Results 71 to 80 of about 569,378 (221)

Aircraft engine performance and integration in a flying wing aircraft conceptual design [PDF]

open access: yes, 2012
The increasing demand of more economical and environmentally friendly aero engines leads to the proposal of a new concept – geared turbofan. In this thesis, the characteristics of this kind of engine and relevant considerations of integration on a ...
Miao, Zhisong.
core   +3 more sources

Stress Redistribution During Dwell Fatigue in Ti‐6Al‐4V: In Situ Characterization and Crystal Plasticity Modeling

open access: yesFatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT This study of dwell fatigue in titanium alloys utilizes characterization and DIC to map stress redistribution within domains of microstructure during stress dwell‐loading. The estimation of stresses is based on knowledge of measured strains during the stress hold and at the unloaded state such that spatially resolved creep and stress ...
Yu Cao, Yang Liu, Fionn P. E. Dunne
wiley   +1 more source

Fuel-Supply Pressure Regulation in a Helicopter Fuel System Using a Constant-Pressure Reducing Valve

open access: yesAerospace
Engine-inlet fuel pressure in helicopters can fluctuate during flight manoeuvres because load-factor variation changes both fuel distribution in the tanks and the pressure balance along the fuel-supply pipeline.
Yecheng Nie   +4 more
doaj   +1 more source

On model-based aero engine diagnostics

open access: yes, 2023
Maintenance and diagnostics play a vital role in the aviation sector. This is especially true for the engines, being one of the most vital components. Lack of maintenance, or poor knowledge of the current health status of the engines, may lead to unforeseen disruptions and possibly catastrophic effects.
openaire   +2 more sources

Aero/structural tailoring of engine blades (AERO/STAEBL) [PDF]

open access: yes, 1988
This report describes the Aero/Structural Tailoring of Engine Blades (AERO/STAEBL) program, which is a computer code used to perform engine fan and compressor blade aero/structural numerical optimizations.
Brown, K. W.
core  

The Intersectional Dynamics of Skill Underutilization: A Case Study of College‐Educated Iranian Migrant Women in California

open access: yesSociological Forum, EarlyView.
ABSTRACT There are paradoxical and sociological questions surrounding migrants of certain ethno‐national backgrounds—particularly women—whose high levels of education do not consistently translate into employment commensurate with their skills, resulting in what is commonly termed “brain waste.” This study critically examines the role of employer ...
Homa Sadri
wiley   +1 more source

Early plasma administration in traumatic brain injuries: A systematic review

open access: yesTransfusion, EarlyView.
Abstract Background Early plasma may improve trauma resuscitation by addressing shock and coagulopathy, but its role in traumatic brain injury (TBI) remains uncertain. This systematic review evaluated early plasma in TBI. Methods This review followed Cochrane methodology and was registered in PROSPERO (CRD420261357882).
Umair Tahir   +7 more
wiley   +1 more source

Analysis of the Flow Capacity of Variable Cycle Split Fans at the Middle Speed

open access: yesEnergies
The next-generation variable cycle engine imposes stricter requirements on a fan’s flow capacity at the middle speed. To tackle this challenge, the implementation of split fans presents as a potential solution.
Guangfeng An   +4 more
doaj   +1 more source

Relationships Between Aerosols, Warm Clouds, and Meteorological Factors Associated With Environmental Conditions Derived From Multiyear ARM Observations

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 21, 16 November 2026.
Abstract We derive new aspects between clouds, aerosols, and meteorological factors using latest observations. We analyze multiyear measurements of atmospheric physical properties including warm clouds and aerosols collected at Atmospheric Radiation Measurement continental and maritime facilities during 2016–2020 and 2015–2021, respectively.
Yoshihide Takano   +4 more
wiley   +1 more source

Effects of End-Wall Suction on the Flow Field Structure and Aerodynamic Performance of a Compressor Cascade

open access: yesAerospace
With the advancement of aeroengines toward higher pressure and efficiency, the advantages and disadvantages of the compressor working environment significantly affect the whole machine’s performance.
Wenfeng Xu   +4 more
doaj   +1 more source

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