Current is measured in Amperes (usually just referred to as âAmpsâ). An ampere is defined as 6.241*10 18 electrons (1 Coulomb) per second passing through a point in a circuit. Amps are represented in equations by the letter âIâ.
The X-1, piloted by Chuck Yeager, was the first manned airplane to exceed the speed of sound in level flight and was the first of the X-planes, a series of American experimental rocket planes (and non-rocket planes) designated for testing of new technologies and often kept secret.
The fastest airplane ever that made into production was the American Lockheed-Martin SR-71 Blackbird, capable of in excess of MACH 3 at up to 85,000 feet.The fastest recorded â¦ speed for the Blackbird was over 1,905 knots or 2,193 mph in 1976.he fastest airplane ever that made into production was the American Lockheed-Martin SR-71 Blackbird, capable of in excess of MACH 3 at up to 85,000 feet.