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CURRENT MONITORING PULSED DC CONTROLLER, BRINGS TOGETHER POWERFUL LONG-RANGE IONISATION; CLOSED-LOOP FEEDBACK; SELF-MONITORING AND REMOTE REPORTING. A COMPLETE PACKAGE, SELF-MONITORING AND ADJUSTMENT OF PERFORMANCE ALLOWS OPTIMUM CONTROL OF STATIC FOR MUCH LONGER PERIODS THAN PREVIOUSLY POSSIBLE. LOCAL DISPLAY AND OUTPUT SIGNALS ALERT OPERATORS TO THE NEED TO CLEAN THE EQUIPMENT.

A GENERATOR CONTROL UNIT (GCU), USED TO MONITOR AND CONTROL THE INTEGRATED DRIVE GENERATORS WHEN THEY ARE POWERING AIRCRAFT LOAD BUSES. IT HAS TWO MAIN AIRCRAFT TASKS: CONTROL AND PROTECTION; TO MONITOR AND CONTROL THE QUALITY OF ELECTRIC POWER SUPPLIED TO THE AIRCRAFT AND BUILT-IN TEST EQUIPMENT (BITE); TO COLLECT AND ANALYSE FAULT DATA AND SAVE THIS FOR LATER RETRIEVAL BY MAINTENANCE PERSONNEL.

PROBE HEAT COMPUTER (PHC), USED IN CONJUNCTION WITH AN AIRCRAFT ANTI-ICING SYSTEM OF PROBES AND SENSORS. THE PHC IS A RECTANGULAR UNIT WHICH HAS A BOX ASSEMBLY WITH PRINTED CIRCUIT BOARDS. THE CPU PERMANENTLY MONITORS THE PROBE ANTI-ICING OPERATION. THE PHC PROVIDES AN ANTI-ICING FUNCTION WITH DATA PROCESSING. THE FUNCTIONS INCLUDE: POWER SUPPLY, ANTI ICING OF THE TOTAL PRESSURE PROBE, OUTER AIR TEMPERATURE SENSOR, ANGLE OF ATTACK SENSOR AND RIGHT/LEFT STATIC PRESSURE PROBE. IT PROVIDES POWER SUPPLY CONTROL AND SUPPLIES RELATED WARNING SIGNALS.

A HYDROMECHANICAL UNIT (HMU), A COMPONENT OF AN AIRCRAFT ENGINE SYSTEM. THE HMU RESPONDS TO ELECTRICAL SIGNALS FROM AN EEC TO METER ENGINE FUEL FLOW AND MODULATE MOTIVE FLOW TO SIX EXTERNAL HYDRAULIC SYSTEMS. A COMPONENT IN THE HMU CAUSES SERVO POSITIONING OF THE UNIT MV. THE MV POSITION ESTABLISHES THE PROPER METERED FUEL DELIVERY ORIFICE FOR THE COMMANDED FUEL FLOW. A MECHANICAL OVERSPEED GOVERNOR SWITCH LIMITS ENGINE SPEED TO 106 PERCENT MAXIMUM.

A HYDROMECHANICAL UNIT (HMU), A COMPONENT OF AN AIRCRAFT ENGINE SYSTEM. THE HMU RESPONDS TO ELECTRICAL SIGNALS FROM AN EEC TO METER ENGINE FUEL FLOW AND MODULATE MOTIVE FLOW TO SIX EXTERNAL HYDRAULIC SYSTEMS. A COMPONENT IN THE HMU CAUSES SERVO POSITIONING OF THE UNIT MV. THE MV POSITION ESTABLISHES THE PROPER METERED FUEL DELIVERY ORIFICE FOR THE COMMANDED FUEL FLOW. A MECHANICAL OVERSPEED GOVERNOR SWITCH LIMITS ENGINE SPEED TO 106 PERCENT MAXIMUM.