a novel approach for altitude performance of gear-box filter
B. Arul Jothi,A. M. Junaid Basha,S. Hiremath,M. Singaperumal
Published in International Journal of Advanced Research in Mechanical and Production Engineering and Development
ISSN: 2320-7256 Impact Factor:1.398 Volume:1 Issue:2 Year: 08 April,2014 Pages:39-51
Abstract
The combat aircrafts are designed to perform at different altitude conditions with high reliable control systems. The control systems include hydraulic system operating the aircraft control surfaces. At high altitude reduction in atmospheric air pressure and temperature leads to the reduction in the performance of the aircraft. An accessory gearbox connected to the aircraft engine, operates the hydraulic pumps required for hydraulic system. The hydraulic pressure across the lube filter plays a vital role for operating the lubrication system of the accessory gearbox connected to the engine. The high speed gearbox has a self contained lube system. The accessory gearbox is designed with fine jets located in the core of the gear casing. A 10 micron filter is used in the accessory gearbox to ensure contamination control for lube oil to maintain flow through the jets. The performance of the accessory gearbox in different altitude position affects the performance of lube pump. The present paper describes the test setup and performance of the lube filter of the accessory gear box at different altitude conditions using an altitude test rig.
Kewords
Altitude performance, Accessory gear box, Lube filter, lube pump, Inlet pressure, Outlet pressure, Flow
Reference
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