+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + NASA Center + Publication Year + Subject + Availability Options + Item/Media Type Selected Navigations: Author > Fleeter, Sanford [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 38 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order 1 2 3 4 Next  Aerodynamics of a linear oscillating cascade Author(s): Buffum, Daniel H.; Fleeter, Sanford Abstract: The steady and unsteady aerodynamics of a linear oscillating cascade are investigated using experimental and computational methods. Experiments are performed to quantify the torsion mode oscillating cascade aerodynamics of ... NASA Center: Glenn Research Center Publication Year: 1990 Added to NTRS: 2005-10-13 Accession Number: 90N27657; Document ID: 19900018341; Report Number: E-5677, NAS 1.15:103250, NASA-TM-103250 Active Suppression of Aerodynamic Instabilities in Centrifugal Compressors Author(s): Fleeter, Sanford Abstract: The operating range of a compressor is bounded by the surge and choke lines on a performance map. The barrier posed by the surge line is of particular interest due to its proximity to the maximum efficiency points of the ... NASA Center: Glenn Research Center Publication Year: 1994 Added to NTRS: 2005-08-25 Accession Number: 97N72520; Document ID: 19970040808; Report Number: NAS 1.26:206024, NASA/CR-97-206024 Wind tunnel wall effects in a linear oscillating cascade Author(s): Buffum, Daniel H.; Fleeter, Sanford Abstract: Experiments in a linear oscillating cascade reveal that the wind tunnel walls enclosing the airfoils have, in some cases, a detrimental effect on the oscillating cascade aerodynamics. In a subsonic flow field, biconvex ... NASA Center: Glenn Research Center Publication Year: 1991 Added to NTRS: 2005-08-25 Accession Number: 91N19098; Document ID: 19910009785; Report Number: E-5909, NAS 1.15:103690, NASA-TM-103690 Effect of wind tunnel acoustic modes on linear oscillating cascade aerodynamics Author(s): Buffum, Daniel H.; Fleeter, Sanford Abstract: The aerodynamics of a biconvex airfoil cascade oscillating in torsion is investigated using the unsteady aerodynamic influence coefficient technique. For subsonic flow and reduced frequencies as large as 0.9, airfoil surface ... NASA Center: Glenn Research Center Publication Year: 1993 Added to NTRS: 2005-08-25 Accession Number: 94N15866; Document ID: 19940011393; Report Number: E-8171, NAS 1.15:106367, NASA-TM-106367 Experimental investigation of transonic oscillating cascade aerodynamics Author(s): Buffum, Daniel H.; Fleeter, Sanford Abstract: Fundamental experiments are performed in the NASA Lewis Transonic Oscillating Cascade Facility to investigate the subsonic and transonic aerodynamics of cascaded airfoils executing torsion mode oscillations at realistic ... NASA Center: Glenn Research Center Publication Year: 1989 Added to NTRS: 2005-08-25 Accession Number: 89N20133; Document ID: 19890010762; Report Number: E-4697, NAS 1.15:101993, NASA-TM-101993 The effect of prewhirl on the internal aerodynamics and performance of a mixed flow research centrifugal compressor Author(s): Bryan, William B.; Fleeter, Sanford Abstract: The internal three-dimensional steady and time-varying flow through the diffusing elements of a centrifugal impeller were investigated using a moderate scale, subsonic, mixed flow research compressor facility. The ... NASA Center: NASA (non Center Specific) Publication Year: 1987 Added to NTRS: 2005-08-25 Accession Number: 89N19503; Document ID: 19890010132; Report Number: AVSCOM-TR-87-C-35, ME-TSPC-TR-87-13, NAS 1.26:184756, NASA-CR-184756 Unsteady aerodynamics of an oscillating cascade in a compressible flow field Author(s): Buffum, Daniel H.; Boldman, Donald R.; Fleeter, Sanford Abstract: Fundamental experiments were performed in the NASA Lewis Transonic Oscillating Cascade Facility to investigate and quantify the unsteady aerodynamics of a cascade of biconvex airfoils executing torsion-mode oscillations at ... NASA Center: Glenn Research Center Publication Year: 1987 Added to NTRS: 2005-08-25 Accession Number: 88N13346; Document ID: 19880003964; Report Number: E-3830, NAS 1.15:100219, NASA-TM-100219 Unsteady incompressible aerodynamics and forced response of detuned blade rows Author(s): Chiang, Hsiao-Wei D.; Fleeter, Sanford Abstract: A mathematical model is developed and utilized to demonstrate the enhanced forced response behavior associated with aerodynamic, structural, and combined aerodynamic-structural detuning of a loaded rotor operating in an ... NASA Center: NASA (non Center Specific) Publication Year: 1990 Added to NTRS: 2004-11-03 Accession Number: 90A19805; Document ID: 19900032750; Report Number: AIAA PAPER 90-0340 Simultaneous Active Source Control of Blade Row Interaction Generated Discrete Tones Author(s): Sawyer, Scott; Fleeter, Sanford Abstract: Unsteady blade row interactions in turbomachines generate discrete-frequency tones at blade pass frequency and its harmonics. Specific circumferential acoustic modes are generated. However, only certain of these modes ... NASA Center: Glenn Research Center Publication Year: 1999 Added to NTRS: 2004-11-03 Document ID: 20000020802 Forcing function modeling for flow induced vibration Author(s): Fleeter, Sanford Abstract: The fundamental forcing function unsteady aerodynamics for application to turbomachine blade row forced response are considered, accomplished through a series of experiments performed in a rotating annular cascade and a ... NASA Center: Glenn Research Center Publication Year: 1993 Added to NTRS: 2004-11-03 Accession Number: 93A54003; Document ID: 19930070006; Report Number: ISABE 93-7027 1 2 3 4 Next  + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007