Results 61 to 70 of about 123,895 (209)

Research of the Tooth Surface Equation and Sliding Characteristic of Internal Cycloid Planetary Transmission with Point Contact

Jixie chuandong, 2015
A new gear pair of cycloidal planetary transmission with point contact is proposed. The equations of tubular meshing tooth surfaces and contact locus of internal cycloidal planetary transmission are derived respectively.
Yi Wencui, Wu Jiatian, Huang Jian
doaj  

A Decrease in Slope Angles on Insolated Martian Slopes: Ground-based Experiments

The Planetary Science Journal
Dry granular flow on Martian slopes can benefit from subsoil Knudsen compressors induced by thermal creep gas flow. The required temperature gradient for this natural compressor can be set by insolation.
Tetyana Bila, Gerhard Wurm
doaj   +1 more source

Radiative transfer in planetary atmospheres [PDF]

A wide range of topics are covered including the following: (1) the observational study of cometary comae via millimeter and radio spectroscopy; (2) observational and theoretical studies of planetary atmospheres at millimeter wavelengths; and (3 ...
Schloerb, F. Peter
core   +1 more source

Geologic History of the Amundsen Crater Region Near the Lunar South Pole: Basis for Future Exploration

The Planetary Science Journal
We provide the first detailed 1:100,000 scale geomorphologic map of the ∼100 km Amundsen crater region, which is of high scientific relevance for future exploration, e.g., NASA’s VIPER mission, the Artemis program, and the Chinese International Lunar ...
Lukas Wueller, Wajiha Iqbal, Thomas Frueh, Carolyn H. van der Bogert, Harald Hiesinger   +4 more
doaj   +1 more source

Lightweight Modular Instrumentation for Planetary Applications [PDF]

An instrumentation, called Space Active Modular Materials ExperimentS (SAMMES), is developed for monitoring the spacecraft environment and for accurately measuring the degradation of space materials in low earth orbit (LEO).
Joshi, P. B.
core   +1 more source

Contact Dynamics Simulation for Space Robotics Applications [PDF]

, 2008
—The subject of this paper are contact dynamics simulation methods for two different examples of space robotics applications: Satellite docking in GEO and rover locomotion on planetary surfaces.
Hirzinger, Gerd, Krenn, Rainer
core  

Studies in Aeolian geology [PDF]

The objective of the research was to assess the significance of aeolian (windblown) processes in the evolution of planetary surfaces. The approach was to use wind tunnel simulations, field studies of possible analogs, and analyses of spacecraft ...
Greeley, Ronald
core   +1 more source

Review on Deep Learning Techniques in Planetary Topographic Modeling [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Topographic modeling using orbital imagery is a cornerstone of planetary photogrammetry and remote sensing, underpinning scientific exploration and analysis. While classical methods like stereo-photogrammetry (SPG) and (stereo)-photoclinometry (SPC) have
H. Chen, J. Oberst, P. Gläser, K. Willner   +3 more
doaj   +1 more source

A photometric function for diffuse reflection by particulate materials [PDF]

A photometric function is proposed to describe the diffuse reflection of radiation by particulate materials. Both multiple scattering and the dominant effects of particle shadowing are included and the function is verified by comparisons with the ...
Meador, W. E., Weaver, W. R.
core   +1 more source

Towards an Autonomous Walking Robot for Planetary Surfaces [PDF]

, 2010
In this paper, recent progress in the development of the DLR Crawler - a six-legged, actively compliant walking robot prototype - is presented. The robot implements a walking layer with a simple tripod and a more complex biologically inspired gait ...
Chilian, Annett, Görner, Martin, Hirschmüller, Heiko   +2 more
core