Results 21 to 30 of about 2,724,057 (240)

Experimental investigation of a high aspect ratio, low speed contra-rotating fan stage with complex inflow distortion

open access: yesPropulsion and Power Research, 2014
This paper focuses on the response of a high aspect ratio, low speed contra-rotating fan with complex inflow distortion. The total pressure at the inlet is artificially distorted by means of two different sets of screens with different porosities to ...
Chetan Mistry, A.M. Pradeep
doaj   +1 more source

A new intake distortion design system for research

open access: yesXibei Gongye Daxue Xuebao, 2023
The intake distortion experiment is one of the important methods for aero-engine aerodynamic stability assessment. In this paper, in order to overcome the shortcomings of traditional design methods such as low accuracy in approximating the target ...
CUI Jiahang   +5 more
doaj   +1 more source

JET ENGINE INLET DISTORTION SCREEN AND DESCRIPTOR EVALUATION

open access: yesActa Polytechnica, 2017
Total pressure distortion is one of the three basic flow distortions (total pressure, total temperature and swirl distortion) that might appear at the inlet of a gas turbine engine (GTE) during operation.
Jiří Pečinka   +3 more
doaj   +1 more source

Aerodynamic Shape Optimization of an Aircraft Propulsor Air Intake with Boundary Layer Ingestion

open access: yesApplied Mechanics, 2022
The growth of the airline industry has highlighted the need for more environmentally conscious aviation, leading to the conceptualization of more fuel-efficient aircraft.
Ayesh Sudasinghe   +4 more
doaj   +1 more source

A Study on the Stall Detection of an Axial Compressor through Pressure Analysis

open access: yesApplied Sciences, 2017
In order to research the inherent working laws of compressors nearing stall state, a series of compressor experiments are conducted. With the help of fast Fourier transform, the amplitude–frequency characteristics of pressures at the compressor inlet ...
Haoying Chen   +3 more
doaj   +1 more source

Numerical Simulation on the Influence of Inlet Flow Characteristics on the Performance of a Centrifugal Compressor

open access: yesEnergies, 2023
Although inlet bent pipes are usually adopted due to limited installation space, the influences of different bend pipes on the inlet flow characteristics and performance of centrifugal compressors are still unclear.
Xing Li   +6 more
doaj   +1 more source

A Modified Circumferentially Averaged Method for Compressor Performance under Inlet Distortion

open access: yesAerospace, 2023
Inlet distortion detrimentally affects the aerodynamic performance and lessens the stability of compressors, and has received considerable attention. The need to accurately estimate its effect on the performance and stability of compressor as early as ...
Yang Zhao, Donghai Jin, Xingmin Gui
doaj   +1 more source

Intermodulation distortion performance enhancement of microwave power amplifiers [PDF]

open access: yes, 2000
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis reports the author's investigation of the effects of the injection of specific signals on the intermodulation distortion performance of ...
Mbabele, M., Mbabele, Modeste
core   +7 more sources

Energy Effects of Ground Vortex-Induced Flow Distortion and Foreign Object Ingestion in Aeroengine Intakes

open access: yesEnergies
Ground vortex formation beneath aeroengine intakes during near-ground operations represents an energy-related aerodynamic issue, as it degrades inlet flow quality, induces pressure distortion, and reduces the effective utilization of incoming kinetic ...
Longqing Lei   +4 more
doaj   +1 more source

Evaluation of system-related magnetic resonance imaging geometric distortion in radiation therapy treatment planning: two approaches and effectiveness of three-dimensional distortion correction [PDF]

open access: yes, 2022
We propose two methods to evaluate system-related distortion in magnetic resonance imaging (MRI) in radiation therapy treatment planning (RTP) and demonstrate the importance of three-dimensional (3D) distortion correction (DC) by quantitatively measuring
Kamomae, Takeshi   +7 more
core   +1 more source

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