Convergent nozzles are only able to accelerate the gas up to local sonic (Mach 1) conditions. To reach high flight speeds, even greater exhaust velocities are required, and so a convergent-divergent nozzle is needed on high-speed aircraft.
Convergent nozzles are only able to accelerate the gas up to local sonic (Mach 1) conditi?ons. To reach high flight. speeds, even greater exhaust velocities are r?equ.ired, and so a convergent-divergent nozzle is needed on high-speed aircraft.