| |
Main
Date: 27 Sep 2006 19:37:05
From: Lefty Skywalker
Subject: Kegs pressure capability?
|
We had a discussion at work today on "low-cost rocket motors". Anyone
know how much pressure a keg can take if all the safety stuff is removed
and the closures reinforced? How thick is the metal, and what sort of
metal is it?
Before anyone chimes in to tell us not to get hurt, etc, we are pros.
There would be considerable testing. But I'd want to get a feel for it
at least.
--
Daniel O. Miller
"The most beautiful experience we can have is the mysterious. It is the
fundamental emotion which stands at the cradle of true art and true
science. Whosoever does not know it and can no longer marvel, is as good
as dead, and his eyes are dimmed." - Albert Einstein
WWYD? (-o-) <* > Genesis 49:17
Real email address: darth dot lefty at golf mike able india lima.
|
|
| |
Date: 27 Sep 2006 21:41:34
From: notbob
Subject: Re: Kegs pressure capability?
|
On 2006-09-28, Lefty Skywalker <dmille15@hotmail.com > wrote:
> Before anyone chimes in to tell us not to get hurt, etc, we are pros.
"Pro" morons? If ya' wanna kill yourselves, cut stright to out of
cert scuba tanks.
nb
|
| | |
Date: 27 Sep 2006 20:05:38
From: Lefty Skywalker
Subject: Re: Kegs pressure capability?
|
notbob wrote:
> On 2006-09-28, Lefty Skywalker <dmille15@hotmail.com> wrote:
>
>> Before anyone chimes in to tell us not to get hurt, etc, we are pros.
>
> "Pro" morons? If ya' wanna kill yourselves, cut stright to out of
> cert scuba tanks.
Thanks for nothing. And scuba tanks are too heavy and have small end
closures you couldn't fit a mandrel through. And we would be buying new
kegs and doing thorough design and testing.
Besides, if rockets were safe they wouldn't be weapons, now would they?
A rocket motor case typically has ratings for burst pressure and max
expected operating pressure. BP is where it pops and MEOP is the
pressure if everything is at the wrong end of the tolerances. BP is
usually about 25% higher than MEOP, and MEOP is about 10% higher than
the normal hot firing pressure. They are usually designed to blow out
the nozzle if over-pressurized. A keg, being something that gets tossed
around, run into with forklifts, dropped, etc. probably has a safety
factor more like 4. If it's rated for 150 psi and has a 300% margin,
that looks like an MEOP of 450 psi and a hot firing of 400, which is
enough to be worthwhile.
--
Daniel O. Miller
"The most beautiful experience we can have is the mysterious. It is the
fundamental emotion which stands at the cradle of true art and true
science. Whosoever does not know it and can no longer marvel, is as good
as dead, and his eyes are dimmed." - Albert Einstein
WWYD? (-o-) <* > Genesis 49:17
Real email address: darth dot lefty at golf mike able india lima.
|
| | | |
Date: 27 Sep 2006 23:51:19
From: notbob
Subject: Re: Kegs pressure capability?
|
On 2006-09-28, Lefty Skywalker <dmille15@hotmail.com > wrote:
> around, run into with forklifts, dropped, etc. probably has a safety
> factor more like 4. If it's rated for 150 psi and has a 300% margin,
> that looks like an MEOP of 450 psi and a hot firing of 400, which is
> enough to be worthwhile.
Hell yeah!... corny kegs are perfect for the job. Buy 50! Pack 'em
all with solid/liquid propellants and rule the World.
What did you say your address was?
nb
|
| | | | |
Date: 28 Sep 2006 18:25:27
From: Lefty Skywalker
Subject: Re: Kegs pressure capability?
|
notbob wrote:
> On 2006-09-28, Lefty Skywalker <dmille15@hotmail.com> wrote:
>
>> around, run into with forklifts, dropped, etc. probably has a safety
>> factor more like 4. If it's rated for 150 psi and has a 300% margin,
>> that looks like an MEOP of 450 psi and a hot firing of 400, which is
>> enough to be worthwhile.
>
> Hell yeah!... corny kegs are perfect for the job. Buy 50! Pack 'em
> all with solid/liquid propellants and rule the World.
>
> What did you say your address was?
Propulsion Branch
Naval Air Warfare Center
China Lake Naval Air Station
California.
Since you asked.
Yeah, we already rule the world. I'm just looking for ways to do it on
the cheap.
