Sp643different Diagnostic and Prognostic Power of All Causes and Cardiovascular Mortality Between Phosphorus and C Reactive Protein

Paola, Luciano De; Vatrano, Marco; Coppolino, Giuseppe; Donato, Cinzia; Panzino, Maria Teresa; D’Onofrio, Giuseppina; Chiarella, Salvatore; Panzino, Antonio; Mileti, Salvatore; Pinciaroli, Angela Rosa

doi:10.1093/ndt/gfx154.sp643

Cited by 1 publication

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“…3C. It can be clearly seen that anti-phase rotor design creates a non-planar wake that effectively makes the anti-phase rotor design to exhibit a similar wake behavior as a stacked co-rotating rotor design which has recently been proposed by Uber as a means for rotor noise suppression [19]. Figure 3B shows a wake with an increased strength shed off the preceding airfoil while the following blade sheds off a much weaker wake.…”

Section: Anti-phase Rotor Conceptsmentioning

confidence: 81%

Investigation of Anti-Phase Asymmetric Quiet Rotor Technology

Cramer

Nguyen

Hernandez

et al. 2019

AIAA Scitech 2019 Forum

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The future of urban air mobility has a well-known tall pole challenge in the form of community acceptance which largely comes from the noise. This paper presents a proposed antiphase rotor technology that could reduce noise sources such as blade vortex interaction noise. The anti-phase rotor technology includes a rotor design with various anti-phase alternating trailing edge patterns and a rotor design with an asymmetric blade tip. Four small-scale antiphase rotors are fabricated by 3D printing for acoustic measurements conducted in a low-speed open-circuit wind tunnel to assess the effectiveness of the proposed anti-phase rotor technology. Preliminary test results appear to be promising and indicate that the anti-phase rotor designs could be a practical means of reducing blade vortex interactions and noise. The four tested antiphase rotor designs have peak acoustic performance depending on the RPM and thrust which suggests improved performance through design optimization could be achieved for specific mission requirements.

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Section: Anti-phase Rotor Conceptsmentioning

confidence: 81%