So if you multiply torque (in pound-feet) by engine speed (in RPM) and divide the product by 5,252, RPM is converted to radians per second and you can get from torque to horsepower -- from pound-feet to foot-pounds per second..
Did it explode? Nope! You can still see it flying. Then what was that sound? It was a sonic boom. A sonic boom is a loud sound kind of like an explosion. It's caused by shock waves created by any object that travels through the air faster than the speed of sound. Sonic booms create huge amounts of sound energy. When an object moves through the air, it makes pressure waves in front of and behind it.
All the air in front of the craft gets pushed together, can't get out of its own way â and when that magic number gets hit â the air finally breaks free and crashes behind the plane causing a sonic boom. The boom is literally an explosion of sound waves that travel with the plane as long as it's flying at that speed.