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This paper describes the techniques and physical parameters used to producestable centimetric water drops in microgravity, and to study single cavitationbubbles inside such drops (Parabolic Flight Campaigns, European Space AgencyESA). While the main scientific results have been presented in a previouspaper, we shall herein provide the necessary technical background, withpotential applications to other experiments. First, we present an originalmethod to produce and capture large stable drops in microgravity. Thistechnique succeeded in generating quasi-spherical water drops with volumes upto 8 ml, despite the residual g-jitter. We find that the equilibrium of thedrops is essentially dictated by the ratio between the drop volume and thecontact surface used to capture the drop, and formulate a simple stabilitycriterion. In a second part, we present a setup for creating and studyingsingle cavitation bubbles inside those drops. In addition, we analyze theinfluence of the bubble size and position on the drop behaviour after collapse,i.e. jets and surface perturbations.

Techniques for Generating Centimetric Drops in Microgravity and Application to Cavitation Studies