Valveless PJ and magnetism

[parabellum]

I was thinking, in a working PJ we have a big amount of moving gases (particles) for and backwards, right? If a ferromagnetic (considering low frequencies 200Hz, iron) material can be used for (example) a part of exhaust wall section, will we get an electromagnetic activity around (or inside) this section? If yes, can we convert this magnetic activity (maybe using cupper wire) into electricity? What will be the consequence? Idea is not to produce electricity, my preoccupation is raising efficiency of the engine.

[metiz]

I've thought of that idea also in a slightly different way. I think you need to ionise the gas in a certain way for it to work. If it does work however, the electricity generated will be minute and not realy usable/ worth the aditional weight

[parabellum]

Is there more optimism on this claim or it is some how proven fact?

http://tech.groups.yahoo.com/group/VortexHeatExchanger/

I was reading true Plasma (physics) and Magneto hydrodynamics and cant understand if it really works.

[Jutte]

"Magneto hydrodynamics" - strange that you should mention that...
Anyone thought of using the theory of "Magneto hydrodynamics" as pertaining
to hot gases to effect a intake valve?

[Jutte]

Ok - re magnetism and pulse jets...usually any magnetic material
would suffer greatly from the heat-(unless you're of planetary core size...LOL)
Normally the colder you get the better the magnetic field gets - which
sort of rules out pulse jets.
However - thermodynamically generated electricity could work ( AKA the good old thermocouple - I read
of a guy who used to power his radio with thermocouples and a candle)....
acoustical generated electricity could work ( yep - plenty of sound energy there..LOL).
Re my idea of "Magneto plasma dynamics" - there has been research on controlling plasma
via electric fields (eg:military anti amour reactive capacitors etc, control of flame etc)
However - I have no idea of the power requirements to control the intake exhaust gases
of a pulse jet(could also be applied to tail pipe exhaust - is that what you're hinting at parabellum?)
My experience in magneto hydrodynamics and magneto plasma dynamics is pretty small.

[parabellum]

I do not really know what to expect of a Pulse jet (beside noise, heat and fun ). Trying to figure out what I have to understand what can be done with it. Electro pulses can maybe useful for timing (not sure what ). (only if at the end it is worth to complicate that much).

[Jutte]

Hi Parabellum,
The "American Institute of Aeronautics and Astronautics" paper entitled "Improving the Performance of a Valveless Pulse Combustor
using Unsteady Fuel Injection" - shows how they used the pulse jet pulses to run a pressure tranducer to run a pulse fuel delivery system.
You should be able to do an internet search to find it.
The paper also has a nice picture of the quartz combustion chamber they used.
They used a lot of pretty expensive equipment to get some good results - but a way out of my league ( and garage budget)
Their conclusion ? - design better combustion chambers that mix fuel better via the internal fuel air vortex -
design better fuel injectors - ( hey I can do that...LOL!)
Basically what Eric and James have been saying...which is very cool !

[ace_fedde]

Hi Parabellum,
The "American Institute of Aeronautics and Astronautics" paper entitled "Improving the Performance of a Valveless Pulse Combustor
using Unsteady Fuel Injection" - shows how they used the pulse jet pulses to run a pressure tranducer to run a pulse fuel delivery system.
You should be able to do an internet search to find it.

Here it is:
http://pulse-jets.com/phpbb3/viewtopic. ... 535#p66415

Also I should have a research paper about the electromagnetic effect in PJ's or PDE's, I'll try to find it.

....And still, no internet connection...

Fedde

[ace_fedde]

Also I should have a research paper about the electromagnetic effect in PJ's or PDE's, I'll try to find it.

Found it but somehow I can't upload anymore!?
Mike?

[metiz]

how big is the file >2mb?

upload to mediafire and share the link

[Mike Everman]

Also I should have a research paper about the electromagnetic effect in PJ's or PDE's, I'll try to find it.

Found it but somehow I can't upload anymore!?
Mike?

Yeah, <2mb

[tufty]

Also I should have a research paper about the electromagnetic effect in PJ's or PDE's, I'll try to find it.

Found it but somehow I can't upload anymore!?
Mike?

Set up an account on scribd.com with a disposable email address (mailinator.com is your friend) and bung it up there.

[Rocket Man]

Magnetisum does not work above 1100 deg F.

If you have a nail and a magnet the nail will stick to the magnet but if you heat the nail red hot it will no longer stick. Above 1100 deg F there is no magnetic attraction to the metal.

If you heat a magnet to 1100 deg F it looses all it magnetisum. When it cools it is no longer a magnet. You can use a coil of wire, power supply and capacitor bank to recharge the magnet.

[ace_fedde]

Rocketman,

We're not talking about magnetism in metal here. We're talking about a magetic field hopefully induced by a stream of ionized gas molecules.
If the gas gets hot enough the molecules will ionize. Question is though if and how you can induce electricity with it.
As said I have a research paper about the subject but it is 25 Mb and I can not upload it here. I will make an account somewhere to upload it.

Fedde

[metiz]

Hey Fedde

No need to make an account. Just go to mediafire.com and instantly upload any file without hassle. share the link here and anyone can dl it

How've you been by the way?