Engineering

Hello all, I am a 3rd Year Motorsport Engineering student at the University of Bath (uk). For my dissertation, I will be designing and analysing a race-car that is entirely 'grow-able' exc. the motor, and is also bio-degradeable, in some ways similar to the work that has been done by Warwick (WMG). I am not restricted to classes etc. at this point, so I am looking to find any ideas regarding new materials and processes that are being tested at this moment that would fit the bill e.g. bamboo for a tubular chassis (i know this is old now), hemp and others. The materials can be as exotic as possible, as I will be testing and comparing as many as I can. So, i woul…

EMC compared to Portland Cement saves over 90% CO2 emission and energy use. It can be used in 70% of construction instead of Portland Cement, with an estimated annual savings of 2.4G tons CO2 and 2.3T KW energy. When there are many plants to make EMC, the climate may improve. At least, the climate will not degrade as quickly.

Hello, is it possible establish an arc cost function to evaluate the cost of an arc for airline network? Maybe something like BPR cost function?

I was wondering what you all think robotics in the 2030`s will look like

This is a question related to fishing with baits that are buoyant and anchored down by a weight off the bottom of a lakebed like in the image below: When the water pressure gets too high the hook and popup lie flat on the deck. I'd like to see what happens to my popups in 15ft of water and see if they are still popped up and if not I will have to research popup media that work at that depth. One idea I had was to get a 16ft length of 6inch or so wide pipe with a clear container sealed on the bottom of it. This apparatus would be supported upright and then filled with water. I would then lower the rig to the bottom of this and see in the clear container if it st…

It has been discovered that worlds petroleum source is going to end within 100 years.. and if the consumption rate is going to be high then 100 years will be shortened to 50years.. so the need of an alternate source is necessary.. which is going to replace petroleum products??

P={ z + x*y/(y+a) > x/(x*k+1)} where x,y,z are exponentially distributed with mean xbar,ybar,zbar. a,k are constants. please suggest me how to evaluate this probability..... for k=0, P lies between 0 and 1 but for any positive value of k, P become higher than one which is unacceptable.... take xbar=1 ybar=3.14 zbar=1

Hello, I am not sure if this is where this topic should be and if that's the case I am sorry. I am currently building a project or rather have ideas to build a project but I dont know what to make. I wont lie it is for school but we are suppose to seek help from anywhere we wish and be as independent from the school itself as possible. Since i am going the technology course it has to be techy with a report and I have the entire school year to build and I pay for the supplies myself. but the project itself I choose what I want as long as it stays relevant to the subject of technology and engineering. I ask you to help me give ideas what I might be able to build…

need some ideas soon, and try and list some that has not been done.

I know most perpetual motion ideas are complicated to hide the flaw and I have a complicated one that I can't find the error in. Imagine a 1000 ft dam. I roll a 50 gal barrel full of water off the dry side onto a chain mechanism that generates energy until the barrel is at the bottom. I empty the barrel. Then I open an airlock at the base of the dam and put the empty barrel in and close the door. On the wet side I open the airlock and the barrel rises conected to another chain to harness the rising energy. When it surfaces I fill it with water and send it back down the dry side. All I have lost is the water from the barrel at the base of the dry side and the water …

I'm wondering how best to make a material, say a thin bar, that has very good shock-absorbing properties and low mechanical stress. I was thinking a layered mix of fiberglass and carbon fiber, bound together by resin, and I was wondering what some more experienced engineers would think of this.

One quick question... What drawbacks do you see if our homes are supplied by DC voltage, instead of AC? That is, imagine that about 100 years ago we opted for DC, not AC and that everything is engineered accordingly. Would now our homes appliances cost less or more, overall?... Please, don't consider power distribution problems at first. I am only interested about possible drawbacks once the current is delivered to a home. The problem I see is about replacing AC motors with DC motors - DC motors being either more expensive or less reliable (washing machine, compressors for refrigeration, water pumps, fans...). On the other hand, powering various electronics (TV, compu…

http://www.youtube.com/watch?v=X5AZzOw7FwA So you guys think this will actually be able to be mass produced? What else do you think about 3d printing?

