Siemens' 110 lb world-record electric aircraft motor produce 348hp at 2,500 RPM
Just for clarification here, while it would be nice to
have an RTG (especially since it takes 100 years to run
out of charge) obviously for the ordinary man and pilot
this would be difficult. Also, adherence to rules is of
course, foremost. It is however a do-able concept that
doesn't violate the law of energy conservation.
That being said, simply replace that component with a
hydrogen fuel cell. A little different, but people are
doing it and it works for an APU charger. Combined
with quick charge batteries, you'll be fine.
Lastly I want to give an illustration. If you take a
dc light bulb, a 9 volt battery, and say... 50 feet or
more of wire and make the connection, you will either
see no light, or a faint orange glow. Then if you take
that same coil of wire and drop it into a bucket of
liquid nitrogen with the 2 ends hanging out, then connect
the bulb and battery, it will burn as bright white as
the battery touching the bulb itself. This is due to
zero resistance and super conductivity.
Now, being realistic think of an airplane today with
a long wiring harness of several wires. It will be
zip tied to the frame and run through grommets at
points to prevent sheathing penetration. What if we
take that harness and run it through an insulated
metal tubing, with leak-proof ends. Imagine an insertion
point wherein you can inject liquid nitrogen. You
have now just done the same thing as in the above
This is just one example of my design that could be
installed in your cryogenic system to achieve super
conductivity. Should the liquid nitrogen warm over an
extended period... it will harmlessly vaporize, and
you'll recharge it as needed.