Comments by "José Veinte Genario -NISU" (@joseveintegenario-nisu1928) on "Revolutionizing Flight! The Amazing Potential of the CFM RISE Engine." video.

  1. There's a lot of info about Ducted Fans; above a certain airspeed, its efficiency is not that good, some large Turbofans look as Ducted Fans. Also, experiments exist describing the good results with something like a 'Trompe', where a jet of fluid drags another, larger mass, lower speed flow. At least, this has the potential to reduce noise, heat print. About efficiency, tests are welcome! What about 'Counter-propeller', by Wagner, patent US1609978? It's same as fixed vanes after rotating blades in a turbine engine. Blessings +
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