We have already reviewed some other options for nuclear powered
saucers. Klaus-Peter Rothkugel suggests that the atmosphere
itself could be burnt using liquid air as a fuel and a nuclear
reactor as a heat source. Friedrich Georg has documented some
aircraft engine designs, apparently left on the drawing board,
involving a propeller engine driven by steam heated by nuclear
power. We have seen the enigmatic Messerschmitt design involving
a small nuclear engine on a high-speed ai &7&gB