From Wikipedia, the free encyclopedia
Jump to: navigation, search
This article is about a term in aerodynamics. For other uses, see Freestream (disambiguation).

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 \infty symbol, e.g. V_\infty, meaning the freestream velocity


  • Anderson, John D., 1989. Introduction to Flight, 3rd Ed. McGraw-Hill