Re: Unducted fans?

From:         nordstrom@meediv.lanl.gov (Carl Nordstrom)
Organization: Electrochemical Engine Project
Date:         07 Jan 94 23:23:00 PST
References:   1 2 3
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Garrett was not involved with P&W during the program.  Allison Gas Turbines
was.  Allison was responsible for the counter-rotating gearbox (99%+
efficiency!), the LP compressor, and the core (a modified Allison 570). 
Pratt was responsible for the nacelle (subbed out), the prop (subbed to
Hamilton Standard), the controls, and maybe the LP turbine (not sure).  The
P&W/Allison team set speed records, and had a normal looking operating
envelope.

Carl Nordstrom