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Stability analysis of the n-bladed system with blade-to-blade interaction
Proceedings of Global Power & Propulsion Society, 2023This paper presents a new approach based on simplified dynamic modelling of the blade and blade-to-blade interaction, which generally occurs due to flow structures with large extent such as tip clearance vortex. The model considers the blade-to-blade interaction as the primary cause of the local instability.
Youngkuk Yoon, Seung Jin Song
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Blade to blade vibration damper
The Journal of the Acoustical Society of America, 1983L'appareil ci-decrit permet l'amortissement effectif de l'energie vibratoire des aubes. The apparatus described above enables the effective damping of the vibratory energy of the blades. Les concepts concernent essentiellement l'amortissement dit aube-aube en comparaison a l'amortissement aube-sol.
John C. Jones +2 more
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An Improved Multiple Signal Classification for Nonuniform Sampling in Blade Tip Timing
IEEE Transactions on Instrumentation and Measurement, 2020Blade tip timing (BTT) is an effective noncontact measurement technology for rotating blade health monitoring. However, due to the mismatching between the high-speed rotation and the limited amount of probes, the signal collected from the BTT system is ...
Zengkun Wang +5 more
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Blade to blade vibration damper
The Journal of the Acoustical Society of America, 1985Apparatus for dampening rotor blade vibratory energy in a rotary machine is disclosed. Concepts employing blade to blade damping are discussed. In one detailed form, a damper (52) is disposed to seat against the undersides of adjacent blade platform sections (20) and a seal (42) is spaced sufficiently close to the damper so as to be deflected ...
Russell A. Schwarzmann +1 more
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Fan Blade Flutter: Single Blade Instability or Blade to Blade Coupling?
Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, 1985Different types of fan blade flutter occur at the various compressor flow regimes. Sub/transonic stall flutter and two forms of supersonic started flow flutter have been studied in a straight cascade wind tunnel. Results show clearly that these three common forms of flutter can exist as single-degree-of-freedom (single-blade instabilities).
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Wind Turbine Blade Breakage Monitoring With Deep Autoencoders
IEEE Transactions on Smart Grid, 2018Monitoring wind turbine blade breakages based on supervisory control and data acquisition (SCADA) data is investigated in this research. A preliminary data analysis is performed to demonstrate that existing SCADA features are unable to present irregular ...
Long Wang +3 more
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Proceedings of the 17th ACM conference on Computer and communications security, 2010
Web-based surreptitious malware infections (i.e., drive-by downloads) have become the primary method used to deliver malicious software onto computers across the Internet. To address this threat, we present a browser independent operating system kernel extension designed to eliminate driveby malware installations. The BLADE (Block All Drive-by download
Long Lu +3 more
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Web-based surreptitious malware infections (i.e., drive-by downloads) have become the primary method used to deliver malicious software onto computers across the Internet. To address this threat, we present a browser independent operating system kernel extension designed to eliminate driveby malware installations. The BLADE (Block All Drive-by download
Long Lu +3 more
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Semiotica, 2009
Who but a nostalgic reactionary would take an interest today in the version of Blade Runner that was originally released in 1982- With its anchoring voice-over and a happy ending,
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Who but a nostalgic reactionary would take an interest today in the version of Blade Runner that was originally released in 1982- With its anchoring voice-over and a happy ending,
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Y-type three-blade bluff body for wind energy harvesting
Applied Physics Letters, 2018A three-blade bluff body for wind energy harvesting is proposed and designed. The bluff body with a Y-type cross-section is formed by three rigid thin blades and fixed at the free end of a piezoelectric cantilever beam.
Fengrui Liu +4 more
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The Impact of Blade-to-Blade Flow Variability on Turbine Blade Cooling Performance
40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 2004The focus of this paper is the impact of manufacturing variability on turbine blade cooling flow and, subsequently, its impact on oxidation life. A simplified flow network model of the cooling air supply system and a row of blades is proposed. Using this simplified model, the controlling parameters which affect the distribution of cooling flow in a ...
Vince Sidwell, David Darmofal
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