upwash

Wieselsberger showed that when a bird flaps its wings it creates a current known as upwash; essentially, air lifts up and rises round the tips of the wings as they flap.

The Guardian World News 2009

This is due to an aerodynamic phenomenon known as upwash that causes the air flowing over a bird's wings to curl upwards as it passes the wingtips.

Popular Science - New Technology, Science News, The Future Now 2009

Energy is recovered from leading edge upwash as circulation rounds the leading edge to produce centrifugal pressure reduction, known as "leading edge suction," and forward thrust.

Archive 2009-05-01 2009

Forward recirculation carries upwash into which the wing flies.

[flight theory] and its application to sailing 2009

Energy is recovered from leading edge upwash as circulation rounds the leading edge to produce centrifugal pressure reduction, known as "leading edge suction," and forward thrust.

[flight theory] and its application to sailing 2009

Forward recirculation carries upwash into which the wing flies.

Archive 2009-05-01 2009

Ignoring upwash, they say about how much air needs to be diverted: Diverting so much air down is a strong argument against lift being just a surface effect that is only a small amount of air around the wing accounts for the lift, as implied by the popular explanation.

Unthreaded #21 « Climate Audit 2007

The raft sucked toward the wet glow and was jerked downwards behind it, the reflected upwash spinning the raft and ejecting it onward.

Genellan- Planetfall Gier, Scott 2005

Then suddenly he saw Jack running across the sand in a bathing suit, and entering the shallow rim of a long, swift upwash.

Kangaroo 2004

The Skimmer flexed in air and hung for an instant, rolling, before it fell with a smack and was gone in an upwash of bright foam.

Across The Sea Of Suns Benford, Gregory, 1941- 1984