- Location
- Canada
So, Shepard is a Kwisatz Haderach?
FTFY. Also, You're.
Incompatible System
- Thread starter mp3.1415player
- Start date
FTFY. Also, You're.
Ooof. Many things being said and corrected. Lets summarize:
1) A larger black hole leaves you with lower tidal effects, mainly because you're further away from the center (at least while outside the event horizon).
2) People are much squishier than ship hulls. They aren't Kryptonians
3) You can treat things as point sources, not when they're big, but when they are more far away than they are big.
Being round simplifies things a bit via symmetry, and big things tend to force themselves to be round, but that doesn't apply everywhere.
When considering what happens if a ship loses power during a mission, I think it would go very similar to what happens if somebody's car breaks down on the way to an office party.
1) That one guy gets annoyed at his loose change and candy wrappers bouncing around everywhere.
2) His friends laugh at him for having a bad mechanic and let him sit in the back of their car.
3) They say, "thank goodness it wasn't the truck carrying the industrial BBQ equipment that broke down"
4) They phone for a tow truck to haul the junker off.
Any serious mission would have well maintained vehicles, but would still tend to be a cluster of smaller vehicles plus any larger specialist equipment with professionals driving it.
Except for planium research and disposal sites, everyone can commute very conveniently; even blinking back to Earth for lunch if they want, so there should be lots of redundancy in transportation options.
1) A larger black hole leaves you with lower tidal effects, mainly because you're further away from the center (at least while outside the event horizon).
On small scales, like the gravity drive, your head could be twice as far from the center as your toes, and thus your feet get (1/r^2) = 400% of the acceleration. At 15m it would be ~1%. (So with the drive idling such that you get 100g acceleration at the floor of the habitat, floating free in the cabin would still feel like hanging upside down by your feet because your head's only getting 99g acceleration) Active comfort features not included.
On large enough scales, like galactic cores, you can cross the event horizon without being torn apart, because you're still over 10 million km away from the singularity. That gives a ~00.0000000000000000001% difference in the pull head-to-toe. Throwing in a= C^2/2r, we get 4500000m/s^2, which smudges down to 0.0000000000045g difference if my math is correct.
On large enough scales, like galactic cores, you can cross the event horizon without being torn apart, because you're still over 10 million km away from the singularity. That gives a ~00.0000000000000000001% difference in the pull head-to-toe. Throwing in a= C^2/2r, we get 4500000m/s^2, which smudges down to 0.0000000000045g difference if my math is correct.
2) People are much squishier than ship hulls. They aren't Kryptonians
3) You can treat things as point sources, not when they're big, but when they are more far away than they are big.
Being round simplifies things a bit via symmetry, and big things tend to force themselves to be round, but that doesn't apply everywhere.
When considering what happens if a ship loses power during a mission, I think it would go very similar to what happens if somebody's car breaks down on the way to an office party.
1) That one guy gets annoyed at his loose change and candy wrappers bouncing around everywhere.
2) His friends laugh at him for having a bad mechanic and let him sit in the back of their car.
3) They say, "thank goodness it wasn't the truck carrying the industrial BBQ equipment that broke down"
4) They phone for a tow truck to haul the junker off.
Any serious mission would have well maintained vehicles, but would still tend to be a cluster of smaller vehicles plus any larger specialist equipment with professionals driving it.
Except for planium research and disposal sites, everyone can commute very conveniently; even blinking back to Earth for lunch if they want, so there should be lots of redundancy in transportation options.
- Pronouns
- Yes
Only if the tidal forces exceed the tensile strength of the ship.
Very true, however this is VERY different from "low enough not to produce a noticeable gravity gradient".
That's not surprising, even plain old steel or Iron does.
- Location
- Neptune
Great! But do remember that a ship consists of more than a hull made of superalloys. It actually contains functional elements just as fragile as humans. A superalloy hull helps you very little if the gravity gradient across your pump bearings creates uneven loads, if your coolant valves have to cope with a change of gravity and with that a change of flow characteristic between one side of the valve to the other, if you can't rely on your lubricants to act the samebrom one end of a pipe to the other.
- Location
- Deep in the Badlands of Equestria
That's why ship design that involves posigravity drive systems require some very stringent attention to details anywhere there are systems that can respond in a negative fashion to induced tidal effects. It won't be something that just anyone can dash off on a home CAD system and expect flawless performance out in the real world.
My kneejerk response was, "No, gravity sources are not point sources, it's just that we can usually get away with treating them as such."
