Critical Mach number and slow down as it travels around the aircraft's structure. When the aircraft's airspeed reaches the critical Mach number, the speed of the airflow in some areas near the airframe reaches the speed of sound, even though the aircraft itself has an airspeed lower than Mach 1.0. This creates a weak shock wave. As the aircraft exceeds the critical Mach number, its drag coefficient increases suddenly, causing dramatically increased drag, and, in an aircraft not designed for transonic or supersonic speeds, changes to the airflow over the flight control surfaces lead to deterioration in control of the aircraft. In aircraft
Mach and Daddy artists in this genre. "Daily" and "Unforgettable" were the label's first releases. Mach and Daddy Peter "Mach" Machore and Martin "Daddy" Machore, better known as Mach and Daddy, are Panamanian duo brothers of Spanish reggae and reggaeton. The first single for which they were recognized, "La Botella" (""The Bottle""), charted throughout Latin America and hit #1 on the "Billboard" chart. Other popular singles included "La Juma" and "El Que Se Fue Pa Barranquilla". The duo's concerts attracted as many as fifty thousand people. They tour and perform throughout Latin America and the U.S. Peter Machore is "Mach" and Martin Machore