The Convair NB-36
Nuclear reactors are used to create nuclear chain reactions and they should only be used in areas like nuclear power plants. Although they can be very dangerous, it was attached to an airplane in the 1950s. It resulted in an airplane so dangerous that another plane would follow it every time it was in the air.
The PZL M-15 Belphegor
First created in Poland, the first-ever biplane was called the PZL M-15 Belphegor. It first served the purpose as a cropduster. It was created with so much jet power that was much price than anyone ever imaged.