NDLI: Cage stability analysis for ssme hpotp bearings

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Cage stability analysis for ssme hpotp bearings

Content Provider	NASA Technical Reports Server (NTRS)
Author	Merriman, T. L. Kannel, J. W.
Copyright Year	1988
Description	A numerical model of cage motion (CAGEDYN) was used to analyze the stability of bearing cages in the Space Shuttle main engine (SSME) high pressure oxygen turbopump (HPOTP). The stability of existing bearing geometries, as well as perturbations of these geometries, was analyzed for various operating conditions. Results of the analyses show that some combinations of operating parameters, exacerbated by the sparse lubrication that exist in the HPOTP bearings, can cause unstable cage oscillations. Frequencies of cage oscillations were predicted by the CAGEDYN numerical model by Fourier analysis of predicted cage motions. Under conditions that cause unstable cage motion, high frequency oscillations were predicted that could cause premature cage failures.
File Size	433989
Page Count	13
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19900019309
Archival Resource Key	ark:/13960/t77t2kw9z
Language	English
Publisher Date	1988-09-01
Access Restriction	Open
Subject Keyword	Mechanical Engineering Service Life Ball Bearings Wear Failure Analysis Space Shuttle Main Engine Linings Oscillations Mathematical Models Lubrication Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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