Engineering

Hello Why newton's third law is not applicable for non-solid subsatances....?

What is the strongest diving suit available? How much PSI can it take under the sea?

Hello All, Long time reader, first time poster. Not an engineer. Problem: A car drives over a speed bump. How much weight rolls over the speed bump per axle? Assumptions: Normal sedan, suspension, tires, etc.; weighs 3000lbs Assume 50/50 weight distribution (I know it's not) Driving 10mph Speed bump is 1ft long, 1in high (I know, small) Questions: What would your thought process be? Please be detailed. What's the right unit of measurement? lbs/square inch? Considerations / missing information? Thinking the suspension might come into play... anything else? What would some good assumptions be? Note: This is not a work or academic related problem-- Jus…

If the electrics were to have battery/caps in various standard sizes, and those standard sizes were available for replacement in an exchange system at charging stations, then a fully charged battery/cap could be quickly installed, the old battery/cap traded in and recharged for later testing and resale. This could be done in no more time than to add gas at a traditional gas station. On a high amperage quick disconnect, the lighter batteries for compacts could be exchanged by the customers in most cases. Larger vehicles would have bigger, heavier units to exchange and be priced accordingly. Another possibility is to offer charging stations a subsidized solar/wind utility …

Several companies or administrations develop fast neutron reactors presently, one project being Astrid by France's CEA... Well, these reactors are perfect targets for present-day weapons. Take for instance a 20t single-stage solid rocket that fits on a banal truck - simpler than a V2. It can propel a 2.5t passive steel head out of the atmosphere to 2,500km range where the head falls down at 5km/s. This pierces some 5m steel or 10m concrete - thicker than any present or future reactor can have. The recent Chinese anti-airplane-carrier-missile may be of this type; anyway, it punches a ship that is better armoured than a nuclear reactor. Falling on a reactor, the hea…

ok in conventional coal power plants we lost large amount of heat (35%) when steam condensation to water, why don't we just send stream back in to furnace without condense in to water more fuel save

Hey all, Basic question here. I'm a noob starting out with electronics and I've had a hard time getting an answer to the question this topic poses. I've got a basic electronics project I'm putting together: I have a small wind turbine I've put together that generates some electricity. I also have a small solar panel I'd like to wire into this circuit to basically add to my total output and charge a small battery. What would be the best way to go about this? I've heard that charging from multiple sources of varying voltage can be bad, this will obviously be the case considering the wind turbine will not always be spinning and the solar panel will not always be rece…

I have question here :Suppose that I build anti-gravity vehicle,is it possible to move that vehicle in earth atmosphere or in space: 1. By using earth electromagnetism 2. By using universe electromagnetism or other universe forces.

Im a pretty serious musician i think and was wondering if anyone out there could help me out i use some chapstick (lipbalm) and i put it on very edge of the last fret of my fret board (mainly the last string) so i was wondering does anyone know if the molocules can grab ahold of the string too cool the string down? It does certinaly help, so i was wondering if any1 could give me some ideas if this does work or not or if im just full of my self haha thanks

Is it possible to turn on the tap so that lots of water flows down and then put a piezoelectric crystal under it to generate power?

Hi. I am doing some experiment on finding the electrical characteristics (surface conductance specifically) of a particle which is then attached to different amount of DNAs. The whole aim of this experiment is actually to analyse the sensitivity of this new found method of detecting DNA, but I don't think I need to explain it in detail for this particular problem. Now, this zeta potential is crucial because it's needed to calculate the crossover frequency of the DNA-attached particles. Crossover frequency is the frequency at which dielectrophoresis force is 0 (neither positive nor negative). After measuring the zeta potential of the particles, it was found that the zet…

hydrogen seems like the perfect alternative fuel its super light and more explosive than even gas. and when hydrogen is burned it recombines with oxygen to make water. so its powerful and has no bad air pollution. electric cars have big batteries that have harmful chemicals there too heavy and you cant go vary far. so why haven't we switched over to using hydrogen engines?

Hi I have a question... Is it possible to create a electromagnetic field that has enough force to separate substances in a heterogeneous substance?

