Engineering

I did a quick SFN search and was surprised to find no results returned for 'Moon Water!' Well as was publicized back in November NASA believes they have discovered signs of water on the Moon! \o/ This took me down the pretty obvious Rabbit Hole I call 'space exploration.' What could water on the Moon mean for space exploration? No it doesn't mean we will have something to drink while we are up there.... What do I feel I would like to exploit about the existence of water on the Moon??? Well! I think if it is discovered that there are significant amounts of water on the Moon/1 that we must most definitely tap into this resource as a viable means of energy storage a…

I recently discovered Philo Farnsworth's "fusor" reactor design, which uses inertial electrostatic confinement to produce fusion reactions for up to 30 seconds at a time. I have a moderate (electrical) engineering background and have done lots of simple projects, but building a "fusor" sounds somewhat... involved. However, I'd like to build one. Can people suggest more intermediate skill projects that use similar concepts to the fusor which I could do in order to develop the requisite background to construct a fusor? I am thinking various devices based around vacuum chambers or related to creating confined plasmas. I have a friend who has the requisite equip…

Why have we not heard anything about building deep-sea oil valves with double or triple redundant blowout preventers? Then all the blowout preventers should be periodically tested. Duhhhhh!

The second period of this R&D Works field are compatible with public necessity, which can be seen from its adaptability within the Thirteen Activity area services of FP7- EC and the European Research Area (ERA) classification. 1. Cooperation. All of my R&D works are needs cooperation. 2. Health. A. The first time of medical research is ‘Corpora Cavernosa Hydraulic Control / CCHC or PPM, B. Next medical work, is a less contagious disposable injection syringe,C. Another samples of my medical works are Comfortable Surgeon/Dentist Hand-glove, D. Less-pain Catheter, f. Earplug, E. Candy Drugs. 3. KBBE - Food, Agriculture and Fisheries, A. D…

I'm looking for good designs for power generation for a rural community in Africa. I've seen see-saw designs and a bicycle design. Using the bicycle to inductively transfer power between the back wheel (primary coil), and two secondary coils on either side of it. Then to convert this into DC and supply lights etc. Therefore you would use people to actually peddle to the meddle to energise lights. Any other designs/ideas? Comments about this idea i mentioned above? - Jaxx

Hi This is a powerful rotary internal combustion engine. When rotor round one time, engine work six times.My mechanical design aim was to create a power for UAV,MAV, robotics, mini-generators; engine size is very small, can be forged or EDM etching method of mass production. Because the rotor around its axis, uniform rotation, so it can reach a very high speed, high power. If you are interested in,Your views? see: http://www.ipernity.com/doc/zheshi/8407631/ http://www.ipernity.com/doc/zheshi/8453474?from=8453474&at=1278335662

hi guys i need an article about petrochemical wastewater treatment by membrane separation method it's really really important for me, so please help me

Hi I've had an idea for a self-powered turbine but I know about as much about engineering as I do about putting on make-up. Here's the idea and if anyone can tell me if it's the greatest invention since the knife and fork - genius, but I still have trouble eating soup - or the crazed machinations of an intellectual ameeba (I don't think I've spelled that right) I would be very grateful. We have a large central rotating column, attached to which are 8 arms reaching out. On the end of each arm is a circular frame. Each circular frame has a large fan in the centre with 8 smaller fans spread equally around the circumference. The central column is given…

I have to modify few structures of a bike and i am confused as to how to classify the loads and what theory to refer for this calculations, wheather to go with impact loading or gradual loading for the purpose. specifically i am replacing the engine with heavy drive system.

Hi my name is Robert Schmidt, I have created a valular conduit that allows the use of the tesla turbine and any compressed gas. Hopefully hydrogen! I have used propane and oxygen and compressed air.

Hi science community, I am attempting to calculate the efficiency of an oil cooler that takes the form of a counterflow shell and tube heat exchanger. In the shell is the oil which is being cooled from around 70*C to 40*C In the tubes is pure Ammonia (R-717 refrigerant) which enters as a liquid and leaves as a gas. I am very confused by the phase-change in the Ammonia.. do I use the heat of vaporization to find the Heat generation (Q_dot). (With this equation: Q_dot = m_dot * h_fg)? I have been attempting to use this formula to find the efficiency: Q_dot = e * C_min * (T_hot_in - T_cold_in) with e being the efficiency. Am I on the right tra…

Could anyone recommend some really good books for beginners on Heat Transfer and Fluid Mechanics? Thanks

Hi everyone. I have a question regarding hybrid cars. The average hybrid car consists of an electric and petrol motor with a large and heavy battery pack. Usually, the petrol and electric motors run separately, with the electric motor running when light power is required and the petrol motor cutting in when extra power is needed. Of course, the battery requires external charging from a mains socket. I was thinking why you couldn't have a hybrid with a petrol engine that runs continuosly, not connected to the transmission but only recharging the battery? My rationale for this is that you wouldn't need a large battery pack requiring about 6-8 hrs of runninig ti…

