AME 436 Assigned: Wednesday 5/1/13 Problem Set #7 • “Due ...

c) "Scramjet" with no inlet diffuser, normal shock, heat addition at constant temperature untilMach number is supersonic again, 2 nd normal shock, and finally isentropic expansion until exitpressure = ambient pressure.Problem #2 (25 points)A hypersonic aircraft is in level flight at M 1 = 10 at 100,000 ft altitude and uses H 2 fuel. Theambient air temperature is 227K and the ambient pressure is 0.0108 atm. The maximum pressureinside the engine is limited to 100 atm by structural considerations. Using GASEQ, determine theperformance of this pressure-limited stoichiometric-burning H 2 -air engine in the following way:a. Choose as reactants “hydrogen-air flame” and as products “H2/O2/N2 products.” Thedefault mixture strength is stoichiometric, so you shouldn’t have to change that. Choose227K and 0.0108 atm as the reactant conditions. Then select Problem Type “Adiabaticcompression/expansion” and check the “frozen composition” box. Choose a productpressure P 2 = 100 atm and hit the “Calculate” button. Note the enthalpy (h 1 ) and soundspeed (c 1 ) of the reactants at ambient conditions, and calculate the flight velocity u 1 = c 1 M 1 .