Astronaut EVA Exposure Estimates from CAD Model Spacesuit Geometry

Life in extreme environments: how will humans perform on Mars?

This review of astronaut extravehicular activity (EVA) and the details of American and Soviet/Russian spacesuit design focuses on design recommendations to enhance astronaut safety and effectiveness. Innovative spacesuit design is essential, given the challenges of future exploration-class missions in which astronauts will be called upon to perform increasingly complex and physically demanding ...

International Space Station Radiation Shielding Model Development

The projected radiation levels within the International Space Station (ISS) have been criticized by the Aerospace Safety Advisory Panel in their report to the NASA Administrator. Methods for optimal reconfiguration and augmentation of the ISS shielding are now being developed. The initial steps are to develop reconfigurable and realistic radiation shield models of the ISS modules, develop compu...

Manipulating Geometry in a STEP DB from Commercial CAD Systems

It is difficult to access and share design data among heterogeneous CAD systems. Usually different CAD systems exchange design data using a neutral format such as IGES or STEP. A prototype STEP database has been implemented. The prototype system uses the OpenCascade geometric kernel and the commercial object-oriented database ObjectStore. STEP provides the database schema. The STEP database has...

Sindbad : from Cad Model to Synthetic Radiographs

Accessing CAD Geometry for Mesh Generation

One of the major issues of mesh generation today is access to CAD geometry in an accurate and efficient manner. This paper will provide an overview the process of accessing CAD geometry for mesh generation and will review several of the issues associated with accessing CAD geometry for mesh generation. This paper will also evaluate alternative techniques for accessing CAD geometry and review ho...