![]() ![]() Supersonic refers to a speed that is faster than the speed of sound. ![]() This is why subsonic flight is generally smoother and quieter than supersonic flight. When an object travels at subsonic speeds, the air molecules in front of it are able to move out of the way, allowing the object to move through the air with relatively little resistance. In other words, subsonic speeds are those that are slower than the speed of sound, which is also known as Mach 1. Subsonic refers to a speed that is below the speed of sound, which is approximately 343 meters per second or 1,125 feet per second in dry air at sea level and 20 ☌ (68 ☏). Now that we have a basic understanding of what subsonic and supersonic mean, let’s explore the differences between the two in more detail. This is typically measured in Mach numbers, with Mach 1 being the speed of sound. On the other hand, supersonic means that an object is travelling at a speed that is faster than the speed of sound. More specifically, subsonic means that an object is travelling at a speed that is less than the speed of sound, which is approximately 767 miles per hour (1,235 kilometers per hour) at sea level. ![]() Subsonic refers to speeds that are below the speed of sound, while supersonic refers to speeds that are above the speed of sound. Subsonic and supersonic are both legitimate terms used to describe the speed of an object. We should clarify which term is the proper word to use. But what do these terms actually mean? Let’s dive into the world of aeronautics and explore the differences between subsonic and supersonic. When it comes to discussing the speed of an object, two terms that often come up are subsonic and supersonic. ![]()
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