(1954), French built delta wing supersonic research aircraft. SNCASE SE.212 Durandal (1956), experimental French built delta wing supersonic fighter. Mikoyan-Gurevich I-3 (1956) jet fighter prototype. Sukhoi T-3 (1956) Nord 1500 Griffon (1955, 1957), Griffon 1 flew in 1955, Griffon 2 flew in 1957, experimental mixed turbojet-ramjet fighter. Sukhoi P-1 (1957) Mikoyan-Gurevich I-7 (1957) jet fighter prototype. Mikoyan-Gurevich I-75 (1957) jet fighter prototype. Saunders-Roe SR.53 (1957), (UK) experimental mixed power jet fighter. Avro Canada CF-105 Arrow (1958), (Canada) North American X-15 (1959), first hypersonic aircraft and spaceplane. Rocket powered. Mikoyan-Gurevich Ye-150 family (1959, 1960, 1961). Sukhoi T-49 (1960) Bristol 188 (1962), (UK) British supersonic research aircraft. Mikoyan-Gurevich Ye-8 (1962) jet fighter prototype. Lockheed NF-104A (1963) modified F-104 Starfighter used for training astronauts for North American X-15 and Boeing X-20 Dyna-Soar programs. BAC TSR-2 (1964), (UK) Northrop HL-10 (1966), rocket powered Martin Marietta X-24A (1969) rocket powered. Northrop M2-F3 (1970) rocket powered General Dynamics F-16XL (1982) modified F-16, delta wing test demonstrator Grumman X-29 (1984) British Aerospace EAP (1986), (UK) McDonnell Douglas F-15 STOL/MTD (1988) heavily modified F-15 used in several NASA test programs including, STOL/MTD, ACTIVE, IFCS, Quiet Spike, SBRDC/ECANS, and HISTEC. Rockwell-MBB X-31 (1990) General Dynamics F-16 VISTA (1992) modified F-16, thrust vector control demonstrator Shaped Sonic Boom Demonstration (2003) SpaceShipOne (2003) first privately designed space plane NASA X-43 (2004) scramjet powered demonstrator Boeing X-53 Active Aeroelastic Wing (2006) modified F-18, wing warping demonstrator. Was also used as the High Alpha Research Vehicle and more recent sonic boom research. Boeing X-51 Waverider (2010) scramjet powered demonstrator Lockheed Martin X-59 QueSST (2018) commissioned by NASA See also Sound barrier References Bibliography Notes