The wing of an airplane has a polished aluminum skin. At a 1500 m altitude, it absorbs 100 W/m2 by solar radiation. Assuming that the interior surface of the wing??s skin is well insulated and the wing has a chord of 6 m length, i.e., L = 6 m, estimate the equilibrium temperature of the wing at a flight speed of 150 m/s at distances of 0.1 m, 1 m, and 5 m from the leading edge. Discuss the effect of a temperature gradient along the chord.GIVENAirplane wing with polished aluminum skinAltitude = 1500 mAbsorbed solar radiation (qsol/A) = 100 W/m2Cord length of wing (L) = 6 mFlight speed (U??) = 150 m/sASSUMPTIONSSteady stateInside surface of wing is well insulated, so heat loss from the inner surface is negligibleRadiative loss from the wing surface is negligibleFlight speed given is air speed not ground speedVariation of air properties with pressure is negligibleNeglect aerodynamicheating

Transcribed Image Text:

100 W/m? Alr U.= 150 m/s L-6m- х