yliääninopeuden

Yliääninopeus refers to speeds exceeding the speed of sound. The speed of sound is approximately 343 meters per second (767 miles per hour) in dry air at 20 degrees Celsius (68 degrees Fahrenheit) at sea level. This speed can vary depending on the medium, temperature, and pressure.

Objects traveling at or above the speed of sound encounter significant changes in aerodynamic properties. As an object approaches the speed of sound, it experiences increasing drag and requires more power to accelerate further. When an object breaks the sound barrier and exceeds supersonic speeds, it creates a shock wave. This shock wave is responsible for the characteristic "sonic boom" that is often heard when an aircraft flies at supersonic speeds.

Supersonic flight is utilized in various applications, most notably in military and experimental aircraft. High-speed passenger transport has been explored, with the Concorde being a prominent example of a supersonic airliner. Research continues into advanced supersonic and hypersonic (speeds above Mach 5) technologies for both civilian and military purposes, focusing on efficiency, noise reduction, and material science. The study of supersonic phenomena is crucial for aerospace engineering and physics.