Results 21 to 30 of about 247,344 (269)

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

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

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

Evaluating the Rationale for Folding Wing Tips Comparing the Exergy and Breguet Approaches [PDF]

open access: yes, 2017
The design and development processes for future aircraft aims to address the environmental and efficiency challenges needed to facilitate the engineering of concepts that are far more integrated and require a multidisciplinary approach.
Hayes, D.   +2 more
core   +1 more source

Evaluation of the Earth Systems Research Laboratory's global Observing System Simulation Experiment system [PDF]

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2013
An Observing System Simulation Experiment (OSSE) system has been implemented at the National Oceanographic and Atmospheric Administration Earth Systems Research Laboratory in the US as part of an international Joint OSSE effort.
Nikki C. Privé   +5 more
doaj   +1 more source

Needs assessment of gossamer structures in communications platform end-of-life disposal [PDF]

open access: yes, 2013
The use of a gossamer structure is considered in application to end-of-life disposal of communications platforms. A wide-ranging survey of end-of-life disposal techniques and strategies is presented for comparison against a gossamer structure prior to a ...
Bewick, Charlotte   +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

Experimental Flow Investigation of a Truncated Ideal Contour Nozzle [PDF]

open access: yes, 2006
Various tests showed a significant side load peak for low nozzle pressure ratios during engine start-up and shut down phase. DLR Lampoldshausen carried out tests to examine the flow field in a truncated ideal contour nozzle for low NPR.
Stark, Ralf, Wagner, Bernd
core   +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

Home - About - Disclaimer - Privacy