Results 21 to 30 of about 244,404 (292)

Uniaxial attitude control of uncrewed aerial vehicle with thrust vectoring under model variations by deep reinforcement learning and domain randomization

open access: yesROBOMECH Journal, 2023
The application of neural networks for nonlinear control has been actively studied in the field of aeronautics. Successful techniques have been demonstrated to achieve improved control performance in simulation using deep-reinforcement learning.
Atsushi Osedo   +2 more
doaj   +1 more source

Aeronautics Application of Direct-Detection Doppler Wind Lidar: An Adapted Design Based on a Fringe-Imaging Michelson Interferometer as Spectral Analyzer

open access: yesRemote Sensing, 2022
We report on the development of a novel direct-detection Doppler wind lidar (DD-DWL) within the strong requirements of an aeronautic feed-forward control application for gust load alleviation (GLA).
Patrick Vrancken, Jonas Herbst
doaj   +1 more source

Deflecting small asteroids using laser ablation : Deep space navigation and asteroid orbit control for LightTouch2 Mission [PDF]

open access: yes, 2013
This paper presents a low-cost, low mass, mission design to successfully intercept and deflect a small and faint, 4 m in diameter asteroid. Intended to be launched after 2025, the laser-ablating mission, LightTouch2 will be used to deflect the orbit of ...
Branco, Joao   +4 more
core   +1 more source

Active Flow Control at Low Reynolds Numbers by Periodic Airfoil Morphing [PDF]

open access: yes, 2016
This paper investigates the application of a periodically deforming airfoil surface for the purpose of flow control at low Reynolds numbers. A physical model has been fabricated by bonding Macro Fiber Composite (MFC) actuators to the underside of a NACA ...
Debiasi, M   +3 more
core   +1 more source

DLR Contribution to the First High Lift Prediction Workshop [PDF]

open access: yes, 2011
DLR’s contribution to the first AIAA High Lift Prediction Workshop (HiLiftPW-1) covers computations of all three scheduled test cases for the NASA trapezoidal wing in high lift configuration.
Crippa, Simone   +2 more
core   +1 more source

Preventing the Risks of Inadequate Human-Computer Interaction (HCI) Systems in Manned Spacecraft Missions: Toward an International Public Policy Framework Proposal [PDF]

open access: yesAdvanced Space Law
This scientific research paper analyzes the link between space technology and space law through specifically designed Human-Computer Interaction (HCI) systems applied in manned spacecraft missions, notably by the National Aeronautics and Space ...
Stefani Stojchevska, Sami Mehmeti
doaj   +1 more source

Investigation of the aerodynamic characteristics of a lifting body in ground proximity [PDF]

open access: yes, 2016
The use of cambered hull shapes in the next generation of lighter-than-air vehicles to enhance aerodynamic performance, together with optimized take-off manoeuvre profiles, will require a more detailed understanding of ground proximity effects for such
Garry, Kevin P.   +2 more
core   +1 more source

Refined GEDI Level-2A Database Construction: Focused on Gyeonggi Province, Republic of Korea [PDF]

open access: yesGeo Data
The Global Ecosystem Dynamics Investigation (GEDI), a full-waveform light detection and ranging system, translated the energy into a continuous waveform and recorded the signals chronologically for enabling geometric analysis of the vertical structure of
Kyeong-Hun Cho, Seung-Kuk Lee
doaj   +1 more source

Medium-Scale UAVs: A Practical Control System Considering Aerodynamics Analysis

open access: yesDrones, 2022
Unmanned aerial vehicles (UAVs) have drawn significant attention from researchers over the last decade due to their wide range of possible uses. Carrying massive payloads concurrent with light UAVs has broadened the aeronautics context, which is feasible
Mohammad Sadeq Ale Isaac   +7 more
doaj   +1 more source

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