We think standard rotor 
could be dangerous:
all your life hangs on it.
Moreover, it's bulky, 
heavy, fragile
and very, very expensive.
Each single rotor costs 
about $ 200.000, 
enough to buy a big house.

The fuel consumption 
is dreadful, and the 
copter flight
has not long authonomy.
moreover the fuel mass
is a great weight to lift;
it would be possible,
on big helicopters,to charge 
also ten passengers more
without increasing fuel's weight.

In this picture,
the technician on the top
is inspecting the rotor
before  removing it.
Later on, the turbine engine,
the gear box, andthe tail rotor
will be completely removed.

This is the view of
the main command console
of a standard
military  MD500 copter.

You can see 
the variety of 
commands and instruments.

Many of them won't be
necessary any more.

Cloche and pedals only
will mantain 
their primitive function, 
to help the mind configuration
of the pilot of the copter. 

The pilot
will be easily able
to drive X51-D 
after a short training
period of one week.

A technician is checking
with a phonometer
the level of sound 
pressure around the 
copter, while the new 
engine is quietly running
without the pilot. 
The most frequently 
detected values
don't exceed 99 dB(A).
Later, the spectrum analyzer
will detect the noise 
frequencies generated by 
anti-gravity engines.

The sounds perceived
are often similar
to white and pink noises.

The main thrust
is provided by
two main AG engines,
(main lift/main push)
while directions
are controlled by 
five anti-gravity
small tubolar engines,
mechanically orientable
by cloche and pedals.

Without 
the main big rotor
and gear section,
this is the
new look of x51-D.

One of the main  
X 51-D features,
is the possibility
to fastly reversing 
the flight direction
simply inverting
polarity field.
This may be done
suddenly 
or step by step.

It is even possible
at max flight speed
without any problem.