As China’s well-funded push to build up its aero-engine industry gathers strength, details are emerging of new aviation powerplants in early development. Three of these—a turboprop, turboshaft and turbofan—form a family built on a common core, a cost-effective development practice that the Western industry now rarely uses. Two others, turbofans for commercial aircraft, are based on the common approach of scaling turbo machinery up or down to meet different thrust ...


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