--
Daniel O. Miller
"The most beautiful experience we can have is the mysterious. It is the
fundamental emotion which stands at the cradle of true art and true
science. Whosoever does not know it and can no longer marvel, is as good
as dead, and his eyes are dimmed." - Albert Einstein
WWYD? (-o-) <* > Genesis 49:17
Real email address: darth dot lefty at golf mike able india lima.
|
| | | |
Date: 28 Sep 2006 15:47:39
From: John 'Shaggy' Kolesar
Subject: Re: Kegs pressure capability?
|
On Wed, 27 Sep 2006 20:05:38 -0700, <dmille15@hotmail.com > wrote:
> A rocket motor case typically has ratings for burst pressure and max
> expected operating pressure. BP is where it pops and MEOP is the
> pressure if everything is at the wrong end of the tolerances. BP is
> usually about 25% higher than MEOP, and MEOP is about 10% higher than
> the normal hot firing pressure. They are usually designed to blow out
> the nozzle if over-pressurized. A keg, being something that gets tossed
> around, run into with forklifts, dropped, etc. probably has a safety
> factor more like 4. If it's rated for 150 psi and has a 300% margin,
> that looks like an MEOP of 450 psi and a hot firing of 400, which is
> enough to be worthwhile.
I would probably not rely on a bunch of newsgroup users for that data
though. IMO, if you're really going to do this, contact the keg
manufacturer and ask them.
John.
|
| | | | |
Date: 28 Sep 2006 18:29:59
From: Lefty Skywalker
Subject: Re: Kegs pressure capability?
|
John 'Shaggy' Kolesar wrote:
> On Wed, 27 Sep 2006 20:05:38 -0700, <dmille15@hotmail.com> wrote:
>> A rocket motor case typically has ratings for burst pressure and max
>> expected operating pressure. BP is where it pops and MEOP is the
>> pressure if everything is at the wrong end of the tolerances. BP is
>> usually about 25% higher than MEOP, and MEOP is about 10% higher than
>> the normal hot firing pressure. They are usually designed to blow out
>> the nozzle if over-pressurized. A keg, being something that gets tossed
>> around, run into with forklifts, dropped, etc. probably has a safety
>> factor more like 4. If it's rated for 150 psi and has a 300% margin,
>> that looks like an MEOP of 450 psi and a hot firing of 400, which is
>> enough to be worthwhile.
>
> I would probably not rely on a bunch of newsgroup users for that data
> though. IMO, if you're really going to do this, contact the keg
> manufacturer and ask them.
Yeah, that's in the R&D proposal I'm writing tonight.
Here's a head scratcher: Why no fiberglass or carbon fiber kegs?
--
Daniel O. Miller
"The most beautiful experience we can have is the mysterious. It is the
fundamental emotion which stands at the cradle of true art and true
science. Whosoever does not know it and can no longer marvel, is as good
as dead, and his eyes are dimmed." - Albert Einstein
WWYD? (-o-) <* > Genesis 49:17
Real email address: darth dot lefty at golf mike able india lima.
|
| | | | | |
Date: 29 Sep 2006 09:56:38
From: Mark R
Subject: Re: Kegs pressure capability?
|
"Lefty Skywalker" <dmille15@hotmail.com > wrote in message news:451c7661$0
>
> Here's a head scratcher: Why no fiberglass or carbon fiber kegs?
That's the easiest question asked so far. Cost and life expectancy. When
cornies where first designed and built carbon fiber probably wasn't even a
"black ops" project. As for fiber glass versus stainless, I'd guess
longevity and reactivity of the syrups stored in side. Plus imagine what a
tank designed to hold 5 gallons of pressurized syrup would have looked like
back when fiberglass was in it's infancy, not to mention the porosity issues
back then.
Mark R
|
| | | |
Date: 28 Sep 2006 12:42:40
From:
Subject: Re: Kegs pressure capability?
|
: A rocket motor case typically has ratings for burst pressure and max
: expected operating pressure. BP is where it pops and MEOP is the
: pressure if everything is at the wrong end of the tolerances. BP is
: usually about 25% higher than MEOP, and MEOP is about 10% higher than
: the normal hot firing pressure. They are usually designed to blow out
: the nozzle if over-pressurized. A keg, being something that gets tossed
: around, run into with forklifts, dropped, etc. probably has a safety
: factor more like 4. If it's rated for 150 psi and has a 300% margin,
: that looks like an MEOP of 450 psi and a hot firing of 400, which is
: enough to be worthwhile.
Most corny kegs I've seen are rated at 130 psi. If you use your safety factor
of 4, you get a quick calculation:
130 psi * 4 safety = 520 psi = 3.6 MPa
5.5 gallons = 0.0208 m^3
That's just under 75 kJ. If all that energy were released in 10ms (like with a tank
rupture), that'd be 7.5 MW, or 10,000 horsepower forcing bits of stainless steel
shrapnel everywhere. That's enough energy to lift a car weighing 3000 lbs over 1800
feet into the air.
