Results 11 to 20 of about 42,193 (264)

Influence of Pre-Radiation and Photo-Bleaching on the Yb-Doped Fiber Laser Radiated with Gamma-ray

open access: yesApplied Sciences, 2023
To improve the radiation resistance of Yb-doped fiber lasers, we investigate the influence of pre-radiation and photo-bleaching on the gamma-radiated laser’s performance. When the gamma radiation dose is within 10 krad(Si) with a radiation dose rate less
Xuefeng Wang   +6 more
doaj   +1 more source

Execution time analysis and optimisation techniques in the model-based development of a flight control software

open access: yesIET Cyber-Physical Systems, 2017
This case study analyses the possibilities to improve the execution time of model-based developed software by applying optimisations during code generation and compilation.
Kajetan Nürnberger   +2 more
doaj   +1 more source

Method to Characterize Potential UAS Encounters Using Open Source Data

open access: yesAerospace, 2020
As unmanned aerial systems (UASs) increasingly integrate into the US national airspace system, there is an increasing need to characterize how commercial and recreational UASs may encounter each other.
Andrew Weinert
doaj   +1 more source

Onboard Distributed Trajectory Planning through Intelligent Search for Multi-UAV Cooperative Flight

open access: yesDrones, 2022
Trajectory planning and obstacle avoidance play essential roles in the cooperative flight of multiple unmanned aerial vehicles (UAVs). In this paper, a unified framework for onboard distributed trajectory planning is proposed, which takes full advantage ...
Kunfeng Lu   +3 more
doaj   +1 more source

Optimisation and Control of Aerospace Vehicles

open access: yes, 2023
Convex optimisation is concerned with reformulating nonlinear optimisation problems into convex programs which are computationally tractable and whose solution is globally optimal. When leveraged in single-shot optimisation or multi-stage optimisation problems such as model predictive control, convex programs can accelerate computation tremendously ...
Doff-Sotta, Martin, Bacic, Marko
openaire   +2 more sources

Geometric optimal control and applications to aerospace

open access: yesPacific Journal of Mathematics for Industry, 2017
67 pages, 27 ...
Zhu, Jiamin   +2 more
openaire   +4 more sources

Comparative Study of Lifting Surface and CFD Methods in the Simulation of Morphing Process of Folding Wing

open access: yesInternational Journal of Aerospace Engineering, 2022
A folding wing aircraft can autonomously change its configuration in flight to respond to different flying environments. Hinge moment during morphing process is an important basis for driving mechanism design and structural strength check, and its ...
Hao Xu   +4 more
doaj   +1 more source

Vibration Suppression for Flexible Plate with Tunable Magnetically Controlled Joint Stiffness/Damping

open access: yesApplied Sciences, 2022
Large flexible solar panels have the properties of light weight, low stiffness, and weak damping, which leads to low-frequency and large-amplitude vibrations.
Wei Hu   +4 more
doaj   +1 more source

COMPUTER VISION IN THE TELEOPERATION OF THE YUTU-2 ROVER [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
On January 3, 2019, the Chang'e-4 (CE-4) probe successfully landed in the Von Kármán crater inside the South Pole-Aitken (SPA) basin. With the support of a relay communication satellite "Queqiao" launched in 2018 and located at the Earth-Moon L2 ...
J. Wang   +22 more
doaj   +1 more source

Low-cost RF 802.11g telemetry for flight guidance system development

open access: yesThe Journal of Engineering, 2019
This work investigates the potential for off-the-shelf hardware to be used as a very low-cost replacement to the expensive missile test telemetry currently used by military equipment suppliers to develop flight guidance systems.
Philip A. Catherwood   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy