Engineering

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…

Here is the idea. If an air conditioner was powerful enough, with intake and exhaust designed properly, you can remove Coronavirus (or any virus) from the air by the A/C moving the air faster than normal in an upward direction. You want the air to circulate so fast that if someone sneezes the water droplets will remain inside the room only a few seconds before it is sucked out the ceiling vent. For cooling the room, the idea is cool air enters the room near the floor and the warmer air exits through a ceiling vent, the "return." For heating the room you would also introduce warm air through low floor-vents, then the exhaust exits through the return in the ceilin…

Right now, amid the covid-19 global pandemic and climate change and so much more, locusts are also decimating crops and amplifying starvation across the African continent. They’re everywhere and they’re hungry and people are hurting with hunger. What would it take to catch the locusts en masse / at scale and use then as a source of protein to feed the hungry? Essentially: Prevent them from causing starvation and use them to solve starvation. I’m thinking of something like a giant fishing net for the air, but am sure there are far better ideas (am not sure, however, humans can even eat locusts, but they seem close enough to crickets). Bonus points if any s…

Hello I'm trying to make a motorized rollerskate. if you've seen the show Air Gear, then, you know what i'm trying to make i don't know if their is some sort out in the market today but i would like to own a pair. or make a pair. doesn't matter. if anyone could help with this i would greatly apriciate it.

What could be done in order to store liquid methane at room temperature? Possibly some "super-additives" which are capable increase boiling point dramatically?

https://www.cracked.com/personal-experiences-1848-i-work-in-nuclear-power-plant-5-insane-realities.html "A small mistake during the reassembly caused 50 gallons of thin, flammable, corrosive oil to go spraying everywhere. Another time, the control room people goofed and shut a massive valve to the cooling tower before turning off the pump. The resulting pressure caused the pipe to burst, and we had ourselves a man-made geyser. Of course, this was in the winter, so the whole thing then froze solid. Yes, I realize I'm painting a very Homer-Simpson-ish portrait of the operation. But to be extra clear: None of that put the public in danger. These are expensive pro…

Sorry if this has already been posted, but this has been bugging me for a while and a search didn't turn up anything. We keep talking about alternative energy sources everywhere when there is a constant energy around us all the time. What I want to know is, could gravity be used as a feasible source of energy?

I am a bit baffled why the Stirling Engine is not more commonly used when we, as a global community, need to turn out engines which are quiet and clean with a lack of heavy pollutants? What are the restrictions stopping the use of this beautiful engine? Link http://upload.wikimedia.org/wikipedia/commons/c/cc/Alpha_Stirling.gif

Hi, Someone told me after building a multi storey building. In one section of the building existing downpipe(s) weren't effective at transferring water from roof to ground level - water I believe was pooling on roof. To solve this, a screw design (see attached) downpipe was created. The screw design supposedly helped suck the water down the pipe. There are two problems that appear to me straight away: 1. The velocity ignoring frictional losses down the screw design would be less because gravity forces are not pulling the liquid straight down, the smaller the incline (from horizontal) the slower the inlet velocity of liquid. 2. The internal screw…

What will wireless communications look like in 50 years? Is there any new ideas on how is it possible: 1) Reduce amount of the base stations (cellular towers) quite a lot. 2) Increase the data transmission rates. 3) Reduce radiation. 4) Increase the distance signal travels and reduce power consumption? Is it possible at least theorize that somewhere in the distant future we may have wireless communication with no need for the base stations and subsequently free of cost, basically?

Would be great to find a member that has professionally studied about these devices and can clear myths found everywhere including the web. Or that is not a myth. Excessive fluid level in an automatic transmission is warned against. (Oil in engines too, but I understand why in them) What parts become damaged ? (if damage is the concern) Is there symptoms of overfilled ? If you share the commonly found opinion that overfilling will foam the fluid; where in the transmission, how, why is foaming supposed to form ? Wouldn't 'foaming' happen if there is too little fluid instead, and the pump is sucking some air from the pan ? -That would be the opposite of overfill…

Hey everyone, I have a project that I am working on and I am in search of any material that is completely heat resistant up to about 150 degrees and does not change form, if there is such a substance out there. If anyone knows if there is a good heat resistant pant out there that would be awesome as well. Glad my title is grammatically correct...are* Thanks, -Jason-

I'm a mathemetician trying to test out a theory of mine. I have never taken any physics before, so i need help from the physicist and the engineers here. How much force/energy/work is required to lift a 2000lb car off the ground? What is that transalted into newtons and into rpms?

