12th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference and 14th AIAA/ISSMO Multidisciplinary Analysis And 2012
DOI: 10.2514/6.2012-5409
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Noise Assessment of NASA Environmentally Responsible Aviation (ERA) Technologies and Concepts

Abstract: We present a comprehensive assessment of NASA Environmentally Responsible Aviation Project technologies across aircraft component, single event, and multi-event levels. Modeling capabilities appropriate for each level of abstraction are introduced. We examine noise technologies in terms of component-level performance effects, modeling considerations, and aircraft-level impacts. Single event performance results include discussion of reference vehicle models and their accuracy, as well as modeled vehicle perform… Show more

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“…21 The drawback of particularly high bypass fans is that shocks can occur near the tips of the blades which would increase noise. Therefore the fan speed and resultantly the fan pressure ratio (FPR) should be kept lower to minimize fan noise.…”
Section: A Multi-disciplinary Engine Studiesmentioning
confidence: 99%
“…21 The drawback of particularly high bypass fans is that shocks can occur near the tips of the blades which would increase noise. Therefore the fan speed and resultantly the fan pressure ratio (FPR) should be kept lower to minimize fan noise.…”
Section: A Multi-disciplinary Engine Studiesmentioning
confidence: 99%