Accession Number : ADA116774

Title :   Labyrinth Seal Effects on Rotor Bearing System Stability.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s) : Pavelko,Anthony John

PDF Url : ADA116774

Report Date : May 1982

Pagination or Media Count : 170

Abstract : This thesis presents a stability analysis of rotor bearing system operation affected by a single labyrinth seal. Labyrinth seals, primarily intended for leakage control in turbines, have been observed to affect rotor stability in high pressure steam turbines. A small experimental rotor bearing system, existing in the Mechanical Engineering Department, and a compatible labyrinth seal are the subjects of this analysis. Linear analytical models of these rotor bearing and labyrinth seal systems, both isolated and coupled, are developed. Labyrinth seal geometry and pressure variations generate various affects on rotor bearing system stability. These affects can help develop labyrinth seal design criteria directed toward high pressure turbine stability enhancement. (Author)

Descriptors :   *Bearings, *Rotors, *Steam turbines, *Mathematical models, *Seals(Stoppers), Linear algebraic equations, High pressure, Test methods, Variable pressure, Control, Standards, Theses, Operation, Nonlinear algebraic equations, Simulation, Linear programming

Subject Categories : Adhesives, Seals and Binders
      Theoretical Mathematics
      Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE