Lillium Jet, Electric Vertical Take Off and Landing Jet

Is this better then ?

http://phys.org/news/2016-01-chinese-drone-maker-unveils-human-carrying.html

No

As I’m currently closely involved in the design & build of a two seat all electric aeroplane, I’m pretty familiar with the problems and have even spoken with some of the guys behind the E-Genius. Liliums battery will need to be 8 times the capacity of the 280Kg unit used on E-Genius, so me thinks it will be eight times the weight?

Lilium don’t seem to have understood the basic square vs cube divergence when trying to scale ideas. Maybe young guys in their early twenties could be forgiven but the wow! is the ESA backing. I’m appalled.

Is this better then ?

http://phys.org/news/2016-01-chinese-drone-maker-unveils-human-carrying.html

I think you didn’t know about E-Genious yet ?

http://soaringcafe.com/2014/07/klaus-ohlmann-flies-7-world-records-e-genius/

As I’m currently closely involved in the design & build of a two seat all electric aeroplane, I’m pretty familiar with the problems and have even spoken with some of the guys behind the E-Genius. Liliums battery will need to be 8 times the capacity of the 280Kg unit used on E-Genius, so me thinks it will be eight times the weight?

Lilium don’t seem to have understood the basic square vs cube divergence when trying to scale ideas. Maybe young guys in their early twenties could be forgiven but the wow! is the ESA backing. I’m appalled.

Sorry I still don’t get it.

Car range can be easily increased by adding battery Kg and the amount of power needed to move the car doesn’t increase very much. It doesn’t work like that with aeroplanes, remember this thing has a max take off weight of 600kg of which 200Kg is passengers.

Some A level maths , plus a little Google means this thing needs 200kw/hr of battery, which weighs in at 1300Kg (note I’ve not done an iteration with the likely mass increase but it will snowball). Electric motors come in at 2 KW per Kg so 320Kw of motor comes in at 160Kg. The rule of thumb for state of the art power electronics is that it will weigh the same as the motors, so there’s another 160kg.

This thing range will be limited to the length of its power lead at best.

I can’t even be bothered to await the roll out with interest.

I think you didn’t know about E-Genious yet ?

http://soaringcafe.com/2014/07/klaus-ohlmann-flies-7-world-records-e-genius/

I wouldn’t be so direct. The fact that street legal cars cannot do 1000 km does not mean it wouldn’t be possible.
One engineer ( Andraxxus ) here counted that alone stereos, airconditioning and headlights in a car today consume more electricity than A-model Ford’s engine produced power (3 kw ) some hundred and ten years ago.

Sorry I still don’t get it.

Car range can be easily increased by adding battery Kg and the amount of power needed to move the car doesn’t increase very much. It doesn’t work like that with aeroplanes, remember this thing has a max take off weight of 600kg of which 200Kg is passengers.

Some A level maths , plus a little Google means this thing needs 200kw/hr of battery, which weighs in at 1300Kg (note I’ve not done an iteration with the likely mass increase but it will snowball). Electric motors come in at 2 KW per Kg so 320Kw of motor comes in at 160Kg. The rule of thumb for state of the art power electronics is that it will weigh the same as the motors, so there’s another 160kg.

This thing range will be limited to the length of its power lead at best.

I can’t even be bothered to await the roll out with interest.

Given most electric cars can barely manage 100miles on a single charge using a battery which alone, weighs approximately the same as the entire empty weight of this aircraft, why is anyone giving this the time of day?

If these guys have a revolutionary & highly secret battery technology why are they so stupid to try selling it in such a mega high risk venture and not say a car which would dominate the green car market……..or just sell the IP to Musk or BMW. It makes no sense.

I reckon it’s got confidence trick written all over it;-
So why is a top European Technology Agency such as ESA backing it?
Is there another level of fraud going on here with EU money?
Or are some investors now so technically ignorant, it’s become really easy to extract money.

I wouldn’t be so direct. The fact that street legal cars cannot do 1000 km does not mean it wouldn’t be possible.
One engineer ( Andraxxus ) here counted that alone stereos, airconditioning and headlights in a car today consume more electricity than A-model Ford’s engine produced power (3 kw ) some hundred and ten years ago.

Given most electric cars can barely manage 100miles on a single charge using a battery which alone, weighs approximately the same as the entire empty weight of this aircraft, why is anyone giving this the time of day?

If these guys have a revolutionary & highly secret battery technology why are they so stupid to try selling it in such a mega high risk venture and not say a car which would dominate the green car market……..or just sell the IP to Musk or BMW. It makes no sense.

I reckon it’s got confidence trick written all over it;-
So why is a top European Technology Agency such as ESA backing it?
Is there another level of fraud going on here with EU money?
Or are some investors now so technically ignorant, it’s become really easy to extract money.

This is same gategory with Möller Aerocar anf Terrafuglia Mark II.

No wait this is better; http://gizmodo.com/oh-look-our-long-awaited-flying-car-is-almost-here-may-1775087364