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Old 04-05-2008, 10:32 PM   #7 (permalink)
Lazarus
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Quote:
Originally Posted by LostCause View Post
Not 100% sure, but air density values pulled out of books tend to be at STP. Standard temperature and pressure are not common values one would see at sea level. For example, I believe standard temperature is 0C...

I don't know how big a difference the true air density would make on Cd accuracy, but if the value was pulled out of a book it is probably off.

- LostCause
In the aviation world standard temperature and pressure is 29.92 @15 C at seal level.
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