Is the number of blades rotating in 1 minute usually is written in the form of reduced variable and N cycles.Blades can be made by the installation of the Gear box.
Is the number of propeller that spins around in one minute is often written in the form of reductions in variable N and the propeller can be done by installing the Gear box.
Is the number of rounds of the propellers rotating in 1 minutes are often written in the form of a variable N and in reducing the cycle.The propeller can be achieved by installing Gear box.