AN/ALE-47 COUNTERMEASURES DISPENSER SYSTEM DESCRIPTION AND THEORY
OF OPERATION (Continued)
THEORY OF OPERATION
The CMDS provides the aircraft with protection from
air-to-air and surface-to-air heat-seeking missiles.
Modes of operation are manual (five stored programs),
semi-automatic (operator/sensor activated), and
automatic (operator/sensor activated). The CMDS
is integrated with the AN/ALQ-156 Missile Detection
System to automatically dispense expendables when
detected by the AN/ALQ-156 when in the Auto or
Semi Auto mode of operation. The CMDS may be
pre-programmed to generate optimum expendable
response in a single or multiple threat environment.
Power requirement for the CMDS is 28 vdc, 2 amps
max in STANDBY and 7 amps for 20 milliseconds
during each squib ignition, is taken from the No. 1 DC
Bus. The three circuit breakers (CB) for the CMDS are
found on the No. 1 EAPS PDP labeled ALE-47, beside
the copilot. Power for the DCDU is taken through a
5 amp CB labeled DCDU. Power required to jettison
expendables is taken through two 10 amp CBs labeled
SQUIB PWR NO. 1 SEQ and NO. 2 SEQ.