+76.IAP-Blackbird 3,557]

Thanks will test the inlet temperature, and report

[+Spillone104 553]

Besides inlet temperature that prevent the engine to explode there are 2 other factors that will permit your engine to go to Mach 5. Dry and WetMachTable.
 

DryMachTableNumData=4  This is how many segment or curves we.

DryMachTableDeltaX=0.4  Every 0.4 mach in this case

DryMachTableStartX=0.0  Starts from 0.0 mach.

DryMachTableData=1.000,0.980,1.172,0.000  At 0.0 mach the thrust is 100% of the value stated above in Newton. Then is 98% and so on...

WetMachTableNumData=7  Same things as above but in afterburning regime.

WetMachTableDeltaX=0.4

WetMachTableStartX=0.0

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

[+76.IAP-Blackbird 3,557]

I am absolutly no ini guys, I have now simply copy paste the F-104 engines into my model, changed the exhaust position and put

 

DryMachTableNumData=2

 

WetMachTableNumData=2

 

There are 20 segments at all

 

The plane simply destroyes the engines directly at mission start?