Plenty of published work on trans-sonic aerodynamics, you’ll have to do your own leg work, I’m afraid...

Thanks for your note and advice

You may want to discuss this concept with your Iraq Air Force F-16 pilots who can experience it on a flight or perhaps you could get a flight to experience it first hand.

First you should become familiar with the various speeds corresponding with an aircraft. These would be Indicated Airspeed or IAS, Calibrated Airspeed or CAS, Equivalent Airspeed or EAS, True Airspeed or TAS and Ground speed or GS.

then compare the True Airspeed of the aircraft with the speed of sound at sea level under standard atmosphere (15 deg C and pressure of 1013.2 hpa).

if the True Airspeed of the aircraft reaches to the speed of sound then it is called Mach one(which has reached to the sound barrier).

the transonic region is when some parts of the aircraft has reached to the speed of sound whilst the other parts haven’t.