Boundry Layer Control

Question

Boundry Layer Control

inventor222 (Mechanical)

(OP)

28 Oct 04 13:38

Hi,
Does anyone know of any recent studies or papers on Boundry Layer Control (particularly by suction)
Thanks,
Paul

rnordquest (Aeronautics) · Answer 1 · 2004-11-22 07:35:54

Not in particular but I wouldn't expect a recent study to completely contradict earlier studies. What you might be looking for is a study that is closer to your desired airfoil / speed combination. A 30 yrs old study of just what you need will very very likely be much better than a current study using the latest data reduction on the highest speed computer of something different.

Sparweb (Aerospace) · Answer 2 · 2004-12-08 14:52:29

Look up the C-17 heavy transport in Jane's. I think it employs boundary layer control AND blown flaps to reduce landing speeds and distances.

Steven Fahey, CET
"Simplicate, and add more lightness" - Bill Stout

sailoday28 (Mechanical) · Answer 3 · 2004-12-08 18:27:27

Pick up an old copy of Schlichting which has a good discussion of boundary layer and boundary later control.

MikeHalloran (Mechanical) · Answer 4 · 2004-12-08 22:49:11

You can control the boundary layer by sucking it away, but then the airfoil gets covered with bug remains, modifyings its profile, and the suction doesn't work so well anymore.

NASA learned that, by building such an airplane, maybe 20 years ago. They must have written _something_ down...

Mike Halloran
NOT speaking for
DeAngelo Marine Exhaust Inc.
Ft. Lauderdale, FL, USA

Sparweb (Aerospace) · Answer 5 · 2004-12-13 14:28:56

Guaranteed to find info here:
http://naca.larc.nasa.gov/

Steven Fahey, CET
"Simplicate, and add more lightness" - Bill Stout

btrueblood (Mechanical) · Answer 6 · 2004-12-13 14:56:47

SparWeb, thanks - didn't know the Larc/NACA server was back up again.

Sparweb (Aerospace) · Answer 7 · 2004-12-14 14:35:16

Since its reincarnation I've noticed the strangest thing: some reports are now available that weren't before, and others that were available have now disappeared.
Always bear in mind that the LARC website is the list of FREE reports, and there's an equally extensive list of reports for sale.

Steven Fahey, CET
"Simplicate, and add more lightness" - Bill Stout

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