It is proposed to produce Units of Energy / Fuel called FORCE CELLS ! Each of these cells hold a Unit of Mechanical Energy. It is designed as a Spring which can be wound and unwound or Compressed and Decompressed. Any of the above may do but I prefer a linear tensile wire which can be wound up and locked and when touched on a point opens out and produces a direct CIRCULAR FORCE for Automobile Motoring !! Like the Clock Spring. Therefore the Car will be built with an Engine which takes in a stream of Fuel Cells from its Tank / Stack and have a Carburetor / Integrator which arranges these Cell on a platform which with one trigger will open out all the Fuel…

Hello everybody! Staged combustion lets one propellant pass fully through a pre-chamber (or gas generator) at high pressure, adds a bit of the other propellant to burn it partially to a moderate temperature, and pass the big flow through the turbine. This gives more power to the pumps, and the higher pressure in the main chamber makes a more efficient engine. I've much simplified my obscure sketches here under; the reader may imagine in his clear mind: Each propellant passes first through a booster turbopump. A second impeller brings only the small fraction of auxiliary propellant to the pre-chamber pressure. This saves power, the gain is notable. A propellant flows…

Hello everybody ! Some experiments (clocks, atom interferometers, tests of satellite parts...) must run under zero gravity. Among the methods: Space station - Back seat on a satellite - (Small) own satellite Seat on a launcher's side booster - own sounding rocket Parabolic flight aeroplane Drop tube. A drop tube provides among the best microgravity quality if not the longest. It's up to 150m tall, evacuated to eliminate the air drag, and the experiment drops through it for 5s, or 10s if it's thrown upwards from the base http://en.wikipedia.org/wiki/Drop_tube http://de.wikipedia.org/wiki/Fallturm_Bremen that's unusual engineering and I hope you find it puzzling too. -…

Hi, This problem has been driving me mad! Can anyone simplify the physics of this problem? Because I can't solve due to to many unknowns. Question ref: Engineering Materials, Benham, Crawford & Armstrong. Please refer to attachments.

3D priniting technology seems set to revolutionize the way we live and will impact fields as diverse as food and automobile ancillaries. Will this technology ultimately provide us with real organs available for transplant ? Please opine.

Hello! I don't know if this is the right place to ask, but I wonder if its a good deal use stirling engine for energy production in a small-medium farm. Thanks for the response.

Hi, is there any one can tell me what is the name of chemical name of green phosphor screen? Used on Night Vision Goggles and CRT monitors, oscilloscopes.

I am a Engineering college student working on a weather balloon project, in which we are hoping to launch up with a camera on board to try reach the stratosphere. The idea of the camera is to capture footage and images on its journey. Does anyone have any advice on materials to use for this project? As we will only have a limited budget to work with. Or any other tips and advice on this project if anyone has done it before?

Is this basically how Wardenclyffe Tower was suppose to work

Hi all. Trying to make/modify a magnetic compass. I should be able to attach a ~4mm mirror to the pointer or disc. The orientation of the mirror should be rotatable, by moving a dial or mechanism that will not impair or interfere with the heading. In other words, a mirror on top of the disc center, facing -say 135 degrees and reposition it to -say 170 degrees. Seems a dry compass, disc type instead of pointer or wet type would be preferred. How would you handle the repositioning mechanism ? ======================================================================================== By the way, how did compass got its name mixed up in English with the…

If you had two tanks of relatively similar PSI (one slightly less than the other). Would the compressor needed to transfer gas from the lower PSI tank to the higher PSI tank simply have to raise the PSI to above the higher tank PSI to transfer gas. Basically would a weak compressor still be able to get the job done? Seeing as it only has to comparatively raise the PSI a few points? I ask because I was thinking in terms of robotics. If you used compressed air to actuate movement, could you use two tanks to achieve this. Have one tank as the primary (with the larger PSI) and another slightly lower PSI tank as the secondary. So when you use the higher PSI tank to mov…

Hello, I am making a project on development of parachutes. I would like to know what happens, to a descending parachute when strong winds act on it .., in detail the parachute is a primitive one..(like the ones used for airdrop) can someone please help me in this topic.. Thank You in advance..