I would highly recommend NOT putting enough gas in it to rupture with that
sort of energy involved. Burst testing is safe when using an *incompressible fluid*
as a working medium... that way the stored energy is much less.
-Cory
--
*************************************************************************
* Cory Papenfuss, Ph.D., PPSEL-IA *
* Electrical Engineering *
* Virginia Polytechnic Institute and State University *
*************************************************************************
|
| | | | |
Date: 28 Sep 2006 10:00:57
From: Mark R
Subject: Re: Kegs pressure capability?
|
<papenfussDIESPAM@juneauDOTmeDOTvt.edu > wrote in message news:efgg00$ar9>
> Most corny kegs I've seen are rated at 130 psi. If you use your safety
factor
> of 4, you get a quick calculation:
>
130 psi makes since. I have an old type class A fire extinguisher that held
water and was charged with 125 psi of air. They make great back-pack squirt
guns. They're about the same as a keg. As for the power out put, huh? That's
just a touch above my head. 10,000 horsepower, 3000 lbs over 1800 feet into
the air. I've seen the results of acetylene tank explosions and I can't even
picture that lifting a car a quarter of a mile into the air. Even though
there is a significant release of instantaneous power wouldn't there be some
sort of time / power dissipation factor. Unless there was something very
volatile in the corny keg I couldn't picture a rupture under a vehicle doing
more than shredding the undercarriage. Not like I'm intending to experiment
or ever use a good homebrew keg for something other than beer. :-)
Mark R
|
| | | | | |
Date: 28 Sep 2006 15:35:29
From:
Subject: Re: Kegs pressure capability?
|
: 130 psi makes since. I have an old type class A fire extinguisher that held
: water and was charged with 125 psi of air. They make great back-pack squirt
: guns. They're about the same as a keg. As for the power out put, huh? That's
: just a touch above my head. 10,000 horsepower, 3000 lbs over 1800 feet into
: the air. I've seen the results of acetylene tank explosions and I can't even
: picture that lifting a car a quarter of a mile into the air. Even though
: there is a significant release of instantaneous power wouldn't there be some
: sort of time / power dissipation factor. Unless there was something very
: volatile in the corny keg I couldn't picture a rupture under a vehicle doing
: more than shredding the undercarriage. Not like I'm intending to experiment
: or ever use a good homebrew keg for something other than beer. :-)
The computations were a quick, back-of-the-envelop type... but the ballpark
figures are there to give an appropriate order of magnitude. As (hopefully) anyone
with a SCUBA certifcation has been beat with repeatedly, it is that a compressed gas
cylinder contains a TREMENDOUS amount of energy. The dive shop I got certified drove
it home by saying it's got enough energy to life a full-size freight-train locomotive
a few feet into the air. The automobile is just a more familiar reference. Also, a
scuba cylinder holds much more pressure (3000psi-ish), but is also a much smaller
volume (1/4-ish).
Yes there is a "time / power dissipation factor"... that's why I qualified my
statement by saying a 10ms explosion time. If you dissipate the same energy over a
longer period of time, the *power* is less (by definition), but the same amount of
work was done. Also, your statement of "significant release of instantaneous power"
isn't quite physically correct. A "significant release of energy" "instantaneously"
will provide "significant release of energy"/"instantaneously short period of time"
amount of power... again, by definition.
The lifting car analogy assumes 100% utilization of all of the stored
energy... certainly not going to happen by simply exploding it under the car.
Still... even if only 0.1% it were utilized, I don't think I'd want shrapnel propelled
at my head with enough energy to lift a 3000lb car 1800/1000=1.8 feet off the ground.
Anyone wanna call Mythbusters?
-Cory
--
*************************************************************************
* Cory Papenfuss, Ph.D., PPSEL-IA *
* Electrical Engineering *
* Virginia Polytechnic Institute and State University *
*************************************************************************
|
| | | | | | |
Date: 28 Sep 2006 17:45:30
From: John 'Shaggy' Kolesar
Subject: Re: Kegs pressure capability?
|
On Thu, 28 Sep 2006 15:35:29 +0000 (UTC), <papenfussDIESPAM@juneauDOTmeDOTvt.edu > wrote:
>
> Anyone wanna call Mythbusters?
Not if you want accurate answers, although they'd probably have fun making
it blow up.
John.
|
| | | | |
Date: 28 Sep 2006 18:26:50
From: Lefty Skywalker
Subject: Re: Kegs pressure capability?
|
papenfussDIESPAM@juneauDOTmeDOTvt.edu wrote:
> : A rocket motor case typically has ratings for burst pressure and max
> : expected operating pressure. BP is where it pops and MEOP is the
> : pressure if everything is at the wrong end of the tolerances. BP is
> : usually about 25% higher than MEOP, and MEOP is about 10% higher than
> : the normal hot firing pressure. They are usually designed to blow out
> : the nozzle if over-pressurized. A keg, being something that gets tossed
> : around, run into with forklifts, dropped, etc. probably has a safety
> : factor more like 4. If it's rated for 150 psi and has a 300% margin,
> : that looks like an MEOP of 450 psi and a hot firing of 400, which is
> : enough to be worthwhile.