Then I remembered we were talking about singularities, which are by definition point sources.
Carry on.
- Pronouns
- Yes
Which ones?
except that the bearings and valves are very small and there's no reason for them to be anywhere near the singularity.
- Location
- Neptune
No, they are NOT very small to do the job right at the posigrav projector, as close as any part of the ship can come to the singularity.
NHO
Dumb is a state of existence
- Location
- ᓚᘏᗢ
Em... People, we are talking about gravity manipulation here. I don't see anything that prevents humanx tech to work in a way gravy in Schlock Mercenary works, where annie plant, massive spherical reactors and source of gravity whose attendant equipment allows, for example, ship desks to be perpendicular to them.
So, would posigravity drives alone produce unfortunate effects? Yes. Are they alone? No, that would be insane.
So, would posigravity drives alone produce unfortunate effects? Yes. Are they alone? No, that would be insane.
- Location
- Here
I suspect the projector itself will be as close to "solid state" as possible, and involve few if any moving parts that can be affected strongly by tidal shear. Plus, as the author has stated, gravity control is used to minimize tidal forces. As such, the shear inflicted will be, if not trivial, at least manageable.
- Location
- The general area. Possibly behind you.
It only goes wrong with a Mk 3 drive, due to minor design flaws that can in specific circumstances allow the singularity to wander before the safeties shut it off. That's bad, but survivable, as the crew of the Rylix found out the hard way.
Even then the ship was intact, it just bent it a little.
Even then the ship was intact, it just bent it a little.
I really want a spinoff/side-story from the perspective of that guy. Texas seceding from the Union and becoming its own superpower is something that's basically impossible but would be fun to read about.
If he does this, I will tip my ten gallon hat to him and MPPi
- Location
- The general area. Possibly behind you.
This is not entirely out of the question. Lord Alamo is becoming one of my favorite characters in some ways
- Location
- Neptune
Then that same tech will moot any claim about effects on the human body being less than on the ship.
M. H. Fuzzball
Aperture Science-certified Horrible Person
- Location
- Sector 2814
Meanwhile, Britain is still trying to leave the European Union...
The owner had gotten incredibly rich and claimed he meant it in the "abundant load of gold" found in some mines, but everyone knew it was because he was incredibly pervy.
- Location
- The Midlands.
It wasn't Reynard "Bob Kurita" Yamaguchi, was it?
- Pronouns
- Yes
Wrong. They are very small (at least relative to the ship's size), and there are none at the posigrav projector. What exactly do you imagine any mechanical parts would be doing in the projector?
How? The whole point of the design is that they can't have the artificial singularity near humans/Thrax or anything else vulnerable to intense gravity or radiation.
- Location
- Earth, Sol System, Virgo Supercluster, Earth-1218
Actually, due to the known lensing effect of the singularity to the fore they could fire along calculated forward firing arcs that go around the forward dish and curve towards the target.
Not very well, though.
Normally, you've got 1 degree per degree to aim at.
With a gravitational singularity in front, most angles go into the hole, and you have to aim wide to bend your shots.
Targeting for the rest of the universe ahead of you is compressed into a ring around the singularity, so you have to aim VERY precisely, and your beams will get smeared out with much wider dispersion. And you're also firing 'uphill' against the singularity so you lose power as well.
For the other guy, there's a zone in the middle where the shots will fail to hit, but your ship will be a bigger than normal ring of a target around that, and all their shots will be blueshifted down towards you.
Not that that is enough to help the ME races win, when they're basically lobbing low speed spitballs, but it does give them the high ground and aim assist.
- Location
- A big rock
Actually, now that I think about it, why don't they just make a negagravity drive? then you could mount it on the back or... you could actually just put the guns facing backwards and shoot the other way around and either mount thrusters on the front to drive backward or just kite them with the posigravity drive. Hell, just using broadside weapons might work aswell. I feel like naval combat paradims may have poisoned our conception of space combat.
- Location
- Neptune
Because designing a negagravity drive requires more work than just inventing a name for it and the results of all the design processes in that resulted in drives that did not work.
- Location
- The general area. Possibly behind you.
The thranx tried that at first, but all the ships would only fly backwards, which annoyed them. So they scrapped the idea and tried something else...
- Location
- Beyond the Unknowable Veil
The negativity drive they tried first was disliked by all. Including the drive itself. Whenever it was switched on, it generated a field of bad vibes.