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There are a total of 11 record(s) matching your query.
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Life and reliability of rotating disks
Author(s): Zaretsky, Erwin V.; Smith, Todd E.; August, Richard
Abstract: In aerospace applications, an engineer must be especially cognizant of size and weight constraints which affect design decisions. Although designing at or below the material fatigue limit may be desirable in most industrial ...
NASA Center: Glenn Research Center
Publication Year: 1988
Added to NTRS: 2008-05-30
Accession Number: 88N22428; Document ID: 19880013044
Vibration and flutter analysis of the SR-7L large-scale propfan
Author(s): August, Richard
Abstract: A structural and aeroelastic analysis of the SR-7L advanced turboprop is presented. Analyses were conducted for several cases at different blade pitch angles, blade support conditions, rotational speeds, free-stream Mach ...
NASA Center: NASA (non Center Specific)
Publication Year: 1988
Added to NTRS: 2008-05-30
Accession Number: 88N23254; Document ID: 19880013870
Vibration and flutter characteristics of the SR7L large-scale propfan
Author(s): August, Richard; Kaza, Krishna Rao V.
Abstract: An investigation of the vibration characteristics and aeroelastic stability of the SR7L Large-Scale Advanced Propfan was performed using a finite element blade model and an improved aeroelasticity code. Analyses were ...
NASA Center: Glenn Research Center
Publication Year: 1988
Added to NTRS: 2005-10-13
Accession Number: 88N18036; Document ID: 19880008652; Report Number: E-3908, NAS 1.15:100272, NASA-TM-100272
Predicting Life And Reliability Of A Rotating Disk
Author(s): Zaretsky, Erwin V.; Smith, Todd E.; August, Richard
Abstract: Report of generalized method for prediction of fatigue life and reliability of rotating disk. Method incorporates computation of life, at given probability of survival, of elemental stressed volumes within body of disk. ...
NASA Center: Glenn Research Center
Publication Year: 1988
Added to NTRS: 2005-09-30
Accession Number: 88B10436; Document ID: 19880000436; Report Number: LEW-14582
Using Finite-Element Analysis In Estimating Reliability
Author(s): Zaretsky, Erwin V.; August, Richard
Abstract: Method of estimating design survivability of structural component incorporates finite-element and probabilistic properties of materials. Involves evaluation of design parameters through direct comparisons of survivability of ...
NASA Center: Glenn Research Center
Publication Year: 1994
Added to NTRS: 2005-09-30
Accession Number: 94B10701; Document ID: 19940000701; Report Number: LEW-15864
ASTROP3 user's guide
Author(s): August, Richard
Abstract: ASTROP3 (Aeroelastic Stability and Response of Propulsion Systems) is a FORTRAN computer code developed for calculating the performance and dynamic stability (classical flutter) of single rotation propfans. ...
NASA Center: NASA (non Center Specific)
Publication Year: 1991
Added to NTRS: 2005-08-25
Accession Number: 91N30562; Document ID: 19910021248; Report Number: E-6477, NAS 1.26:187180, NASA-CR-187180
Vibration, performance, flutter and forced response characteristics of a large-scale propfan and its aeroelastic model
Author(s): August, Richard; Kaza, Krishna Rao V.
Abstract: An investigation of the vibration, performance, flutter, and forced response of the large-scale propfan, SR7L, and its aeroelastic model, SR7A, has been performed by applying available structural and aeroelastic analytical ...
NASA Center: Glenn Research Center
Publication Year: 1988
Added to NTRS: 2005-08-25
Accession Number: 89N10043; Document ID: 19890000672; Report Number: AIAA PAPER 88-3155, E-4260, NAS 1.15:101322, NASA-TM-101322
Incorporating finite element analysis into component life and reliability
Author(s): August, Richard; Zaretsky, Erwin V.
Abstract: A method for calculating a component's design survivability by incorporating finite element analysis and probabilistic material properties was developed. The method evaluates design parameters through direct comparisons of ...
NASA Center: Glenn Research Center
Publication Year: 1991
Added to NTRS: 2005-08-25
Accession Number: 91N23550; Document ID: 19910014237; Report Number: E-6220, NAS 1.15:104400, NASA-TM-104400
Probabilistic Analysis of Aircraft Gas Turbine Disk Life and Reliability
Author(s): Melis, Matthew E.; Zaretsky, Erwin V.; August, Richard
Abstract: Two series of low cycle fatigue (LCF) test data for two groups of different aircraft gas turbine engine compressor disk geometries were reanalyzed and compared using Weibull statistics. Both groups of disks were manufactured ...
NASA Center: Glenn Research Center
Publication Year: 1999
Added to NTRS: 2005-08-25
Document ID: 19990064381; Report Number: E-10629-2, NAS 1.15:107436, NASA/TM-1999-107436
Effect of hoop stress on ball bearing life prediction
Author(s): Zaretsky, Erwin V.; August, Richard; Coe, Harold H.
Abstract: A finite-element analysis (FEA) of a generic, dimensionally normalized inner race of an angular-contact ball bearing was performed under varying conditions of speed and the press (or interference) fit of the inner-race bore ...
NASA Center: Glenn Research Center
Publication Year: 1995
Added to NTRS: 2005-08-25
Accession Number: 95N27178; Document ID: 19950020758; Report Number: E-9497, NAS 1.15:106874, NASA-TM-106874
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