Unfortunately this aircraft — known as the XF-91 Thunderceptor — never saw the light of day. Despite being the first fighter to break the sound barrier, it was shuttered. Here's why.

One of them is the XF-91 Thunderceptor. Designed by Republic Aviation (makers of smash hits like the P-47 Thunderbolt and F-105 Thunderchief), the Thunderceptor was supposed to be a machine ...

The XF-91 Thunderceptor wasn’t just another experimental jet—it featured one of the most unconventional designs in aviation history: inverse tapered wings. But what purpose did this strange ...