Experimental investigation on the role of flexbars and metallic end seals in squeeze film dampers (of gas turbine engines)

Kumar, VA and Kaushal, SC and Lakshmikantan, K (1983) Experimental investigation on the role of flexbars and metallic end seals in squeeze film dampers (of gas turbine engines). In: International Symposium on Air Breathing Engines, 6th, Paris, France, 6-10 Jun 1983, Paris, France.

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Abstract

A performance evaluation is undertaken for squeeze film dampers by means of a novel test program which highlights the effect of several related parameters on damper performance. Attention is given to the effects of flexbars and metallic end seals on the performance of13; squeeze film dampers. Damping coefficient quantitative values were calculated by direct measurement of the force transmitted to the foundation, damper sleeve displacement, phase angle between force transmitted and damper sleeve displacement, and excitation frequency,13; for various oil supply pressures and rotor speeds. Flexbars and metallic end seals generally improve system damping characteristics, and it is noted that the location of the end seal gap, in relation to the position of the squeeze film oil supply inlet ports, plays a significant role in making the introduction of the end seal more13; effective in system damping.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Gas Turbines;Performance Tests;Seals (Stoppers);Squeeze Films;Vibration Isolators;Coefficients;Engine Dsign;Test Facilities13;
Subjects: ENGINEERING > Mechanical Engineering
Division/Department: Propulsion Division, Other, Other
Depositing User: Ms Indrani V
Date Deposited: 09 Jul 2007
Last Modified: 24 May 2010 09:55
URI: http://nal-ir.nal.res.in/id/eprint/4240

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