quiet, stealthy and fast aircraft

aircraft's air intakes pulls in air into engine 

engine enerizes air so that air becomes plasma 

engine pushes out plasma to propel aircraft 

when aircraft approaches speed of sound 

then aircraft energizes air in front of aircraft 

so that aircraft is enveloped in a plasma shield 

or engine pushes plasma out in front of aircraft 

and/or engine pushes plasma out of pores in the aircraft's skin 

so that aircraft is enveloped in a plasma shield 

which negates air friction on aircraft's skin 

and that plasma shield negates sonic boom 

and makes aircraft quiet during supersonic speeds 

and the aircraft's plasma shield 

might make it stealthy against various detection systems

engine pulls in more air and pushes out more plasma 

to propel aircraft to hypersonic speeds 

the hypersonic speeds makes air become plasma 

because of air friction as the air comes into contact with the aircraft 

electromagnets inside aircraft controls plasma 

to prevent air friction and/or plasma from overheating the aircraft 

and to control how the aircraft moves in air 

and/or the electromagnets accelerates the plasma 

that envelops the aircraft 

to propel the aircraft 

if the plasma shield prevents the aircraft's air intakes 

from pulling in more air 

then electromagnets inside the aircraft 

could pull in plasma into the aircraft's air intakes 

and the engine could energize that plasma even more 

to propel the aircraft 

optionally the aircraft could collect air 

and then close it's air intakes 

and use onboard air as reaction mass 

and enerize that air into plasma to move the aircraft into space 

and then continue to use that air as reaction mass 

and energize that air into plasma 

to move the aircraft in space as a spacecraft 

it's all about having an energy system 

with a sufficiently high energy density 

if that is available, then hovering and flying cars would be possible 

the question is if there is an energy system 

with a sufficiently high energy density available 

in the civilian commercial market 

to enable the aircraft to be used for passenger flights