Hey, what i am trying to achieve is a small spark that will go accross a gap of about 1mm using a 12 volt car battery. I have read how car ignition systems work to make a spark, but without going down to the junkyard and buying an ignition coil, i'd like to make one. Can someone please tell me how i can make an ignition coil and how i would wire it to the battery so that it will produce a high enough voltage to cross the spark gap. Or give me a diagram or equation or something?

I want to build a home made electric RC Heli, very small and light. I have one of those Mini RC racers, like these and i want to convert one into a heli. They are powered by capacitors, but I don't know If the motor and all can produce much thrust. I can make prop blades out of nylon to keep it light. Does anyone have any suggestions, ideas, or even better; has anyone actually made their own electric micro heli? If it won't work to make it out of the car, what can I use? I want to use capacitors, because Li-Po batterie cost too much. What motor should I use, etc. Thanks for any advice.

what is the difference between civil engineer, architect, and contractor?

Hey, I'm looking for high critical temperature superconductors (110-130K range) for a project I'm working on. Does anyone know where I can get these? Thanks

Want to learn how a 2500 watts PEL Hi-Power electronic stabilizer works? It does not provide 220 volts although values mentioned on it are as: Input = 90V - 250V Output = 220V I opened it and it has two meters which show input and output voltages. It has a transformer (not sure step up or down). It has a circuit which have 2 10A relays. Relays number is H200Fd12-10A. This circuit also have two rotating screw like things which can be adjusted to increase amperes or decrease amperes as one of person while repairing told me. The problem I believe is with this circuit. I am ready to change whole circuit along with relays. The maximum size relay I can get is 30A relay…

Hello. Why are in general, water pumps outlet made smaller diameter than their inlet ? This is not asking why inlets are larger; but you can also elaborate on that if you want.

Dear visionary inventors, megalomaniac engineers and audacious explorers, Chemical rocket engines aren't up to our desire to hop in the Solar system: go quickly to Mars, deviate Earth-threatening objects, and so many more missions. We need a higher ejection speed to save propellant mass, but this takes more energy than chemical reactions bring. One possibility is to tap Sunlight instead of transporting the energy. I suggest - as others did - to directly heat the propellant with Sunlight. Converting first to electricity would enable even higher ejection speeds, but direct heating is energy-efficient, so for a long weak thrust, the collector area is feasible - smaller…

The expander cycle pumps oxygen to the chamber, and hydrogen to a higher pressure into the cooling jacket where it evaporates. Lukewarm hydrogen passes through a turbine and flows in the chamber. It gives the RL-10 and heirs good performance, simplicity and an easy start. Operation with methane was demonstrated. Though, an engine burns fewer methane moles with more oxygen moles; I propose instead to pass the oxygen through the jacket and the turbine, which enables higher pressures hence improves the performance. I compare with 400K before the turbine, 74% and 79% efficient pumps and turbines, injectors keeping 88% of the pressure - and no drop in the cooling jac…

I'm trying to build a mousetrap catapult. It would be launching acorns. I was wondering how I can get the acorn to fly as far as possible? Is a shorter arm or longer arm going to throw the acorn further, and what other features, such as rubber bands, can I add onto the catapult to make it more powerful? Thanks.

How do I make a coil or a series of coil constantly move electricity as the magnet passes it in half of a circle/armature. Do I simply make an oval shaped coil that covers the area I needed cover, or do I make a series of coil? Think of it like a motor but instead, the coils are only on half of the armature.

Too many times are things too good to be true. It seems to me if it were really true they could use materials like graphene. Or make such bold claims as the beginning of perpetual energy if it charges in as little time as they say. If it is real how many years till it is used? Or widespread?

I'm attempting to extract some additional heat from an existing fireplace and wondering if anyone can help me with the rate of heat transfer from air through a copper pipe to water. Here's what I have....a fireplace with two chambers outside of the firebox where air can be blown to other rooms via duct work. Rather than blowing air, I'd like to install a copper coil of 1/2" flexible copper tubing and heat water to pump through my in floor tubing in the basement. The question is, if I have 40' of 1/2" copper tubing in the chamber with water flowing through it at a rate of 1-3 gallons per minute (if I set my pump on low speed and only open 1 of 4 loops in the floor …