ABSTRACT
Payload G–093, also known as the VOrtex Ring Transit EXperiment (VORTEX), was flown on Shuttle missions STS–89 in January 1998 and again on STS–88 in December 1998. VORTEX was flown to answer some basic questions about fluid atomization—the process whereby a liquid is converted into small droplets. VORTEX investigated the propagation of a vortex ring through a liquid–gas interface in microgravity. The primary data returned from the VORTEX payload are images of this process. The VORTEX experimental sequences were commanded by an experiment controller and data acquisition system. During the entire experimental sequence, the computer collected, interpreted, and stored sensor data. The VORTEX camera captured images of the fluid motion and the droplet formation process. A total of 100 experiments were performed, each collecting a sequence of 40 images. These images have been successfully retrieved from the on-board computer and are currently undergoing analysis. This paper discusses aspects of the VORTEX experiment sequence, the experiment controller and data acquisition system, and the imaging system. We also discuss our successes and concerns with utilizing commercial off-the-shelf components.To download (in .pdf format) this paper click here
ABSTRACT
Get Away Special payload G–093 was designed and built by the University of Michigan Students for the Exploration and Development of Space. Also known as the VOrtex Ring Transit EXperiment (VORTEX), G–093 was flown on Shuttle mission STS–89 in January 1998 and again on STS–88 in December 1998. VORTEX was flown to answer some basic questions about fluid atomization—the process whereby a liquid is converted into small droplets. More specifically, VORTEX investigated the propagation of a vortex ring through a liquid–gas interface in microgravity. The scientific objective of the experiment was to conduct observations of the liquid drop-formation process in the case of surface-tension-dominated interface dynamics. The data returned should lead to better methods for atomizing fuel, producing metal powders of desired characteristics, aerosol generators for drug delivery, and inkjet printer technology. In addition to the important physics questions to be answered, the students learned how to work with industry, academia, and government. The students handled all project management, fund-raising, and technical aspects under the guidance of a Faculty Advisor who acted as the payload customer and NASA contact person. This paper discusses several aspects of the VORTEX project, including project timeline, how the payload was designed and constructed, and the project’s educational impact. To download (in .pdf format) this paper click hereTo download (in .pdf format) the VORTEX Phase III Safety Data Package click here
To download (in .pdf format) the VORTEX Structural Verification Document click here