SERVICING INTEGRATED DRIVE GENERATOR PESAWAT BOEING 737-800 NEXT GENERATION

RAMDHAN FEBRIANSYAH, ADITYA (2018) SERVICING INTEGRATED DRIVE GENERATOR PESAWAT BOEING 737-800 NEXT GENERATION. Tugas Akhir thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

Integrated Drive Generator (IDG) is an electrical power source of the aircraft that generates 115/200V AC 400 Hz 3-phase electrical power. This IDG rated 90 kVA at the Point of Regulation (POR). IDG consists of Constant Speed Drive (CSD) components that change variable input from engine accessory gearbox to a constant speed output 24.000 rpm and a brushless-type AC generator. Oil is used to conduct cooling system in the IDG. The IDG is equipped with Different Pressure Indicator (DPI) to provide an indication for filter clogged in the scavenge filter. In normal condition, IDG servicing such as oil and filter change are conducted between 125 and 500 operating hours. IDG inspection is conducted by inspecting the DPI trough IDG access panel. DPI will extend/pop-out if filter clogged is occurred. Clogged filters occur because there are some foreign particles that stuck in the filter element mesh. As a result, the filter element cannot work properly and oil will pass through scavenge bypass valve. IDG servicing is conducted by changing scavenge filter and charge filter and also IDG oil. The DPI can be reset 3 times without changing the IDG. The filter element is not reusable. When the service has been carried out, the DPI is inspected 4 times every 100 operating hours. If there is no DPI extension between 4 x 100 operating hours, the servicing time could back in normal.

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