>
> Most corny kegs I've seen are rated at 130 psi. If you use your safety factor
> of 4, you get a quick calculation:
>
> 130 psi * 4 safety = 520 psi = 3.6 MPa
> 5.5 gallons = 0.0208 m^3
>
> That's just under 75 kJ. If all that energy were released in 10ms (like with a tank
> rupture), that'd be 7.5 MW, or 10,000 horsepower forcing bits of stainless steel
> shrapnel everywhere. That's enough energy to lift a car weighing 3000 lbs over 1800
> feet into the air.
>
> I would highly recommend NOT putting enough gas in it to rupture with that
> sort of energy involved. Burst testing is safe when using an *incompressible fluid*
> as a working medium... that way the stored energy is much less.
I'm planning on putting about 40 lb of low explosives in it.
We do burst testing in an armored room with water.
--
Daniel O. Miller
"The most beautiful experience we can have is the mysterious. It is the
fundamental emotion which stands at the cradle of true art and true
science. Whosoever does not know it and can no longer marvel, is as good
as dead, and his eyes are dimmed." - Albert Einstein
WWYD? (-o-) <* > Genesis 49:17
Real email address: darth dot lefty at golf mike able india lima.
|
| | | | | |
Date: 28 Sep 2006 20:36:18
From: The Artist Formerly Known as Kap'n Salty
Subject: Re: Kegs pressure capability?
|
Lefty Skywalker wrote:
> papenfussDIESPAM@juneauDOTmeDOTvt.edu wrote:
>> : A rocket motor case typically has ratings for burst pressure and max
>> : expected operating pressure. BP is where it pops and MEOP is the :
>> pressure if everything is at the wrong end of the tolerances. BP is :
>> usually about 25% higher than MEOP, and MEOP is about 10% higher than
>> : the normal hot firing pressure. They are usually designed to blow
>> out : the nozzle if over-pressurized. A keg, being something that
>> gets tossed : around, run into with forklifts, dropped, etc. probably
>> has a safety : factor more like 4. If it's rated for 150 psi and has
>> a 300% margin, : that looks like an MEOP of 450 psi and a hot firing
>> of 400, which is : enough to be worthwhile.
>>
>> Most corny kegs I've seen are rated at 130 psi. If you use your
>> safety factor of 4, you get a quick calculation:
>>
>> 130 psi * 4 safety = 520 psi = 3.6 MPa
>> 5.5 gallons = 0.0208 m^3
>>
>> That's just under 75 kJ. If all that energy were released in 10ms
>> (like with a tank rupture), that'd be 7.5 MW, or 10,000 horsepower
>> forcing bits of stainless steel shrapnel everywhere. That's enough
>> energy to lift a car weighing 3000 lbs over 1800 feet into the air.
>>
>> I would highly recommend NOT putting enough gas in it to rupture
>> with that sort of energy involved. Burst testing is safe when using
>> an *incompressible fluid* as a working medium... that way the stored
>> energy is much less.
>
> I'm planning on putting about 40 lb of low explosives in it.
>
> We do burst testing in an armored room with water.
I expect video.
--
(Replies: cleanse my address of the Mark of the Beast!)
Teleoperate a roving mobile robot from the web:
http://www.swampgas.com/robotics/rover.html
Coauthor with Dennis Clark of "Building Robot Drive Trains".
Buy several copies today!
|
| | | | | | |
Date: 28 Sep 2006 18:57:59
From: Lefty Skywalker
Subject: Re: Kegs pressure capability?
|
The Artist Formerly Known as Kap'n Salty wrote:
> Lefty Skywalker wrote:
>> papenfussDIESPAM@juneauDOTmeDOTvt.edu wrote:
>>> : A rocket motor case typically has ratings for burst pressure and
>>> max : expected operating pressure. BP is where it pops and MEOP is
>>> the : pressure if everything is at the wrong end of the tolerances.
>>> BP is : usually about 25% higher than MEOP, and MEOP is about 10%
>>> higher than : the normal hot firing pressure. They are usually
>>> designed to blow out : the nozzle if over-pressurized. A keg, being
>>> something that gets tossed : around, run into with forklifts,
>>> dropped, etc. probably has a safety : factor more like 4. If it's
>>> rated for 150 psi and has a 300% margin, : that looks like an MEOP of
>>> 450 psi and a hot firing of 400, which is : enough to be worthwhile.
