Manage Navigation Systems Flashcards
Describe Synchro Servos
A synchro transmitter and synchro receiver are linked. The rotation of the stator in the transmitter generates an electric signal in copper windings which is instantaneously sent to the receiver servo. The signal at the receiver is sent through winded coil which generates a magnetic field which rotates the stator.
Purpose of the Navigation Distribution System
Distributes the ship’s heading, roll, pitch, speed, and status signals to various users.
NDDS Cabinets
Contain synchro-digital and digital-synchro cards for data formatting. Also contain other misc components such as UPS, time server, Force 5 GPS.
Main A and B in MCR.
Aux A and B in CCER#3.
TFDU
Time Frequency Distribution Unit
Distributes GPS synchronized time.
Receives the time sync from Force 5.
Uses a Rubidium Oscillator to prevent clock drift.
Lan Switches
Distribute data from NDDS cabinets to LAN users.
MET
Meteorological Data Distribution System
Gathers weather data for predicting radar performance and ballistic calculations. Compiles the data and distributes it.
Vital Users
Receive redundant bearing feed for safe at sea navigation.
Centerline Pelorus
2x Helmsman Tape Repeats
Ops room M-Type Repeater
Critical Users
Receives redundant bearing and position feed for FCS.
Sent through RICS.
CEROS
Sea Search
SIRIUS
RAMSES
SG-180
AHWCS
Non-Vital Users
Receive non-redundant heading feed for navigation.
Bring Wing Peloruses
CO’s char repeat
Ops digital repeat
Emergency steering
Secondary steering
LSO Pelorus
Non-Critical Users
Receive non-redundant heading and position feed for FCS and comms.
SATCOM
SAT TV
SEOSS
CIWS
HMS
LAN Users
X&S Band Radars
Elistra
SHINNADS
CMS
GPS Users
Receive feed from DDU
AHWCS
INS
SHINNADS
AIS
HMS
