AH 64 Contact Checkride (Electrical System,
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Created by:
RyanKirkeby on January 16, 2012
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14 terms
Terms | Definitions |
|---|---|
 The primary purpose of the electrical system is __ of primary or secondary electrical power for operation. | Distribution |
| The electrical system manages __, __, __, and __ coming in. | DC AC Battery Power |
| The High Power Switching Modules provide power to __, __, and __. | Circuit Breaker Panels Electrical Load Centers Environmental Control System. |
| The Electrical load centers provide __ protection, __ control logic, and __ power distribution for AC, DC, and battery power requirements. | Circuit Switching Secondary |
| The Utility Relay Panel provides __ capability for the current sensing contactors in each __. Also provides __ capability for each __ contactor. The panel is disabled when a/c is __. | reset HPSM Trip ECS airborne |
| The master ignition pannel consists of three position switches controlled by the pilot. | OFF, BAT, EXT |
| At 80% charge, the battery will provide power for __ mins at __degrees C. | 12 25 |
| The AC electrical system consists of __ generators and __ GCUs (Ground Control Units). Generators are mounted on and are driven by the XMSN __. Each one can supply __ electrical power. The GCUs manages __ to satisfy electrical power requirements. After the APU is started at __%RPM, GCU energizes primary bus contactor. It provides generator protection by disconnecting generator for the following: Undervoltage (__+-__VAC or less) Overvoltage (__+-__VAC or more), underfrequency, overcurrent, and feeder __ between the generator output and system loads. | 2 2 AGB Enough Generator 95 99.5 5 125 1.5 fault |
| The DC electrical system provides __VDC power for the A/C converting power from the HPSM to regulated __VDC. It consists of __ regulated transformer rectifier units. | 28 28 2 |
| The Transformer Rectifier Units is the primary source of __ power. In the event of dual failure, the __ will supply all DC loads. | DC Battery |
| The APU drives the accessory section of the main __, which provide HDY pressure, __, and __ power. It supplies air to the __. The fuel consumption is approximately __lbs per hour. | XMSN AC DC APU 175 |
| What are the automatic shutdown features for the APU? LOLOLO | Loss of speed sensor signal Over temp Loss of Temp signal Over current Low oil pressure Overspeed |
| The APU Load Control Valve opens when the APU reaches __%. It will close when the APU is __ or when APU __ __ is pressed. | 95 shutoff Fire button |
| The APU Power Takeoff Clutch provides __ and __ of the APU and AGB via the #__ driveshaft. It normally engages at 60% APU speed or above main rotor speed of __to__%Nr. | decoupling coupling 7 94 96 |
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