Accession Number : ADA302858

Title :   A Systematic Approach to Vibration Analysis for a Gas Turbine Engine.

Descriptive Note : Final rept. Feb-Aug 95,

Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Korjack, T. A.

PDF Url : ADA302858

Report Date : NOV 1995

Pagination or Media Count : 63

Abstract : The vibrational phenomena of the Ml gas turbine engine is analyzed from a fundamental/elementary approach based on first principles. Insight was gained on the basic dynamic forces under play in many components and assemblies of an actual turbine engine, with particular emphasis on torsional-spring mass systems. Since very little, if any, analysis of this particular type of engine has been conducted, it was necessary to gain familiarity with the vibratory signatures of this application in order to assess the possible operating modes/normalities of a typical fielded engine. Lumped parameter methods are very good for analyzing individual components and for a snapshot into further areas of investigation. After spectrum analyses will be performed, a detailed investigation can then follow up, premised upon many principles introduced in this report.

Descriptors :   *VIBRATION, *GAS TURBINES, *TANKS(COMBAT VEHICLES), ENGINE COMPONENTS, DISPLACEMENT, DAMPING, DEGREES OF FREEDOM, DIFFERENTIAL EQUATIONS, BEARINGS, VISCOUS FLOW, SPECTRUM ANALYSIS, TORSION, SPRINGS, VIBRATIONAL SPECTRA, TANK ENGINES, INLET GUIDE VANES.

Subject Categories : Combat Vehicles
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE