NTRS - NASA Technical Reports Server

Back to Results
Spaceflight Holography Investigation in a Virtual ApparatusThe movement of a particle in a fluid is one of the most fundamental processes in physics and plays an important role in materials science. For example, the physics of crystal growth from a nucleation site in solution can be dominated by movement of the solution over the crystal surface. Gravity usually dominates the equations of motion, but in microgravity other terms can dominate, making the equation much more complex. Until recently, the equations were solved only by numerical methods and/or by neglecting terms. During this study, we discovered an exact solution to the equations, which shows that the usually neglected terms become extremely important in microgravity. We also developed diagnostic recording methods using holography to save all of the particle field data, allowing the experiment to essentially be transferred from space back to earth in what we call the virtual apparatus . We will record holograms of particle distributions in motion in microgravity and bring them back to earth for analysis, allowing the study of the full three-dimensional motion of sets of particles, allowing us to test the new analytical solutions. The experiment will also provide accurate measurements of the quasi-steady acceleration of the space platform and other interesting microgravity and g-jitter effects. This program will produce the flight definition for an experiment in the microgravity environment of space to validate the theoretical model. We will design an experiment with the help of the theoretical model that is optimized for testing the model, measuring g, g-jitter, and other microgravity phenomena.
Document ID
Document Type
Date Acquired
August 21, 2013
Publication Date
December 1, 2003
Publication Information
Publication: Biological and Physical Space Research Laboratory 2002 Science Review
Subject Category
Fluid Mechanics and Thermodynamics
Distribution Limits
Work of the US Gov. Public Use Permitted.

Related Records

IDRelationTitle20040073490Analytic PrimaryBiological and Physical Space Research Laboratory 2002 Science Review