During the Zhuhai Airshow 2022，COMAC exhibitedCAircraft 919。Liebherr has developed and produced the main systems for this short and medium range commercial aircraft.——Integrated Air Management System (AMS) And a landing gear system (LGS)，And provide related services。

Air Management System (AMS)

Air management system is an important system.，It ensures the comfort and safety of flight.。It is composed of several main subsystems.，Includes a gas source、Air conditioner、Cabin pressure control and anti-ice system。The air supply system draws approximately 200 from the medium or high pressure stage of the engine compressor°CHot air，And adjust the appropriate pressure、Flow and temperature。The wing anti-ice system directs hot air from the bleed air to the wing leading edge for de-icing on command，To ensure that the geometry of the wing。Air conditioning cools the hot air to a comfortable temperature.，The air is then delivered to the cockpit.、Cabin、Avionics bay and cargo bay，To maintain a good flow of fresh air、Temperature，And cooperate with the cabin pressure control system to maintain the proper cabin pressure。

  

Liebherr cooling system

Landing gear is an indispensable system in an aircraft.，Start at the gate for the plane.，Taxi to the runway，Safe take-off and landing escort。The landing gear system includes a landing gear structure.、Stretch/Retracting and steering drive、Location and warning system、Integration of wheels and brakes and associated sensors and controls，Includes cockpit controls。When the plane is on the ground，Landing gear ensures taxiing capability。During the flight，The undercarriage retracts into its bay to reduce drag.。At the stage of approaching the ground，The landing gear is deployed。When landing on the ground，The shock strut absorbs the impact force to protect the aircraft structure and provide a comfortable landing for the passengers。

  

C919 main landing gear

Liebherr also works for COMAC.ARJ21 Aircraft development、Production air management system and landing gear system，And provide related services。

  

ARJ21 landing gear

Liebherr-Air Toulouse（France）Liebherr's Air Management System Competency Center，Provide integrated air management system and high and low pressure pipelines for the aircraft。As Liebherr's flight control.、Capability Center for Actuation Systems and Landing Gear Systems，Liebherr Airlines-Lindenberg（Germany）Company，Responsible for the development and manufacture of landing gear systems。

In order to better support and serve Chinese airlines,，Liebherr offers training through its Liebherr Aviation Service Centre in Shanghai，And constantly improve themselves.MROAbility。