Physics:Freestream
From HandWiki
The freestream is the air far upstream of an aerodynamic body, that is, before the body has a chance to deflect, slow down or compress the air. Freestream conditions are usually denoted with a [math]\displaystyle{ \infty }[/math] symbol, e.g. [math]\displaystyle{ V_\infty }[/math], meaning the freestream velocity.
References
- Anderson, John D., 1989. Introduction to Flight, 3rd Ed. McGraw-Hill
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