NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Boundary-layer transition effects on airplane stability and controlSurface contamination of laminar-flow airfoils can significantly modify the location of transition from laminar-to-turbulent boundary-layer flow. The contamination can be the result of insect debris, environmental effects such as ice crystals and moisture due to mist or rain, surface damage, or other contamination adhering to the surface. Location and mode of transition have a dominant effect on the lift-and-drag characteristics of a lifting surface. The influences of laminar boundary-layer flow behavior on airplane stability and control are examined through theoretical results and experimental (wind-tunnel and free-flight) data. For certain airfoils with a relatively steep pressure recovery it is shown that loss of laminar flow near the leading edge can result in premature separation of the turbulent boundary layer and, consequently, in loss of lift and control effectiveness. Aerodynamic modifications which minimize boundary-layer transition effects on airplane stability and control are also discussed.
Document ID
19860062970
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Van Dam, C. P.
(California, University Davis, United States)
Holmes, B. J.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 12, 2013
Publication Date
August 1, 1986
Subject Category
Aircraft Stability And Control
Report/Patent Number
AIAA PAPER 86-2229
Accession Number
86A47708
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available