By the way, if the passenger area *must be a cylinder for aerodynamic reasons,

 

it can be. Just be sure to separate from the jet engines + wings.

 

Where to assert the triangular wing to the length of that passenger cylinder,

 

is by choice of the engineering. What makes sense.

 

It can slide off or detach from the body that is the jet engine + wings.

 

So this "body" which includes the engines, enwraps around the passenger cylinder

 

to the middle. As shown in this diagram.

 

But whichever is safer and stable.

 

 

 

Hope you all get my visualization in writing...