Nexcelle nacelle system certified for COMAC C919 jetliner

The recent certification of the LEAP-1C engine and its Nexcelle-developed nacelle system marks a key milestone for the Safran/General Electric joint venture in pioneering a new generation of integrated propulsion systems.

The CFM International LEAP-1C will power China´s COMAC C919 jetliner, and includes the first use of Nexcelle´s innovative O-Duct thrust reverser system — which reduces weight, increases thrust reverser efficiency and facilitates engine maintenance.

Certification of the LEAP-1C to CS-E/Part 33 airworthiness standards was signed December 21 in Cologne, Germany by the European Aviation Safety Agency (EASA) and the US Federal Aviation Administration (FAA).

The LEAP-1C´s composite O-Duct thrust reverser was developed by Safran Nacelles, with its unique one-piece configuration contributing to a reduced overall structural weight. The design also removes the flowpath bifurcation of two-piece D-Duct designs found in traditional thrust reversers, thereby increasing thrust reverser efficiency.

Headquartered in Cincinnati, Ohio, USA, Nexcelle is a 50/50 joint venture of Safran Nacelles and Middle River Aircraft Systems (MRAS), which are leading suppliers of engine nacelles, thrust reversers and aerostructures. Through Nexcelle´s relationship with CFM International, GE Aviation and Safran, the joint venture brings unparalleled expertise in the design, development, production and support of integrated propulsion systems for a wide range of aircraft.