Results 61 to 70 of about 36,657 (229)

Sketch of an Astronaut

open access: yesThe Iowa Review, 2005
I've wondered how far a man in a spacesuit can go in this little town, shaped for sleepy farmers and teens with buckets of turnips, who throw them off trucks at crowds of children. He has his own source of oxygen, so the smoke of Cuban cigars at the lodge or the gray clouds over the daily book burnings don't tear up his eyes or roll him over into a ...
openaire   +2 more sources

A Three‐Dimensional Fatigue Reliability Model Under Random Loadings

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Random loadings (RL) are prevalent in mechanical systems, yet their inherent stochasticity poses significant challenges to structural fatigue reliability assessment. In this study, a three‐dimensional fatigue reliability model is developed under RL through amplitude modulating and Fourier transformation. The non‐Gaussian RL characteristics are
Song Xue, Pengfei Cui, Wanlin Guo
wiley   +1 more source

Ellipsoid‐Based Interval‐Type Uncertainty Model Updating Based on Riemannian Manifold and Gaussian Process Model

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Modern engineering systems require advanced uncertainty‐aware model updating methods that address parameter correlations beyond conventional interval analysis. This paper proposes a novel framework integrating Riemannian manifold theory with Gaussian Process Regression (GPR) for systems governed by Symmetric Positive‐Definite (SPD) matrix ...
Yanhe Tao   +3 more
wiley   +1 more source

International legal management of environmental protection from the impact of practical astronautics

open access: yesRUDN Journal of Law, 2009
The notion of international environmental management is formulated in the article; basic types of adverse impact of practical astronautics on environment are analyzed with special reference to the combat of pollution of outer-space with space debris.
S A Mohammad
doaj  

Air–sea interaction in medicanes with atmosphere–ocean–wave coupled regional climate simulations

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
The atmosphere–ocean–wave coupling improved storm intensity compared to standalone atmosphere setting, which tended to overestimate wind speeds. The atmosphere–ocean coupling in medicane simulations leads to increased sea surface temperatures, which enhances evaporation and promotes the development of convective systems through increased latent heat ...
Fulden Batibeniz   +3 more
wiley   +1 more source

Safety Considerations in Deployment of Robotic Systems – A Systematic Review

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT An in‐depth understanding of the risks related to robotic systems is crucial to guarantee safety throughout all stages of robot design and operations. This required a thorough risk assessment following international standards. This study presents a systematic review of previous research on safety considerations in the design of robotic systems,
Adedire D. Adesiji   +6 more
wiley   +1 more source

Study of the Thermal and Hydrothermal Aging Effects on the Properties of 3D‐Printed Thermoplastic Polyurethane

open access: yesJournal of Vinyl and Additive Technology, EarlyView.
Effect of post‐aging conditions on mechanical and thermal properties of FDM‐printed parts. ABSTRACT In this study, the thermal and hydrothermal aging of TPU produced with the FDM technique was simulated and subjected to a series of tests. The alterations in the internal structures of the samples that had been subjected to tensile, hardness, adhesive ...
Busra Eyri   +3 more
wiley   +1 more source

A UAV Air Combat Trajectory Prediction Method Based on QCNet

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT The Unmanned Aerial Vehicle (UAV) air combat trajectory prediction algorithm facilitates strategic pre‐planning by predicting UAV flight trajectories with high accuracy, thus mitigating risks and securing advantages in intricate aerial scenarios.
Zhang Jiahui, Meng Zhijun, He Jiazheng
wiley   +1 more source

Educational Methods/Aids Used In The Astronautics Core Course At The United States Air Force Academy [PDF]

open access: green, 2020
Tim White   +4 more
openalex   +1 more source

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