CW

Compression work (unit: kJ)

DP

Design-point

EW

Expansion work (unit: kJ)

FPT

Free power turbine

FPTW

Free power turbine work

GT

Gas turbine

HP

High pressure

HPC

High pressure compressor

HPCW

High pressure compressor work

HPT

High pressure turbine

HPTW

High pressure turbine work

IC

Intercooled cycle

ICR

Intercooled/recuperated

Inter

Intercooler

ISA

International standard atmosphere

ISA Dev

International standard atmosphere deviation

LP

Low pressure

LPC

Low pressure compressor

LPCW

Low pressure compressor work

LPT

Low pressure turbine

OD

Off-design point

OEM

Original equipment manufacturer

OPR

Overall pressure ratio

PR

Pressure ratio

SC

Simple cycle

SLS

Sea level static

TET

Turbine entry temperature (unit: K)

TURBOMATCH

Gas turbine engine performance model code

USAF

United State Air Force

c

Specific heat (unit: kJ/kg)

cp

Specific heat at constant pressure (unit: kJ/kg)

H

Specific enthalpy (unit: kJ/kg)

P

Total pressure (unit: N/m2)

Q

Heat flow (unit: kW)

qin

Heat flow in (unit: kW)

qout

Heat flow out (unit: kW)

S

Entropy (unit: kJ/kgK)

SFC

Specific fuel consumption (unit: kg/MWs)

T

Total temperature (unit: K)

Greek letters

η

Efficiency (unit: %)

ηth

Thermal efficiency (unit: %)

ηc

Compressor isentropic efficiency (unit: %)

ηT

Turbine isentropic efficiency (unit: %)

Subscripts

P

At constant pressure

Th

Thermal

In

Inlet

Out

Outlet

Regen

Regeneration

1, 2, 3, 4, 5, 6, 7, i

Engine components station numbers