Nuclear thermal propulsion (NTP) has stood as a promising potential alternative propulsion technology for decades. Chemical ...

Measuring forces in the millions of newtons, like the 570,000 newtons thrust of jet engines or the staggering 33 million ...

In order to keep that top mass stationary (for the whole rocket pendulum thing) the thrust force must also change both in magnitude and in direction of the thrust. So, this is not a normal rocket ...