SLAM - Supersonic Low Altitude Missile
https://en.wikipedia.org/wiki/Supers...titude_Missile
Was an Air Force program conceived in 1955 to build a supersonic guided missile that would deliver nuclear bombs.
But you ask, isn't that just a cruise missile??
Kinda, but this was powered by an
Unshielded Nuclear Reactor!!!! It could stay aloft for 100s of thousands of miles and travel at Mach 4.2
Quote:
In the event of nuclear war it was intended to fly below the cover of enemy radar at supersonic speeds, and deliver thermonuclear warheads to roughly 16 targets.
The use of a nuclear engine in the airframe promised to give the missile staggering and unprecedented low-altitude range, estimated to be roughly 113,000 miles (182,000 km) (over four and a half times the equatorial circumference of the earth). The engine also acted as a secondary weapon for the missile: direct neutron radiation from the virtually unshielded reactor would sicken, injure, or kill living things beneath the flight path; the stream of fallout left in its wake would poison enemy territory; and its strategically selected crash site would receive intense radioactive contamination. In addition, the sonic waves given off by its passage would damage ground installations.
Another revolutionary aspect of the SLAM was its reliance on automation. It would have the mission of a long-range bomber, but would be completely unmanned: accepting radioed commands up to its failsafe point, whereafter it would rely on a terrain contour matching (TERCOM) radar system to navigate to preprogrammed targets.
And they actually built an engine and tested it and it worked. You can read about that here
Project Pluto -
https://en.wikipedia.org/wiki/Project_Pluto
The reactor could produce 600 megawatts. Enough energy to power about 60,000 average homes.
Basically they were building a flying Chernobyl that also dropped thermonuclear bombs..