Results 41 to 50 of about 38,180 (266)

Soil Test Apparatus for Lunar Surfaces [PDF]

Earth and Space 2010, 2010
We have studied several field geotechnical test instruments for their applicability to lunar soil simulants and analog soils. Their performance was evaluated in a series of tests in lunar simulants JSC-1A, NU-LHT-2M, and CHENOBI each prepared in carefully controlled states of compaction through vibration on a shake table with overburden.
Philip T. Metzger, Laila A. Rahmatian
openaire   +2 more sources

Revealing the Mechanical Characteristics via Kinematic Wave Model for Snake-Like Robot Executing Exploration of Lunar Craters

IEEE Access, 2020
It is extremely difficult to collect deep lunar soil samples during lunar exploration, as the average thickness of lunar soils is very large, and the power of lunar soil sampling systems is inherently limited.
Xuyan Hou, Yuetian Shi, Long Li, Ye Tian, Yilin Su, Tianxiang Ding, Zongquan Deng   +6 more
doaj   +1 more source

Research on the Design and Gait Planning of a Hexapod Robot Based on Improved Triangular Gait for Lunar Exploration

Applied Sciences, 2023
To address the challenges posed by the loose lunar surface structure, including the adhesive nature of lunar soil, strong corrosiveness and the slow walking speed of robots using traditional tripod gaits, this paper proposes the design of a small lunar ...
Ying-Qing Guo, Wen-Hao Luo, Zhao-Dong Xu, Bin-Ming Shu, Dong-Kai Yang   +4 more
doaj   +1 more source

Implementation of a Packed Bed Reactor With Mycological Silver Nanoparticles for Drinking Water Disinfection

CleanMat, EarlyView.
Biogenic silver nanoparticles (AgNPs) were synthesized using Aspergillus niger (IBCLP20) and applied in a packed bed reactor (PBR). This biological approach offers a sustainable alternative to chemical and physical methods. The system was tested against Escherichia coli (IPT245) and Pseudomonas aeruginosa (IPT365) at 1 × 103 CFU·mL−1. Temperature (25°C–
Ana Laura Pires de Oliveira, Stella Daniels Kovacs, Carolina Assis da Silva, Caterina do Valle Trotta, Marta Filipa Simões, Rafael Firmani Perna, Cristiane Angélica Ottoni   +6 more
wiley   +1 more source

A Study Demonstrating That Using Gravitational Offset to Prepare Extraterrestrial Mobility Missions Is Misleading

Journal of Field Robotics, EarlyView.
ABSTRACT Recently, there has been a surge of international interest in extraterrestrial exploration targeting the Moon, Mars, the moons of Mars, and various asteroids. This contribution discusses how current state‐of‐the‐art Earth‐based testing for designing rovers and landers for these missions currently leads to overly optimistic conclusions about ...
Wei Hu, Pei Li, Arno Rogg, Alexander Schepelmann, Samuel Chandler, Ken Kamrin, Dan Negrut   +6 more
wiley   +1 more source

The Effect of Tip Design on Technological Performance During the Exploration of Earth, Lunar, and Martian Soil Environments

Journal of Field Robotics, EarlyView.
ABSTRACT This paper investigates the penetration performance of soil‐burrowing probes with different tip designs during shallow‐depth penetration in various media, including terrestrial soils (Hostun sand) and well‐characterized planetary soil simulants (LHS‐1 Lunar regolith simulant and MGS‐1 Martian regolith simulant).
Serena Rosa Maria Pirrone, Emanuela Del Dottore, Gunter Just, Barbara Mazzolai, Luc Sibille   +4 more
wiley   +1 more source

Development and characterization of a regional lunar soil simulant for emirates lunar missions

International Journal of Mining Science and Technology
Lunar soil simulants (LSS) have been pivotal in the success of past and current lunar missions. They have enhanced the design of lander and rover wheels through interaction studies on the lunar testbed under simulated environmental conditions.
Bo Peng, Prabu Thannasi, Waleed El-Sekelly, Tarek Abdoun, Kemal Celik   +4 more
doaj   +1 more source

Hydropower Effluent as a Marine Pollutant; Impacts of River Regulation on Estuarine and Coastal Ecology

River Research and Applications, EarlyView.
ABSTRACT The confluence of rivers with the ocean creates biological hotspots where temperature, salinity, and nutrients mix to provide excellent conditions for rearing, growth, and refuge to a multitude of organisms. Worldwide, estuaries are highly productive and biodiverse.
Robert J. Lennox, Jan Grimsrud Davidsen, Sindre H. Eldøy, Bronwyn M. Gillanders, Ulrich Pulg, Kirstine Thiemer, William M. Twardek, Ava J. A. Sergio, Øystein Varpe, Gaute Velle, Knut Wiik Vollset   +10 more
wiley   +1 more source

Study on the performance mechanism of alumina-alkali activator synergistic solidified lunar soil simulant

Case Studies in Construction Materials
The utilization of lunar in-situ resources is an important way to realize the construction and operation of Moon scientific research base. The effect of alumina-alkali activator on the mechanical properties of solidified lunar soil simulant was studied ...
Qinyong Ma, Bobo Zhang
doaj   +1 more source

Measurement and Uncertainty Analysis of Lunar Soil Water Content via Heating Flux Method

Aerospace, 2023
According to the big impact hypothesis, the moon should be very dry. However, more and more evidence from the remote sensing of the moon in recent years indicates that there is a lot of water in the moon’s polar regions.
Ziheng Liu, Huaiyu He, Jiannan Li, Jialong Hao, Junyue Tang, Zhiheng Zhang, Shengyuan Jiang, Guanxin Chi, Ranran Liu, Lei Wang, Hao Geng, Changbin Xue   +11 more
doaj   +1 more source