Aeronautical Calculators etc.

Some links to online calculators.

To calculate Reynolds numbers and similar values at any altitude:

http://www.convertit.com/Go/ConvertIt/Calculators/Science/Atmosphere_Calc.ASP

http://aero.stanford.edu/StdAtm.html


To check the atmosphere model at any altitude:

http://www.digitaldutch.com/atmoscalc/


Some other links:

http://aero.stanford.edu/wingcalc.html

http://exoaviation.webs.com/airplanewingcalculator.htm

http://www.desktopaero.com/appliedaero/preface/welcome.html


NOTE: I have not tested all of them, there may be bugs.