The tapping will continue until the surface either breaks up or consistently returns to a particular configuration. For the wedge vessel, after filling is complete, the wedge adjustment knob is turned to decrease the wedge angle. This angle is recorded on video. The wedge angle adjustment procedure is then reversed and repeated. Approximately 50 min are required for each vessel when tested independently.
Less time is necessary when the tests are carried out sequentially.
The principal data for this experiment are the video recordings. Measurements made of the interface configurations and wedge angles from the video tapes are used to compare theory and numerical predictions. The Glovebox is a multiuser facility developed for experiments to be conducted on Spacelab or in the Shuttle middeck. The Glovebox provides an ergonomically sound workarea that allows a payload specialist to carry out operations using small quantities of toxic, irritating, or potentially infective materials that must be prevented from contaminating the spacecraft atmosphere. In addition, the workstation must be capable of containing powders, splinters, liquids, or bioparticles that could accidentally or purposefully result from such operations.