Results 191 to 200 of about 431 (222)
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A Methodology for Assessing Inlet Swirl Distortion
2017<div class="section abstract"> <div class="htmlview paragraph">This Aerospace Information Report (AIR) addresses the subject of aircraft inlet-swirl distortion. A structured methodology for characterizing steady-state swirl distortion in terms of swirl descriptors and for correlating the swirl descriptors with loss in stability pressure ...
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A Centrifugal Compressor Operability Correlation With Combined Total Pressure and Swirl Distortion
Volume 1: Aircraft Engine; Fans and Blowers; Marine; Honors and Awards, 2017Inlet swirl distortion has become a major area of concern in the gas turbine engine community. Gas turbine engines are increasingly installed with more complicated and tortuous inlet systems, like those found on embedded installations on Unmanned Aerial Vehicles (UAVs) and Auxiliary Power Units (APU).
Yogi Sheoran +3 more
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Volume 1: Aircraft Engine; Fans and Blowers, 2020
Abstract Over the last decade, the Turbomachinery and Propulsion Research Laboratory at Virginia Tech has researched, invented, developed, computationally analyzed, experimentally tested, and improved turbofan engine inlet distortion generators.
Walter O'brien +2 more
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Abstract Over the last decade, the Turbomachinery and Propulsion Research Laboratory at Virginia Tech has researched, invented, developed, computationally analyzed, experimentally tested, and improved turbofan engine inlet distortion generators.
Walter O'brien +2 more
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Flutter Parameter Study on a Complex Inlet Swirl Distortion Generator
Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive ManufacturingAbstract StreamVane devices consist of a custom designed complex vane pack that is used to produce inlet swirl distortion for fan tests, compressor tests, and ground testing of jet engines. Due to being placed upstream of these expensive test rigs, their structural integrity is very important.
Cole Hefner +5 more
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A Versatile Design of a Controlled Swirl Distortion Generator for Testing Gas Turbine Engines
Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Manufacturing, Materials and Metallurgy; Microturbines and Small Turbomachinery, 2008Inlet swirl distortion has recently become a major area of concern in the gas turbine engine community. Gas turbine engines are being installed in embedded installations that are downstream of increasingly complicated inlet systems, such as those used in Unmanned Aerial Vehicles (UAVs). These inlet systems can produce complex swirl patterns in addition
Yogi Sheoran, Bruce Bouldin
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Calculation of various diffuser flows with inlet swirl and inlet distortion effects
AIAA Journal, 1983A method of predicting the properties of various turbulent flows in planar, conical, and annular diffusers with inlet swirl and inlet distortion effects has been developed and appraised. The numerical scheme is based on the fully conservative control volume representation of governing conservation equations.
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Volume 6A: Turbomachinery, 2013
The ingestion or manifestation of a vortical flow can have dramatic effects on an aero engine. It is therefore imperative to quantify these effects and understand their underlying mechanism. This numerical study analyses the response of a transonic compressor stage to the ingestion of different streamwise vortical distortions using steady-state CFD ...
Taieb Ben Sghaier +3 more
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The ingestion or manifestation of a vortical flow can have dramatic effects on an aero engine. It is therefore imperative to quantify these effects and understand their underlying mechanism. This numerical study analyses the response of a transonic compressor stage to the ingestion of different streamwise vortical distortions using steady-state CFD ...
Taieb Ben Sghaier +3 more
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Effects of Inlet Distortion Patterns on Induced Swirl in a Highly Loaded Fan Stage
Volume 2A: Turbomachinery, 2020Abstract Characterization of distortion transfer and generation through fans with distorted inlet conditions enables progress towards designs with improved distortion tolerance. The abruptness of transition from undistorted to distorted total pressure regions at the inlet impacts the induced swirl profile and therefore the distortion ...
Andrew D. Orme +2 more
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Flutter Testing Methodology for Swirl Distortion Generators
AIAA SCITECH 2023 Forum, 2023Cole Hefner +4 more
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StreamVane Turbofan Inlet Swirl Distortion Generator: Mean Flow and Turbulence Structure
Journal of Propulsion and Power, 2018Engine/airframe integration in advanced aircraft concepts must account for nonuniform flows ingested by turbofan engines.
Tamara Guimarães +2 more
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