Mechanics and Physics of Precise Vacuum Mechanisms

Abstract

Aims and Scope of the SeriesThe purpose of this series is to focus on subjects in which fluid mechanics plays a fundamental role.As well as the more traditional applications of aeronautics, hydraulics, heat and mass transfer etc., books will be published dealing with topics which are currently in a state of rapid development, such as turbulence, suspensions and multiphase fluids, super and hypersonic flows and numerical modeling techniques.It is a widely held view that it is the interdisciplinary subjects that will receive intense scientific attention, bringing them to the forefront of technological advancement. Fluids have the ability to transport matter and its properties as well as to transmit force, therefore fluid mechanics is a subject that is particularly open to cross fertilization with other sciences and disciplines of engineering. The subject of fluid mechanics will be highly relevant in domains such as chemical, metallurgical, biological and ecological engineering. This series is particularly open to such new multidisciplinary domains.The median level of presentation is the first year graduate student. Some texts are monographs defining the current state of a field; others are accessible to final year undergraduates; but essentially the emphasis is on readability and clarity.For other titles published in this series, go to www.springer.com/series/5980

Solid lubricant mass contact transfer technology usage for vacuum ball bearings longevity increasing

“…From the before published materials [3] we know that appearance of signs of cohesive friction is an index catastrophic wear not only the outgassing rate increases at that but also composition gassed changes with appearance of hydrogen from near surface zones of the particles pulled out at cohesive cooperation. Megascopic outgassing rate during work of ball-bearing of covered MoS in a vacuum as compared to the coverage of Pb (lead), inflicted CMT is explained a method by the change of physical nature of dominant physical factor at a friction.…”

Ultrahigh vacuum system for advanced tribology studies: Design principles and applications

“…Sliding seal is usually inacceptable in UHV because of high gas leak rate. Therefore, a range of all-metal rotary-motion drives with and without reduction which can sustain outgassing baking has been developed for different specific requirements [47]: high load, increased position accuracy, etc. However, these drives have large number of various tribological contacts including rolling bearings, harmonic gears, planetary gears, etc.…”

“…1. Detail analysis of all relationships and conditions set by each of the subsystems is out of the scope of this work and can be consulted elsewhere [47]. Some relevant specific problems between the subsystems are discussed below.…”

“…Optimal solution of the septilemma can be found using the multi-objective or Pareto optimization method [47]. This method consists in step-wise optimization of the design parameters considering sequentially each specific objective and associated set of constrictions and limitations.…”

On-Orbit Robotic Grasping of a Spent Rocket Stage: Grasp Stability Analysis and Experimental Results

“…The pads have a radius of r f 0.01m, a value close to typical gripper fingerpad dimensions. The friction coefficient of the contact between finger pads and bell surface was set to μ 1.6, to resemble an aluminium-to-aluminium dry contact in vacuum [Deulin et al (2010)]. Aluminium is a widely used material in space applications, although in reality the coefficient would be affected by other parameters such as temperature, propellant residue after burning ea.…”