Propane Flow Rate

hinote · Post by **hinote** » Sun Jan 25, 2004 2:11 am

Hey guys:

Does anybody have information (or URL's) on flow-rate tables for delivering gaseous propane?

I have a target flow rate, and I need to know what the orifice area is to deliver that at the engine.

I'm betting you Albion engine guys have something to offer.

Thanks.

Bill H.
Acoustic Propulsion Concepts, Inc.

Post by **Mike Everman** » Mon Jan 26, 2004 2:00 am

I second that request! Hi, Bill.

Viv · Post by **Viv** » Mon Jan 26, 2004 12:25 pm

I don't have any hting to hand but we did use a web site full of java calculators that had one for propane flow though a nozzle.

I will see if I can find the link.

Viv

hinote · Post by **hinote** » Tue Jan 27, 2004 11:53 pm

Viv wrote:I don't have any hting to hand but we did use a web site full of java calculators that had one for propane flow though a nozzle.

I will see if I can find the link.

Viv

Hey--thanks, Viv; just got back from a couple days off.

Did you find anything yet?

Bill H.
Acoustic Propulsion Concepts, Inc.

Viv · Post by **Viv** » Wed Jan 28, 2004 11:01 am

hinote wrote:
Viv wrote:I don't have any hting to hand but we did use a web site full of java calculators that had one for propane flow though a nozzle.

I will see if I can find the link.

Viv
Hey--thanks, Viv; just got back from a couple days off.

Did you find anything yet?

Bill H.
Acoustic Propulsion Concepts, Inc.

Sorry not yet I have been on a crash course learning about pressure jets in the other forum so I havent had a chance, but I will have a look today.

I cant remember if it was Bruno or Gary thqat sent me the link in the first place for the site?

Viv

Rescyou · Post by **Rescyou** » Sun Mar 07, 2004 6:16 pm

A wee bit late but none the less, various propane specs, tables, calculators:

http://www.propane.ca/Resources/

s.

milisavljevic · Post by **milisavljevic** » Sun Mar 07, 2004 8:12 pm

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Post by **Mike Everman** » Sun Mar 07, 2004 11:19 pm

Oh, M. How hard could it be? ;-P

I'm sure liquid fueling will be iterative and tedious or simple and fortuitous. One or the other, most likely the former!

We've gotten superstitious around my shop; we've had some mechanical systems that were so finicky that they seemingly were dependent on presence or absence of "happy thoughts" in the lab, or whether or not we'd hung our "lucky rubber chicken" nearby! I will be employing all of these tools and more...

Graham C. Williams · Post by **Graham C. Williams** » Sun Mar 07, 2004 11:33 pm

Dear M.
If you can get much below 2.0 lb/lbf/hr without augmenters and fancy accounting I'd like to see that.
Graham.

Graham C. Williams · Post by **Graham C. Williams** » Sun Mar 07, 2004 11:48 pm

Perhaps I should add that I think Paul Schmidt was going down the ‘right road’ with some of his designs. With the Phoenix motor and developments of his ideas I’m looking at near turbojet SFC figures but it’s all numbers and until the tests are made I wouldn’t like to say. At the moment I’m happy just to explore the upper and lower combustion limits.
Graham.

milisavljevic · Post by **milisavljevic** » Mon Mar 08, 2004 1:21 am

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milisavljevic · Post by **milisavljevic** » Mon Mar 08, 2004 1:35 am

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Graham C. Williams · Post by **Graham C. Williams** » Mon Mar 08, 2004 10:48 am

Dear m.
Yes, you hint at the bigger question. It's not the static thrust or SFC we should be too concerned with. It has to be said that people put an undue significance on these figures. It is really the performance at speed that matters; what happens when the reverse (tailpipe) flow reduces and/or the augmenter becomes less efficient.
How does the engine perform as you approach the upper required flight parameters? That is the question.

Having said all that 1.8 lb/lbf/hr would impress me.
Graham.

Post by **Mike Everman** » Tue Mar 09, 2004 3:31 am

My interest is mostly with static vertical thrust, but I do want to simulate forward velocity on my test stand to see what's what with straight designs. I can't remember the reference I read that talked about ram air in a non-rectified Escopette making for very low SFC. Or was it the Four pipe?

milisavljevic · Post by **milisavljevic** » Tue Mar 09, 2004 5:14 am

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