/Sci/ Challenge Thread

[Anonymous No.5928393]

Challenge: You must design a full-body suit that can withstand sustained fire from 50 caliber machine guns and sniper rifles. (Lead FMJ bullets)

Criteria:
1. The suit cannot cost more than $250 Million.
2. Must be made out of materials that are available to us today.
3. The suit cannot feel like it weighs more than 80 pounds.

Impressive Mode: Allows for fluid movement, but joints are still protected.

Demigod Mode: Is able to withstand shrapnel explosions with the same efficacy as an EOD suit. Has an integrated respiratory system that can filter out deadly toxins in the air.

Godmode: Suit can enhance the wearer's explosive strength and endurance. Wearer can still move if suit is taken offline by an EMP blast.

[Anonymous No.5928398]

These are going to be the closest Humanity will ever come to a "Super Soldier"

[Anonymous No.5928399]

This one doesn't feel like it weighs a thing, is completely EMP-hardened, and can be lived in during a nuclear war (as long as you aren't hit directly).

[Anonymous No.5928407]

The problem isnt building the suit its powering it. Using hydraulics a giant mech warrior style machine could feel like it weighs nothing but how do you power it.

[Anonymous No.5928413]

>>5928407

I'd use a collection of nuclear generators spread throughout the body.

[Anonymous No.5928421]

>>5928413
What kind?

[Anonymous No.5928425]

>>5928421

Whatever scales down the best / weighs the least. Preferably a LFTR generator.

[Anonymous No.5928430]

It would probably be better just to have multiple gasoline powered generators, like on the marine suit from starcraft. Which is doable with current technology. If you were to use nuclear power it could become damaged and unable to shut down.

[Anonymous No.5928443]

>>5928393
Easy. A regular suit, just wear it really far away from whoever is firing at you, so that the bullet loses all it's kinetic energy before it hits you

You never specified distance or how many rounds sustained fire is.

>>5928413
You'll get exposed to lethal amounts of radiation, which should give you superpowers!

[Anonymous No.5928447]

>>5928443
Not if you use proper shielding, little reactors are very easy to defend against.

[Anonymous No.5928457]

>>5928425
>>LFTR
A suit with a highly concentrated critical mass of uranium close to your body? AWESOME! If anything goes wrong, you can just detonate the suit like an atomic bomb and go out yelling PRAISE HARUHI!

[Anonymous No.5928460]

>>5928457
Do you know what LFTR stands for?

Do you know the difference between a nuclear reactor and a nuclear bomb?

I suspect the answers are no.

[Anonymous No.5928467]

>>5928443

20 bullets at 300m? Idk

Shielding should prevent exposure to radiation.

[Talimar No.5928477]

When you say "us"... do you mean "us" you, or "us" me?

(and when I say "me", I mean real scientists, and not me, me.)

*yawn*

Don't need "power" to hold the suit up, if done right. Hand/wrist articulation would be the most difficult. After that it would be the bracing affects around the shoulders for sharpnel. Given the total movement "needed" for shoulders, the biggest problem during explosions will be to not have the arms come off. Then it would be the legs at the hips, followed closely by the head.

The rest of it... kind of difficult. You would want an auto-asist system for sure, but most of those would be insufficient to prevent damage of the wearer. (based on the info I've read. Haven't looked into fluid dynamics in a couple years.)

[Anonymous No.5928510]

>>5928457
>nuclear reactor
>critical mass
wat.

[Anonymous No.5928525]

[Anonymous No.5928572]

>>5928460
Do you know what a critical mass is? In order to make a nuclear reaction self sustaining you need to have a critical mass. In order to make a nuclear reactor as compact as possible, we should have pretty much pure U-233 as the fuel. If we remove the moderator from this, we get a criticality accident.

LFTR is a breeder reactor, now let's think why that would be a bad thing to hold close to your body...

Aside from that, LFTR is going to be way too large to build into a suit.

Not to mention, no one has actually built one.
>>5928467
>>5928447
Shielding is going to be heavy and large, at some point, it's not a suit, it's a tank

[Anonymous No.5928575]

It's probably important to realize that it's impossible for a human to snap their arm with their triceps or their leg with quad or spine with their lower back. The suit should be designed to be similarly safe.