Hi all.... Can anyone help me thru these questions... a) % of thinning allowance calculation of tubes while expansion b) standard drwg. for tube to tube sheet weld joints c) Inner Radius (Min.) calculation for floating Head Cover In AES Heat Exchanger d) Selection criteria for sliding strip/sealing strip width & thk only, length will be considered according to tube bundle length e) calculation for finding PULL OUT LOAD ( for conduct mock up test) Thanks in Advance

Hello, I am new to these forums and really hope there is someone out there who can help me. I am working on a project where we are mixing BaCl2 (actually BaCl2*2H2O) with river water. The river water contains an extremely high concentration of sulfate (around 5000 ppm) and we want to reduce it to around 10 ppm or less. So we are mixing it with barium chloride (after baking the BaCl2 for 48 hours at 200 degrees C to remove the dihydrate) in a 55 gallon drum to form barium sulphate precipitate which eventually settles out of solution. The total volume of water is around 130 liters and we are using a 1350 RPM motor with a 3.5" diameter standard propeller. We have …

Hi. Does anyone know if deformable oval plastic pipes/hoses/tubes exist ? Like to return to their oval/flatter section shape when emptied; getting rounder to 1/2" with the fluid pressure increase to 100 psi; capable of being attached to round fittings ? Seen only some garden hoses being like that, but would like to find something more sturdy/durable.

salam, Iam a 5th student at departement of elelectronic,Ifound a very helpful journal paper in science direct site titled (failure modes and reliability modelling of protective systems) to my final year project but I do not have acess, if someone have ID and password could you ples download it for me :embarass:it is very urgent I need it before 25 june. thanks:-(

On the gulf petroleum leak disaster, they did not use the wire saw; they went with a circular saw instead, I think... The collapsing half cut pipe bite the saw? As cutting a tree branch from the underside ? Is that what happened ?

Hi, I am currently doing tests in a wave tank to measure the wind and wave influences on evaporation. Obviously the wave roughness is closely related to the rate of evaporation, but anyway... When I input large wave heights with high frequencies, there is a lot of splashing going on in the tank..and a lot of water adhering to the glass wall of the tank. Would the water adhering to the tank walls increase the evaporation rate and why? *Note the tank is in a controlled environment with constant temperature and humidity parameters. Thanks.

who knows all about fluid mechanics? Merged post follows: Consecutive posts mergedpower-law fluid flow in pipe?? how knows something about it? i just want to know how to make the equation of continuity and the rheological one, of power-law, in a dimensionless form... I already made this but, i didn't find any common dimensionless numbers like Reynolds or others

Hi. I prefer to buy a fan instead of an air conditioner, and browsing the market, there is one i would reaaaally like, but is not for sale Can someone tell me what the hot hell is going on here : This one ----> http://www.youtube.com/watch?v=EvWxe_RRo8k http://www.youtube.com/watch?v=yq67pNwLKdQ http://www.youtube.com/watch?v=u5lXNpOnurw These machines are popping out in good numbers. Is Houdini behind them ?

I'm looking for a small device that I have in my imagination but I've no idea what it's called! Can anyone help? I need it to seal a small (2.5 mm diameter) water pipe with pressure difference of up to 30 kPa. I need to be able to stick a needle (or small tube) in and suck out the water with a pump or syringe (not important what exactly) in order to get rid of any air bubbles in the system. It needs to stay sealed, before, during and after insertion of the needle! Similar I guess to a spors ball valve or a sports drink container. But it needs to be small (about 0.5-1 mm)! I imagine a small circular stiff rubber seal split into "leaves" like a pie. When the needle …

Do you think it would be possible to hybridize bacteria with an engine so that it constantly can use NO2 for the engine and cool down the engine, thus allowing a faster, more efficient automobile?

I have to interview a Computer Engineer for a school project. If someone in this career field could answer these general questions, I would really appreciate it. 1. Was this an area that you were always interested in, or was there some other reason you pursued this field? 2. How did you begin your work in this field? 3. How did you learn about it? What skills/knowledge are required? 4. How did you gain the expertise you have? 5. What are some of the resources that could help me learn about these fields of study/careers? 6. What are some challenges involved in mastering this field? How have you overcome these challenges? 7. What do you find rew…

Hi guys, at school there is a competition between all classes, we have to build a catapult with 300 ice cream sticks (popsicles), 5 elastic bands and 1 thin metal stick. we have to make a ping pong ball fly as far as possible. We already have a design but can you please help me with important details and things that make the ball fly far! Thanks for your help rigadin