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Old 8th May 2011 | 01:51
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Jane-DoH
 
Joined: Dec 2010
Posts: 414
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From: New York & California
Pugilistic Animus

Gotta see and test it...


I drew this up. The sweep angles and stuff aren't absolute but the idea is that it has almost no sweep in the middle similar to a spatular section and progressively sweeps more and more as you go outboard. Ogival.

yes, it has do do the volume/wetted area-ratio one need a large value to go faster, because the geometric volume increase must be higher than than wetted area increase...as measure of effective lift...
Can you give a simple explanation of what wetted area is?

well despite the mechanistic reasons, from continuity and conservation of energy and momentum, for either laminar and turbulent flow separation...Flow separation points are very important to attempt to predict, but because of Reynold's number effects, prediction of such terms as the skin friction drag and pitching moment coefficient.
The skin friction drag I understand -- higher reynolds numbers would mean more turbulent flow (I'm guessing stronger shockwaves, more heat produced).

The pitching moment co-efficient, is that due to high pressure spots formed on parts of the fuselage monkeying around with the center of pressure?

all of these items are very very difficult to predict with theory due to slip, when speaking about very high speed flight at the usual very high altitudes....
When you say the boundary layer slips? Do you mean that from the stagnation point the flow speeds back up at a slower rate than normal, and/or that the lower area of the flow accelerates up speed unusually slow compared to the upper layers?

I'm sure that I'm being very simplistic overall, but as a rule of thumb I generally learn best by grasping the basic concept first and then proceeding from there.
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