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717th MEDICAL COMPANY AN/ALQ-144A(V)1 INFRARED COUNTERMEASURE SET

717th MEDICAL COMPANY AN/ALQ-144A(V)1 INFRARED COUNTERMEASURE SET. AN/ALQ-144A(V)1 INFRARED COUNTERMEASURE SET ASET II INSTRUCTIONS. THIS TRAINING MODULE IS SENSITIVE BUT UNCLASIFIED (SBU) AND WILL NOT BE RELEASED TO UNAUTHORIZED INDIVIDUALS.

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717th MEDICAL COMPANY AN/ALQ-144A(V)1 INFRARED COUNTERMEASURE SET

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  1. 717th MEDICAL COMPANYAN/ALQ-144A(V)1 INFRARED COUNTERMEASURE SET

  2. AN/ALQ-144A(V)1 INFRARED COUNTERMEASURE SET ASET II INSTRUCTIONS • THIS TRAINING MODULE IS SENSITIVE BUT UNCLASIFIED (SBU) AND WILL NOT BE RELEASED TO UNAUTHORIZED INDIVIDUALS. • ADVANCE TO THE MAIN MENU BY PRESSING THE RIGHT ARROW KEY. • SELECT A TRAINING MODULE BY PLACING THE MOUSE POINTER OVER THE ACTION BUTTON. • ONCE YOU ARE IN A MODULE, YOU MAY MOVE FORWARD AND BACKWARD BY UTILIZING THE RIGHT AND LEFT ARROW KEYS, RESPECTIVELY. • YOU ARE AT THE END OF A MODULE WHEN YOU SEE A “HOME” BUTTON IN THE UPPER RIGHT CORNER. • IF YOU DESIRE TO HEAR A SOUND BITE FOR A PARTICULAR PHASE OF THE TRAINING MODULE, HIT THE SOUND BUTTON. • DURING CHALLENGE TEST, ANSWERS ARE SELECTED BY HITTING THE BUTTON NEXT TO YOUR CHOICE. WRONG ANSWERS WILL BE APPARENT.

  3. AN/ALQ-144A(V)1 REFERENCE TM 11-5865-324-12 SYSTEM DESCRIPTION/FUNCTION/LOCATION OF COMPONENTS PREFLIGHT OPERATION AND TACTICS SHUTDOWN PROCEDURES CHALLENGE TEST

  4. AN/ALQ-144A(V)1 SYSTEM DESCRIPTION/FUNCTION/LOCATION OF COMPONENTS • THE INFRARED COUNTERMEASURES SET (IR JAMMER) PROVIDES INFRARED COUNTERMEASURE CAPABILITY. • THE AN/ALQ-144A(V)1 PROVIDES JAMMING AGAINST A VARIETY OF IR MISSILES. • ONCE TURNED ON, THE AN/ALQ-144A(V)1 IS AUTOMATIC AND OMNI-DIRECTIONAL. • THE AN/ALQ-144A(V)1 CONSIST OF A COUNTERMEASURE OPERATOR CONTROL PANEL AND INFRARED TRANSMITTER. WARNING:Do not continuously look at the IR transmitter during operation, or for a period of over 1 minute from a distance of less than 3 feet. Skin exposure to countermeasure radiation for longer than 10 seconds at a distance less than 4 inches shall be avoided.

  5. AN/ALQ-144A(V)1SYSTEM DESCRIPTION/FUNCTION/LOCATION OF COMPONENTS (cont.) OPERATOR CONTROL PANEL ALLOWS THE PILOT TO TURN THE COUNTERMEASURE SET ON AND OFF FROM THE COCKPIT.

  6. AN/ALQ-144A(V)1SYSTEM DESCRIPTION/FUNCTION/LOCATION OF COMPONENTS (cont.) TRANSMITTER -The transmitter generates IR energy, modulates it, then passes it through the covert window in the form of invisible IR energy. This IR energy is used to confuse IR seeking missiles. The transmitter consists of a source, high and low speed modulators, covert window and housing.

  7. AN/ALQ-144A(V)1PREFLIGHT • REMOVE AND STOW TRANSMITTER COVER • CHECK EXTERNAL STRUCTURE FOR TIGHTNESS OF ALL SCREWS, BOLTS, CLAMPS AND OTHER STRUCTURAL FASTENERS. BIT INDICATOR COVER IS SECURED. • INSPECT FOR CRACKS, STRAINS, OR DEFORMITIES IN THE HOUSING. • INSPECT COVERT WINDOWS FOR CRACKS OR SCRATCHES. • ENSURE THE THE AIR INLET VENTILATION HOLES ARE OPEN AND CLEAR TO PREVENT OVERHEATING. • INSPECT OPERATOR CONTROL PANEL FOR SECURITY AND ON/OFF SWITCH FOR SERVICEABILITY.

  8. AN/ALQ-144A(V)1OPERATION AND TACTICS • Normally the IR countermeasures sets operates using 28 Vdc power from the aircraft. This will generate a power output in excess of 1500 watts. • This countermeasure set will provide jamming against threat infrared missile systems when operated on an aircraft which has been equipped with low reflective paint and Hover Infrared Suppressor Subsystem (HIRSS).

