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What's the World's Fastest Manned Airplane?
Even this F/A-18C fighter jet can't match the speed record set in 1976 by a U.S. Air Force manned aircraft.
Credit: U.S. Navy | Lt. Peter Scheu

The world's fastest manned plane is the Lockheed SR-71 Blackbird. It set a record of 2,193.2 miles per hour (3,530 kilometers per hour) at Beale Air Force Base in California back in 1976. The U.S. Air Force used this manned aircraft from 1964 to 1998.

The fastest unmanned plane is the NASA X-43, which flew at 7,000 mph (11,265 kph) in 2004 (that's Mach 9.8 if you're keeping track). The X-43 flies on the back of a winged booster rocket, called a "stack," which is launched from a larger B52 bomber. After the booster rocket brings the stack to the target speed and altitude, it is discarded at 40,000 feet (12.2 kilometers). The jet then flies free using its own engine.

Despite reaching tremendous speeds, the X-43 only flies freely for about 10 seconds before crashing into the ocean (making it a very expensive single-use project).

The world's fastest propeller plane is the Russian-made Tupolev Tu-114, which has a maximum speed of 540 mph (869 kph). The Tupolev has held that record since 1960, even though another prop plane, the XF-84H Thunderscreech, was designed to fly at about 1,000 mph (1,609 kph). Unfortunately, the Thunderscreech didn’t actually work as planned due to its inherent instability.

While the Boeing 747 is supposedly the fastest of the big commercial jets, private jets tend to travel much faster. The Cessna Citation X, a private business jet that can carry up to seven passengers, has a top speed of 700 mph (1,127 kph).

In the future, a descendent of the Concorde may earn the title of fastest commercial plane. A prototype that could fly before 2020 is said to cruise at 1,350 mph (2,173 kph), or twice the speed of sound, whisking a dozen wealthy passengers from London to Sydney in a mere four hours.