Results 81 to 90 of about 834,619 (373)

Macroscopic-Level Collaborative Optimization Framework for IADS: Multiple-Route Terminal Maneuvering Area Scheduling Problem

open access: yesAerospace
The terminal maneuvering area (TMA) serves as a critical transition zone between upper enroute airways and airports, representing one of the most complex regions for managing high volumes of arrival and departure traffic.
Chaoyu Xia   +5 more
doaj   +1 more source

Flux‐Regulated Crystallization of Perovskites Using Machine Learning‐Predicted Solvent Evaporation Rates for X‐Ray Detectors

open access: yesAdvanced Functional Materials, EarlyView.
By integrating machine learning into flux‐regulated crystallization (FRC), accurate prediction of solvent evaporation rates in real time, improving crystallization control and reducing crystal growth variability by over threefold, is achieved. This enhances the reproducibility and quality of perovskite single crystals, leading to reproducible ...
Tatiane Pretto   +8 more
wiley   +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

History of the tether concept and tether missions: a review [PDF]

open access: yes, 2013
This paper introduces history of space tethers, including tether concepts and tether missions, and attempts to provide a source of references for historical understanding of space tethers.
Chen, Yi   +4 more
core   +3 more sources

Scrum4DO178C: An Agile Process to Enhance Aerospace Software Development for DO-178C Compliance—A Case Study at Criticality Level A

open access: yesIEEE Access
The development of safety-critical systems is heavily governed by domain-specific standards. In the aerospace industry, the DO-178C—Software Considerations in Airborne Systems and Equipment Certification—serves as the primary certification ...
J. Eduardo Ferreira Ribeiro   +2 more
doaj   +1 more source

Unveiling Phonon Contributions to Thermal Conductivity and the Applicability of the Wiedemann—Franz Law in Ruthenium and Tungsten Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
Thermal transport in Ru and W thin films is studied using steady‐state thermoreflectance, ultrafast pump–probe spectroscopy, infrared‐visible spectroscopy, and computations. Significant Lorenz number deviations reveal strong phonon contributions, reaching 45% in Ru and 62% in W.
Md. Rafiqul Islam   +14 more
wiley   +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

Reservoir Neural Network Computing for Time Series Forecasting in Aerospace: Potential Applications to Predictive Maintenance

open access: yesEngineering Proceedings
Coupling a reservoir neural network and a Grey Wolf optimization algorithm the system hyperparameters space is explored to find the configuration best suited to forecast the input sensor from the NASA CMAPSS dataset.
Juan Manuel Rodríguez Riesgo   +1 more
doaj   +1 more source

Manufacturing Challenges of a Modular Transverse Flux Alternator for Aerospace

open access: yesEnergies, 2020
This paper presents the manufacturing challenges of a transverse flux alternator for an aerospace application. For fault tolerance, four independent isolated phases are required to deliver a specific power at low speeds, whilst at over speed, there is a ...
Mehmet C. Kulan   +2 more
doaj   +1 more source

Rapid Sintering of Porous Organic Polymer Powders Into Mechanically Strong Monoliths for Efficient CO2 Capture

open access: yesAdvanced Functional Materials, EarlyView.
Spark plasma sintering enables rapid processing of porous organic polymer (POP) from fine powders to a freestanding and mechanically robust monolith. The sintering process retains the CO2 adsorption capacity and CO2/N2 selectivity, making the monolith more suitable as a solid sorbent for practical carbon capture applications.
Duan Li   +4 more
wiley   +1 more source

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