SpaceX CRS-29 Mission Launch Window Opens November 5
SpaceX CRS-29 Mission Launch Window Opens November 5
Scientific Experiments and Technology Demonstrations Going to ISS
The 29th SpaceX commercial resupply services (CRS) mission for NASA carries scientific experiments and technology demonstrations, including studies of enhanced optical communications and measurement of atmospheric waves. The uncrewed SpaceX Dragon spacecraft is scheduled to launch to the International Space Station from the agency’s Kennedy Space Center in Florida no earlier than Nov. 5.
“Atmospheric gravity waves are one mechanism for transporting energy and momentum within the climate system.”
Jeff Forbes of the University of Colorado Boulder
Among the research launching to the orbiting lab are:
Laser Communication from Space
NASA’s ILLUMA-T investigation tests technology to provide enhanced data communication capabilities on the space station. A terminal mounted on the station’s exterior uses laser or optical communications to send high-resolution information to the agency’s Laser Communications Relay Demonstration (LCRD) system, which is in geosynchronous orbit around Earth. LCRD then beams the data to optical ground stations in Haleakala, Hawaii, and Table Mountain, California. The system uses invisible infrared light and can send and receive information at higher data rates than traditional radio frequency systems, making it possible to send more images and videos to and from the space station in a single transmission. The ILLUMA-T demonstration also paves the way for placing laser communications terminals on spacecraft orbiting the Moon or Mars.
ILLUMA-T and LCRD create NASA’s first two-way laser communications relay system. Laser communications can supplement the radio frequency systems that most space-based missions currently use to send data to and from Earth.
Watching Waves in the Atmosphere
NASA’s Atmospheric Waves Experiment (AWE) uses an infrared imaging instrument to measure the characteristics, distribution, and movement of atmospheric gravity waves (AGWs). These waves roll through Earth’s atmosphere when air is disturbed much like waves created by dropping a stone into water.
“Atmospheric gravity waves are one mechanism for transporting energy and momentum within the climate system and they play a role in defining the climate and its evolution,” says co-investigator Jeff Forbes of the University of Colorado Boulder. He explains that these waves are relatively small at the source but amplified at altitudes, and potentially indicate climate changes not readily observable at lower altitudes. This investigation’s long-term observations of physical processes in atmospheric circulation could increase insight into AGWs and improve understanding of Earth’s atmosphere, weather, and climate.
Space Flight Induced Ovarian and Estrogen Signaling Dysfunction, Adaptation, and Recovery is a fundamental science investigation sponsored by NASA’s Biological and Physical Sciences Division. It advances previous microgravity studies that seek to better understand the combined effects of spaceflight, nutritional, and environmental stresses on control of ovulation and resulting effects on the skeleton. Results of this study could help identify and treat the effects of stress on ovulation and improve bone health on Earth.
Aquamembrane-3, an investigation from ESA (European Space Agency), continues evaluation of replacing the multi-filtration beds used for water recovery on the space station with a type of membrane known as an Aquaporin Inside Membrane (AIM). These are membranes that incorporate proteins found in biological cells, known as aquaporins, to filter water faster while using less energy. Initial testing of AIM technology in 2015 showed that water filtration by membranes is possible in microgravity, and this follow-up testing could demonstrate how effectively the membranes eliminate contaminants in space station wastewater. Results could advance development of a complete and full-scale membrane-based water recovery system, improving water reclamation and reducing the amount of material that needs to be launched to the space station. This water filtration technology also could have applications in extreme environments on Earth, such as military and emergency settings, and for decentralized water systems in remote locations.