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J57-420 and J79-IAI
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Because I wanted to
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Capkirk123 committed Mar 9, 2024
1 parent 4237118 commit 36aad8f
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// Exhaust Mixer: false
// Adjustable Nozzle: true
// =================================================================================
// J57-P-420
// 1967, F-8H/J, RF-8G
//
// Dry Mass: 2195 kg
// Thrust (Dry): 55.2 kN
// Thrust (Wet): 87.2 kN
// SFC (Dry): 0.87 lb/lbf-hr
// Area: 0.24 m^2 //Compressor Area
// BPR: 0.0 //Bypass Ratio
// CPR: 13.0 //Compressor Pressure Ratio
// FPR: 0.0 //Fan Ratio
// Mdes: 0.9 M //Mach Design Point
// Tdes: 250 K //Temp Design Point
// eta_n: 0.7 //Efficiency at afterburner rear / nozzle entrance
// FHV: 35000000 J //Fuel heat of burning
// TIT: 1330 K //Combustion peak temp
// TAB: 2556* K //Afterburner peak temp
// maxT3: 825 K //Turbine max temperature
// Exhaust Mixer: false
// Adjustable Nozzle: true
// =================================================================================

// Sources:

// https://www.jet-engine.net/miltfspec.htm
// https://en.wikipedia.org/wiki/Pratt_%26_Whitney_J57
// https://www.thisdayinaviation.com/tag/pratt-whitney-jt3c-6/
// https://aircorpslibrary.com/jt3c-4-and-jt3c-6/
// https://www.marvellouswings.com/Aircraft/Fighter/F-8/F-8.html
// https://www.aerosociety.com/media/8037/an-examination-of-the-f-8-crusader-through-archival-sources.pdf
// https://www.tapatalk.com/groups/warships1discussionboards/if-no-phantom-upgrade-what-to-operate-from-audacio-t31193.html

// Used by:

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CONFIG
{
name = J57-P-20A
description = Ultimate afterburning J57, as used on the F-8E/J. Temperature Mach limit at 15 km: 2.5.
description = Afterburning J57, as used on the F-8E/J. Temperature Mach limit at 15 km: 2.5.
massMult = 1.00

Area = 0.24 //Compressor Area
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drySFC = 0.77
throttleResponseMultiplier = 0.3 //60s double-spool, 0.3

PROPELLANT
{
name = Kerosene
ratio = 1.0
DrawGauge = True
}
}
CONFIG
{
name = J57-P-420
description = Ultimate afterburning J57, remanufactured J57-P-20 as used on upgraded F-8H/J. Temperature Mach limit at 15 km: 2.58.
massMult = 1.0186

Area = 0.24 //Compressor Area
BPR = 0 //Bypass Ratio
CPR = 13.0 //Compressor Pressure Ratio
FPR = 0 //Fan Ratio
Mdes = 0.9 //Mach Design Point
Tdes = 250 //Temp Design Point
eta_c = 0.95 //Efficiency at burner inlet
eta_t = 0.98 //Efficiency at burner exit
eta_n = 0.7 //Efficiency at afterburner rear / nozzle entrance
FHV = 35000000 //Fuel heat of burning (joules?)
TIT = 1330 //Combustion peak temp
TAB = 2556 //Afterburner temp?
maxT3 = 850 //Turbine max temperature
exhaustMixer = False
adjustableNozzle = True
thrustUpperLimit = 170

// Engine fitting params
defaultTPR = 0.85
dryThrust = 55.2
wetThrust = 87.2
maxThrust = 87.2 //Just to let MEC know thrust
drySFC = 0.87
throttleResponseMultiplier = 0.3 //60s double-spool, 0.3

PROPELLANT
{
name = Kerosene
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//
// Dry Mass: 1745 kg
// Thrust (Dry): 53.60 kN
// Thrust (Wet): 82.29 kN
// Thrust (Wet): 83.29 kN
// SFC (Dry): 0.834 lb/lbf-hr
// Area: 0.29 m^2 //Compressor Area
// BPR: 0.0 //Bypass Ratio
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// Exhaust Mixer: false
// Adjustable Nozzle: true
// =================================================================================
// J79-IAI-J1E
// 1982, Kfir C.7
//
// Dry Mass: 1740? kg
// Thrust (Dry): 49.4 kN
// Thrust (Wet): 83.4 kN
// SFC (Dry): 0.843? lb/lbf-hr
// Area: 0.29 m^2 //Compressor Area
// BPR: 0.0 //Bypass Ratio
// CPR: 12.2 //Compressor Pressure Ratio
// FPR: 0.0 //Fan Ratio
// Mdes: 0.9 M //Mach Design Point
// Tdes: 250 K //Temp Design Point
// eta_n: 0.7 //Efficiency at afterburner rear / nozzle entrance
// FHV: 28000000 J //Fuel heat of burning
// TIT: 1261? K //Combustion peak temp
// TAB: 2767* K //Afterburner peak temp
// maxT3: 850 K //Turbine max temperature
// Exhaust Mixer: false
// Adjustable Nozzle: true
// =================================================================================

// Sources:

// http://www.leteckemotory.cz/motory/j79/
// https://www.jet-engine.net/miltfspec.htm
// http://paulcegelski.com/j79.html

// Used by:

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// Engine fitting params
defaultTPR = 0.85
dryThrust = 53.60
wetThrust = 82.29
maxThrust = 82.29 //Just to let MEC know thrust
wetThrust = 83.29
maxThrust = 83.29 //Just to let MEC know thrust
drySFC = 0.834
throttleResponseMultiplier = 0.60

PROPELLANT
{
name = Kerosene
ratio = 1.0
DrawGauge = True
}
}
CONFIG
{
name = J79-IAI-J1E
description = License-built J79, created by IAI for the Kfir C.7. Temperature Mach limit at 15 km: 2.75.
specLevel = operational
massMult = 1.1538

Area = 0.29 //Compressor Area
BPR = 0.0 //Bypass Ratio
CPR = 12.2 //Compressor Pressure Ratio
FPR = 0.0 //Fan Ratio
Mdes = 0.9 //Mach Design Point
Tdes = 250 //Temp Design Point
eta_c = 0.95 //Efficiency at burner inlet
eta_t = 0.98 //Efficiency at burner exit
eta_n = 0.7 //Efficiency at afterburner rear / nozzle entrance
FHV = 28000000 //Fuel heat of burning (joules?)
TIT = 1261 //Combustion peak temp
TAB = 2767 //Afterburner temp?
maxT3 = 850 //Turbine max temperature
exhaustMixer = False
adjustableNozzle = True
thrustUpperLimit = 160

// Engine fitting params
defaultTPR = 0.85
dryThrust = 49.4
wetThrust = 83.4
maxThrust = 83.4 //Just to let MEC know thrust
drySFC = 0.843
throttleResponseMultiplier = 0.60

PROPELLANT
{
name = Kerosene
Expand Down

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