Blade Tip Timing
A comparison of blade tip timing data analysis methods
... The blade tip timing data analysis methods presented in this work were applied to simulated data obtained from a simple mathematical model of the forced synchronous response of a rotating bladed ...
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A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part II: Experimental Validation
... of blade tip timing (BTT) as a method for measuring vibrations in rotating bladed assem- blies have already been discussed in Part I of this ...
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A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part I: Theoretical Development
... On balance, the Prony-based techniques appear to yield more accurate results for the asynchronous engine order while the exact methods are more accurate for the synchronous engine order.[r] ...
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Multidisciplinary Design Optimization (MDO) of Transonic Fan Blade
... stress blade design has reduced maximum stress by 37% and improved efficiency, pressure ratio and mass flow rate by 1.35%, 1.54%, and 1.41% respectively. In the work carried out by Deng, Guo et al. [75], ...
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The Dystopian Cityscape in Ridley Scott's 'Blade Runner'
... In Blade Runner, the overall controlling entity may very well be the city itself precisely because of its conception as a manifestation of powers emanating from human ...uses blade runners to enforce the ...
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LES based aerothermal modeling of turbine blade cooling systems
... The first section provides a non-dimensional analysis of the cooling channel issue in order to categorize all the physical phenomena at play. A general description of turbulent flows in an inertial reference frame, out ...
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AFM tip effect on a thin liquid film
... monotonically, approaching each other in magnitude as E* decreases from E γ * toward smaller values. Hence, the effect of the proximity of the substrate dominates over that of the surface tension, and the position of the ...
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AFM tip effect on a thin liquid film
... localized tip effect is observed. This tip effect is characterized by the small magnitude of the deformation and an important restriction of its radial extent λ F localized below the ...
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Study of A Flexible Blade for Optimized Proprotor
... the blade deformation under airloads and centrifugal loads, the coupled FSI model of the proprotor combines the aerodynamic model - BEMT and structural analysis model model - FBEAM, which was developed by ...
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Analysis of the Blade Element Momentum Theory
... The purpose of this article is to analyze the Blade element momentum theory from a mathematical point of view. The results we obtain in the course of this analysis will elucidate issues related to the ...
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Influence of the Blade Number on Inducer Cavitating Behavior
... Some of these results are consistent with the numerical study reported previously by Horiguchi et al. [ 17 ], which was devoted to the investigation of the effect of the blade number on stable and unstable modes ...
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Active helicopter rotor control using blade-mounted actuators
... Much research effort has been directed at the use of swashplate actuation for higher harmonic control (HHC), in which most of the control effort is centered at the NQ[r] ...
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Evacuation Timing in Apartment Buildings
... At the National Research Council of Canada (NRCC), researchers at the National Fire Laboratory in the Institute for Research in Construction are developing a Fire Risk- Cost Assessm[r] ...
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Clockwork: Tracking Remote Timing Attacks
... The problem is challenging because there are many ways to set up timing leaks in a program. For example, after branching on a secret the program might take different time in the branches because of: (i) more ...
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Timing verification in transaction modeling
... – Programmer’s View with Timing (PV+T) – Cycle Callable (CC). TLM abstracts away the number of events and the amount of information that has to be processed during simulation of the minimum required. In SystemC, ...
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LE TIMING DE L'ANNONCE DES BENEFICES ET DES TRANSFERTS D'INFORMATION
... • Cinquièmement, nous examinerons la relation simultanée entre l’ordre dans lequel l’annonce est faite et le fait que les firmes compétitrices d’un même secteur industriel aient ou non[r] ...
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Study of A Flexible Blade for Optimized Proprotor
... to angle of attack and Reynolds numbers. The Ncrit to predict the flow transition is 0.1 for rotor and 7.0 for propeller corresponding to different turbulence intensities [12, 13]. Fig. 1 and Fig. 2 show the interpolated ...
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H-Darrieus wind turbine with blade pitch control
... CARDAAV has the capability to analyze several prede- fined or user-defined rotor shapes with straight or curved blades (parabola, catenary, ideal and modified troposkien, and Sandia shape). The code requires three main ...
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Blade mounted actuation for helicopter rotor control
... Although some differences exist, the state space model should provide an adequate approximation to the blade response, because the state space parameters were chosen[r] ...
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Modelling of Ice-Propeller Blade Impact Experiments
... Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Modelling of Ice-Propeller Blade Impact Experiments. Sayed, M..[r] ...
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