Notes regarding the supply and drain pressure effects on a squeeze film damper
Journal Title: INCAS BULLETIN - Year 2018, Vol 10, Issue 4
Abstract
Squeeze film dampers (SFD) are perhaps the most efficient devices that, can be used nowadays to control the shafts in airworthy turbo-compressors. Various other devices can be successfully used in land-based rotating machinery; however, due to space and weight constraints they can not be used for the lateral vibrations control in on-board ball bearings supported turbines. SFDs are basically thin oil films (surrounding the ball bearing housings), that provide the stiffness and damping required for adequate shaft behavior in conjunctions with various elastic elements and anti-rotational devices Fluid films in SFDs are strongly influenced by the oil supply and drain pressures. Some aspects regarding the effects of the supply and drain pressures on a SFD are discussed below.
Authors and Affiliations
Laurentiu MORARU
Keywords
Related Articles
- EP ID EP419662
- DOI 10.13111/2066-8201.2018.10.4.9
- Views 64
- Downloads 0
Development of Framework for Acquisition of Avionics Integration Capability
With the rapid advancement in electronics technology, in the last three decades Avionics systems have evolved from standalone single function units to functionally correlated and interdependent systems. To harness the po...
Analysis Regarding the Effects of Atmospheric Turbulence on Aircraft Dynamics
This paper will analyze the Gust Load Alleviation (GLA) systems which can be used to reduce the effects of atmospheric turbulences generated by wind gusts on vertical acceleration of aircraft. Their purpose is to reduce...
Attitude Control Synthesis for Small Satellites Using Gradient Method. Part I - Nonlinear Equations
The paper presents some aspects for synthesis of small satellites attitude control. The satellite nonlinear model presented here will be with six degrees of freedom. After movement equation linearization the stability an...
Survivability rate among pilots in case of ejection
The current paper presents a statistical analysis of a recent research made by the author [1], showing the factors causing the accidents that happened in Romanian Air Force from 1952 to 2014. Also the decision of ejectio...
Book Review by Ioan URSU. Methods of Mathematical Physics, vol. 1 (575 pp, April 1989) Methods of Mathematical Physics, vol. 2, Differential Equations (852 pages, April 1989), by Richard Courant and David Hilbert −WILEY-VCH