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FCS Flashcards

1
Q

Purpose

A

The Fire Control System is a radar and optronic target acquisition and tracking system used IOT control and generate fire control solutions for the 57mm Gun and the Evolved Sea Sparrow Missile systems.

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2
Q

Caps and Lims

A

Tracking Radar: 15.5-17.5 GHz J-Band.
CWI: 10-10.5 MHz X-Band.
Range: 40nm
Track by radar or video.
Memory Tracking if track quality drops below acceptable levels.

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3
Q

FC Director

A

Radar and sensor unit.

Used to track targets through radar or video and illuminate tracked targets for missile guidance via CWI.

Located on the Bridge Top and Hangar Top.

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4
Q

Antenna Unit

A

Cassegrain Antenna and 3 feed horns.

Tracking radar feed horn
CWI pencil beam feed horn
CWI rear reference feed horn

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5
Q

Radar Unit

A

Travelling Wave Tube amplifier for tracking radar.

Monopulse Reciever.

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6
Q

Sensor Unit.

A

TV camera
Laser Range Finder
IR Camera

Used for tracking slow moving surface targets.

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7
Q

Servo and Support Unit

A

Hydraulic motors.

Control turntable elevation and bearing as well as stabilization.

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8
Q

FC Cabinets

A

House processing and interface components for FCS.

GCU only in Cab A.

Cabinets A and B located in FCER 1 and 2.

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9
Q

GCU

A

Interface between FCS and Bofors 57mm Gun.

Completes fire control solution.
Round programming.
Gun laying and firing.
Number of rounds in mount to HMI.

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10
Q

LCU

A

Interface btween the GMVLS and CWI transmitter.

Conducts engagement planning for ESSMs
Controls GMVLS.
Controls CWI.

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11
Q

DCU

A

Director Control Unit

Interface between SIU and director.

Controls movement of the director by controlling HPU.

Controls tracking radar transmission

Processes radar and video signals for tracking.

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12
Q

SIU

A

System Interface Unit

Overarching interfacing and control of FCS.

Recieves NDDS feed.
Start up and running of FCS software.

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13
Q

CWI Cabinets

A

Shock mounted cabinets hard wired to their respective FCS cabinets.

House CWI components.

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14
Q

Controller Cabinet

A

Control and monitoring of CWI system.

Generates RF energy via Stabilized Master Oscillator (STAMO)

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15
Q

Auxiliary Cabinet

A

4x 300V high voltage power supplies

Provide power to amplifiers

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16
Q

Power Amplifier Cabinet

A

2x 48 SS Amplifiers.

Amplify RF energy.

Low Power: 30 amps, 200W.
High Power: 96 amps, 2kW.

17
Q

Environmental Support Cabinet

A

Heat exchanger between ASWC and fresh water. Dry air blower.

Cools PA cabinet and provides dry air to opening of CWI waveguide in PA cabinet.

18
Q

Dry Air Unit

A

Supplies dry air to waveguides to prevent corrosion.

19
Q

Man Aloft Switch

A

Safety component

Prevents accidental radiation.

20
Q

HPU

A

Hydraulic Pump Unit.

Controlled by the DCU.
Controlls movement of the director.
Cooled by chilled water.
Hydraulic oil cools TWT.

21
Q

FC Consoles

A

Human Machine Interface to FCS.

Main Display: TacPlot, video feed.
Touch Input Display: control input.
Alerts Window: Displays events that require action.

22
Q

Modes of Operation (List)

A

Locked
Standby
Designation
Acquisition
Tracking
Surveillance
Pre-Action Calibration

23
Q

Locked

A

Director locked in position with locking pins for elevation and azimuth.

24
Q

Standby.

A

Director positioned in predefined direction.
Conducts servo tests and calibrations every 5 minutes.

25
Q

Designation

A

Director designated to point in direction of a hooked track.

Allows operator to use optronic sight.

Does not transmit RF energy.

26
Q

Acquisition

A

Director beings search pattern to attempt to acquire a target.

Emitting RF energy.

27
Q

Tracking

A

After 2 successful returns from the target.

System now capable of calcluating fire control solutions.

28
Q

Pre-Action Calibration

A

Ensure that wind and muzzle velocity calculations are valid.

Gun fired at fictitious target.
4 salvos of 5 to heat gun barrel.
Radar measures deviation from boresight.

29
Q

Operational Description

A

Smart-S detects missile.
CMS determines ESSM to be used.
Standby, designation, acquisition, tracking
FCC to FC Cab to CWI Cab to FCD.

30
Q

System Interfaces

A

EPG&D
ASWC
Chilled Water
HVAC
CMS
NDDS
57mm Gun
GMVLS
SLA-10 Blanker

31
Q

SLA-10 Blanker

A

Provides pre-trigger signals to ELISRA, SeaSearch, Ramses preventing them from being blinded by the high power transmissions of the FC radar and CWI.

32
Q

Redundancy and Survivability

A

Geographicallty distributed.

2 nearly identical systems

Critical Navigation Users

Shock mounted cabinets

CWI cabinets hard wired to FC Consoles

GCU loss…

Loss of one director and ESSM capability…

NEI (15 decks)

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