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Old 22nd Apr 2011, 19:04
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CliveL
 
Join Date: Dec 2010
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Dare I ask for the more complicated version?
Not sure I know how to answer this! I will need to think on it.

I had thought I might have some pretty pictures but I haven't got anything for low AoA. I find it difficult to respond to such a general quetion though. Could you be a little more specific as to the bits that interest you?

Sidebar: in a supersonic wind tunnel test, do you get a sonic boom?
Good question!

I THINK the answer is no. You will get the bow shock of course and this will be reflected off the tunnel walls so you must have a big tunnel or a small model to avoid these reflected waves interfering with the flow over the tail of the model, but the pressure rise on the tunnel floor is 'static' and the tunnel walls are massive steel construction. I may be wrong here, but I associate sonic booms with a rapid rise in pressure and a 'movement' of that pressure rise past the observer. In a tunnel you don't get this 'dynamic' effect (unless of course you can arrange to walk past the working section at 660 mph


CliveL

Edited after some thinking

Last edited by CliveL; 22nd Apr 2011 at 21:15.
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