CMDS/ALE-47

Question 1

ASE components

Answer 1

• Missile Warning Set (MWS), AN/AAR-47A(V)2 or AN/AAR-47 B(V)2
• Electronic Support Measures (ESM), AN/ALQ-210
• Infrared Countermeasures Set (IRCM), AN/ALQ-144C(V)5
• Countermeasures Dispensing System (CMDS), AN/ALE-47(V)

Question 2

IOSC

Answer 2

Integrated Optical Sensor Converter. The B(V)2
additional capability to detect noise patterns in the UV clutter (tonal noise), enhanced probability of
timely missile detection (Pd), but it comes with a small increase in false alarm rate (FAR).

Question 3

AAR-47 MWS

Answer 3

Passively detect attacking IR missiles and battlefield lasers (range finder, target designator, and beam rider missiles)

360 degree coverage for the aircraft with coverage divided into four 90-degree zones
centered at 45, 135, 225, and 315 degree relative headings

Missile Warning Aperture
HARLID
Phododiode Laser Warning Aperture
Dynamic Blanking Adjunct Detector

Question 4

Missile Warning Aperture

Answer 4

Wide FOV detectors that sense UV radiation from rocket motor plume/other man made sources

Evaluates photon count streams for temporal patterns

Question 5

Laser Warning

Answer 5

500-1600 nm region

HARLID - AOA info
Photodiode - Quadrant only, but can detect weak laser signals

Asterisk*

Question 6

HFI

Answer 6

Hostile Fire Indication

Quadrant indication

Small arms/unguided munition

Question 7

SSDP

Answer 7

Stores and self defense program

Contained in the SSDC

Question 8

CP

Answer 8

Countermeasures Signal Processor

Question 9

Blanking

Answer 9

To prevent false laser threat warnings from reflected laser energy. Default for laser blanking is OFF, it must be enabled on the MTS main menu to function

UV blanking function shutters the IOSC to
protect it from damage by high levels of UV energy.

Question 10

System Operation

Answer 10

Under normal operating conditions, the SSDP processor in the MC maintains
1553 communication with the MWS. In this state, all threats detected by the MWS are passed to the SSDP, and
are displayed in the ASE display, and also on the horizontal situation indicator (HSI) on the flight display (FD).

Question 11

ALQ-210

Answer 11

replicates every HTW emitter report to the weapons 1553B bus

“RWR” (radar warning receiver)

Question 12

ALQ-144

Answer 12

upper/lower - The transmitter
generates infrared light, modulates it, and then passes it through the covert window in the form of invisible
IR energy to disrupt the thermal imaging of missile threats, provides omni-directional support

Jam Select 1-9

Question 13

ALQ-144 System Turning On

Answer 13

60 second warm up

Lower transmitter disabled via WOW switch

Question 14

IRCM alerts

Answer 14

The four monitored functions are high frequency and low frequency modulator speeds, source emission, and high temperature.

If an IRCM failure alert
is observed, the system should be powered down immediately by turning the ON/OFF switch on the OCU to OFF. After the 60 second cool down period is completed the power distribution circuits shut down. The IRCM jammer
system is turned off and the UPPER/LOWER IRCM INOP
alerts are removed.

Question 15

ALE-47 COMPONENTS

Answer 15

CMDS

• Programmer
• Sequencer
• Dispenser housing
• Magazines
• Pilot/copilot collective countermeasures dispense switch
• Safety switch
• Threat indicator panels.
• SO utility light assembly

Question 16

CMDS Sequencer

Answer 16

• Generates and routes firing power to specific payload locations in the dispenser assembly
• Conducts BIT
• Determines magazine identification (16 unique loadouts)
• Monitors inventory

Question 17

Polling

Answer 17

polling every 5 minutes, verifying squib continuity

Question 18

Bypass

Answer 18

Dispense one of each with Bypass mode

Jettison available (SEL)

Question 19

Magazine Assembly

Answer 19

30 1.42 inch cartridges

Breechplate has MAG ID and routes firing signal

Question 20

MAG ID

Answer 20

ABCD; 1234

MDF relies on correct setting to determine which of the 16 configurations is present.

Question 21

DISPENSE SWITCH

Answer 21

• Selected Manual Program (1 – 6) in MAN mode.
• Manual Program 5 in SEMI mode if there is no DISPENSE READY indication.
• Manual Program 5 in AUTO mode.
• Dispense in SEMI mode if DISPENSE READY is illuminated.
• Bypass program in BYPASS mode.

Question 22

Squib power removed when

Answer 22

Safe
Dispenser safety pin
WOW
CB's pulled
ISD OFF

expendables cannot be dispensed by any means

Squib power still on with “CMDS OFF”

Question 23

MDF 3205 Manual Programs: Memorize

Answer 23

• MAN 1: Covert IR Reactive with Tactical Repeat;
• MAN 2: Comprehensive IR Reactive;
• MAN 3: Comprehensive IR Reactive with Tactical Repeat;
• MAN 4: Preemptive IR;
• MAN 5: Combined IR and RF Reactive;
• MAN 6: RF Reactive.