Or wait, while holding the shape,

entire half a cylinder of the shell of the airplane, opens up.

 

(So there are no walls, no resistance to air)

 

It just opens up to release the main core.

 

As it stays shape.

 

 

and from there, if there wasn't enough time to turn the jet engines on,

 

parachute then jet engine.

 

 

if just jet engine, then without release of parachute goes forward.

 

 

ok that makes more sense.

 

so that sliding mechanism of the cylinder is important.

 

 

Think of the main core as something modular, which it is,

 

and wrapped around sliding shells, only that cylindrical portion in the middle.

 

 

 

Ok. I think that makes more sense.