Jack Herman

Experimental pilot testing a new rocket powered craft (actually a Convair F-102 interceptor) manages to fly into the future and land at the now deserted airbase he left. He ends up in a city with people who are suspicious he is a spy and who want to keep him to procreate with the rulers daughter because the majority of the inhabitants are sterile. (imdb)

A Nazi scientist invents a time machine enabling him to go back to alter the events of WWII. (imdb)