Calculation of 2D profiles for the plasma and electric field in the boundary layer of the TEXTOR-94 Tokamak

An improved version of the 2D multifluid code TECXY is used to study the plasma parameters and the electric field in the boundary layer of the TEXTOR-94 tokamak. An anomalous perpendicular sheer viscosity eta (perpendicular to) is incorporated into the ion momentum balance which allows to fulfil the global (magnetic surface averaged) ambipolarity constraint for the radial electric current, and to determine the electric field in the transition layer by a second-order ordinary differential equation for E-r(r). The code modelling results suggest the existence of a narrow global circulation layer for the poloidal plasma velocity just inside the separatrix which is connected with a negative electric field spike. PI proper choice of eta (perpendicular to) gives better agreement with experimental velocity profiles. (C) 2001 Elsevier Science B.V. All rights reserved

Human Factors In Commercial Human Space Operations

What was unthinkable as little as five years ago now seems to be on the brink of becoming a reality in the foreseeable future - A world in which commercial space travel is as commonplace as commercial aviation travel is today. The scientific research community will play a vital role in achieving this reality while supporting the safety of both passengers and crews. This will require the application of sound human factors theories, principles, and practices to develop effective training programs and countermeasures as well as to design viable habitats on board commercial space vehicles for these new space travelers. Accordingly, the objective of this multidisciplinary discussion panel will be to identify and discuss the human factors issues that warrant investigation to support the safe and efficient advance of commercial human space operations. Copyright 2013 by Human Factors and Ergonomics Society, Inc

Human Factors in Commercial Human Space Operations

What was unthinkable as little as five years ago now seems to be on the brink of becoming a reality in the foreseeable future – a world in which commercial space travel is as commonplace as commercial aviation travel is today. The scientific research community will play a vital role in achieving this reality while supporting the safety of both passengers and crews. This will require the application of sound human factors theories, principles, and practices to develop effective training programs and countermeasures as well as to design viable habitats on board commercial space vehicles for these new space travelers. Accordingly, the objective of this multidisciplinary discussion panel will be to identify and discuss the human factors issues that warrant investigation to support the safe and efficient advance of commercial human space operations