Results 31 to 40 of about 3,344 (250)

Harmonic Forcing from Distortion in a Boundary Layer Ingesting Fan

open access: yesAerospace, 2021
Integrating a fan with a boundary layer ingestion (BLI) configuration into an aircraft fuselage can improve propulsion efficiency by utilizing the lower momentum airflow in the boundary layer developed due to the surface drag of the fuselage.
Hans Mårtensson
doaj   +1 more source

Propeller Influence on Surface Pressure Fluctuation Under Boundary Layer Ingestion Condition

open access: yes, 2023
Research on propeller noise under boundary layer ingestion condition is essential for designing new aircraft concepts. Measurements of pressure spectra on a flat plate below a propeller give important information about the noise coming from the blades ...
Venner, Cornelis H.   +1 more
core   +1 more source

Experimental and Computational Analysis of Model–Support Interference in Low-Speed Wind-Tunnel Testing of Fuselage-Boundary-Layer Ingestion [PDF]

open access: yesMATEC Web of Conferences, 2019
Junction flow caused by the aerodynamic interaction between a wind-tunnel model and the support structure can largely influence the flowfield and hence the experimental results.
Della Corte Biagio   +3 more
doaj   +1 more source

Toward more electric powertrains in aircraft: Technical challenges and advancements

open access: yesCES Transactions on Electrical Machines and Systems, 2021
The main purpose of this article is to provide an instructive review of the technological challenges hindering the road toward more electric powertrains in aircraft.
Joseph Benzaquen   +2 more
doaj   +1 more source

Turboelectric Distributed Propulsion System Modelling [PDF]

open access: yes, 2013
The Blended-Wing-Body is a conceptual aircraft design with rear-mounted, over wing engines. Turboelectric distributed propulsion system with boundary layer ingestion has been considered for this aircraft.
Liu, Chengyuan
core  

Approach to Modeling Boundary Layer Ingestion Using a Fully Coupled Propulsion-RANS Model

open access: yes, 2017
Airframe-propulsion integration concepts that use boundary layer ingestion have the potential to reduce aircraft fuel burn. One concept that has been recently explored is NASA's Starc-ABL aircraft configuration, which offers the potential for 12% mission
Gray, Justin S.   +10 more
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Influences of distributed propulsion system parameters on aerodynamic characteristics of a BLI-BWB UAV

open access: yesXibei Gongye Daxue Xuebao, 2021
Focusing on the aerodynamic characteristics of the blended wing body (BWB) aircraft with boundary layer ingestion(BLI) distributed propulsion system; the influences of propulsion system parameters under the condition of cruise and takeoff are studied ...

doaj   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

Adjoint Based Design Approach for Boundary Layer Ingestion Offset Intake

open access: yes, 2009
The design of boundary layer ingestion offset intake is conducted by using a gradientbased optimization method. A large amount of boundary layer ingestion into flush-mounted intake on a configuration surface can cause total pressure loss and distortion ...
Lee, Byung Joon   +3 more
core   +1 more source

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