The Insane Engineering behind The Lilium Jet | Part 1

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The Lilium Jet is a marvel of engineering. This eye-catching attractive Aircraft revealed in 2021, generated skepticism among aviation experts. At first glance, Lilium’s ambitious design seems impractical for a fully electric, seven-seat, vertical take-off and landing aircraft. The associated implications of the propulsion system selected appear to make such an evtol concept impossible, mainly given the thrust required for take-off.

In fact, more than 80% of the leading evtol companies are using conventional open propellers as the main propulsion system.

Lilium, instead, has developed a novel electric ducted jet engine that integrates smartly with the wings of the aircraft. The success of this powerful technology not only will allow Lilium to achieve all the performance objectives of the flight profile, but also could help the aviation industry in the transition to affordable emission-free intercity air travel.

In this video, I will go over the 3 key innovations that make this technology truly impressive and technically sound.

This is the Engineering behind The Lilium Jet.
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Chapters:
00:00 First-principles approach to eVTOL design
03:25 Electric Ducted JET Engines
05:50 Distributed Electric Propulsion
08:47 Variable Area Nozzle
09:50 Sustainable Aviation

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◼︎Related Video:

📺 The Technology behind KittyHawk HEAVISIDE eVTOL Aircraft 👉

📺 Why are Electric VTOL Aircraft more efficient than Electric Vehicles? 👉

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#TheLiliumJET #DuctedFans #eVTOLinnovation
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[vernepavreal]

The aircraft sounded interesting unfortunately I am a blind subscriber
If somebody has the time could they describe the vehicle with a blind subscriber in mind thanks
Cheers

[Phrancis]

As a long time aviation enthusiast and hobby drone builder, I've really been excited to see so many eVTOL ideas coming out. It's like the early days of aviation, where so many concepts were being hashed out. Personally, the Lilium Jet and the Blackfly are some of the most efficient, elegant, and interesting ideas IMO. Lillium is more advanced, but the Blackfly is such a simple and effective concept. Better cheaper cleaner battery tech is gonna be the big hurdle to be solved.

[nixl]

Not sure how one would define this to be "insane engineering"!! To me it looks about as sane as it gets!!

[AscendDynamics]

Great explanation. I had been wondering why they went with EDFs, but that explanation of the decision to favor cruise since pure hover is such a short time in the flight makes a lot of sense. Also the gains they get in transition due to the "blown" wing help for low speed flight. Thanks for this video!

[kingplays]

I love your videos. They are always such a high quality 👍🏼

[victoryfirst]

So nice to see advancements are going on in the field of aviation. I look forward to take a flight in the new machine.

[cbazzarella]

I wouldn't call a marvel of engineering, more like a marvel of marketing. Basically Germany's Theranos equivalent. How can the CEO state in this video (11:00): "the technologies in this aircraft are jet aircraft and all of the airplanes flying today are jet airplanes". It's not jet technology, it's simply an electric fan and due to its small size highly inefficient.

[duncanweel]

This is the best electric VTOL I have EVER seen ! It's the safest, quietest, best looking and most versatile new electronic aircraft that follows the proper aerodynamic principal's of flight ! Well done to the designer's and engineers. All theother electric VTOL aircraft I have seen are just upscaled drones with limited to no redundancy and poor cruise flight Power consumption. Am so glad someone has got it right ! Keep up the good work guy, s.

[parasharkchari]

3:20.... Hold on... if it's 10x more efficient in the climb-cruise-descent phase, that in turn implies that the energy consumption per unit time is 10x greater for the VTOL phases. Meaning that even if the VTOL phases add up to 10% of the total flight time, using 10x more energy during that time means that the total energy budget just for VTOL is slightly more than half of the overall flight's energy budget. That is not a good figure at all. Yeah, it's about what I expected given the amount of energy required to actually push your own weight up as opposed to generate lift through motion.

Even assuming you're using a different metric for what you define as "efficiency" (since efficiency is a relative term after all), it's still indicative of how much more power you're going to need to support VTOL and why VTOL is a bad idea for electric aircraft given the obscene weight penalty for energy storage.

[dogaarmangil]

7:33 ❝the system is highly redundant❞ — Having multiple fans per wing provides redundancy indeed, but mounting all of them on a single wing flap introduces another single point of failure. Having multiple independently moving flaps per wing would provide increased safety.

[lucasmichaud-acapulco]

Very nice, but what about the batteries? Charging times and in flight charging possibilities would be interesting to know. Then of course, how much does everything weigh, and what is total capacity, and to what maximum distance?

[akirsch]

What about the batteries? In Germany, there was an extensive discussion about the performance values of the plane and the size and weight of the battery that is needed. That is the biggest challenge in this project!

[JSDudeca]

Great video. What is the source video content from? I've been following William for years and that content is not on their YT channel :(

[alanmakoso]

Wow! To be fair, almost all eVotal, especially multi-rotor ones have a distributed propulsion architecture and redundancy. The boundary layer ingestion and ducted fan are prolly the most creative and innovative aspects of this aircraft tbh. And obviously the airframe looks like sci-fi.

[joeprizzi]

I feel like electric planes would really benefit from a catapult-type launch system- embedded in the runway.
Since a disproportional amount of battery energy is used up during takeoff, reducing that would have a significant impact on range.

[TheMrSlyxx]

This is the most beautiful design of all the EVTOL's. Lilium is the only EV aircraft I want to ride in.

[danielschroederministies]

Seeing that the wings are functional, couldn’t you opt for a short field take off and save energy, in leu of a 100% vertical take off, if a facility was available?

[gorod]

Хорошая идея! Очень сильный конкурент ! Главное, чтобы прошли сертификацию безопасности и др. Боюсь, что такую технологию не пустят на рынок для массовых перевозок. Удачи всем!

[CubeAtlantic]

The Luiium Jet looks advanced, & unique lookin' i always generate, & incorporate ideas similar like this at my job.

[explorer]

Really proud to see how European industry is leading this astonishing and futuristic market. eVTOL are closer to become the future we are all looking at.