Through its Nexcelle joint venture with Safran Nacelles, Middle River Aerostructure Systems has a key role in the nacelle system for CFM International’s LEAP-1C turbofan engine, which powers the COMAC C919 jetliner.
The LEAP-1C is the first truly integrated propulsion system (IPS) in its thrust category, and MRAS contributes its design, development and production expertise in realizing the IPS advantages – including optimized weight, improved operational efficiency and facilitated maintenance.
fast fact
The C919 jetliner was issued its airworthiness type certification in
September 2022
by the Civil Aviation Administration of China (CAAC)
MRAS responsibility on the LEAP-1C involves the nacelle’s inlet, fan cowls, inner fixed structure and engine mounts. The MRAS-designed single-piece aluminum inlet lip is the largest of its kind to enter production on a large commercial jet engine – contributing to the nacelle’s low-drag front end, improving airflow and lower noise levels.
The fan cowl module is designed at the GE China Technology Center (CTC) in Shanghai under Middle River Aerostructure Systems responsibility, underscoring MRAS’ international reach.
MRAS has personnel located in Shanghai, ensuring continuous on-site support for LEAP-1C nacelle build-up and podding with the engine, which occurs at COMAC’s assembly facility adjacent to Shanghai Pudong International Airport. Personnel from MRAS also supported the jetliner’s flight test activities at other locations in China.