  9. AN/ALQ-144A(V)1OPERATION AND TACTICS (cont) IRCM INOP • A built-in test monitors operation and alerts the pilot when a malfunction occurs. If the IR jammer malfunctions, the IRCM INOP segment on the caution/warning panel illuminates. • There are four Built-In Test (BIT) Indicators located inside the base of the AN/ALQ-144A(V)1. If the caution panel segment illuminates, maintenance can reference the BIT indicators for the specific component that failed.

  10. AN/ALQ-144A(V)1OPERATION AND TACTICS (cont) • The BIT Indicators are defined as follows: • HF High Frequency Modulator speed out of tolerances • LF Low Frequency Modulator speed out of tolerances • EM Source Emission or IR level of the source drops below its normal range • HT High Temperature is sensed on the internal components • If any of these bits are tripped, a signal is sent to the IRCM INOP circuit and the ALQ-144 is shut-down. • Switch resets the tripped BIT.

  11. AN/ALQ-144A(V)1OPERATION AND TACTICS (cont) • When the system is first turned on, a stabilizing is applied before the BIT is energized, this prevents the BITS from tripping during the system warm-up which takes about 60 seconds. During this time, the source element heating up, the servo motors and drive circuits are energized which turn on the high and low speed modulators. After this 1 minute warm-up, the stabilizing signal is removed and the BIT is monitoring the system for faults. If the IRCM INOP caution light illuminates after this 60 second warm-up it will be do to a component failure or the operator control panel switch being turned off. • Placing the power switch to the OFF position will shut down the source heating element, but the modulators will continue to spin for about a 60 second cool-down period, at the same time the IRCM INOP caution light will illuminate for this one minute. STARTS 60 SECOND COOL-DOWN 60 SECOND COOL-DOWN IRCM INOP IRCM INOP

  12. AN/ALQ-144A(V)1OPERATION AND TACTICS (cont) • THE AN/ALQ-144A(V)1 CAN BE PREPROGRAMMED TO DEFEAT MANY KNOWN IR THREAT SYSTEM BY SETTING ONE OF SIX DIFFERENT JAM PROGRAMS (JP) ON THE A9 REFERENCE FREQUENCY GENERATOR CIRCUIT CARD. THIS JP WILL BE DETERMINED BY THE UNIT’S ASE/EW OFFICER AND SET BY EITHER THE ASE/EW OFFICER OR A CREW CHIEF.

  13. AN/ALQ-144A(V)1SHUTDOWN PROCEDURES • TO AVOID DAMAGE TO EQUIPMENT DO NOT FORCE THE PWR SWITCH TO THE OFF POSITION. ALWAYS PULL THE PWR SWITCH HANDLE TOWARDS YOU TO DISENGAGE THE LOCK, THEN SET THE PWR SWITCH TO OFF. • DO NOT REMOVE 28 VDC POWER FROM THE AIRCRAFT UNTIL THE IRCM INOP CAUTION LIGHT IS OUT, THIS WILL PERMIT THE SYSTEM TO COMPLETE ITS PROPER COOL-DOWN.

  14. AN/ALQ-144A(V)1CHALLENGE TEST 1. THE AN/ALQ-144A(V)1 COUNTERMEASURE SET DEFEATS WHAT TYPE OF WEAPON SYSTEMS? A. RADAR GUIDED SURFACE TO AIR MISSILES B. RADAR CONTROLLED ANTI-AIRCRAFT GUN SYSTEMS C. HEAT SEEKING MISSILES D. BAD GUYS WITH CROSS-BOW WEAPON SYSTEMS 2. HOW DOES THE AN/ALQ-144A(V)1 TAKE TO WARM-UP? A. ABOUT 60 SECONDS B. ABOUT 30 SECONDS C. 5 MINUTES D. NO WARM-UP REQUIRED 3. WHO DETERMINES WHAT JAM PROGRAM IS ENTERED INTO THE AN/ALQ-144A(V)1? A. CO-PILOT B. S-2 OFFICER C. PILOT-IN-COMMAND D. ASE/EW OFFICER

  15. AN/ALQ-144A(V)1CHALLENGE TEST 4. WHEN MAY THE IRCM INOP CAUTION LIGHT ILLUMINATE? A. DURING THE FIRST 60 SECONDS AFTER THE POWER SWITCH IS TURNED ON. B. WHEN THE BIT DETECTS A OUT-OF-TOLERANCE CONDITION C. FOR ABOUT 60 SECONDS AFTER THE POWER SWITCH IS TURNED OFF D. AFTER A HEAT SEEKING MISSILE SLAMS INTO YOUR AIRCRAFT, IT WILL COME ON WITH THE REST OF THE CAUTION PANEL 5. YOU ARE BEING ENGAGED BY SEVERAL SA-7s, ARE YOU REQUIRED TO ACTIVATE THE AN/ALQ-144A(V)1 FOR EACH ENGAGEMENT? A. NO, ONCE THE SYSTEM IS TURNED ON, IT IS AUTOMATIC AND REQUIRES NO FURTHER ACTION FROM THE CREW. B. YES, YOU MUST HIT THE RED CHAFF BUTTON LOCATED AT THE REAR OF THE CENTER CONSOLE.

  16. YOU HAVE COMPLETED THE AN/ALQ-144A (V)1 MODULENOW GO OUT WARFIGHTER AND DON’T SWEAT THIS PUNK

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