Results 1 to 10 of about 148,333 (263)

Noise prediction research of a scaled turboprop aircraft

open access: yesXibei Gongye Daxue Xuebao, 2021
Aerodynamic noise level has become an important performance index of civil aircraft, and it is drawing more and more attention. Most airframe noise research based on CFD method is aimed at aircraft individual parts at present, while lack of noise ...
Song Minhua   +5 more
doaj   +1 more source

Multidisciplinary Optimization Formulation for the Optimization of Multirate Systems [PDF]

open access: yesIEEE Transactions on Magnetics, 2016
Multidisciplinary optimization strategies are widely used in the static case and can be extended to a problem with a time-domain model in order to reduce optimization time. The waveform relaxation method is a fixed-point approach applied to waveforms, which allows the coupling of dynamic models. Using the individual discipline feasibility strategy, the
Pierquin, Antoine   +2 more
openaire   +4 more sources

Efficient Method for Heat Flux Calculations within Multidisciplinary Analyses of Hypersonic Vehicles

open access: yesAerospace, 2023
A large amount of heat flux from aerodynamic heating acts on reusable spacecraft; thus, an accurate heat flux prediction around spacecraft reentry is essential for developing a high-performance reusable spacecraft.
Jongho Jung, Kwanjung Yee, Shinkyu Jeong
doaj   +1 more source

High-dimensional aerodynamic data modeling using a machine learning method based on a convolutional neural network

open access: yesAdvances in Aerodynamics, 2022
Modeling high-dimensional aerodynamic data presents a significant challenge in aero-loads prediction, aerodynamic shape optimization, flight control, and simulation.
Bo-Wen Zan   +4 more
doaj   +1 more source

Conceptual optimization of remotely piloted amphibious aircraft for wildfire air attack

open access: yesDrone Systems and Applications, 2023
In this study, a methodology for the high-level conceptual design, optimization, and evaluation of amphibious remotely piloted and autonomous fixed-wing aircraft to support wildfire air attack strategies is presented. Of particular interest are questions
Ryan Ward   +3 more
doaj   +1 more source

Emission-Driven Hybrid Rocket Engine Optimization for Small Launchers

open access: yesAerospace, 2022
Hybrid rocket engines are a green alternative to solid rocket motors and may represent a low-cost alternative to kerosene fueled rockets, while granting performance and control features similar to that of typical storable liquid rocket engines.
Lorenzo Casalino   +3 more
doaj   +1 more source

Global Optimization Algorithms in Multidisciplinary Design Optimization [PDF]

open access: yes12th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, 2008
While Multidisciplinay Design Optimization (MDO) literature focuses mainly on the development of different formulations, through the manipulation of design variables, less attention is generally devoted to the combination of specific MDO formulations with existing nonlinear optimization algorithms.
PERI D.   +3 more
openaire   +4 more sources

Discovery of New Ti-Based Alloys Aimed at Avoiding/Minimizing Formation of α” and ω-Phase Using CALPHAD and Artificial Intelligence

open access: yesMetals, 2020
In this work, we studied a Ti-Nb-Zr-Sn system for exploring novel composition and temperatures that will be helpful in maximizing the stability of β phase while minimizing the formation of α” and ω-phase. The Ti-Nb-Zr-Sn system is free of toxic elements.
Rajesh Jha, George S. Dulikravich
doaj   +1 more source

Multidisciplinary optimization for configuration of a reentry capsule considering uncertainty [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2019
The robust multi-disciplinary, multi-objective shape optimization of re-entry capsule with aero-thermodynamic, trajectory, stability and the geometry considerations are presented in this paper.
Hamed Hashemi Mehneh   +1 more
doaj   +1 more source

Hybrid Rocket Engine Design Optimization at Politecnico di Torino: A Review

open access: yesAerospace, 2021
Optimization of Hybrid Rocket Engines at Politecnico di Torino began in the 1990s. A comprehensive review of the related research activities carried out in the last three decades is here presented.
Lorenzo Casalino   +2 more
doaj   +1 more source

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