The working section of a transonic wind tunnel has a cross-sectional area 0.5 m2. Upstream, where the cross-section area is 2 m2, the pressure and temperature are 4 x 105 Pa and 5°C, respectively.
Find the pressure, density and temperature in the working section at the point where the Mach number is 0.8.
Assume one-dimensional, isentropic flow.
