2. (50 Points) Explore the Pratt & Whitney F135 low-bypass turbofan engine with after- burner that powers the F-35 Lightning. Determine the stage compression ratios, turbine inlet temperatures, and potential efficiencies to achieve 191 kN of thrust as a result of exit velocity with afterburner when at subsonic flow at Mach 0.95 at 18,000 feet altitude. Consider the alternative performance at Mach 2.2 following an oblique shock around a 0 = 22° deflection angle. How does the system compare when at efficiency versus high performance? Extra Credit: (20 Points) Compare the F135 engine to other military aircraft engines to conduct similar performance characteristics.

Fig: 1