>>>
>>> Most corny kegs I've seen are rated at 130 psi. If you use your
>>> safety factor of 4, you get a quick calculation:
>>>
>>> 130 psi * 4 safety = 520 psi = 3.6 MPa
>>> 5.5 gallons = 0.0208 m^3
>>>
>>> That's just under 75 kJ. If all that energy were released in 10ms
>>> (like with a tank rupture), that'd be 7.5 MW, or 10,000 horsepower
>>> forcing bits of stainless steel shrapnel everywhere. That's enough
>>> energy to lift a car weighing 3000 lbs over 1800 feet into the air.
>>>
>>> I would highly recommend NOT putting enough gas in it to rupture
>>> with that sort of energy involved. Burst testing is safe when using
>>> an *incompressible fluid* as a working medium... that way the stored
>>> energy is much less.
>>
>> I'm planning on putting about 40 lb of low explosives in it.
>>
>> We do burst testing in an armored room with water.
>
> I expect video.
It's not very interesting. It's just a fast squirt. They don't explode.
--
Daniel O. Miller
"The most beautiful experience we can have is the mysterious. It is the
fundamental emotion which stands at the cradle of true art and true
science. Whosoever does not know it and can no longer marvel, is as good
as dead, and his eyes are dimmed." - Albert Einstein
WWYD? (-o-) <* > Genesis 49:17
Real email address: darth dot lefty at golf mike able india lima.
|
| |
Date: 28 Sep 2006 15:11:49
From: John 'Shaggy' Kolesar
Subject: Re: Kegs pressure capability?
|
On Wed, 27 Sep 2006 19:37:05 -0700, <dmille15@hotmail.com > wrote:
> We had a discussion at work today on "low-cost rocket motors". Anyone
> know how much pressure a keg can take if all the safety stuff is removed
> and the closures reinforced? How thick is the metal, and what sort of
> metal is it?
I don't know about a Sankey keg, but a Corny keg should take 100+ PSI.
John.
|
| |
Date: 29 Sep 2006 02:32:58
From: Eric Scantlebury
Subject: Re: Kegs pressure capability?
|
"Lefty Skywalker" <dmille15@hotmail.com > wrote in message
news:451b349d$0$97265$892e7fe2@authen.yellow.readfreenews.net...
> Before anyone chimes in to tell us not to get hurt, etc, we are pros.
Then why are you asking a beer group about rocket "motors"? Like you said -
your the pro, go with it. LOL! I have found that you'll get real good
answers about beer though. I have yet to ask about the problem with my
truck transmission here so I'm not sure what type of answer I'll get.....
Personally, my experience with rockets is of the model variety (and I've put
some solid engines up pretty far), but I'd be scared to use a keg in that
manor. Obviously, YMMV.
P.S. as a pro I'm surprised you use the term motor in referring to a rocket
"engine". ;-)
|
| | |
Date: 28 Sep 2006 21:14:16
From: Lefty Skywalker
Subject: Re: Kegs pressure capability?
|
Eric Scantlebury wrote:
> "Lefty Skywalker" <dmille15@hotmail.com> wrote in message
> news:451b349d$0$97265$892e7fe2@authen.yellow.readfreenews.net...
>
>> Before anyone chimes in to tell us not to get hurt, etc, we are pros.
>
> Then why are you asking a beer group about rocket "motors"? Like you said -
> your the pro, go with it. LOL! I have found that you'll get real good
> answers about beer though. I have yet to ask about the problem with my
> truck transmission here so I'm not sure what type of answer I'll get.....
>
> Personally, my experience with rockets is of the model variety (and I've put
> some solid engines up pretty far), but I'd be scared to use a keg in that
> manor. Obviously, YMMV.
>
> P.S. as a pro I'm surprised you use the term motor in referring to a rocket
> "engine". ;-)
Engines have moving parts. I'm talking about rocket motors.
--
Daniel O. Miller
"The most beautiful experience we can have is the mysterious. It is the
fundamental emotion which stands at the cradle of true art and true
science. Whosoever does not know it and can no longer marvel, is as good
as dead, and his eyes are dimmed." - Albert Einstein
WWYD? (-o-) <* > Genesis 49:17
Real email address: darth dot lefty at golf mike able india lima.
|
| | | |
Date: 29 Sep 2006 09:48:28
From: Eric Scantlebury
Subject: Re: Kegs pressure capability?
|
"Lefty Skywalker" <dmille15@hotmail.com > wrote in message
news:451c9ce1$0$97269$892e7fe2@authen.yellow.readfreenews.net...
>>
>> P.S. as a pro I'm surprised you use the term motor in referring to a
>> rocket "engine". ;-)
>
> Engines have moving parts. I'm talking about rocket motors.
