Quote:
Originally Posted by AeroMcAeroFace
Does it? Stagnation pressure is always related to speed, every car has a point at stagnation pressure.
You are deducing from speed that the pressure drop is higher. Doesn't that point say the faster you go the more drag increases?
"Delta-Ps can be a glimpse into efficiency" and speed, they tell you the speed more than anything.
"Seriously, this has gone from the sublime to the ridiculous." I completely agree Julian, this is the craziest aerodynamics deduction I have seen on this site (well second to the wind turbine thing you posted recently).
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1) stagnation pressure and base pressure would trend together. They don't exist independent of one another.
2) drag would vary as the square of the velocity, by definition.
3) power to overcome aerodynamic drag varies as the cube of the velocity, by definition.
4) any vehicle which experiences a drag reduction, will demonstrate a lower delta-P at any given velocity. Streamlined, really-low-drag cars would exhibit the absolute lowest delta-Ps.
5) Julian Edgar appears not to yet possess enough educational background to make such comments.