Results 21 to 30 of about 2,944,878 (288)

Analytical landing trajectories for embedded autonomy [PDF]

open access: yes, 2010
This paper considers an optimal guidance law for the initial braking phase of a soft landing mission on a celestial body without atmosphere in which boundary conditions on height and velocity are specifed. The optimal lander attitude for the minimum fuel
Jing, W.X.   +5 more
core   +4 more sources

Helicopter Landing Sites Identification depending on Slope, Landing Site Dimension and Shape [PDF]

open access: yesAGILE: GIScience Series, 2021
Abstract. The identification of the Helicopter Landing Sites (HLS) needs complex analysis of the terrain considering a lot of aspects. One of the unconditional aspects in this case is the slope of ground, therefore the HLS identification depending on slope, landing site dimension and shape was conducted. This paper describes the development of the tool
Eva Mertova, Martin Bures
openaire   +2 more sources

Decomposition of the β phase at intermediate temperature in β-metastable Ti-5553 alloy [PDF]

open access: yesMATEC Web of Conferences, 2020
The present contribution focuses on the nature of the β → α transformation in Ti-5333 alloy at intermediate temperatures. It is indeed still unclear whether this transformation is only controlled by bulk diffusion or whether interfacial kinetics may play
Goetz Morgan   +5 more
doaj   +1 more source

Reunderstanding Geomorphological Features in Chang'e-5 Sampling Region Based on Multiscale Roughness Model

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Chang'e-5 (CE-5) mission was successful to return samples up to 1.8 kg from the northeastern part of the Rümker region, the Moon. These samples can provide new understandings for the basaltic volcanism of northern Oceanus Procellarum ...
Wei Cao   +6 more
doaj   +1 more source

Leveraging Social Media to Promote Evidence-Based Continuing Medical Education. [PDF]

open access: yesPLoS ONE, 2017
New dissemination methods are needed to engage physicians in evidence-based continuing medical education (CME).To examine the effectiveness of social media in engaging physicians in non-industry-sponsored CME.We tested the effect of different media ...
Simone Flynn   +5 more
doaj   +1 more source

Algorithm for forming the structure of a selling website (by the example of developing landing page with high conversion for tourism business)

open access: yesПутеводитель предпринимателя, 2022
The article is devoted to the compilation of the general structure of the selling site for the implementation of proposals for the expansion of a travel company using landing pages (landing pages).
Ya. G. Usenko
doaj   +1 more source

Study and construction of landing test site for Mars rover

open access: yesYantu gongcheng xuebao, 2023
Mars is far away from the Earth, the communication delay is about 20 minutes, and the surface terrain is complex, which is covered with rock, slope, and other obstacles.
JIANG Mingjing 2, 3, 1, SHI Anning 1, XI Banglu 4, HUANG Wei 5, LÜ Lei 1
doaj   +1 more source

Landing Site Mapping and Lander Localization for Chang’e-5 and Chang’e-6 Lunar Sample Return Missions [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Chang’e-5 and Chang’e-6 are lunar sample return missions in China’s lunar exploration program. In these missions, high-resolution landing site mapping and lander localization were performed to support mission operations and scientific ...
K. Di   +12 more
doaj   +1 more source

The Beagle 2 stereo camera system [PDF]

open access: yes, 2005
The stereo camera system (SCS) was designed to provide wide-angle multi-spectral stereo imaging of the Beagle 2 landing site. Based on the Space-X micro-cameras, the primary objective was to construct a digital elevation model of the area in reach of the
Hofmann, B.   +9 more
core   +1 more source

Lunar Lander Landing Site Decision in Low-Fuel Case

open access: yesMATEC Web of Conferences, 2016
This paper deals with lunar landing site decision algorithms for the case when the lunar lander is not able to reach the original landing site. A new landing site which minimizes the fuel consumption of the lunar rover is determined from landing site ...
Seo Min-Guk   +2 more
doaj   +1 more source

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