I've always used (well, not really, actually I use them rather
interchangeably) the reverse (and the wink at the end is a nod to the
understanding that this is debated ad nausea in rocketry).
A motor implies an external power source to generate the mechanics. Such as
electricity that supplies the mechanism energy to move.
http://www.answers.com/topic/motor
Where an engine supplies it's own combustibility turning the energy into
motion without an external source.
http://www.answers.com/topic/engine
But like I said - the point has been argued back and forth forever :)
|
| | | | |
Date: 29 Sep 2006 15:41:17
From: Joel
Subject: Re: Kegs pressure capability?
|
Eric Scantlebury <test@test.com > wrote:
Hey, finally another homebrewer (I assume) at Brown!
>A motor implies an external power source to generate the mechanics. Such as
>electricity that supplies the mechanism energy to move.
...
>Where an engine supplies it's own combustibility turning the energy into
>motion without an external source.
...
>But like I said - the point has been argued back and forth forever :)
Yeah. A high school teammate of mine was heavily into
cars, and one of his pet peeves was calling that thing under
the bonnet that powers an automobile a "motor." It was an
*engine*, dangit! Then again, there is no end to the car
places named something like "XXXX Motors" (American Motors,
anyone?) so who knows? :-)
--
Joel Plutchak
"Things just fall apart." - Now They'll Sleep (Belly)
|
| | | | | |
Date: 29 Sep 2006 13:28:32
From: Eric Scantlebury
Subject: Re: Kegs pressure capability?
|
"Joel" <plutchak@see.headers > wrote in message
news:efjeqt$ank$1@badger.ncsa.uiuc.edu...
> Eric Scantlebury <test@test.com> wrote:
>
> Hey, finally another homebrewer (I assume) at Brown!
Indeed. :)
|
| | | | |
Date: 29 Sep 2006 18:59:28
From: Lefty Skywalker
Subject: Re: Kegs pressure capability?
|
In the industry, if you say motor you mean solid propellant, and if you
say engine you mean liquid propellant and probably pump-fed, and if you
say thruster you mean liquid or gas propellant and probably pressure fed.
--
Daniel O. Miller
"The most beautiful experience we can have is the mysterious. It is the
fundamental emotion which stands at the cradle of true art and true
science. Whosoever does not know it and can no longer marvel, is as good
as dead, and his eyes are dimmed." - Albert Einstein
WWYD? (-o-) <* > Genesis 49:17
Real email address: darth dot lefty at golf mike able india lima.
|
| | | | | |
Date: 02 Oct 2006 01:36:26
From: Eric Scantlebury
Subject: Re: Kegs pressure capability?
|
"Lefty Skywalker" <dmille15@hotmail.com > wrote in message
news:451dcec8$0$97219$892e7fe2@authen.yellow.readfreenews.net...
> In the industry,
I would think that would depend on which "country" your "industry" was based
in.
|
| | | | | | |
Date: 01 Oct 2006 19:00:48
From: Lefty Skywalker
Subject: Re: Kegs pressure capability?
|
Eric Scantlebury wrote:
> "Lefty Skywalker" <dmille15@hotmail.com> wrote in message
> news:451dcec8$0$97219$892e7fe2@authen.yellow.readfreenews.net...
>> In the industry,
>
> I would think that would depend on which "country" your "industry" was based
> in.
I can't speak for "France".
--
"Daniel" O. "Miller"
"The most beautiful experience we can have is the mysterious. It is the
fundamental emotion which stands at the cradle of true art and true
science. Whosoever does not know it and can no longer marvel, is as good
as dead, and his eyes are dimmed." - Albert Einstein
WWYD? (-o-) <* > Genesis 49:17
Real email address: darth dot lefty at golf mike able india lima.
|
| | |
Date: 28 Sep 2006 20:34:59
From: Wheat
Subject: Re: Kegs pressure capability?
|
"Eric Scantlebury" <Eric_Scantlebury@verizon.net > wrote in message
news:uB%Sg.3274$0Y2.469@trndny09...
>
> "Lefty Skywalker" <dmille15@hotmail.com> wrote in message
> news:451b349d$0$97265$892e7fe2@authen.yellow.readfreenews.net...
>
>> Before anyone chimes in to tell us not to get hurt, etc, we are pros.
>
> Then why are you asking a beer group about rocket "motors"? Like you
> said - your the pro, go with it. LOL! I have found that you'll get real
> good answers about beer though. I have yet to ask about the problem with
> my truck transmission here so I'm not sure what type of answer I'll
> get.....
>
> Personally, my experience with rockets is of the model variety (and I've
> put some solid engines up pretty far), but I'd be scared to use a keg in
> that manor. Obviously, YMMV.
