Towerman April 28, 2021 03:38 AM Well here's something different. It will take a little while to get used to this but i think i like it, the bottom line however is that 1,500 Wh/kg batteries do not exist.And if we get to that stage, how efficient and powerful will the whole system be vs the weight, compared to conventional propeller EVTOL'S.Please do keep up the work, this looks nice.I would not want the regular prop contenders to ever to go away though, so far they are working well, looks great, and is easy on maintenance. I'm so glad you mentioned Joby as well, their machine aces all the check marks for a good EVTOL taxi. I just wish things can go a little quicker in getting it all commercialized and part of everyday life. dan April 28, 2021 06:40 AM big prop with low RPM = gain in efficiency, see solar impulse,. Smaller props = less efficient... That's why Joby will win over Lilium (many micro props) in efficiency and therefor Joby will likely make the deal. Cool renderings, but they rather match a Hollywood production - as said, improving efficiency and battery power is key to success, batteries only have improved in 2 decades from 200 to 300 Wh/kg, so how long for 1500 Wh/kg? And what about safety of this "device" (1000 feet death zone of all eVTOLs) and affordability, e.g. the cost to certify this technology.... Good luck anyway! Winterbiker April 28, 2021 07:03 AM This looks like a great concept for noise reduction and energy efficiency. I would be interested in seeing how this system deals with rain, snow, extreme cold and icing conditions. michael_dowling April 28, 2021 07:33 AM I wonder if they have considered cryogenic H2 fed fuel cells as the power source? There are other startups that plan to use fuel cells for extended flight times: https://www.zdnet.com/article/hydrogen-powered-air-taxi-yup-its-real/ ndrwknght April 28, 2021 08:10 AM I dread the time when VTOL's become commonplace. They are energy guzzlers and noisy. Imagine ten VTOL's taking off and landing on your block every hour! Imagine the noise and dust problems! We are contemplating replacing busses and trains with the most inneficient modes of transportation ever devised!Electric aircraft are less noisy that fuel-powered but they are not silent. Username April 28, 2021 09:38 AM Wouldn't it be great if this thing actually worked?! David April 28, 2021 10:30 AM One obvious benefit of this sci-fi system is there will no longer be bird strikes shattering fan blades or fouling engines - they get sucked clean through! LR April 28, 2021 11:42 AM I wonder if this technology will end up as the fan assist of choice for powered paragliding. Low noise is ideal and the chute can carry the extra battery weight SibylTheHeretic April 28, 2021 12:28 PM Why are they thinking about batteries. Batteries are heavy and slow to recharge. Just use a jet fuel compressor/ generator. More robust design with existing technology and you can you refuel at any airport. niio April 28, 2021 12:30 PM Anytime you see a box wing design you know the aero guys have no experience.