Hello you all! Water saving basins are long known and used for water transport. Explanations at Wiki: http://en.wikipedia.org/wiki/Lock_(water_transport)#Water_saving_basins where I pinch RokerHRO's illustrations: Descending operation Ascending operation The equivalent for airlocks, with several air tanks at varied pressures, is possible and sometimes useful, to save energy and accelerate the airlock operation while limiting the peak pumping power. Is it already used? Highly possible. I didn't check that for long. Marc Schaefer, aka Enthalpy

I'm Looking to do a science fair project for my Science Research class and i came up with this idea where i would test if the frequency of sound would be affected by gases and liquids. Whats i would do is i would have some device playing sound on one end of a tube, have a material that sound goes through easily and then i have gas or liquids in there then i have that same material and then a receiver. ANYWAY to my main question, has anyone done this experiment and actually gotten some results about where frequency is altered by gas or liquids? if you could post below with some kind of source so i know i can do this experiment and not have it a dud.

Could three buildings of this type be constructed to form a triangle, where the inner support wires connect between the towers instead of to the ground? http://www.thebigtower.com/live/SandyHeath/Index.htm Floors could then be inserted and thick fabric sheets be wrapped around the structure. To deal with wind the structure could be fragmented, such that only every other floor was used, the wind blowing though the thiner empty stories.

Hi! An attempted explanation for the tragedy of Lac-Megantic is that the only running locomotive was shut down by the fire brigade when extinguishing it, and as this locomotive stopped to provide pressurized air to the train, the wagon's brakes opened and the train ran away. Which I can't understand, because at least here in Europe, for over a century and exactly for the cited explanation, all brakes are pressed by a spring and need pressure to open. Could this be any different in Canada or the US? Thanks!

I'm considering doing aerospace engineering in the university But my parents want me to do the actual study. I want to know what it will be like if I do the aerospace engineering. Is that a good career?

http://en.wikipedia.org/wiki/Work_hardening [math]\sigma = \sigma_y + G \alpha b \rho_{\perp}^{1/2}[/math] [math]\sigma \approx \sigma_y + K \epsilon_{p}^{0.2 - 0.5}[/math] So, simplistically stated, the perpendicular / transverse dislocation density (# / m2) is proportional to the plastic strain ? [math]\rho_{\perp} \approx \epsilon_p[/math] Now, [math]\rho_{\perp}^{1/2} = 1/<d>[/math] where <d> = average distance between dislocations. So, seemingly, [math]\sigma \approx \sigma_y + \frac{\left( \alpha G b \right)}{<d>}[/math] And, a 1/d dependency resembles viscous fluid flow, [math]F = \mu A v / \Delta h[/math]. So, th…

This is a hats-off crankshaft :

From what I can tell, there are a few basic leg/foot articulation types. What I'm really curious about is the difference in two of them: 1. The human bipedal one (basically straight leg, 90-degree angle at ankle to foot). 2. The general "chicken" shape (theropod, avian) The question I am trying to get a feel for is which leg shape is stronger at higher weights, and why. I don't know enough about engineering to be able to calculate the stresses on the bones with the varying bone angles. So here's the proposed question: Let us assume we have to identical cubes of lead A and B, each with a mass of 250 kilograms. Cube A is supported by two standard huma…

Hello dear friends! Here I plan to describe automatic spacecraft and manned spaceships that aerobrake at celestial bodies like Earth and Mars, and have big movable control surfaces in order to adjust much the braking force, provide stability, and when needed provide downlift. They look roughly like a capsule fitted with big movable petals, which can be behind the capsule for weaker braking, or extended for stronger braking. The same petals are useful as a parachute at lower altitude and speed, and possibly as legs to land and to move the spacecraft. This may save some mass, and limits the risks of unwanted interactions. Drawings are in the pipe and should make it clea…

Which is more interesting and beneficial among Engineering Math and Engineering Physic?

Hi; I have a question about NVT thermostat; what is the meaning of the following number after the NVT in code? and what are they want to describe? for example: fix 0 all nvt temp 300 300 0.01 in this case what is the first 300? and what is the second 300? and whar is the .01 thanks from your attention Best Regards

Hola Comrades! I'm a newbie here, but I must say the threads in this forum are quite interesting. Might as well stick around for a while. So I'm working with a group on a project to demonstrate "magnetic refrigeration", having thoroughly understood the concept of the magnetocaloric effect, we are unable to comprehend the construction of the heat exchangers that would provide us with such a high rate of conduction (For rotary type). It seems beyond our current IQ limits. It'd great if you guys could pool in some ideas. Also, obtaining the element Gadolinium is proving to be a very tedious task, we're in need for some substitutes, Nevermind if they aren't that efficient…