[grey_whiskers]

The field equation of Einstein's General Theory of Relativity has never before been solved to calculate the gravitational field of a mass moving close to the speed of light. Felber's research shows that any mass moving faster than 57.7 percent of the speed of light will gravitationally repel other masses lying within a narrow 'antigravity beam' in front of it. The closer a mass gets to the speed of light, the stronger its 'antigravity beam' becomes.

Hmmm, an offshoot of the hypervelocity penetrators from the DoD? ;-)

Look at it this way, you have a 1-kg projectile going at 0.57 c. It is headed for a 50-ton tank initially at rest. From F=ma, there is NO WAY the repulsive force from the penetrator is going to accelerate the tank out of the way before impact. Scratch (and dent, and obliterate) one armored vehicle.

Full Disclosure: Yes, I knew people who worked on supercomputer modeling of projectile-armor dynamics. What of it?

Second Disclosure: YES, I *read* the article, and *YES* I'm aware that that's not what it's really about. . .

Cheers!

[oceanview]

this almost sounds like the concept behind the supercavatating torpedo.