The very poorly attested WS118 high-thrust turbofan is said to be a high bypass ratio engine using the WS10A as the core. With a thrust 12.0T, it is said to be intended for the Y20 military transport Canal and the C919 large passenger plane.
China is developing four high-bypass turbofans, only one of which were well known prior to 2013. All four have potential military and civil applications. Work at 30,000 lb. class and suitable for large transport aircraft was already known, along with development of the similarly sized CJ-1000 engine for the C919 commercial aircraft. But it turns out that there are two such engines from the Shenyang design bureau of Avic Engine: the WS-118 and the SF-A. This was revealed in materials prepared for a 22-23 May 2013 conference organized by Galleon (Shanghai) Consulting in association with Avic. The Avic connection means the conference materials can be taken as semi-official. Both engines from the Shenyang Engine and Design Research Institute are based on fighter-engine cores, just as Western aircraft in the 1970s often used combat cores.
The 26,500-lb.-thrust WS-118 is based on the WS-10A Taihang core, which powers the J-10 and J-11B fighters, according to a document prepared for the China Aerospace Propulsion Technology Summit. Avic Engine's Shenyang Liming Aero-Engine group was scheduled to begin manufacturing it in 2015. The WS-118 is a candidate for the Y-20 military airlifter and Comac's C919 airliner, Galleon reports, although it is likely to be underpowered for the Y-20 and too inefficient for the C919.
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