Quote:
Originally Posted by Mustang Dave
Essentially a turbocharger coupled to the crankshaft (other than the 2-speed compressor part).  |
...exactly. I still have my copy of the NATOPS manual for the EC-121, and there's a nice picture illustrating how the PRT's worked.
..the coupling between the turbine and the crankshaft wasn't "hard," there was a "fluid coupling" (torque converter) in between each PRT and the crankshaft.