Operational History
After proving the aerodynamic aspects and systems of the Griffon, the 1500-01 was retired in April 1957. Flying continued with the Griffon II after its first flight on 23 January 1957. With Major André Turcat at the controls, the Griffon II reached a top speed of Mach 2.19 (2,330 km/h or 1,450 mph) in 1958, thus proving the soundness of the basic design. But the aircraft met several technical difficulties, such as kinetic heating, due to the lack of temperature resistant materials, such as Inconel or Titanium, in the parts of the airframe experiencing the highest temperatures. The ramjet was found to work well at high speed, but was unstable at medium speeds.
Production of operational versions, dubbed Super Griffon did not take place as it was found that the requirements could be met and exceeded with less complex and cheaper aircraft such as the Dassault Mirage III.
Read more about this topic: Nord 1500 Griffon
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