Mach tuck is an aerodynamic effect whereby the nose of an aircraft tends to pitch downward as the airflow around the wing reaches supersonic speeds. This diving tendency is also known as tuck under.Aerodynamics For Naval Aviators, Hurt, Revised January 1965, Issued by The Office Of The Chief Of Naval Operations Aviation Training Division, p.219 The aircraft will first experience this effect at significantly below Mach 1.
