Engineering

For some reason I've been pondering the idea of building a real life iron man suit. Obviously to build such a suit would require a lot of power. The mega powered lasers weapons and ion thrusters would require anti matter for power which is entirely impractical so we will have to drop those. I was thinking a 1kW hydrogen fuel cell with tanks of hydrogen compressed to 700 bar(Not sure if those tanks will work) should be enough power. To animate the exoskeleton I was thinking air muscles with 3 times the lifting power of a human's muscles would be a reasonably achievable feat but I'm not sure how much psi would be required or what materials to use for the air muscles. Th…

Hi all, I'm trying to figure out of its possible to draw something on Paint, save as JPEG. rastor, and convert to a vector, DXF, format? My goal is to draw something and CNC machine it. HAs anyone tried something similar?

This is neeeat... look at the streamers There is many more related videos, just picked one. Filled with controversy, many arguments, they built this one to prove/disprove. I like the "It may work in practice, but won't work in theory"

hey guys have you heard/seen about intergalactic space craft propelled by light hitting umbrella like structure of space craft, giving very little push to space craft. And idea is over a long distance it will have speed equal to some % speed of light. cause I have seen this in discovery channel. How can we explain this?

I'm using a current transformer (LEM APR 50 BIO) to measure current at inlet of machine. The transformer outputs voltage. I'm using a MYDAQ with LABview to read in and record data. I was just looking for advice on the setup? I've never used a MyDAQ or LABview before. Do I need a resistor, or how do I find the current? Thanks

Does anyone work with or understand PAM fluorometry for the purposes of assessing ETR rate in microalgae? We have a Phyto-PAM, but not sure how to operate - everything is set up, but how to use the software to get the correct results is a bit shaky. I think if I understood what results I am supposed to be getting, then I will be able to play around with the settings - but I am completely new to this. And no one else at work seems to be able to help me either... I've attached the manual of the PAM we use. Thank you! phyto_4e.pdf

Recently, I came the topic Thermoelectric Modules, Coolers. I have a basic doubt. Assuming, I am supplying 100w of electric power to a thermocouple and heat starts generating on one side and cooling occurs on the other side. I would like to know what percentage of the electric power is converted into heat? Does heating : cooling ratio equals 50 : 50? Regards

Does anyone know why the traditional 'gangsta' shooting position, namely holding your pistol sideways, would make aiming the weapon more difficult? I just watched an episode of MythBusters where they were testing various shooting stances, and they found that holding the gun sideways actually rivaled shooting from the hip in its difficulty shoot accurately. This makes absolutely no sense to me, because the way I see it, whether the gun is upright or sideways, you can still use the sights just as well. Is there some kind of engineering reason behind this?

Hi, I have to start a campaign in a pen and paper role-playing game soon and I came up with what I think might be an interesting setting. I just need some information to iron out the details. Skip to the bold part if you don't care about the premises. Basically, the world where the campaign is set is experiencing an ice age: smilodons, mammoths and stuff like that. There is a southern state which is somewhat like Mongolia before the great Khans: fragmented in warring tribes, each led by a Warlord, fighting against each other for food and survival. Ancestor worship, great warriors, supreme hunters, only the strong survive, etc. One Warlord rebels and s…

I am designing my own Charpy impact testing machine and I am unsure what would be the best as well as relatively simple and affordable method I can use to accurately measure the angle the pendulum travels after it has broke the sample. I would also appreciate any complex and more expensive ideas too that I can consider, accuracy and reliability are the most important things. I have thought of some methods but a lot of them will cause friction against the pendulum which could over complicate the final calculations. For anyone that is not familiar with the Charpy method here is a link to a brief description: http://www.twi.co.uk/services/technical-information/fa…

Hello I have to make a design for a concentric heat exchanger . The cold water (in the shell) flow rate (1.2L/min) , inltet temp. (25 C) and outlet temp.(40 C) is given. For the hot water (in the tube) the inlte temp.(70) is given and the outlet temp. should not exceed a cretin value (55 C). I also have a correlation between Re and the over all heat transfer coefficient (U) for the hot water and another one between the flow rate and U also for the hot water which I obtained form an experiment. I started by calculating the heat absorbed by the cold water Qc but I can't equal it to the heat emitted by the hot water Qh, the instructor told me to use the mean tempe…

This is so cool I had to link it.

