Today's Message Index:
----------------------
1. 07:43 AM - Re: UOTE Re: MF'ing air system! Yak-50 (Brian Lloyd)
2. 02:22 PM - Re: UOTE Re: MF'ing air system! Yak-50 (Yak Pilot)
3. 02:25 PM - Re: Yak-50 fly-by.... (Yak Pilot)
4. 02:36 PM - New to radials and hydro lock concerns (Craig Winkelmann)
5. 04:31 PM - Re: New to radials and hydro lock concerns (Scooter)
6. 07:29 PM - Re: MF'ing air system! Yak-50 (Tim Gagnon)
7. 07:55 PM - Re: Re: MF'ing air system! Yak-50 (Lynn Allen)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: UOTE Re: MF'ing air system! Yak-50 |
On Sep 15, 2007, at 7:14 PM, Craig Winkelmann, CFI wrote:
> <capav8r@gmail.com>
>
> Doc:
>
> Gotta give it to ya...pullin' out those old textbooks. I've packed
> mine away. However, from my engineering days, you are right on
> with Mr. Bernoulli. Air is a "fluid" that is in motion, hence his
> law applies.
Of course it applies and equally, of course, it doesn't matter. We
are dealing with a sudden transition, air, and such a large pressure
differential that we don't need to analyze it that much. We know
empirically that, a) given a hole of size 'x' and, b) a pressure
differential of 'y', that the flow will be 'z'. (BTW, this is how
your compression tester works.) The key here being that 'z' is a lot
smaller than what we want and the solution is to just make 'x' bigger.
So Tim, getting back to the MF'ing Yak-50 pneumatic system (which, by
the way, IS where we started), go look to see what is blocking the
flow of air to/from your storage tank (if anything). If something is,
fix it. If not, tell us and we will put our collective brains (the
sum of which might equal 1) and try to come up with another answer.
(Ya know, part of intelligence is knowing when you don't need to
launch a weather satellite -- that licking your finger and sticking
it up into the wind is sufficient to solve the problem. And, yes, as
a matter of fact I DO violate this principle all too often. :-)
--
Brian Lloyd 3191 Western Drive
brian HYPHEN 1927 AT lloyd DOT com Cameron Park, CA 95682
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
Antoine de Saint-Exupry
PGP key ID: 12095C52A32A1B6C
PGP key fingerprint: 3B1D BA11 4913 3254 B6E0 CC09 1209 5C52 A32A 1B6C
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: UOTE Re: MF'ing air system! Yak-50 |
Mr. Bernoulli stated that the faster that a fluid moves on or through a surface
the less pressure it exerts on that surface. Any time a fluid moves on or through
a surface, (such as air through a tube) then of course Mr. Bernoulli's law
applies. The question is, what does it apply TO? Further, does what it applies
to have anything to do with Tim's problem?
In most cases Mr. B's law applies to wing surfaces, venturi tubes, etc. It addresses
the speed and pressure and volume of air masses flowing ON OR THROUGH
something.
Now.. take a small pipe of say 1/4" diameter, and feed it with a regulated supply
of say 3000 PSI of air with standard day density. Have it connected to
a piston actuator with a 2 inch diameter. Have the piston lifting a 100 pound
load. Disregard friction losses in the piston. How fast will the piston move?
Now have an 1/8" air line of 10 feet connect to the above example with the 1/4"
line. Will the piston move:
A. Faster
B. Slower
C. Stay the same speed.
If faster or slower, by how much?
Show proof please.
Anwser this question using strictly Bernoulli's Law.
Go for it Doc.
Mark
"Craig Winkelmann, CFI" <capav8r@gmail.com> wrote:
Doc:
Gotta give it to ya...pullin' out those old textbooks. I've packed mine away. However,
from my engineering days, you are right on with Mr. Bernoulli. Air is
a "fluid" that is in motion, hence his law applies.
By the way, some folks don't think Bernoulli's Law applies to aircraft wings as the reason for them generating lift. Check out http://www.allstar.fiu.edu/aero/airflylvl3.htm for a different view of lift!!
Craig
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=134602#134602
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Yak-50 fly-by.... |
I think I know who it is too, but walls have ears.
Mark
Tim Gagnon <NiftyYak50@fuse.net> wrote:
This airplane looks very familiar......I think I know whose it is.
http://www.youtube.com/watch?v=Q7bl9AeS00Q
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=134310#134310
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | New to radials and hydro lock concerns |
Folks:
I am new to radial engines. The quick drains on these engines is usually
placed on the intake tubes on the lower cylinders. However, some times when
pulling the prop through, oil comes out the exhaust stack. Is this an
issue? What is the difference if the oil comes out the intake or exhaust?
Or is there any?
Thanks,
Craig
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: New to radials and hydro lock concerns |
Take a look at "An Introduction to the M14P for Flat-Engine Pilots"
by Fred Abramson. It should answer many questions:
http://staff.jccc.net/droberts/yak52/m14p_fa.html
[quote="Craig Winkelmann, CFI"]Folks:
I am new to radial engines. The quick drains on these engines is usually placed
on the intake tubes on the lower cylinders. However, some times when pulling
the prop through, oil comes out the exhaust stack. Is this an issue? What
is the difference if the oil comes out the intake or exhaust? Or is there any?
Thanks,
Craig
> [b]
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=134732#134732
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: MF'ing air system! Yak-50 |
I just got back from an airshow in Terre Haute...I will check in on the airplane
this week.
I saw a four ship 3 Yak-s and a CJ....I could not find their owners.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=134772#134772
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: MF'ing air system! Yak-50 |
Tim, has there been any word if you all are going to fly in for the Mustang Show
in Columbus later this month?
TIA,
Lynn
I just got back from an airshow in Terre Haute...I will check in on the airplane
this week.
I saw a four ship 3 Yak-s and a CJ....I could not find their owners.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=134772#134772
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|