/sci/ - Science & Math

[Anonymous No.2901757]

What form of propulsion is going to allow humanity to leave this solar system?

[Anonymous No.2901764]

obvioulsy a mustard based system using string beans for c-c-c-c-ushioning

[Anonymous No.2902582]

antimatter-matter reaction

[Anonymous No.2902606]

ramjets for between solar systems, solar sails or something other for inside solarsystems

[AcidFrippFag !!aA0GbTMNLDz No.2902620]

>>2901757
Fucking wormholes, son.

Unless you want this shit to take fucking years.

[Anonymous No.2902628]

quantum hyperbolic baby propulsion.

[Inurdaes !V1sPhobos. No.2902632]

Ramjets

[pascal !n5Z3VuZapw No.2902639]

Pascal drive

[Anonymous No.2902641]

bistromathics

[Anonymous No.2902645]

solar sails accelerated by laser satelites.

[Anonymous No.2902646]

Here's the problem as I see it:

We need to stop working against time. We're not gonna travel faster than the speed of light. So let's just find a way to prolong our life.

[Anonymous No.2902654]

I blame Star Wars and Star Trek for FTL magic.

[pascal !n5Z3VuZapw No.2902662]

>>2902646
Instead of accelerating the vessel, accelerate the rest of the universe. That way only you age. Add in cryo, and you sleep for 100years until reaching destination, but only a,few days passed for everyone else

[Anonymous No.2902667]

http://en.wikipedia.org/wiki/Alcubierre_drive
or worm holes.

[Anonymous No.2902677]

Cuntjugglization drive.

[Anonymous No.2902690]

Ok, riddle me this /sci/...

We're described as always falling into gravity wells. Be it us to the Earth, Earth to the Sun, the sun to the rest of the galaxy ect.

If you're at the bottom of a resonably deep gravity well, and that gravity well was propagating at the speed of light in some direction. Would you move along with it? I suppose a visual analogy would be surfing a wave.

[Anonymous No.2902719]

Big ass linear accelerators built by self assembling robots in the oort cloud. It will accelerate you to .03c in in one day. You will pull about 10g and the accelerator will only need to be two au long. Then a nuclear powered ion engine will take over for the remainder of the journey, but most the time it will be used to decelerate you. The actual starship will be quite large and be home to several dozen people for multiple generations. There will be a closed life support system powered by the reactor. Thorium will probably power it unless someone figures out fusion between now and when this thing is ready to launch.

[Anonymous No.2902786]

I once heard that if you could accelerate at one mile per hour - per hour, you could simulate the earth's gravity inside the spacecraft AND you would reach the event horizon of the known universe within a normal person's lifetime.

But I think the energy required for that would be absurd.

[Anonymous No.2902792]

>>2901757
None.

Humanity will never leave this solar system.

[Anonymous No.2902802]

>>2902786
Earth's gravity is 22 miles per hour per second, not one mile per hour per hour.

[Anonymous No.2902811]

A wikipedia article said that if we could travel at 0.1 the speed of light we'd have colonized the whole galaxy in the time it takes for the milky way to do half a rotation.

[Anonymous No.2902834]

>>2902811
.1c is 67 million miles per hour, approximately 450 times faster than the fastest any spacecraft has yet traveled: 150,000 miles per hour. Those were the Helios probes, by the way, using the Sun's gravity to accelerate.

[Anonymous No.2903332]

>>2902802
Oh. Well that's still not that impressive.

[Anonymous No.2903399]

Mass effect drive

[Anonymous No.2903417]

>>2903332
It would achieve 150,000 miles per hour, the fastest speed ever achieved by a spacecraft, in less than two hours.

So yeah, it's pretty impressive.

[Anonymous No.2903426]

>>2903417
Not impressive enough to reach orbit.

[Anonymous No.2903452]

>>2902719
I'll vote for you for dictator.

[Anonymous No.2903464]

Humanity won't last that long, OP.

The best we can hope for is that our eight-legged cephalopod overlords that take over the planet after we die off will be able to build on our own technology and achieve some superior form of space propulsion.

