Standard Atmosphere The environme Bo3 16.885J/ESD. 35J-Sept for aircrat aft design The" standard atmosphere is a reference condition every day is different Temperature T, pressure p, density p are functions of altitude h Standard sea level conditions p=101325x105N/m2=2162bf2 T=288160K=518.7R p=1.2250kgm3=000278sug/ft Handy calculator http://aero.stanford.edu/stdatm.html16.885J/ESD.35J - Sept 2003 Standard Atmosphere: The Environment for Aircraft Design • The “standard atmosphere” is a reference condition. – Every day is different. • Temperature T, pressure p, density U are functions of altitude h. • Standard sea level conditions – p = 1.01325x105 N/m2 = 2116.2 lb/ft2 – T = 288.16 0K = 518.7 0R – U = 1.2250 kg/m3 = 0.00278 slug/ft3 • Handy calculator http://aero.stanford.edu/StdAtm.html