ISS SPHERES Fluid Slosh main objective is to gather long duration, low gravity slosh data in order to calibrate Computation Fluid Dynamics (CFD) models of low gravity coupled fluid-vehicle behavior.
The project is set to be completed in two main phases. First is a proof of concept concerning the utilization of SPHERES on the International Space Station. The second phase involves the design, manufacture, launching, and testing of externally mounted fluid tanks to the SPHERES assembly which are sized and instrumented to provide high quality representative data on scaled upper stage tank configurations.
The experimental data is to be produced using video and inertial measurements of high mass fraction, low gravity slosh events taken across a sizeable test suite. The results provided should be a valuable resource in providing the first-ever long-term fluid slosh data at micro-gravity levels that can be used for benchmarking and anchoring of mathematical fluid slosh models of any form.
STMD Fluid Slosh experiment begins on the International Space Station
Principal Technologist: Ryan Stephan (firstname.lastname@example.org)
Project Manager: Paul Schallhorn (email@example.com)
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Overview of Key Subsystems
Boeing Delta IV Launch Vehicle – Pulse Settling Approach for Second Stage Hydrogen Propellant Management”, Acta Astronautica Volume 61, June-August 2007
The objective of the SLOSH experiment is to advance the understanding of low-gravity fluid behavior in order to reduce mission risk and uncertainty levels.
Dedicated Slosh Dynamics Experiment
This is a preview of the first SPHERES/Slosh ground test at Florida Tech using a surrogate tank at 20% water fill level. This ground test is demonstrating how we can simulate the multi-degree-of-freedom maneuvers that will be performed on ISS and ensure that all of our instrumentation (cameras and IMUs) are working properly and the data is captured using a VERTIGO clone computer. The speed of the tank in this video is much, much faster than what will occur on ISS, but it makes for a better video to share.