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Create JTF17 Config #3002

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Sep 15, 2024
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// ==================================================
// Engine: JTF17A
//
// Manufacturer: P&W
//
// =================================================================================
// JTF17A-21L
// 1973, L-2000
//
// Dry Mass: 4648 kg
// Thrust (Dry): 169.6 kN
// Thrust (Wet): 270.2 kN
// SFC (Dry): 0.75 lb/lbf-hr
// Area: 0.9 m^2 //Compressor Area
// BPR: 1.3 //Bypass Ratio
// CPR: 13.0 //Compressor Pressure Ratio
// FPR: 2.87? //Fan Ratio
// Mdes: 1.0 M //Mach Design Point
// Tdes: 280 K //Temp Design Point
// eta_n: 0.9 //Efficiency at afterburner rear / nozzle entrance
// FHV: 36000000 J //Fuel heat of burning
// TIT: 1533 K //Combustion peak temp
// TAB: 1683 K //Afterburner peak temp
// maxT3: 1100 K //Turbine max temperature
// Exhaust Mixer: true
// Adjustable Nozzle: true
// =================================================================================

// Sources:

// https://ntrl.ntis.gov/NTRL/dashboard/searchResults/titleDetail/AD804528.xhtml
// https://www.airliners.net/forum/viewtopic.php?t=748369
// https://en.wikipedia.org/wiki/Lockheed_L-2000

// Used by:

// Notes:

// ==================================================
@PART[*]:HAS[#engineType[JTF17]]:FOR[RealismOverhaulEngines]
{

%title = #roJTF17Title //JTF17 Low-Bypass Turbofan
%manufacturer = #roMfrPW
%description = #roJTF17Desc

@tags ^= :$: usa pratt & whitney p&w jtf17a-20l jtf-17 afterburning turbofan

%specLevel = prototype //operational, prototype, concept, speculative, altHist, sciFi

@MODULE[ModuleEngines*]
{
@name = ModuleEnginesAJEJet
%EngineType = Turbine
@PROPELLANT[LiquidFuel]
{
@name = Kerosene
}
}
@MODULE[ModuleAlternator]
{
@RESOURCE[ElectricCharge]
{
%rate = 100.0
}
}

!MODULE[ModuleGimbal]{}

MODULE
{
name = ModuleEngineConfigs
type = ModuleEnginesAJEJet
configuration = JTF17A-21L
modded = false
origMass = 4.648

CONFIG
{
name = JTF17A-21L
description = JTF17A afterburning turbofan, intended to power the L-2000. Temperature Mach limit at 15 km: 3.52.
specLevel = prototype
massMult = 1.00

Area = 0.9 //Compressor Area
BPR = 1.3 //Bypass Ratio
CPR = 13.0 //Compressor Pressure Ratio
FPR = 2.87 //Fan Ratio
Mdes = 1.0 //Mach Design Point
Tdes = 280 //Temp Design Point
eta_c = 0.95 //Efficiency at burner inlet
eta_t = 0.98 //Efficiency at burner exit
eta_n = 0.9 //Efficiency at afterburner rear / nozzle entrance
FHV = 36000000 //Fuel heat of burning (joules?)
TIT = 1533 //Combustion peak temp
TAB = 1683 //Afterburner temp?
maxT3 = 1100 //Turbine max temperature
exhaustMixer = True
adjustableNozzle = True
thrustUpperLimit = 550

// Engine fitting params
defaultTPR = 0.85
dryThrust = 169.6
wetThrust = 270.2
maxThrust = 270.2 //Just to let MEC know thrust
drySFC = 0.75
throttleResponseMultiplier = 0.60

PROPELLANT
{
name = Kerosene
ratio = 1.0
DrawGauge = True
}
}
}
}
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