Learn: Second-Law Analysis for Jet Engines
Short, practical engineering guides written by the ExergyJet team — the same methods that power the analyzer.
What Is Exergy Analysis? A Jet Engine Perspective
First-law efficiency tells you how much you're losing. Exergy analysis tells you where — component by component. The foundation guide.
Turbojet vs Turbofan Efficiency: A Second-Law Comparison
Why the turbofan won, quantified through exergy rather than marketing brochures.
Exergy Destruction in Gas Turbine Components
Why the combustor is the biggest exergy destroyer — and what design choices reduce it.
Physical vs Chemical Exergy Explained
The two halves of flow exergy, the fuel grade function, and why jet fuel is nearly pure work potential.
TSFC Explained: Thrust Specific Fuel Consumption for Jet Engines
The formula, typical values, the static-vs-cruise trap — and what TSFC hides that exergy analysis reveals.
Afterburner Exergy Analysis: What Reheat Really Costs
Reheat buys thrust with the most expensive fuel in the engine. The exergy balance shows exactly how expensive.
Compressor Pressure Ratio vs Thermal Efficiency: The Brayton Trade-Off
Why OPR climbed from 5 to 60, the two different "optimum" pressure ratios, and the exergy reason higher pressure works.
Turbine Inlet Temperature Limits: How Hot Can a Jet Engine Run?
Gas at 1900 K flowing over metal that melts at 1600 K — the materials, cooling and chemistry walls, and the exergy price of cooling air.
Why the Exhaust Plume Wastes Exergy: The Jet You Pay For and Never Use
Kinetic, thermal and pressure exergy dumped into the sky — propulsive efficiency, plume mixing, and why the turbofan exists.
Convergent vs Convergent-Divergent Nozzles: Choking, Expansion and Thrust
Why a convergent nozzle stops at Mach 1, how the de Laval nozzle goes supersonic, and what imperfect expansion costs.