Fig. 7. Final brace storage and dispensing device. capability of the Orbiter, a separate power supply will be required, unless another less demanding fastening approach is developed. This possibility is presently being explored. Beam Cat-off The first approach attempted to provide beam cut-off once the desired length had been fabricated was a simple single shear device (Figure 14). This proved to be unacceptable, since it produced severe rippling of the beam end away from the cutting edge. (This rippling would impair the installation of a beam end tripod used to attach one beam to another, as well as providing a possible safety hazard to the astroworker assembling the beams or installing equipment on them.) The solution, although it did produce debris, was a double shear mechanism which not only sliced cleanly through the cap but also caught the debris in a self-contained storage box (Figure 15).
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