>
> P.S. as a pro I'm surprised you use the term motor in referring to a
> rocket "engine". ;-)
"motor" is the correct term:
Engine - A device that uses energy to produce mechanical motion. In
rocketry, the term is often used interchangeably with Motor, though Motor is
the more accurate term.
http://www.geocities.com/CapeCanaveral/Lab/7247/glossary.html
Now why were you "surprised"? I'm surprised that you used the term "rocket"
when referring to a missle! ;-)
|
| | | |
Date: 28 Sep 2006 21:18:01
From: Lefty Skywalker
Subject: Re: Kegs pressure capability?
|
Wheat wrote:
> "Eric Scantlebury" <Eric_Scantlebury@verizon.net> wrote in message
> news:uB%Sg.3274$0Y2.469@trndny09...
>> "Lefty Skywalker" <dmille15@hotmail.com> wrote in message
>> news:451b349d$0$97265$892e7fe2@authen.yellow.readfreenews.net...
>>
>>> Before anyone chimes in to tell us not to get hurt, etc, we are pros.
>> Then why are you asking a beer group about rocket "motors"? Like you
>> said - your the pro, go with it. LOL! I have found that you'll get real
>> good answers about beer though. I have yet to ask about the problem with
>> my truck transmission here so I'm not sure what type of answer I'll
>> get.....
>>
>> Personally, my experience with rockets is of the model variety (and I've
>> put some solid engines up pretty far), but I'd be scared to use a keg in
>> that manor. Obviously, YMMV.
>>
>> P.S. as a pro I'm surprised you use the term motor in referring to a
>> rocket "engine". ;-)
>
> "motor" is the correct term:
>
> Engine - A device that uses energy to produce mechanical motion. In
> rocketry, the term is often used interchangeably with Motor, though Motor is
> the more accurate term.
> http://www.geocities.com/CapeCanaveral/Lab/7247/glossary.html
>
> Now why were you "surprised"? I'm surprised that you used the term "rocket"
> when referring to a missle! ;-)
Rocket refers to the type of propulsion system - a jet reaction system
with all fuel and oxidizer on board. A missile can have any number of
types of propulsion, including rockets, ducted rockets, liquid and solid
fuel ramjets, scramjets, turbofans, turbojets, turboprops, pulsejets,
and so on.
--
Daniel O. Miller
"The most beautiful experience we can have is the mysterious. It is the
fundamental emotion which stands at the cradle of true art and true
science. Whosoever does not know it and can no longer marvel, is as good
as dead, and his eyes are dimmed." - Albert Einstein
WWYD? (-o-) <* > Genesis 49:17
Real email address: darth dot lefty at golf mike able india lima.
|
| | | | |
Date: 01 Oct 2006 09:02:01
From: Wheat
Subject: Re: Kegs pressure capability?
|
"Lefty Skywalker" <dmille15@hotmail.com > wrote in message
news:451c9dc3$0$97244$892e7fe2@authen.yellow.readfreenews.net...
> Wheat wrote:
>> "Eric Scantlebury" <Eric_Scantlebury@verizon.net> wrote in message
>> news:uB%Sg.3274$0Y2.469@trndny09...
>>> "Lefty Skywalker" <dmille15@hotmail.com> wrote in message
>>> news:451b349d$0$97265$892e7fe2@authen.yellow.readfreenews.net...
>>>
>>>> Before anyone chimes in to tell us not to get hurt, etc, we are pros.
>>> Then why are you asking a beer group about rocket "motors"? Like you
>>> said - your the pro, go with it. LOL! I have found that you'll get
>>> real good answers about beer though. I have yet to ask about the
>>> problem with my truck transmission here so I'm not sure what type of
>>> answer I'll get.....
>>>
>>> Personally, my experience with rockets is of the model variety (and I've
>>> put some solid engines up pretty far), but I'd be scared to use a keg in
>>> that manor. Obviously, YMMV.
>>>
>>> P.S. as a pro I'm surprised you use the term motor in referring to a
>>> rocket "engine". ;-)
>>
>> "motor" is the correct term:
>>
>> Engine - A device that uses energy to produce mechanical motion. In
>> rocketry, the term is often used interchangeably with Motor, though Motor
>> is the more accurate term.
>> http://www.geocities.com/CapeCanaveral/Lab/7247/glossary.html
>>
>> Now why were you "surprised"? I'm surprised that you used the term
>> "rocket" when referring to a missle! ;-)
>
> Rocket refers to the type of propulsion system - a jet reaction system
> with all fuel and oxidizer on board. A missile can have any number of
> types of propulsion, including rockets, ducted rockets, liquid and solid
> fuel ramjets, scramjets, turbofans, turbojets, turboprops, pulsejets, and
> so on.
