Engineering

They say it's hard to send manned spacecraft to the planets further than Mars with present chemical rocket. Future rocket will have low energy consumption rate for propulsion enough to carry out such mission successfully. Here I offer the idea of a kind of fusion rocket as a future rocket. http://hecoaustralia.fortunecity.com/accel/fusionrocket.htm

A new, highly sensitive gyroscope which uses Rb atoms as a matter-wave may be able to measure frame-dragging more accurately:

Once the pulse jet engine has been used for some aircrafts. But they were noisy and moreover consumed huge fuel. Here I propose an revised pulse jet engine, which could consume fuel much less than original one (it's still noisy, though.) ttp://hecoaustralia.fortunecity.com/pulsejet/plje.htm

The simplest accelerator is here! http://hecoaustralia.fortunecity.com/accel/accel.htm

sorry for making a thread like this 2 other times but no one would help me. I need help with keeping tubes in place after being moved to a certain position without having to do anything to it manually my idea is to put wires in it so I don't need to do anything to it after its moved into place pneumaticly PLEEEAASE HELP!!!!

Hi, I am currently a freshman at college pursuing EE major. I am interested in researching, and I want to research in an area that would benefit humanity at large. By benefiting humanity, I mean the research has some practical applications to medicine, or the research would technologically advance day-to-day life. I am interested in specific research areas. Your help would be greatly appreciated. Thanks!

Hi all. The basics are simple, the currents produced by dissimilar metals in seawater, the erosion and deposition of material depending on the electronegativity... I see it as a simple galvanic cell, a 'battery', but I have a void somewhere in all this. If an iron barge floats on seawater, and no other metals are part of its hull, will still need (Zn, Al) sacrificial anodes attached ? If an aluminium boat hull has a bronze propeller I can understand the migration of charges and erosion of metals; but what if the hull is only aluminium and no other metals, will it still deteriorate and need protection ? Now, an aluminium hull has good electrical connection wi…

Molecular transistors "(Nanowerk Spotlight) Transistors are the fundamental building blocks of our everyday modern electronics; they are the tiny switches that process the ones and zeroes that make up our digital world. Transistors control the flow of electricity by switching current on or off and by amplifying electrical signals in the circuitry that governs the operation of our computers, cellular phones, iPods and any other electronic device you can think of. The first transistor used in commercial applications was in the Regency TR-1 transistor radio, which went on sale in 1954 for $49.95, that's over $375 in today's dollars ...While the first transistors were over 1…

Ultrasound-mediated TDD(transdermal drug delivery) is what i'm gonna ask you guys about: they said that applying ultrasound and insulin (quite like a patch i guess) at the same time might lower your glucose level real quick but... Does insulin molecule remain biologically active after this ultrasound exposure? any comments?

I know the older flourescent lights needed to be supplied by more current than you'd think by examining the power load. Beyond the power consumed in the bulb, there was a larger current being utilized but at an inductive phase angle so it is not power-consuming. Thus the volt-amp rating was maybe 2-1/2 times the power put out. This means you have to size the supply wire to yield this much current. Is the same thing true with the electronic balast screw-ins we have now?

what are one's thought on perpetual motion? would it be possible using a machine that operated of strong magnets? edit: i spelled perpetual wrong in the topic. whoops

Blocking oscillator is a typical non-linear oscillator. I found there is a pull-in effect between two blocking oscillators interacting each other. It might be applicable for alternative telecommunication method as described in the following site; http://hecoaustralia.fortunecity.com/c0508/block.htm

Hi, I am working with CFD to analyze a swirling burner with a square section combustor. When I calculate the angular and the axial momentum inside the combustor, it decreases the more I check downstream to the burner exit. Do you know what would create a decrease in the angular and axial momentum inside a square section combustor? Should the swirl number variate inside the combustor? Thank you very much for your help.

