For the concept of safety, the single engines allocated at the wings,

they should be fed by chemical fuels. (Maybe) Not electric. Or to have batteries

of their own, always charged in case of emergencies...

 

And these engines should be different in such a way that, the startup

will be faster, if at all possible... As this is happening in mid-air.

 

 

But virtually, hardly any chances of the core engines breaking down.

And the size of the battery is not limited. Diameter can be as big as it needs to be

Weight distribution is okay as well, as the heaviest is in the middle,

and the engines are wrapped around it...

 

There's a lot of modification needed, but it accommodates the bee-hive designs as well....

(Because of its height)

 

The plane will be larger in size than the usual.

 

But the speed, safety, comfort, and re-usability. May outweight the costs involved.

Manufacturing costs can be reduced by,

 

my interlocking wood, and CNC machining the frame, alongside shell- related components,

which can be metal plated wood as well. That said wood may need to have many holes in it.

But if it sustains the structure it would make sense....