measuring jet ports

[bkb0000]

i'm wondering if there already exists some kind of sensor that'll accurately measure very small, very fast jets of very hot plasma in the 30k-50k PSI range. jet port sizes range from .0620 to .0900.

i'm sure there's no gage that exists for my application- or at least nothing non-proprietary. but if i could get a hold of a sensor of some sort, i'm sure i could retrofit.

anybody know of anything like this already in existence, and at least semi-readily available?

thanks

 

[cloa]

You might want to specify what you mean by
very small
very fast jets
very hot plasma

 

[bkb0000]

very small - .0620-.0900
very fast - gas at the port will be in excess of 50k PSI
very hot - 45,000F

 

[MintJulep]

And it might also be helpful to specify the property that you want to measure.

 

[bkb0000]

PSI

 

[cloa]

Pressure is a not an exit velocity- you'll have to estimate that for yourself as (1) you haven't specified what this plasma jet flows out into and (2) don't know how many engineers can do Plasma flow analysis (sounds tricky).

 

[bkb0000]

the velocity actually doesn't matter, or maybe it's all that matters. the need is to be able to find a median measurement for relative comparison- i suppose plasma velocity, if that's all we had to measure, would work equally well as PSI after port. as to what the plasma flows into- for testing purposes, the plasma will flow into whatever we're using to measure PSI/velocity. for a simplistic example, we could simply glue a giant party balloon to the port, execute the blast, then weigh the balloon. obviously that isn't practical, due to inconsistencies in party balloon manufacturer and the fact that we're dealing with plasma jets that would obliterate anything resembling a party balloon.

if that helps.. i'm starting to think this is a project for an engineering firm. i'm not an engineer, obviously. but i figured i'd start a discussion and see what i could see.

also, 45,000 is likely way over-estimated.. in giving it a moments thought, temps are probably closer to 15,000F. not that it matters much, since anything over a couple thousand surely puts us in the realm of very unique and rare sensing equipment.