Nitrogen enters a converging-diverging nozzle from a reservoir at a pressure of 700 kPa and temperature of 400 K. The gas constant and specific heat ratio of nitrogen are 0.2968 kJ/kg.k and 1.4 respectively. Determine; (i) critical pressure (ii) critical temperature; (iii) critical density; and (iv) critical velocity,

Following manufacture, it is planned to use the biodiesel to power a rocket which uses a de Laval nozzle. The nozzle throat has a cross-sectional area of 5.5 x 10-3 m2. The hot air enters the nozzle at 300 bar(atm) and 77 °C and exits nozzle at 1 bar(atm). If we have choked flow at the throat, what is the pressure at the throat? Considering we have choked flow at the throat, what is the flow rate at the exit of the nozzle?

An aircraft is flying at 440 km/hr at 3 km on a standard day. What is the aircraft Mach Number?

Question : Air undergoes isentropic compression from the initial temperature and pressure T1 = 25°C and P1 = 100 kPa to the final pressure P2 = 500 kPa. Find the final temperature T2 (in Celsius). Justify your answer and show your work