TM 1-1510-262-10
Table 4-2.
Mission Control Panel Controls and Indicators. -- Continued
Index #
Control/Indicator
Function
72
POWER AAR-57 20 Amp CB
Enables DC power to the aircraft self-protection system,
Common Missile Warning System (CMWS) for IR threat
detection.
73
POWER ARC-201
Enables DC power to the ARC-201 Radio.
SINCGARS 7.5 Amp CB
74
POWER APR-44
Enables DC power to the aircraft self-protection Radar Warning
5 Amp CB
Receiver.
75
POWER APR-39
Enables DC power to the aircraft self-protection Radar Warning
7.5 Amp CB
Receiver.
76
CONTROL ZEROIZE
Enables DC power to the Zeroize control function on the
5 Amp CB
Annunciator and Mission Control Panel.
77
CONTROL ANTENNA
Applies DC power for tail boom Antenna Steering
5 Amp CB
78
CONTROL WAVEGUIDE
Applies DC power to pressurize the waveguide for the Datalink.
PRESSURE 5 Amp CB
79
CONTROL MSN 5 Amp CB
Applies DC power to various LRUs including the Status Panel
80
MSN ANN LTS 5 Amp CB
Applies DC Power to the Annunciator Panel Lights
SECTION II. AIRCRAFT SURVIVABILITY EQUIPMENT
4-2. AN/AAR-57 COMMON MISSILE WARNING SYSTEM (CMWS)/IMPROVED COUNTER-MEASURE
DISPENSER (ICMD).
a. Description. The Common Missile Warning System (CMWS) detects surface-to-air and air-to-air Infrared (IR)
guided missiles. The Improved Countermeasures Dispenser (ICMD) protects the aircraft against IR threats using
expendable lares. The ICMD also dispenses chaff to protect against Target Tracking Radar (TTR) threats detected
by the existing Radar Signal Detecting Set (RSDS) (AN/APR-39(V) 1) and AN/APR-44. Externally mounted Electro-
Optic Missile Sensors (EOMS), placed strategically around the aircraft, passively detect in-band ultraviolet (UV)
imagery. This imagery is digitized and sent over a high-speed serial interface to the Electronic Control Unit (ECU).
The ECU processes this imagery for threat signatures, and if a threat is determined, sends dispense commands to
the ICMD. TTR threats are detected by the existing Radar Signal Detecting Set (AN/APR-39(V) 1) and AN/APR-44,
which displays the threat data on its indicator and provides threat audio to the Intercommunication System (ICS).
The ICMD consists of one Flare Dispenser, one Chaff Dispenser, and one Sequencer. Each Dispenser accepts a
munition Payload Module that contains 30 lares or chaff, as applicable. The Sequencer processes lares dispense
commands from the ECU and issues iring voltages to the Flare Dispenser to eject a solution (quantity, type, and
sequence) of lares to counter the IR threat. The Sequencer also processes manual chaff dispense discrete initiated
by the pilot/co-pilot via the chaff switch on their control wheel and issues iring voltages to the Chaff Dispenser to
eject a solution of chaff to counter the threat.
b. System components. Table 4-3 Common Missile Warning System Components organizes the system com-
ponents into one of three categories. The categories are CMWS, ICMD and Platform. The CMWS section is com-
prised of the threat detection devices. The ICMD section is comprised of the threat protection devices. The platform
section is comprised of the Operator/Maintenance interface devices.
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