[Anonymous No.5928589]

http://en.wikipedia.org/wiki/Aluminium%E2%80%93air_battery

[Anonymous No.5928592]

>>5928572
Um. LFTRs don't contain any uranium at all. It stands for Liquid Fluoride Thorium Reactor. It also, in normal working operation, never contains a critical mass. Thorium has a ridiculously high critical mass, which is why we chose uranium instead for bombs.

A criticality incident is not equivalent to "detonat[ing] the suit like an atomic bomb". It is a radiation spike. It is next to impossible in any half-sensible reactor design.

[Anonymous No.5928596]

Done

[Anonymous No.5928597]

>>5928592
>Um. LFTRs don't contain any uranium at all. It stands for Liquid Fluoride Thorium Reactor. It also, in normal working operation, never contains a critical mass.
So, you're a complete idiot, then.

[Anonymous No.5928602]

>>5928399
>Do you even nuclear energy?
Current nuclear energy sources need to be transformed using a steam/electrical device.
>Good luck with Thermocouples

[Anonymous No.5928608]

>>5928597
>he thinks a critical mass is required for a chain reaction

What are control rods? What is a nuclear moderator? How does geometry work?

[Anonymous No.5928615]

<~~~
Quality threads require quality responses

[Anonymous No.5928634]

>>5928615
Due to extensive research done by the University of Pittsburgh, diamond has been confirmed as the hardest metal known to man. The research is as follows. Pocket-protected scientists built a wall of iron and crashed a diamond car into it at 400 miles per hour, and the car was unharmed. They then built a wall out of diamond and crashed a car made of iron moving at 400 miles an hour into the wall, and the wall came out fine. They then crashed a diamond car made of 400 miles per hour into a wall, and there were no survivors. They crashed 400 miles per hour into a diamond traveling at iron car. Western New York was powerless for hours. They rammed a wall of metal into a 400 mile per hour made of diamond, and the resulting explosion shifted the earth’s orbit 400 million miles away from the sun, saving the earth from a meteor the size of a small Washington suburb that was hurtling towards mid-western Prussia at 400 billion miles per hour. They shot a diamond made of iron at a car moving at 400 walls per hour, and as a result caused two wayward airplanes to lose track of their bearings, and make a fatal crash with two buildings in downtown New York. They spun 400 miles at diamond into iron per wall. The results were inconclusive. Finally, they placed 400 diamonds per hour in front of a car made of wall traveling at miles per iron, and the result proved without a doubt that diamonds were the hardest metal of all time, if not just the hardest metal known the man.

[Anonymous No.5928649]

>>5928399
Only success so far...

[Anonymous No.5928656]

>>5928608
Seriously, you don't know the first thing about this shit.

The fissile material in an LFTR is uranium. In some designs plutonium is used to start it. It's a reactor that produces energy while turning thorium (not fissile) into uranium (fissile), so it makes its own fuel *from* a thorium feedstock.

Nuclear reactors won't sustain a reaction without a critical mass, unless there's a potent external neutron source, such as one driven by a large particle accelerator. LFTRs require a critical mass of uranium (or plutonium).

Control rods are used to control the level of criticality, and a moderator makes it easier to achieve critical mass by slowing the neutrons down so they have a larger cross-section to react with the fuel. They don't magically make the reactor work in a subcritical arrangement with no external neutron source.

[Anonymous No.5928672]

>>5928656
He also said "thorium has a ridiculously high critical mass" when it doesn't have one at all, and that bomb-making was the only reason we chose the reactors we did, which is really fucking deluded.

He was right about the criticality incident though, it's not going to be an explosion.

[Anonymous No.5928704]

>>5928672
>He was right about the criticality incident
Let's check the instant replay...

>>A criticality incident is not equivalent to "detonat[ing] the suit like an atomic bomb". It is a radiation spike. It is next to impossible in any half-sensible reactor design.

Now, the person he was responding to was pretty stupid, but not nearly as stupid as this guy.

The only sense in which criticality incidents are next to impossible in reactors is that reactors are necessarily critical when operating, so you could claim that it's not an "incident".