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Dimples On Model Aircraft Could Greatly Extend Range
On Nov 5, 3:16*pm, BobG wrote:
On Nov 5, 4:10*am, bbrought wrote: pressure drag due to seperated flow and skin friction drag. First, on majority of the drag is pressure drag due to the flow seperating as it drag as a smaller region of flow eventually seperates. The drag Reynolds numbers you sometimes get what is called a "seperation bubble". While still laminar, the flow seperates, but then it trailing edge if properly designed. These seperation bubbles are the point where the flow would have seperated, to prevent the formation of the seperation bubble. If well designed and placed, you towards the rear but without the seperation bubble. The overall drag ============================================ Remember that separate has a rat in it. Dammit, I always get it wrong English is my second/third language and it seems you eventually reach an age where you just stop improving... |
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