Aircraft engines have always been expensive, and at the leading edge of performance—military engines even more so. As the performances increased, so has the cost, with the engines increasing in complexity, part count and in the sophistication of the metallurgy and materials used in their construction. Performance is an order of magnitude better than at the dawn of the jet age. But when adjusted for inflation, are modern power plants more expensive?
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For all 119 years of the history of aviation, all powered flight has had one thing in common: expensive engines.
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