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Search: Posts Made By: Tall Paul
Showing results 1 to 22 of 22
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Forum: Aerodynamics
05-23-2004, 08:18 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: Comments

"Everyone knows that except in a wind tunnel air doesn't flow at all."
.
????
Local wind.... NE @ 12, Gust NNW @33
Forum: Aerodynamics
03-28-2004, 12:23 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

Here's the test setup and results of the variable position pitot tube experiment by Gale Craig.
"Dyed water manonmeters mounted in the airplane window were used to read pitot tube differential...
Forum: Aerodynamics
03-03-2004, 09:12 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

Monkey wrench on the way!

I just got this book from Amazon..
""Stop Abusing Bernoulli!
"How Airplanes Really Fly" by Gale Craig, a physisist at GM (retired) -$17.00 ISBN 0-9646806-2-9
He makes a very good case..
One...
Forum: Aerodynamics
02-24-2004, 12:36 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

.
I thought of doing some tufting with my CAP when looking for reasons for the CAP's odd behavior... The plane departed this mortal coil before I could do this. It takes two people.. one to fly-...
Forum: Aerodynamics
02-23-2004, 11:04 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

"Down and forward".... that's what the wash does. Standing on line with the runway centerline at Palmdale, after a 747 passes over when landing about 400 feet up, when the plane is on the runway...
Forum: Aerodynamics
02-22-2004, 02:55 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

Going thru some old (1999) stuff..
Came upon this....
from the Aviation Week web site.."Stalls and Dr. B." ... it's still there..
http://www.avweb.com/news/airman/184307-1.html
Forum: Aerodynamics
02-22-2004, 12:23 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

Doing some light reading last night in Abbott and Von Doenhoff...
I just LOVE it when it all comes together.
Forum: Aerodynamics
02-21-2004, 04:06 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

Lou the Tristar program had more influence from the guys we picked up from Boeing than Marietta, as I recall.
The Georgia guys did more of the autopilot stuff, while the Renton's did the aero.
...
Forum: Aerodynamics
02-21-2004, 04:02 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

Actually, Lou, it's in my nature as an engineering pedant to prefer to see terms which are defined as specific things to be used correctly, not modified without notice of the modification.
The...
Forum: Aerodynamics
02-21-2004, 01:25 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

We had a special nose made for the Tristar to put pressure probes and vanes out ahead of the aircraft to tests in turbulence and gusts..
ISTR 4 pressure probes pointing off-axis about 45 degrees...
Forum: Aerodynamics
02-20-2004, 08:39 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

" Lets say your at an EAA flyin and you see a homebuilt with a pitot tube mounted on top of the wing right at the high point of the airfoil... and along side of that pitot tube there is a static port...
Forum: Aerodynamics
02-20-2004, 08:19 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

All Tristars had provisions for a trailing cone. It was used on the first production acceptance flights to calibrate the airspeed system.
A conduit from the aft pressure bulkhead in the cabin up...
Forum: Aerodynamics
02-20-2004, 02:36 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

Like Lou, this stuff brings back memories.... and the old flight test motto... "Fighting back the forces of ignorance and superstition one more day" :)
Martin Simons* book is invaluable.. I got...
Forum: Aerodynamics
02-20-2004, 01:32 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: A bone of contention =

Well, bank, there is the "inflow" before the air gets to the wing to consider... :)
Forum: Aerodynamics
02-19-2004, 08:07 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: Bernoulli's equation

Any discovery can be found to be a part of a later discovery as more information is developed, with the later information including and ampliflying the early work.
So there!
Forum: Aerodynamics
02-19-2004, 05:16 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: RE: Bernoulli's equation

It is incorrect to refer to the change in pressure on the upper surface of an airfoil as a change in "static pressure" without considering the change on the bottom surface of the airfoil which occurs...
Forum: Aerodynamics
02-18-2004, 04:37 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: Bernoulli's equation

Ty, I have to admit I do not understand what you are saying about air pressures.
2 psi of dynamic pressure isn't "very high".
It's a lot more than a model will see, but its magnitude depends on...
Forum: Aerodynamics
02-17-2004, 11:15 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: Bernoulli's equation

Like I said... :)
Bernoulli's theory is a subset of Newtonian theory, which is a subset of Einsteinian theory
When you experience the downwash behind say a 747 on final, if you can get to where...
Forum: Aerodynamics
02-17-2004, 08:42 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: Bernoulli's equation

.
OFF TOPIC!
Forum: Aerodynamics
02-17-2004, 06:52 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: Bernoulli's equation

.
Well, no.
The postulated 1 psi change in static pressure to keep the total pressure the same is a change in indicated airspeed from 144 knots to 246 knots!.
This can't happen.
....
...
Forum: Aerodynamics
02-17-2004, 02:59 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: Bernoulli's equation

"So as the air speeds up to get around the airplane the dynamic pressure increases, lets say it goes up to 3 PSI... that means that the static pressure drops down to 14 PSI."
???
Whuffo you can't...
Forum: Aerodynamics
02-16-2004, 11:30 PM
Replies: 262
Views: 29,571
Posted By Tall Paul

RE: Bernoulli's equation

" This subject was beat to death last year,.."
It truly was... The Bernoullis vs the Newtonians..
No one wins.
Showing results 1 to 22 of 22


 
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