Objective. This article explores the many factors that have been involved in International Space Station (ISS) on-orbit utilization activities, and the approaches that the National Aeronautics and Space Administration is taking to evaluate, communicate, and maximize the value of these activities. Methods. A review of the initiatives, stakeholders, vehicle assembly, science and technology outcomes, and benefits to Earth and space exploration illustrates the evolving nature of this unique microgravity research platform. Results. The ISS partnership works together to implement many strategic approaches to maximizing the ISS platform so that the full potential of this laboratory is realized.

A three-dimensional, viscous computer code was used to calculate the mixing downstream of a typical turbofan mixer geometry, Experimental data were obtained using pressure and temperature rakes at the lobe and nozzle exit stations. Secondary flow vet-1.ociticc were also obtained. These data wrre used to validate the computer results. An assessment was W also made to determine the relative importance of turbulence in the mixing phenomenon as compared with the streamwise vorticity setup by the secondary flows. The observations suggest that the generation of streamwise vorticity appears to play a significant role in determining the temperature distribution at the nozzle exit plane.

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