Results 11 to 20 of about 148,333 (263)

Aircraft Propeller Design through Constrained Aero-Structural Particle Swarm Optimization

open access: yesAerospace, 2022
An aero-structural algorithm to reduce the energy consumption of a propeller-driven aircraft is developed through a propeller design method coupled with a Particle Swarm Optimization (PSO).
José D. Hoyos   +4 more
doaj   +1 more source

A Survey of Precision Formation Relative State Measurement Technology for Distributed Spacecraft

open access: yesAerospace, 2022
High-precision relative-state measurement technology is one of the key technologies for achieving the precision formation flying of distributed spacecraft.
Zhang Zhang   +5 more
doaj   +1 more source

Mission-Oriented 3D Path Planning for High-Altitude Long-Endurance Solar-Powered UAVs With Optimal Energy Management

open access: yesIEEE Access, 2020
The conversion efficiency of solar energy and the capacity of energy storage batteries are the key technologies limiting the development of solar-powered aircraft. In this paper, a mission-oriented design for the 3-dimensional (3D) path planning of solar-
Xiangyu Wang   +4 more
doaj   +1 more source

Design of High Temperature Ti–Al–Cr–V Alloys for Maximum Thermodynamic Stability Using Self-Organizing Maps

open access: yesMetals, 2019
Data generated for the Ti−Al−Cr−V system of metallic alloys from our previous publication, where the composition of 102 alloys were computationally Pareto optimized with the objective of simultaneously maximizing the Young’s ...
Rajesh Jha, George S. Dulikravich
doaj   +1 more source

Preliminary Sizing of the Electrical Motor and Housing of Electromechanical Actuators Applied on the Primary Flight Control System of Unmanned Helicopters

open access: yesAerospace, 2022
Helicopter dronization is expanding, for example, the VSR700 project. This leads to the integration of electromechanical actuators (EMAs) into the primary flight control system (PFCS).
Jeremy Roussel   +2 more
doaj   +1 more source

Riemannian optimization and multidisciplinary design optimization [PDF]

open access: yesOptimization and Engineering, 2016
Riemannian Optimization (RO) generalizes standard optimization methods from Euclidean spaces to Riemannian manifolds. Multidisciplinary Design Optimization (MDO) problems exist on Riemannian manifolds, and with the differential geometry framework which we have previously developed, we can now apply RO techniques to MDO.
Bakker, Craig, Parks, Geoffrey T
openaire   +3 more sources

Design Optimization of a Multi-Megawatt Wind Turbine Blade with the NPU-MWA Airfoil Family

open access: yesEnergies, 2019
A new airfoil family, called NPU-MWA (Northwestern Polytechnical University Multi-megawatt Wind-turbine A-series) airfoils, was designed to improve both aerodynamic and structural performance, with the outboard airfoils being designed at high design lift
Jianhua Xu   +3 more
doaj   +1 more source

Optimal Design of Electrically Fed Hybrid Mars Ascent Vehicle

open access: yesAerospace, 2021
The optimal design of the propulsion system for a potential Mars Ascent Vehicle is analyzed, in the context of the Mars Sample Return Mission. The Mars Ascent Vehicle has to perform an initial ascent phase from the surface and then circularize into a 170
Lorenzo Casalino   +2 more
doaj   +1 more source

Multidisciplinary Optimization in Decentralized Reinforcement Learning [PDF]

open access: yes2017 16th IEEE International Conference on Machine Learning and Applications (ICMLA), 2017
Multidisciplinary Optimization (MDO) is one of the most popular techniques in aerospace engineering, where the system is complex and includes the knowledge from multiple fields. However, according to the best of our knowledge, MDO has not been widely applied in decentralized reinforcement learning (RL) due to the ‘unknown’ nature of the RL problems. In
Thanh Nguyen 0005, Snehasis Mukhopadhyay
openaire   +1 more source

Multidisciplinary Design Optimization of UAV Airframes [PDF]

open access: yes47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference<BR> 14th AIAA/ASME/AHS Adaptive Structures Conference<BR> 7th, 2006
If one considers the problem of converting an aircraft mission profile into an airframe design from an optimization theory perspective, it becomes obvious that the search problem comes with all the trimmings. The design space is large and multidimensional, there are multiple and often highly multimodal objectives and constraints, these depending not ...
Sobester, A., Keane, A.J.
openaire   +1 more source

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