I’m trying to design a larger Quadrotor (http://en.wikipedia.org/wiki/Quadrotor) craft that runs off of a single gas engine. Does anyone know anything about how quadrotors stabilize and how I would be able to achieve the same effects using a single gas engine for all 4 rotors? I assume it would have to be done through collective pitch adjustments? Is this even possible? Any help would be appreciated, thanks. Brad

Well, I looked around and this seemed like the most active place around, so I'll post this here. Gotta write a nice, long research paper - with a survey. Post your age and gender, make it up if you want - I don't really care. Here it is - very basic. Multiple choice so the common American gets a 1/6, 1/5, 1/4, 1/2 chance of getting it right. (This is for everyone, just so long as it is written in French or English.) 1.If hydrogen fuel was made possible, would you use it? A. Yes B. No 2.Do you know what hydrogen is? What? A. Yes, it is a gas and compound. B. Yes, it is an element. C. NO! 3.How much money would you be willing to pay for hydrogen fuel,…

An unusual explanation of How induction motor works I translate a paper i that was orginaly in hebrew I need also help in spelling and other sugestions see http://mourici.googlepages.com/howinductionmachineswork%28operate%29

Not sure where to ask this, but here goes... It's often said that nuclear power stations do not emit CO2 and so may be able to solve our energy problems with regard to global warming. However, considering that the radioactive stuff is dangerous for at least 100,000 years, and has to be 'dealt with' over this period of time, has anyone ever done the calculations to work out whether more energy is spend dealing with the 'mess' of nuclear power stations over 100,000 years than the ernergy they actually produce in their operational lifetime?

I have a bunch of old circuit boards I've collected over the years, and the sheer mass has grown to the point that I need to do something about them. I saved them either because I could use them elsewhere (e.g., power supplies) or because I wanted to reclaim some of the parts (connectors, gang resistors, etc.). Almost all of the parts in which I'm interested are heat-tolerant. Unfortunately, getting the little buggers loose is turning out to be more of a chore than I anticipated -- I think primarily because the pins are soldered through the boards and not just to the pads. I've had limited success in using a solder-sucker to clean it up. I used to have some …

OK I am here for ideas to elaborate a system to irragate 6 acres of ground using solar energy and a generator to jump start the system. Let me set up the idea here. 300 feet pumped uphill from a water well then 1000 feet to the edge of the property and downhill about 600 feet into pond, overflow going into a creek 300 feet is pumped straight without a break in the line at the turn going across the hill about every 100 feet I will have a drip system that is on/off so that I can water that section using gravity to drain the water back to the pond and/or creek Now to the area that I want to utilyze to produce some electric feedback to charge a bank of mar…

How do tazers work? If it was AC, then it would be easy as a step up transformer. It uses a 9V battery, however, so I have no idea. You can't have a transformer with DC, right?

Someone invent the carcycle. With the transportation capacity of a car, but you pedal it. Like an upgraded version of the Flintstones car. You can advertise it to the environmentalists so that they can reduce pollution. Then the athletes so that they can get a good workout. Also people who want to lose some weight will want to get the good workout. People who want to diminish car accidents will support this, too. It'll make millions. Billions.

There is much talk on the news with are energy problem and some talk about nuclear fusion or cold fusion is this where we use water not oil? So nuclear fusion or cold fusion use water or plasma not fossil fuel? And if nuclear fusion or cold fusion is a answer to are energy problem how long will it take to we have it 20 years or 30 years? And would there be H2O nuclear fusion cars in 20 years? This most be cutting edge technology?

Hello, I remembering watching a video from SIGGRAPH 2006 of this Japaneses research firm using IR lasers to form "holograms" in the air by making small bubbles of plasma in the air which produce light visible to the human eye for a split second, acting much like a pixel. The plasma bubbles were produced by focusing the infrared light from the laser to a point at some distance in the air. I've asked someone who has also done this and they had stated that an energy density of 200mJ per 10ns can create this effect. I don't have the money for a Nd:YAG laser to try this myself, but I was wondering if other forms of electromagnetic radiation can create these plasma…

I tried to enter on this but don't see it, so I will speak without specific manufacturers' names. I got and love the construction of an electric garden cart, delivered for not quite $300, with two powered front wheels and a trailing third, well-castored with a greasefitting. This is a new class of tool(USA in this case) and it perfectly fills my need, carrying loads of firewood, and occassionally road rock mix for potholes. Two hundred pound load, and I don't have to support it. I was going to develop this for $500, and mentioned this a while back. I am 57 years old, live on bountiful land and enjoy chainsawing, but not wheelbarrowing, wood.

A terrific new interview with Artificial Intelligence guru Steve Grand can be found here.