Open Rotor: Jet Engine with a Mohawk

Ultra-High Bypass (UHB) or "propfan" jet engines received attention in the late eighties as an economical and greener alternative to currrent GTF and ATF jet technologies. Adoption was partially prevented by industry fears that the external propellers would being seen as a step backwards. Evidently, General Electric and NASA are reinvesting in the technology.
posted by ...possums on Jul 9, 2009 - 29 comments