3. X43A Scramjet 7,500mph
The X-43A attached to the B-52B which carries it up to altitude
Photo: nasa
The X-43A Scramjet is currently listed as the fastest aircraft on record with a mind-blowing top speed around 7,500mph. It’s an unmanned experimental vehicle that was designed for hight altitude hypersonic travel. The X-43A required a mothership to carry it up to 30,000 feet or so and then it would release it.