Labyrinth Seal Effects on Rotor Bearing System Stability.

reportActive / Technical Report | Accession Number: ADA116774 | Open PDF

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

Author(s):
Pavelko, Anthony John
Author Organization(s):
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
Descriptive Note:
Master's thesis,
Pagination:
0170

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFIT/NR/82-10T
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5.3_Planning; JCA_1_Force Support; JCA_1.4.2_Health Service Delivery; JCA_1.4_Force Support; JCA_1.2_Force Preparation; JCA_1.3_Human Capital Management; JCA_8.2.1_Partner with Governments and Institutions; JCA_8.2_Shape; JCA_8_Building Partnerships; JCA_1.3.2_Personnel Management; JCA_1.2.5_Lessons Learned; JCA_4.6_Engineering
Modernization Areas:
Fully Networked C3
Communities of Interest:
Air Platforms
Descriptor(s):
*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
Field(s)/Group(s):
Adhesives, Seals and Binders, Theoretical Mathematics, Machinery and Tools
Keyword(s):
Linear analytical models, Labyrinth seals, Linear model programming, Rotor bearings
Report Date:
1982 May 01