Lilium has selected leading aerospace component manufacturer Aernnova to collaborate on the design of its propulsion mounting system.

A propulsion mounting system or flap structure that forms the rear part of the wings and front aerofoils is one of the Lilium Jet’s major components, producing lift by interacting with airflow from the engine. It also houses the propulsion and vectoring systems responsible for vertical and horizontal flight.

Integrating electric jet engines into the wing flaps provide advantages in payload, aerodynamic efficiency and a lower noise profile, while also providing thrust vector control to manoeuver the Lilium Jet through every phase of flight.

Aernnova, one of the largest Tier 1 aerospace suppliers providing aerostructure for companies such as Airbus, Boeing and Embraer, will work with Lilium on the design, manufacture, and supply of the flap structure.

The collaboration represents a significant step towards serial production of the Lilium Jet and its modular and scalable propulsion mounting system will utilise lightweight material such as carbon fibre-reinforced epoxy.

Lilium chief operating officer Yves Yemsi said: “Aernnova is an industry leader for customised design and manufacture of metallic and composite assemblies, and it is important for us to collaborate with the best aerospace suppliers and to leverage their expertise.”

Aernnova CEO Ricardo Chocarro said: “With 28 years of expertise in developing and creating aircraft structures, we are proud to be contributing to a project as exciting and unique as the all-electric Lilium Jet, which has the potential to change the aviation industry in a positive, sustainable way, so we are delighted to be a key partner.”

Earlier this week, Lilium partnered with Honeywell Aerospace and Denso to manufacture its electric motor, having worked for nearly two years on the radial configuration of the rotor and stator to lower component weight to just over 4kg, while the power density of the first prototype produces over 100kW.

Last week, Lilium announced 37 new patent applications published by the European Patent Office (EPO) including energy, propulsion, structures and interior, avionics and custom electric, with more than 70% focussed on energy and propulsion.