These calculators were written by David Apsley (University of Manchester). They rely on Javascript, so you may have to accept any browser warnings to permit them to run.
Many of the aerodynamics calculators were developed with the very able assistance of undergraduate project student Chris Gazard, whose original calculators may be found here.
See also Chris Gazard's page for viscosity laws and US Standard Atmosphere.
Date of last edit: 7 May 2007