Results 101 to 110 of about 54,745 (356)
Optimal Control Approach to Soft Landing [PDF]
فناوری در مهندسی هوافضا, 2017 First, the history of space explorations is reviewed briefly in this paper alongside with current successful and future missions in this field. Then,missions with landing on celestial bodies, especiallyMoon and Mars landings, and their technical problems
Seyyed Hamed Hashemi Mahneh
doaj
The size‐frequency and areal distribution of rock clasts at the Spirit landing site, Gusev Crater, Mars [PDF]
, 2005 J. G. Ward, R. E. Arvidson, M. Golombek
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Backup strategies for Mars landing
, 2020 Entry, descent and landing (EDL) is probably the most difficult and risky phase of a human mission to Mars. It is in general acknowledged that once the vehicle enters the atmosphere, there is no abort to orbit option, the vehicle must land on the surface.
Salotti, Jean-Marc, Doche, Julien
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Advanced Science, EarlyView.Thrombotic ischemic stroke is a severe neurological disease of the brain that presents major challenges for effective diagnosis and treatment. Precisely engineered Ir and Mn cores within a single porphyrin framework of 4IrMn nanoparticles enable endogenous ONOO−‐ or laser‐activated switching among NIR‐CL imaging, photothermal / photodynamic therapy ...
Ziwei Wang +10 more
wiley +1 more source
Proceedings of the 2nd Annual Conference on NASA/University Advanced Space Design Program [PDF]
Topics discussed include: lunar transportation system, Mars rover, lunar fiberglass production, geosynchronous space stations, regenerative system for growing plants, lunar mining devices, lunar oxygen transporation system, mobile remote manipulator ...
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Advanced Science, EarlyView.Electrospinning a composite of PVDF, HfO2, and nano‐Cu transforms the discrete precursors into a continuous nanofiber mesh, forming a multi‐interface heterostructure with embedded nanoparticles. The presence of HfO2 and nano‐Cu at the fiber interfaces induces a highly aligned β‐phase, which enhances piezoelectric crystallinity and improves the material'
Jiawei Gu +9 more
wiley +1 more source
MARSWRF Prediction of Entry Descent Landing Profiles: Applications to Mars Exploration
Earth and Space Science, 2019 In this paper we use the Mars implementation of the Planet Weather Research and Forecasting model, MarsWRF, to simulate the Entry, Descent and Landing (EDL) vertical profiles from six past missions: Pathfinder, Mars Exploration Rovers Opportunity and ...
Ricardo Morais Fonseca +2 more
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Planning, evaluation, and analytical studies in planetary quarantine and spacecraft sterilization Quarterly progress report [PDF]
Planetary quarantine flight regulations and information system, microbe release probability, heat sterilization cycles, organic synthesis and contamination factors, Mars landing ...
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Robust Mars Atmospheric Entry Integrated Navigation based on Parameter Sensitivity
, 2015 This paper presented a robust integrated navigation algorithm based on a special robust desensitized extended Kalman filtering with analytical gain (ADEKF) during the Mars atmospheric entry.
Lou, Taishan, Zhao, Liangyu
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Rocks and aeolian features in the Mars Pathfinder landing site region: Viking infrared thermal mapper observations [PDF]
, 1997 K. S. Edgett, P. R. Christensen
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