First PEGASUS EXPERIMENT

[deuem]

IF you are going to have pressurised mercury vapour flying about, then I'd seriously counsel some Proper Planning before you fire that bad boy up, around the issue of not breathing it in.

FB.

Say it did blow up, how long would it take for the mercury to cool down and fall like rain.

maybe one of those tall refrig boxes could contain it and also let it fly at least a few feet. trip wire the gas to turn off if there is no weight. At least it is contained or you will have even a bigger fire. Either way it could be fun. I would then wrap the bottom foot or so with sheet metal between you and it or an old matress. anything to hold the chunks of steel or blobs of mercury coming your way.

[robomont]

This is like the fifth time ive stated on this thread.its not under pressure.its got a vacuum pulled on it.you guys should really read the thread.this last time i heated it up.it didnt even get hot on top.

[deuem]

This is like the fifth time ive stated on this thread.its not under pressure.its got a vacuum pulled on it.you guys should really read the thread.this last time i heated it up.it didnt even get hot on top.

Yea, I got that part before Robo, So no air inside, just mercury. At some point in time it should float away or get hot or burst. At some point if there is enough Mercury inside I would thnk it would expand to fill the tube. If there was more than just that it would expand and create presure. Where are you in the ratio?  Deuem

[robomont]

I had two grams of mercury inside.no pressure formed under a 600+-F° temp.so i put like an ounce in it.still no pressure.so im going to buy torches next month.those small blue bottle type and get it to red hot.if it builds pressure then i will vent excess into water to condense mercury back to liquid.then i will pull a small vacuum at max temp of torches.so far the mercury vapor is pulling the heat away so fast through the coil that no pressure is forming . i can actually pick the unit up by grabbing it by hand.by grasping it at top.thats how i removed it from fire the other day.i have welding gloves but they are not necessary as the thing is barely warm on top.i havent given up completely on it but im beginning to lose a little hope.if you look at it and compare to design we were talking about on your other thread.there are alot of similarities.a magnetic field being pinched and oscilated.

[ArMaP]

It looks like the coil is helping dissipate all the heat.

[PLAYSWITHMACHINES]

Yes it will, but as Robo says it starts with a vacuum.
I did some rough calcs at the start of this thread, the mercury will expand some 15,000 times it's liquid volume when vaporised, i don't think the pressure will be very high, maybe 50 PSI at the most, easily contained, especially if you cap the schraeder valve after pulling the vacuum.

As to what happens when you fire it up, is anybodys guess

You only have to monitor 2 things, pressure & temperature, they are directly proportional, so if you raise the temp the pressure goes up with it.

Mercury vapour is highly poisonous, so be sure to stay upwind during trials

[robomont]

it never did gain pressure.it stayed in a vacuum as the bottom of pipe got cherry red.gave up at that point.

[Pimander]

Did the mercury go red?  Ooooh, you alchemist you. 

[PLAYSWITHMACHINES]

Mercury will expand about 14,000 times at the vapour point.

We figured a maximum of 500g for the area of Robo's chamber.

So we can go a whole lot further before it gets dangerous, IMO.

Of course, troops on the ground should be WELL informed, & have an escape route (Upwind) laid out, just in case.

Go fer it, Robopuff

[Pimander]

Mercury will expand about 14,000 times at the vapour point.

But you need to heat in an oxygen free environment by the sound of things.  The Mercury has become mercury oxide presumably (mercury oxide is red I think).  Oxides have a much higher BP normally and therefore will not vaporise at lower temps.

[PLAYSWITHMACHINES]

Well, we started with a vacuum, and O2 being only 4% or so, it should not have been a problem.
Of course, you can extract a lot of moisture (and O2) just by heating it{the metal}....

Maybe a dry run first, then pull the vacuum, then insert the mercury, and then heat it.....
Luke

[robomont]

Really ?the mercury turned red? not.
The steel pipe that is the container turned red.i even added way more mercury.like an ounce.and still no pressure.stayed in a vacuum the whole time.

Reading an article last night.it stated that mercury plasma actually has the lowest rf output at plasma state.compared to all other plasmas .thought that was strange.

[PLAYSWITHMACHINES]

The old mercury vapuor lamps gave off a very intense white light....

Yes it's a strange substance, the only liquid metal we have, it's got to be good for something better than lighting, LOL

The TR3-b plans say it's at very high pressure, but hey, any plasma is highly inductive & conductive.
They must have been using (if they did) mercury because of it's high density.

A lot of mass, spinning....hmmm....

[robomont]

Probably that rf deal i mentioned.

You me and elvis ? had a talk back a few months ago.you said magnetic confinement.thats what the pressure is.mercury is great plasma for the job intended.accelerating it plobably brings up some real high voltages .a collector on the rear and one on the nose.inside the plasma tube.maybe billions of volts.who knows about the current output.
The mag drive circuit in it is probably the power sucker .the accelerator coils.

[The Seeker]

Perhaps two circular tube runs, full of counter-rotating high density medium with a side of liquid nitrogen for cooling into the super-conductor range...


seeker