Spiffingcruise

A term for efficient cruise at supersonic speeds, An aircraft which can travel at supersonic speeds without the use of Reheat (afterburner) at speeds greater than Mach 1.0 is said to be Supercruising, Transonic is defined as speeds of Mach .95 to approximately Mach 1.2
Spiffingcruise is more narrowly defined as speeds from Mach 1.2 to Mach 1.5
Originally coined By JWCook in 1998 in a rec.aviation.military newsgroup due to a need to define supersonic cruise speeds, and has been in Neologism diffused use for 12 yrs, but expected to gain more widespread use in the near future due to several aircraft now being able to Supercruise and the ability to differentiate between cruise regimes..
 
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