Development of aerodynamic bearing support for application in air cycle machines
Files
Date issued
2014
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of West Bohemia
Abstract
Air cycle machines (ACM) are used in environmental control system of aircrafts to manage pressurization of the
cabin. The aim of this work is to gain theoretical and experimental data enabling replacement of rolling bearings,
which require lubrication and have limited operating speed, with aerodynamic bearing support. Aerodynamic
bearings do not pollute process air and at the same time allow achieving higher operating speed, thus enabling
to reduce machine mass and dimensions. A test stand enabling the verification of aerodynamic bearing support
properties for prospective ACM was designed, manufactured and tested with operating speeds up to 65 000 rpm.
Some interesting features of the test stand design and the test results are presented. A smaller test stand with
operating speed up to 100 000 rpm is in design stage.
Description
Subject(s)
aerodynamika, řídicí systémy, turbokompresory, aerodynamická ložiska, stabilita rotoru
Citation
Applied and Computational Mechanics. 2014, vol. 8, no. 1, p. 101-114.