Answer:
The term for usable horsepower of a reciprocating propeller driven aircraft is "shaft horsepower" or "shp." Shaft horsepower refers to the actual power output of the engine's crankshaft, which is transmitted to the propeller via the aircraft's drivetrain. The shp of an aircraft engine is used to determine its performance capabilities, such as its maximum speed, rate of climb, and payload capacity.
Step-by-step explanation: