This question is regarding the horsepower rating of the Walter
engine(s). The published take-off horsepower rating for the 601E is
751 shaft horsepower (SHP). This can be found at the water web site
www.walterengines.com . My understanding
of turboprop engines is that they generate their power primarily in the
form of torque applied to the propeller. This is referred to shaft horse
power (SHP). In addition to this, power is generated by the jet
exhaust from those bent pipes near the front (which is really the
back) of our engines. These two ratings are added together and
referred to as "equivalent shaft horsepower" (ESHP). This can be seen
in the Pratt & Whitney web site in reference to the PT6
engines which are rated "580 to 920 ... ESHP" or equivalent shaft
horsepower
www.pwc.ca . My
question: Are the horsepower ratings for the Walter engines "SHP" or
"ESHP"?