NOTE: DO NOT MOVE ON TO THE NEXT PAGE WITHOUT ATTEMPTING THESE THREE QUESTIONS!

Consider an aircraft with the following aerodynamic & mission specification: 

• CD0 = 0.0172; k = 1.23; AR = 7.6

• Cruise Mach = 0.84 at 34,000 ft

• Throttle setting 77%

• Cruise weight = 0.97 % MTOW

• Residual rate of climb allowance = 2.1 m/s

Answer the following three questions in turn:

Q1 What is the density of the atmosphere at the cruise altitude, in kg/m³

, to 4 d.p.?