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The Eurocopter X³ (X-Cubed) is a retired experimental high-speed compound helicopter developed by Airbus Helicopters (formerly Eurocopter).A technology demonstration platform for "high-speed, long-range hybrid helicopter" or H³ concept, [1] the X³ achieved 255 knots (472 km/h; 293 mph) in level flight on 7 June 2013, setting an unofficial helicopter speed record.
The Mi-6 was by far the world's largest helicopter when it was designed in 1954–56; with a maximum load capacity of 12,000 kg. [2] It was also the world's fastest helicopter; with a top speed of 300 km/h (190 mph). In its early days, the Mi-6 set many world records, including one for sheer circuit speed at 340 km/h (211 mph).
Uncrewed torpedo speed claims range from 60 knots (110 km/h; 69 mph) for the British Spearfish torpedo [64] to 200 knots (370 km/h; 230 mph) for the Russian VA-111 Shkval. [ 65 ] ^ a b Ground effect vehicles (a.k.a. "Wing-In-Ground effect vehicles") are classified as maritime vessels, rather than aircraft, by the International Maritime ...
Although the official record for fastest piston-engined aeroplane in level flight was held by a Grumman F8F Bearcat, the Rare Bear, with a speed of 850.23 km/h (528.31 mph), the unofficial record for fastest piston-engined aeroplane in level flight is held by a British Hawker Sea Fury at 880 km/h (547 mph).
On 23 July 1963, a modified Super Frelon flew a record-breaking flight, setting the new FAI absolute helicopter world speed record with a recorded speed of 217.7 mph (350.4 km/h). Both civilian and military versions of the Super Frelon were produced; the type was predominantly sold to military customers.
The helicopter was designed by Marat Tishchenko, ... then the world's largest and fastest production ... Maximum speed: 295 km/h (183 mph, 159 kn) Cruise ...
(Top) 1 Development. 2 Design. 3 ... The fenestron has been credited with helping the Gazelle to become the world's fastest helicopter in its ... Maximum speed: 310 ...
While it may have been designed as the fastest propeller-driven aircraft, this goal was never realized due to severe stability problems. [7] This record speed is also inconsistent with data from the National Museum of the United States Air Force, which gives a top speed of "only" 840 km/h (520 mph; 450 kn) or Mach 0.70. [8] McDonnell XF-88B