Question 2 (Total: 10 marks) a) b) i) ii) i) ii) iii) An aircraft has the longitudinal characteristic equation: s¹+5.08s³ + 13.2s² +0.72s +0.52 = 0 Apply Ruth's Criteria to evaluate

the longitudinal stability of the aircraft Appraise number of root that has positive real part. Use a side view of aircraft, apply the concept of relative wind to explain the difference among, AOA, pitch angle and flight path angle The roll rate response to aileron input of an aircraft is given by the following transfer function: p(s) -1.62 {(s) (s + 1.232) = deg -/deg Appraise the flight behavior by sketching the time history plot of p vs time, when the aircraft is subjected to an impulse aileron input Sketch the corresponding time history plot of roll angle vs time. What is the time constant?