Future planetary explorations will require surface traverses of unprecedented frequency, length, and duration. As a result, there is need for exploration support tools to maximize productivity, scientific return, and safety. The Massachusetts Institute of Technology is currently developing such a system, called the Surface Exploration Traverse Analysis and Navigation Tool (SEXTANT). The goal of...

An investigation is made into the effects of water jet pressure, nozzle diameter, traverse speed of the nozzle over the rock surface and the number of times the jet passes over the same area on the penetration of a water jet into Indiana limestone. The effectiveness of the cut is judged on the depth of cut established and the specific energy of rock removal. Pressure is varied in the range from...

plicated processes on the wheel surf ace along the wheel width. In order to make these processes clear, the experimental analysis of traverse grinding was conducted by widely changing the speed ratio, Kv, the setting depth of wheel, ‡TMT, and the number of total steps, m, (the ratio of the wheel width over the traverse feed per one revolution of the workpiece). The following results were obtain...

The remarkable deformability of red blood cells (RBCs) depends on the viscoelasticity plasma membrane and cell contents surface area to volume (SA:V) ratio; however, it remains unclear which these factors is key determinant for passage through small capillaries. We used a microfluidic device examine traversal normal, stiffened, swollen, parasitised immature RBCs1. show that dramatic stiffening ...

The widespread application of thermoplastic polymers in different aspects of industries has motivated researchers and companies to improve and upgrade their forming, joining and assembling processes to overcome their limitations. One of the newest joining methods of thermoplastics is friction stir welding which is based on frictional heat generated through contact between a rotating tool and th...