Charles Stross wrote a sort of lovecraftian alternate history spy thriller short story (novelette? Novella? Not sure what the word is in English) called A Colder War where both nuclear-powered aircraft and Project Pluto were built. I highly recommend checking it out, it's definitely one of my favorite short stories ever (although the online version I linked to is missing some stuff that was in the version published in eg. one of the The Year's Best Science Fiction collections by Dozois)