A320neo LEAP-1A nacelle
Safran Nacelles has the complete responsibility for the design, painting and integration of nacelles on the A320neo powered by LEAP-1A engines.
  • Robust and reliable: technologies benefiting from all the experience from the A320, A330, A340 and A380
  • Light weight : extensive use of composite materials
  • Acoustically efficient, high performance: aerodynamic design and acoustic treatment
  • Optimized production facilities: automation and innovative test/inspection systems
  • Easy maintenance: criterion taken into account from the design phase on, based on feedback
Fan cowls
Safran Nacelles
Fan cowls protect the engine and its accessories. The A320neo fan cowls are made of composite materials.
Exhaust system
Safran Nacelles
Composed of the nozzle and the rear cone, the exhaust system serves to channel hot gases exiting the engine.
Air inlet
Airbus (France)
The air inlet channels the air flow coming into the engine. It contributes to noise alleviation of the nacelle and is equipped with a deicing system that uses hot air from the engine.
Engine build-up (EBU) includes various components: electrical harnesses, tubes and valves, which enable fuel circulation, air inlet deicing, fire detection, power supply, etc.
Thrust reverser
Safran Nacelles / MRAS
Thrust reversal consists in redirecting part of the air flow going through the engine, in order to create a counter-thrust that slows down the aircraft. It is used during landing to reduce braking distance, mainly on wet, icy or snowy landing strips. The A320neo uses cascade-type thrust reverser technology: the mobile part of the thrust reverser slides to the back, uncovering the cascade vanes and pivoting the panels in the air flow. The secondary flow is then deviated by the panels towards the cascade vanes, thus reversing the thrust.
A jet engine's jewel case
The nacelle surrounds the engine and channels air flows: the primary flow (air entering the compressor to be burned in the combustion chamber, then released via the nozzle) and the secondary flow (air flowing between the engine and the inside of the nacelle). It protects the engine equipment and manages temperature deviations (down to -50°C outside the nacelle and up to +500°C inside).
Help for braking
The thrust reverser plays an essential role during landing. When activated, it reverses the flow of air in the engine, thus creating counter-thrust, which slows down the aircraft. The thrust reverser helps the aircraft to brake on wet, icy or snowy landing strips. It also helps to reduce wear on the brakes, and to decrease landing distance.
Reduce noise emissions
The nacelle greatly helps to reduce engine noise, thanks to the use of composite materials and acoustic treatment applied on its inner panels. Composite materials represent 60% of the COMAC C919 jetliner's nacelle (by mass). This helps reduce the engine's noise emissions by 50%.
Safran Nacelles designs and achieves the integration of all nacelle components and the EBU (Engine Build-Up) into the engine, all the way to final adjustments between the nacelle, the engine and the pylon (by which it is attached under the aircraft's wing). Based on its expertise with nacelle components – from bizjets (Falcon 7X, Falcon 8X, Superjet 100) to mainline jetliners (A380, A330, A320neo) – the integration activity is optimized to guarantee EBU completion and assembly of nacelle components as quickly as possible.
Tailor-made assistance
Safran Nacelles supports A320neo customers in operating their nacelles, with highly responsive after-sales support (servicing in the event of aircraft-on-ground/AOG situations, 24/7 call centers) and a complete range of custom services (advice, technical support, spare parts or nacelles, comprehensive planned and unplanned maintenance solutions). These activities rely on a global network of technical representatives, support managers and regional sales managers. They involve four distribution centers and five repair shops in the USA, Europe, the Middle East and Asia.
Tailor-made assistance
Optimised access to the engine
The C919 O-Duct thrust reverser facilitates maintenance operations, while enabling optimal access to the engine equipment, thanks to use of standard tools.
Thrust reverser with a fixed, independent, line-replaceable structure (LRU)
The O-Duct thrust reverser attached to the pylon has the advantage of having a fixed, independent structure that can be directly replaced under the aircraft wing, like any LRU (Line Replaceable Unit). This architecture ensures quick return to service for the thrust reverser in case of damage, thus avoiding replacement of the part integrating the thrust reverser system (TRAS).
The E-TRAS (Electrical Thrust Reverser Actuation System) replaces the older generation of hydraulic actuation systems in thrust reversers, and offers the following advantages: simplified design, mass reduction, simplified maintenance, and elimination of corrosive hydraulic fluids.