Electrical propulsion
A gas turbine
A gas turbine provides extra propulsion for sprinting.
Connected to a gearbox.
Gearbox connected to propeller shaft.
Electrical propulsion
Water is an excellent medium for the transmission of sound.
The reductions in self noise generated by the ship is essential.
There are two reasons for this:
-Reduce the range at which our ship can be detected
-Reduce own interference with the towed array sonar operation.
Electrical propulsion
An electric motor drive is used for propulsion.
Electric motor system is comprised of nine basic components
- Air filter
- Cooling fans
- Yoke
- Compole
- Main pole
- Yoke
- Armature
- Commutator
- Brush gear
Electric motor system
The warm air is now vented, through an air cooler, to the engine space.
Electrical propulsion
Shaft Revolutions per min
- Shaft RPM is used to control the speed of the ship.
- The 600V system is run in parallel.
- for how much gen is next flash card.
SRPM
2 generators = 65 SRPM = 8-9 knots
3 generators = 80 SRPM = 10-12 knots
4 generators = 90 SRPM = 14 Knots
Electrical propulsion converter
The propulsion converter is normally controlled remotely.
Propulsion motors can be controlled from the local control panels.
Electrical propulsion LCPs
The LCP are situated within the converter regulators.
There is a 3 position selector switch with the positions:
-Remote
-Reversionary 1
-Reversionary 2
