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Light speed missiles

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A question for you budding planetologists

What happens if a rock projectile massing 1 displacment tonne (about 60 real tonnes) travelling at 5% of light speed hits a gas giant moon.

What would it do to the moon, any bases on that moon and orbiting ships?

Cheers
Richard
 
That's fairly small, and not excessively fast, so the basic answer is it'll make a big crater. The effect on bases depends on how close they are and if there's an atmosphere.
 
Originally posted by RichardP:
What happens if a rock projectile massing 1 displacment tonne (about 60 real tonnes) travelling at 5% of light speed hits a gas giant moon.
Hrmm. Kinetic energy of the projectile is 6.7E+18J. A megton explosive emits 2.88E+11J, so our rock gives about 23 million megaton blast.

It may crack a small moon, leave a big crater in anything else (even a large planet). Anything on the moon has a serious hurting.
 
The problem I see with all this is that Grandfather is TL35, last time I looked, and if you think a paltry TL17 civ's efforts to attack him, or even LOCATE him, for that matter, is going to be noticed, well, you're deluding yourselves.

I can see that maybe a TL17 civ starts to muck things up, maybe they start tapping into the pinching-off of space that's required to make portals work at TL21, and maybe he's worried about his former race the Droyne coming to an inglorious ad sudden end and TL18 would make bad things happen to them... Whatever.

I can see the possibility that he might want to stir up trouble, but there's no way anyone's gonna be able to touch him, and the only people that even SUSPECT he exists are people in a universe in which he is simply a piece of a game.
 
Er, where did he mention anything about using this on Grandfather?

(and he might be TL35, but it still only takes one solid hit to get through to kill the bugger)
 
Er, where did he mention anything about using this on Grandfather?
I think it wandered over from another thrread.

(and he might be TL35, but it still only takes one solid hit to get through to kill the bugger)
Nah, he just reforms a few turns later, only now he's radioactive.

No, wait, that was nuking Cthulhu.

Ah, same thing.
 
Actually I was going to use it to smash some vampire held SDB pens on gas giant moons in a vampire fleet held TL11 system. The fleet is too large for my small TL15 navy, so I am looking for otherways to smash it.

No grandfathers involved.
 
Er, where did he mention anything about using this on Grandfather?
That's no way to treat the elderly sonny boy!
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Woops! I have NO IDEA how that post got HERE. Sorry. Yes, was for another post... now I gotta figure out where that was. First time I ever crossed up my posts like that. Sorry!
 
Hello.
If its ships you want to hit and they arn't going to move unless they detect you and you know where they are and (yes this is a lot of ands)you can get anything up to 5% light.
Try starting out with several hundred missiles way out of range change the warheads to fleshette rounds (1 ounce iron rounds)have the spread about 2k from point of release)fleshette release not launch and watch the fun.
The ships shoudn't detect the fleshetts incoming they may detect the missiles but will think what a silly bunt for launching them so far away (the spreader could be a balloon you want minimal spread at point of impact).
This will work even better against planetary defences and shouldn't hurt the planet.
Nasty supprises thought up for free here at Deffries industries (no warrenty just hope).
More sock race entries.
Buy warmonger bonds.
 
Light speed missiles are easy to make, as they are made out of light. The travel in a straight line unless deflected by a gravity field, and they have no capacity to home in on the target. The target also can't see the light speed missile coming until it arrives. So much for light speed missile.
Another thing would be near light speed missiles, these can change their direction to some degree, they can be launched by a gravity cannon. A gravity cannon exerts tremendous G-forces on the projectile quickly accelerating it to 95% of the speed of light. Since its gravity itself doing the pushing the projectile itself feels no acceleration and could even have a human occupant aboard. The crucial technology required is the ability to control gravity. In much less that one second the object leaves the barrel of the gun going at 95% of the speed of light. It takes tremendous amounts of energy to reach this velocity, but since the grav cannon does not have to push itself, it can focus all this gravitational energy on the projectile itself.
The projectile could contain its own manuever drive so that it has limited ability to home in on its target. If the missile was fired from 60,000,000, the target would have only 1 second to evade the missile, since the light would take 20 seconds to reach the target and the missile itself would take 21 second. What tech level would you place a grav-cannon at?
 
Unfortunately I have a TNE pocket empire with basic teh level of TL9, with a good amount of TL15 relic industrial capacity. Gravity cannons etc. are way beyond them,

The plan is to boost a smallest ship in two stages upto about 10% light speed and zip acorss the system. Mass drivers will throw rocks (rocks are cheap and I have the relic mass drivers) to smash the moon SDB bases.

I will target the orbital high port and the large orbiting ships with very high G solid penetrator missiles. They will use the 01.C speed of the ships to close and use their agility to course correct and smash into the orbiting vessels. At this speed, they will take about 2 minutes to close. Good idea to mix some flechette rounds in there, it will stop any active point defense, and also take out the milling small craft and lighter escorts whose positions I won't know accurately in advance.

As for collateral damage, I don't mind, this is a vampire nest, and their forces massively out number the pocket empires (numbers, size and general technology). No chance of surgical strikes.

Cheers
Richard
 
Unfortunately I have a TNE pocket empire with basic teh level of TL9, with a good amount of TL15 relic industrial capacity. Gravity cannons etc. are way beyond them,
Actually the Imperium reached TL16 before sucumming to the Virus. The Regency never sucumbed. Its feasible that some inventor may have figured how to deliver a sharp burst of artificial gravity to a small area. 0.1 c is a long way from light speed missiles. Grav cannons are also a good means of transportation. You can fire a projectile with a person onboard toward another grav-cannon that intercepts it. This is a means of transport that's almost like short range teleportation.
 
Unfortunately the pocket empire is on the rimward border of the old expanses, and they have only recovered TL15 equipment. Yes the Regency has TL16 equipment, its just about 6 sectors and a great rift away - ooh well!!

Cheers
Richard
 
Well starships do move around and can come from other sectors. Who's to say you couldn't meet a starship that came from the Regency.
 
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