Results 61 to 70 of about 115,506 (175)

A comprehensive well-to-wake climate impact assessment of sustainable aviation fuel

open access: yesScientific Reports
The aviation industry and policymakers are advocating Sustainable Aviation Fuels (SAF) as one of the main pillars for making the aviation industry sustainable. However, regulatory frameworks like CORSIA and the EU Renewable Energy Directive often exclude
Luc Boerboom   +3 more
doaj   +1 more source

[NASA/DOD Aerospace Knowledge Diffusion Research Project. Paper 7:] The NASA/DOD Aerospace Knowledge Diffusion Research Project: The DOD perspective [PDF]

open access: yes
This project will provide descriptive and analytical data regarding the flow of STI at the individual, organizational, national, and international levels.
Kennedy, John M., Pinelli, Thomas E.
core   +1 more source

Improving supply chain management in construction: what can be learned from the aerospace industry? [PDF]

open access: yes, 2003
In order to provide for controllable delivery, reliable lead times and efficient customer response, lean manufacturing and platform assembly practices play an important role in supply chains in the aerospace industry.
Voordijk, H., Vrijhoef, R.
core   +1 more source

Evolutionary design of a full-envelope full-authority flight control system for an unstable high-performance aircraft [PDF]

open access: yes, 2011
The use of an evolutionary algorithm in the framework of H1 control theory is being considered as a means for synthesizing controller gains that minimize a weighted combination of the infinite norm of the sensitivity function (for disturbance attenuation
Abzug M. J.   +9 more
core   +1 more source

On the aeroacoustic properties of a beveled plate

open access: yesE3S Web of Conferences, 2015
The flow around a beveled flat plate model with an asymmetric 25 degrees trailing edge with three rounding radii is analyzed using a Navier-Stokes based open source software package OpenFOAM in order to predict the aeroacoustic properties of the models ...
van der Velden W.C.P.   +3 more
doaj   +1 more source

NASA/DOD Aerospace Knowledge Diffusion Research Project. Report 9: Summary report to phase 3 faculty and student respondents including frequency distributions [PDF]

open access: yes
This project is designed to explore the diffusion of scientific and technical information (STI) throughout the aerospace industry. The increased international competition and cooperation in the industry promises to significantly affect the STI standards ...
Kennedy, John M.   +2 more
core   +1 more source

Effect of Plate Thickness on Tensile Property of Ti–6Al–4V Alloy Joint Friction Stir Welded Below β-Transus Temperature

open access: yesHigh Temperature Materials and Processes, 2017
Defect-free joint of Ti–6Al–4V alloy was successfully friction stir welded below β-transus temperature and then tensile tests were performed. Microstructure, macrostructure, tensile properties and fracture position are mainly discussed in order to ...
Ji Shude   +5 more
doaj   +1 more source

NASA-universities relationships in aero/space engineering: A review of NASA's program [PDF]

open access: yes
NASA is concerned about the health of aerospace engineering departments at U.S. universities. The number of advanced degrees in aerospace engineering has declined.

core   +1 more source

Longitudial fluctuations of rotors of disk knife refiners [PDF]

open access: yes, 2020
The subject of the study is the longitudinal fluctuations of the rotors of disk knife refiners. The dynamic and mathematical models of rotors of disk mills are developed.
Vikharev, S. N.
core  

Surface modification of natural porous silica microparticles to control the loading and release of organic corrosion inhibitors in coatings

open access: yesNPG Asia Materials
Recent works have shown the potential of diatomaceous earth (DE) as an efficient and environmentally friendly storage system for active chemicals such as corrosion inhibitors in coatings. The storage of organic inhibitors is nevertheless challenging.
Jingjing Zhao   +2 more
doaj   +1 more source

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