Why Jet Engines Aren’t “Made In China” - by Aakash Japi

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Why Jet Engines Aren’t “Made In China”<br>What China’s jet engine program tells us about the limits of industrial policy

Aakash Japi<br>May 12, 2026

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General Electrics’s GE9X, the engine powering the Boeing 777X, under construction.<br>In my recent article contrasting Chinese dynamism with American sloth, I described how the Chinese state-capitalist system has an unusual tolerance for social disruption, which, when paired with prescient leadership, enables massive societal uplift. Many of the comments, however, extrapolated this observation about state capacity into prophecies of inevitable American decline that I did not intend to imply. Perhaps the slight polemical detour gave some of the audience license to veer towards doomerism.<br>So let’s be clear: this is an incorrect assumption. A united Western alliance possesses many structural advantages the Chinese state will struggle to replicate. Instead, I think China-hysteria is largely just a belated overcorrection. After two decades disparaging the idea that any other power could pose a challenge to Western hegemony, we’re now astounded by the very existence of competition.<br>But this overreaction blinds us to nuance. China is not a national wunderkind: it is a technologically-advanced state that has an extraordinary capability to marshal national resources. Most of its successes involve utilizing this advantage to scale a mature technology, become its dominant provider, and use the synergies that affords to expand horizontally and vertically. This strategy finds success in some industries but meets with failure in others.<br>The pattern of where it fails is informative.<br>One illustrative example of failure is in jet engines. China has tried and failed for some fifty years to produce military and commercial jet engines at parity with the West. Why did it fail? Because, as I explore below, jet engines are almost uniquely designed to expose the weaknesses in the Chinese system. They’re a low-margin market focused on long-term reliability where manufacturing quality and consistency are paramount. Iteration speed is very slow and there’s a pervasive, internationally enforced, regulatory barrier for every finished product. These together neutralize the usual Chinese advantages in skilled labor, capital, and speed-to-scale. They also prevent traditional domestic protectionism from adding much value.<br>Analyzing the Chinese failure to produce viable jet engines gives us important lessons about the nature of the West’s remaining comparative advantage.<br>The Tanzimat Diaries is a Substack about political economy, state capacity, and why societies choose the trajectories they do. Subscribe to get essays like this in your inbox.

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Turbine Blades As A Microcosm

A high-pressure turbine blade in a modern jet engine is expected to sit in gas hotter than lava, rotating faster than the maximum redline of a Formula One engine, while sustaining a consistent centrifugal load heavier than a Ford Focus. And it’s expected to do this without stretching, melting, or cracking for 30,000 hours—about 4 years—of continuous flying time. A failure in these blades would be catastrophic, resulting in the destruction of the engine, likely followed by the plane itself.<br>Achieving these requirements has made it one of the most complex manufacturing outputs in the world. The initial challenge comes from fabricating the material.<br>Frank Whittle’s first jet engines used Nimonic-75: a nickel-chromium-titanium alloy that crept (i.e. elongated under stress) over 700C, with a service lifespan of only for tens of hours. The breakthrough came in the late 1940s, when a British metallurgist realized that adding more titanium and some aluminum produced dramatic strengthening. This yielded Nimonic-80A, which is the base of every subsequent superalloy. Each subsequent generation then added new elements to the mix to solve the previous generation’s failure modes. Second-generation alloys added rhenium for creep resistance, a metal so rare its annual world production is fifty tons. Third-generation alloys doubled the rhenium content, which improved temperature capability but created brittleness under load, so the most recent iteration adds ruthenium, an ever rarer metal only produced as part of South African platinum mining.<br>The other major challenge is casting. Molten metals do not cool uniformly. Instead, different parts of the metal solidify at the same time, and these simultaneous solidification processes form multiple crystals in the final solid. These crystals meet at grain boundaries. Historically, the most common failure mode for a turbine blade is a fissure along these grains. To mitigate this, the modern turbine blade is cast using the single-crystal method. Developed in the 1980s, this method maintains a uniform temperature gradient along the molten metal’s surface to pull solidification in...