A supersonic aircraft has an air intake ramp that can be rotated about the leadingedge O such that the shock from the leading edge meets the cowl lip as shown inthe figure. Select all the correct statement(s) as per oblique shock theory when theflight Mach number M is increased.(A) It is always possible to find a ramp settingRAMP such that the shock still meetsthe cowl lip (SHOCK remains the same).(B) IfRAMP is held fixed, the shock angleSHOCK will increase.(C) If M exceeds a critical value, it would NOT be possible to find a ramp settingRAMPsuch that the shock still meets the cowl lip (SHOCK remains the same).(D) Shock angle1 1sinSHOCK M−     

________ depends on the viscosity of shock fluid.Shock rate Spring rateShock heightShock type

A static shock is observed when:

________ depends on the viscosity of shock fluid.

The critical Mach number of an airfoil is attained when2 pointsThe Mach number somewhere on the airfoil is unityThe freestream Mach number is sonicThe freestream Mach number is supersonicThe Mach number everywhere on the airfoil is supersonic

Lift rapidly decreases once the critical or stalling angle of attack is exceeded this is becauseQuestion 34Select one:a.The airflow around the wing becomes turbulentb.The airflow separates from the top surface of the wingc.The drag exceeds the liftd.The airflow under the lower surface becomes turbulent