3.

A jet cruises with constant lift coefficient and constant Mach number of 0.82 in the stratosphere. The take-off mass with full fuel tanks is 271000 kg, the maximum fuel volume is 135000 liters, fuel density is 800 kg/m. The specific fuel consumption is 16 mg/(Ns). The aircraft has a specified range of 7200 NM.

a) Write down the appropriate equation for these flight conditions from which the range can be calculated. How is this equation named?

b) Calculate the aircraft's mass without fuel.

c) On its fuel reserves, the aircraft could fly additional 920 NM plus further 30 min. How far could the aircraft fly in these 30 min. if we assume that the 30 min. are also flown at cruise speed? How far could the aircraft fly on its fuel reserves?

d) Calculate the aircraft's lift-to-drag ratio

A jet cruises with constant lift coefficient and constant Mach number of 0.82 in the stratosphere. The take-off mass with full fuel tanks is 271000kg, the maximum fuel volume is 135000 liters, fuel density is 800kg/m3. The specific fuel consumption is 16mg/Ns). The aircraft has a specified range of 7200NM. a) Write down the appropriate equation for these flight conditions from which the range can be calculated. How is this equation named? b) Calculate the aircraft's mass without fuel. c) On its fuel reserves, the aircraft could fly additional 920NM plus further 30min. How far could the aircraft fly in these 30min. if we assume that the 30min. are also flown at cruise speed? How far could the aircraft fly on its fuel reserves? d) Calculate the aircraft's lift-to-drag ratio