QUESTION $2$

A square wind tunnel is employed to test an aircraft model. Air enters with a velocity of

$240$ kmph $.$ At the inlet of the wind tunnel, the static pressure and temperature of the air

is $120$ kPa and $27C$ respectively. Determine Mach number, stagnation temperature,

stagnation pressure and the stagnation density on a test model installed in the wind

tunnel. The effective dimensions of the tunnel are given as $1m1m$ square cross$-$

section. Determine the mass flow rate of the air passing through the wind tunnel. For air

assume $R=287\frac{J}{k}gK$;$=1\mathrm{.}4$