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Showing results for tags 'airflow'.
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If MS users have aerodynamics questions, I can try to answer them. I know (and hope) others will chime in, too. I plan on giving an Oshkosh Forum this year on this topic. Now that I think about it, would anyone attend if I try one at Sun-N-Fun, too? I'll start with a very controversial topic: the Mooney laminar flow wing. Laminar flow is a very elusive condition. Any bug, dimple, step, etc. will trip the flow from laminar to turbulent. The picture above (of Scott Sellmeyer's beautiful "J") shows beautiful, turbulent flow. People misinterpret separated flow as turbulent flow. We are really talking about the small boundary layer right at the surface. With laminar or turbulent flow, flow velocity on the surface is 0. Hard to believe but true. This is why dust stays on your airplane … even after you fly. Let's have some fun!
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I had occasion to fly out of Heathrow a month ago on an Airbus A380 giant. After we broke ground on the climb out I shot this cool video of the left inboard engine's nacelle strake generating its vortex trail back over the wing. I was surprised at the boundary layer thickness. It's hard to scale due to the size of the wing but there was actually about 2 feet between the wing and the trail. Thought everyone would enjoy some pilot-aero geek stuff. Sorry it wasn't edited better.- 3 replies
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