The needle began to drop. The vibration smoothed out. The turbine was still spinning, the blades were still intact, and the data was streaming onto his monitor.

The title says "Gas Turbines," but the "hot" future is hybrid. A gas turbine runs at optimal temp to charge batteries, then the electric motor provides peak thrust. Kerrebrock’s cycle analysis (Brayton cycle) is still used to calculate the "heat rate" for these hybrids.

While there are unofficial PDFs circulating on academic sharing sites (like Library Genesis or Academia.edu), these often come with problems: