Steve Jackson Games Forums - View Single Post - [Spaceships] [Space] Firing an Azrael-class world-killer at a planet's moon

cvannrederode · 09-28-2017, 08:08 PM

According to my Ti-89, the tau factor need to make a 10^10 gram Azrael (nice round number) have 2x10^32 J of kinetic energy is 222,531

The tau factor at 0.99999999999c (eleven nines) is 223,607. So at that fraction of the speed of light, the KE of a Azrael exceeds the gravitational binding energy of a Earth-sized body.

Does anyone want to work out how long (relative to the target planet) it would take one to reach that speed?

09-28-2017, 08:08 PM	#7
cvannrederode Join Date: Apr 2015 Location: Pennsylvania	Re: [Spaceships] [Space] Firing an Azrael-class world-killer at a planet's moon According to my Ti-89, the tau factor need to make a 10^10 gram Azrael (nice round number) have 2x10^32 J of kinetic energy is 222,531 The tau factor at 0.99999999999c (eleven nines) is 223,607. So at that fraction of the speed of light, the KE of a Azrael exceeds the gravitational binding energy of a Earth-sized body. Does anyone want to work out how long (relative to the target planet) it would take one to reach that speed?