It was a joke, duh! :)
|
| | | |
Date: 01 Oct 2006 16:31:03
From: Lefty Skywalker
Subject: Re: Kegs pressure capability?
|
Wheat wrote:
> "Eric Scantlebury" <Eric_Scantlebury@verizon.net> wrote in message
> news:uB%Sg.3274$0Y2.469@trndny09...
>> "Lefty Skywalker" <dmille15@hotmail.com> wrote in message
>> news:451b349d$0$97265$892e7fe2@authen.yellow.readfreenews.net...
>>
>>> Before anyone chimes in to tell us not to get hurt, etc, we are pros.
>> Then why are you asking a beer group about rocket "motors"? Like you
>> said - your the pro, go with it. LOL! I have found that you'll get real
>> good answers about beer though. I have yet to ask about the problem with
>> my truck transmission here so I'm not sure what type of answer I'll
>> get.....
>>
>> Personally, my experience with rockets is of the model variety (and I've
>> put some solid engines up pretty far), but I'd be scared to use a keg in
>> that manor. Obviously, YMMV.
>>
>> P.S. as a pro I'm surprised you use the term motor in referring to a
>> rocket "engine". ;-)
>
> "motor" is the correct term:
>
> Engine - A device that uses energy to produce mechanical motion. In
> rocketry, the term is often used interchangeably with Motor, though Motor is
> the more accurate term.
> http://www.geocities.com/CapeCanaveral/Lab/7247/glossary.html
>
> Now why were you "surprised"? I'm surprised that you used the term "rocket"
> when referring to a missle! ;-)
The discretionary projects manager was surprised to see me mention beer
kegs. He was also surprised to see that I had requested "$6,000k",
which I explained was a typo. I was surprised he actually read the thing.
--
Daniel O. Miller
"The most beautiful experience we can have is the mysterious. It is the
fundamental emotion which stands at the cradle of true art and true
science. Whosoever does not know it and can no longer marvel, is as good
as dead, and his eyes are dimmed." - Albert Einstein
WWYD? (-o-) <* > Genesis 49:17
Real email address: darth dot lefty at golf mike able india lima.
|
| | | | |
Date: 02 Oct 2006 10:29:48
From: Mark R
Subject: Re: Kegs pressure capability?
|
"Lefty Skywalker" <dmille15@hotmail.com > wrote in message news:45204ef9$0
>
> The discretionary projects manager was surprised to see me mention beer
> kegs. He was also surprised to see that I had requested "$6,000k",
> which I explained was a typo. I was surprised he actually read the thing.
And any kegs that don't get blown to smithereens might find an appropriate
adoptive family at the end of the project? Then you could make some real
"rocket fuel." ;-)
Mark R
|
| |
Date: 28 Sep 2006 14:15:42
From: Scott L
Subject: Re: Kegs pressure capability?
|
notbob wrote:
> On 2006-09-28, Lefty Skywalker <dmille15@hotmail.com> wrote:
>
> > Before anyone chimes in to tell us not to get hurt, etc, we are pros.
>
> "Pro" morons? If ya' wanna kill yourselves, cut stright to out of
> cert scuba tanks.
What, a guy can't have a little fun? Last year some friends of mine
wanted to see how much pressure they could get inside a 55 gallon steel
drum. They took it to the center of an empty 40 acre field and hooked
it to an air compressor and got 500 yards away behind a dirt berm. It
took a while but the thing eventually blew the top of the barrel off,
quite dramatically.
It was pretty safe.
Scott
|
| |
Date: 28 Sep 2006 14:08:57
From: phaeton
Subject: Re: Kegs pressure capability?
|
Lefty Skywalker wrote:
>
If you don't kill yourself, I want videos and pics!!
w00t!
-phaeton
|
| |
Date: 28 Sep 2006 21:58:11
From:
Subject: Re: Kegs pressure capability?
|
Lefty Skywalker wrote:
> notbob wrote:
> >
> > What did you say your address was?
>
> Propulsion Branch
> Naval Air Warfare Center
> China Lake Naval Air Station
> California.
>
> Since you asked.
Cool. You work with the Flight Sim guys then? More curious than
anything. Answer as you are able.
>
> Yeah, we already rule the world. I'm just looking for ways to do it on
> the cheap.
>
> --
> Daniel O. Miller
>
> "The most beautiful experience we can have is the mysterious. It is the
> fundamental emotion which stands at the cradle of true art and true
> science. Whosoever does not know it and can no longer marvel, is as good
> as dead, and his eyes are dimmed." - Albert Einstein
>
> WWYD? (-o-) <*> Genesis 49:17
>
> Real email address: darth dot lefty at golf mike able india lima.
|
|
