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Rapid Prototyping at Zero Gravity for In-Flight Repairs and Fabrication on Space Station Freedom
The ability to perform in-flight rapid prototyping would be of great benefit to NASA in two ways.
First, repair parts could be fabricated from CAD designs beamed up from earth based laboratories which
might allow a failed experiment to proceed. The mission specialists themselves, under the creative
influence of space flight, might design a new part or tool and fabricate it on board in a matter of hours.
Second, with metal casting and ceramic sintering facilities on board, rapid prototyping would allow
manufacturing in space. This paper presents some test criteria for evaluating two of the rapid prototyping
techniques, stereolithography and fused deposition, in microgravity conditions. Effects of the variation
of head speed and strip width for the fused deposition process on the resulting mechanical properties are
presented. The mechanical strength of the polyamide test bars increased with both increasing head speed
and strip width. Increasing head speed would be desirable in microgravity applications.Mechanical Engineerin
The relation of dissolved oxygen to the stability of sewage
Thesis (M.S.)--University of Illinois, 1914.Typescript.Includes bibliographical references
The relation of the mineral content of boiler waters to that of the scale formed
Thesis (B.S.)--University of Illinois, 1912.Typescript
Selected Works of Richard Burchard: A Resource Guide
This document serves as a resource guide for selected choral works of Richard Burchard, including pertinent background information and biographical details about the composer’s life, information concerning the compositional style and musical structure of his choral works, and accessibility and interpretive considerations for the choral conductor. Works were selected for this study chronologically by publication date, from Burchard’s first published work (Miserere mei, published 2009) through the beginning of this project in early 2012. Born in 1960, Richard Burchard is the Chair of the Music Department at Bellarmine University in Kentucky. Burchrd has written over 50 pieces, many of which remain unpublished. However, his first nine published works have been given premieres at prestigious events such as the American Choral Directors Association National Convention, the National Collegiate Choral Organization National Convention, the California Chapter of the American Choral Directors Association All State Choir Festival, and the American Choral Directors Association Western Division Convention. The premieres of these choral works at these important professional gatherings attest to the growing popularity of his work and the importance of Burchard as a significant new composer in choral composition. Continued acclaim and notoriety suggests the need for scholarly and musical study devoted to Burchard’s choral music
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