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With plans to build its first conforming eVTOL aircraft next year, German startup Lilium highlighted to shareholders changes to its aircraft design, including a new short running landing capability.
Alastair McIntosh, chief technology officer at Lilium, said the company’s decision to introduce a traditional landing gear to its Lilium Jet eVTOL aircraft “doesn’t deviate very far from where we previously were. It just gives us more flexibility, and we do get access to more energy within the cell as a direct result of that.”
In response to shareholders’ questions during the company’s first quarter earnings call last week, executives said the new capability is something that’s “always been a potential” for the Lilium Jet design. Lilium engineers are still working out those design details, but McIntosh told shareholders the aircraft would likely need around 150 meters (500 feet) to perform such a landing.
Executives said the feature is important for its aircraft certification program, increasing its battery reserve range and giving the aircraft the ability to respond to real-world scenarios by diverting to an alternate landing site and performing a short running landing if needed.
The company confirmed in late May that it would be using Zenlabs’ battery technology to power its aircraft, claiming that the current technology will allow its eVTOL to achieve a projected operational range of around 175 kilometers (108 miles), assuming a maximum take-off weight and a short 45-second vertical landing.
McIntosh said the lower power demand of a short running landing means the aircraft could be able to tap into more battery cell energy, extending its operational range.
The additional landing option is just one of a number of changes the German startup introduced to its Lilium Jet aircraft following its preliminary design review (PDR).
Lilium has also reduced the number of electric ducted fans on its eVTOL from 36 to 30 by increasing the diameter of each motor, as well as reduced the overall fuselage shape to allow for a cabin that can be reconfigured to a premium four-passenger club cabin, six-passenger shuttle configuration, or a cargo cabin.
Under the leadership of long-time Airbus executive Klaus Roewe, expected to take up his post as CEO of Lilium in August, the company said it is on the path to building its first conforming aircraft in 2023, and has already expanded its supplier list.
Honeywell, Denso and Aernnova are expected to develop Lilium’s electric motors and propulsion mounting system, respectively, and Livent and Customcells are to supply the lithium products and produce Lilium’s battery cells using Zenlabs’ technology.