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**CevepBiageCefm** · 08-24-2008, 03:37 AM

The way to cheat gravity and speed is to reduce the drag of air. If there was a system that propels air particles away from the spaceship/airplane, it would continue to build speed infinitely because there would be no drag so the only slowdown would be the limit of the engine. I think U.F.O's work on this principle.

No, the limit would be the relativistic effects on the craft's mass. Besides, simple Newtonian mechanics will show you that 'repelling' anything off the craft will still result in it experiencing a resistive force. The most one can achieve is to reduce the problem to the lowest possible minimum (although in space, of course, it's not a problem to be really concerned about).

08-24-2008, 03:37 AM	#31
CevepBiageCefm Join Date Oct 2005 Posts 589 Senior Member	The way to cheat gravity and speed is to reduce the drag of air. If there was a system that propels air particles away from the spaceship/airplane, it would continue to build speed infinitely because there would be no drag so the only slowdown would be the limit of the engine. I think U.F.O's work on this principle. No, the limit would be the relativistic effects on the craft's mass. Besides, simple Newtonian mechanics will show you that 'repelling' anything off the craft will still result in it experiencing a resistive force. The most one can achieve is to reduce the problem to the lowest possible minimum (although in space, of course, it's not a problem to be really concerned about).
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