The commanding officer directed the lee helm station be manned as well and the crew took actions intended to transfer
propeller thrust control from the helm to the lee helm station.
The
propeller thrust is simply predicted from the relationship P = TV by assuming that the propeller generates the required power.
Desired angular position theta is measured during
propeller thrust force T is applied.
For marine vessels, propulsion shafting is an essential changer of engine torque and
propeller thrust. Modern submarine is mostly equipped with the electric propulsion plant, realizing the mechanical separation between diesel generator and propulsion motor.
These cost savings and environmental benefits are achieved by operating the ship's propeller at low speed when maximum vessel speed or
propeller thrust is not required.
The master's action in applying more
propeller thrust when Finnarrow unexpectedly stopped short of the berth lacked caution and possibly led to the vessel's hull being punctured.
The Poly Flex mounts are specifically designed, built and DNV certified for marine applications, and feature high resistance to movement caused by dynamic loads, such as
propeller thrust. The engine mounts are able to handle working loads of 20 to 5000 lb.
Those tests showed that the
propeller thrust varied quadratically with propeller speed.
The
propeller thrust coefficient, power coefficient, and efficiency have the following forms:
The thrust distribution is performed in such a way that the
propeller thrust, or the sum of propellers thrusts, is equal to the demanded force [Z.sub.d].
