KingMammoth9460 KingMammoth9460

16-12-2022
Engineering

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An aircraft weighing900kNwhen empty has a wing area of226 m2. It is to take off at velocity of550 km/hand angle of attack20â. Assume the airport is at4500 mabove sea level. The wing has the characteristics of an airfoil shown in the figure below(C1vsÎ±). What is (i) the allowable weight of the cargo and (ii) induced drag coefficient if the wing span is30 m. The pressure variation in the atmosphere is given as: PRTCL=1,30kp=ps(1âTsBâz)BâRgsWhereRis the gas constant for air,Bis the lapse rate=dzdT=â km6.5 K,Ts=15âC,R=287J/K/kg, subscript s=sea-level. Ps=101.325kPa.gs=9.81 m/s/s

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