Why the U.S. Abandoned Nuclear-Powered Missiles More Than 50 Years Ago. Last week’s explosion of the Russian missile produced this article.
https://www.popularmechanics.com/mil...ssile-skyfall/
The United States tried to develop a nuclear-powered cruise missile in the 1950s and 1960s but abandoned the project as impractical. The weapon was known as Supersonic Low Altitude Missile or SLAM, and it would have been the most dangerous nuclear weapon ever made.
SLAM, also known unofficially known as "The Big Stick," was designed as a low-flying cruise missile. A rocket booster would launch SLAM into the air and boost it to speeds where its nuclear-powered ramjet engine would kick in. Once activated, the engine would give SLAM a top speed of Mach 3.5. The YouTube channel Curious Droid has a great mini-history on this doomsday weapon:
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