I was wondering what kinds of things would be required for an underwater city such as dimensions maximum feasible depth maximum feasible height minimum size etc and what kind of general problems would need to be eliminated and possible solutions. ps. I mean this a beginning of a general discussion so if you have any ideas please share even if they don't address these specific items

Distillation sets today are far too expensive. So, I'm going to build my own. Here's the ideas I have so far: -The retort will be made from a flower bulb (with the long glass part bent sideways and a glass entry tube inserted by heating a copper pipe of the same size, passing it through, and 'welding' the tube on. -The condenser will be made of a glass tube (coiled if at all possible) inside a cut-open, clear wine bottle that has had two holes melted into it with entry and exit points for water flow, which can be hooked up to a garden hose. Is there any way to improve on this? I'm looking for cost efficiency and product efficiency (though not to the extent that I'd pay…

I can't believe people who are this amazing are real. I knew about famous people with prosthetic limbs like Terry Fox, but these people are closer to the likes of Robocop and Luke Skywalker: So, if you guys were going to have cybernetics, what type of implants would you rather get?

I'm currently reading a novel (Sword of Truth - Book 6: Faith of the Fallen, by Terry Goodkind) in which an army utilizes glass dust as a weapon of war against an army vastly larger than theirs. Using only about two buckets worth of powdered glass, they release the dust into the wind at the opposing army, and ultimately it results in the death, blindness, or incapacitation of well over a hundred thousand enemy troops, whether by blinding them (permanently) on the field of battle and having them accidentally kill one another, destroying their lungs and respiratory tract, or causing serious infections therein. I was just wondering whether there was any plausibility to …

is it possible to make plasma jet engine or even plasma PD engine?

I have an 8-ohm, 0.5 watt speaker that is the perfect size for a project I am attempting. Is it possible to hook this up to an mp3, ipod, or Arduino Uno?

Hello i am working on a project and was wondering if my setup would work to test different induction coils. Parts I'm thinking about using is listed below: Input 120v 60hz -to- 120v VFD 230v 3 phase out -to- Ac contractor -To- (will test many kinds) Also what wire works best?-to- load Click on links to see part.. If I need different parts (so they all work together) please let me know. outcome is to have a set up with best range of frequency and voltage for around 300$ also to have coils make strong flux If you have any better ideas please let me know source will always be 120v wall outlet Well thanks for reading and possibly your help

For an assignment at school I need todesign an extrusion machine for a thick-walled PVC pipe with an SDR of 6. Isthis makeable? Eva

This is my first time posting here so if this is the wrong forum, I apologize in advance. I've been doing some web browsing and can't find much information on this idea I have been tossing around in my head and thought this might be a good place to ask about it. The idea. Static electricity induced perptual motion generator. I really don't have any idea if anything like this would be possible and if it would if static electricity could produce enough energy to be worth it. The basic idea would be that this generator would have an internal battery for start up and storing a base amount of energy so that it can keep running. The spinning of the device could produce s…

Ok, so, I'm presuming everyone is familiar with space elevators, as they've been discussed here plenty of times, so I thought I'd pose a special challenge. Imagine we have all the parts - we have the ground station, the satellite, the elevator, and the super-strong cable. How do you put it all together?

Hello everyone, I have a problem and I really don't know what kind of mathematical method should I apply to solve or model my problem. I would be thankful If anyone can give me some answer or help. Suppose we have more than one option to select a set of numbers. like A={a1,a2,a3,..an} and B={b1,b2,b3,..,bn} (number of members in each set is equal to n) each ai or bi is an integer value. We also have a threshold value lets say "TH". If we choose Option A, the new value of set A becomes A={a1+1,a2+1,....an+1} and also same case for B or any other options. Each round we have options, my question is that which option every time we must select to increase the num…

Hey guys. I'm currently finishing up a lab report on fatigue testing and I was wondering if anyone has any ideas on sources of experimental error? I'm assuming it'll probably come down to calibration but any insights would be appreciated. Cheers!

What are the latest ways to reduce the weight of aircraft, cars and ships? Are we talking new metal alloys or engineering practice?