The copperhead (Agkistrodon contortrix) is a member of the pit viper family, like most of the venomous snakes in North America. The copperhead (Agkistrodon contortrix) is a member of the pit viper family, like most of the venomous snakes in North America.
The Command Thrust models use the same bigger gearcase housing as the Mercury 150 FourStroke, but with an all-new 2.38:1 ratio ideally suited for pontoons and heavier boats. Itâs the first true oversized gearcase in the industry for outboards in this horsepower range.
Thrust loading is in the units of pound per horsepower and is a function of power and rotor disk area. Now that thrust loading is calculated, we can find the total thrust of the propeller (or lift of the rotor). Using equation one, we calculate power loading (PL) of a 6 foot diameter (72) disk with 300hp absorbed. Using equation two, we calculate the thrust loading.