[Anonymous No.2903470]

>>2902719
>10G
>24 hours
Tell you what, you go try to survive that in a centrifuge and then we'll start developing your idea.

[Anonymous No.2903491]

Massive lasers in orbit / Lagrange points pushing solar sails.

Also, nuclear ion engines. Small but constant push.

[Anonymous No.2903498]

>>2903470
ok done

>The human body is better at surviving g-forces that are perpendicular to the spine. In general when the acceleration is forwards (subject essentially lying on their back, colloquially known as "eyeballs in"[13]) a much higher tolerance is shown than when the acceleration is backwards (lying on their front, "eyeballs out") since blood vessels in the retina appear more sensitive in the latter direction.
Early experiments showed that untrained humans were able to tolerate 17 g eyeballs-in (compared to 12 g eyeballs-out) for several minutes without loss of consciousness or apparent long-term harm.[14] The record for peak experimental horizontal g-force tolerance is held by acceleration pioneer John Stapp, in a series of rocket sled deceleration experiments culminating in a late 1954 test in which he was stopped in a little over a second from a land speed of Mach 0.9. He survived a peak "eyeballs-out" force of 46.2 times the force of gravity, and more than 25 g for 1.1 sec, proving that the human body is capable of this. Stapp lived another 45 years to age 89, but suffered lifelong damage to his vision from this last test.

[Anonymous No.2903508]

>>2903498
We already know people can survive 10g. It's the 24 hour part that is the problem. We have no idea what long term exposure will do to someone.

[Anonymous No.2903513]

MFW >only need to be two au long

[Hurr !EC8ELrsQP6 No.2903560]

We won't

[Anonymous No.2904271]

>>2903508
>We have no idea what long term exposure will do to someone.
The US Navy left a guy in a centrifuge for 24 hours at 2 Gs, under which he ate and even attempted sleeping. So, long-term survival in these conditions is certainly plausible.

But starting at around 6 Gs, maintaining consciousness becomes a real task. During extreme maneuvering, fighter pilots must use special G-suits, muscular contraction and controlled breathing just to avoid G-LOC. Aerobatic pilots achieve even higher levels through extreme physical fitness and conditioning. And while G-LOC itself may not immediately be fatal, it is caused by reduced blood flow to the brain which, if sustained for more than a few minutes, could lead to permanent brain damage or death.

Another interesting finding of the Navy's centrifuge testing is that immersing the subject in a fluid (i.e. water) to provide evenly-distributed external pressure almost eliminates the effects and even sensation of acceleration. One subject went 28 seconds at an incredible 28 Gs in "the fishbowl," as it was called, and reported that severe sinus pressure was the only noted sensation.

[Anonymous No.2904282]

A fusion torch is OK if you have the infrastructure to mine HE 3.....

[Anonymous No.2904291]

The only viable route in leaving Earth's gravitational pull is through thermonuclear propulsion. Look into your hearts, you know it to be true.

[Anonymous No.2904297]

>>2902606
>>2902632

how would this work? ramjets work on the principle of incoming fluid creating the pressure needed for the jet engine principle to work. How would this work in the vacuuum of space?

[Captain Olimar !!ooztLPjQLnv No.2904307]

>>2904297
The idea is you use a magnetic net to gather helium for fusion from the interstellar medium.

[Anonymous No.2904318]

>>2904291
Luna 1 says fuck your shit.

[Captain Olimar !!ooztLPjQLnv No.2904323]

>>2904307
>>2904297
http://en.wikipedia.org/wiki/Bussard_ramjet

It's different than a normal ramjet, I just realized what you meant.

[Anonymous No.2904333]

>>2904291
THAT'S IMPOSSIBLE!

[patachu !LULZISTwQI No.2904373]

>>2902639
no, PATACHU drive ! i know where we go.
and this time we don't take hitchhikers.

>>2904323
let's couple this with a turbonuclear ionic scramjet. with nitrous kit for hyperspace.