Session
Poster Session 3
Location
Salt Palace Convention Center, Salt Lake City, UT
Abstract
Exposure to space weather in the Low Earth Orbit (LEO) space weather environment poses significant challenges to both the integrity and longevity of orbital hardware, as well as the health of astronauts, driving the necessity for improved means of radiation shielding for future manned and unmanned missions. With a 1U CubeSat formfactor, ROSISat is a planned LEO mission that aims to characterize the radiation shielding capabilities of seven candidate materials. By comparing the shielding performance of each composite and constituent material, ROSISat will place a specific focus on correlating how molecular structure influences radiation shielding. Further, current simulations lack the fidelity to account for differences in molecular structure when analyzing shielding properties, thus emphasizing the necessity of in-situ testing. With one paired with each cell, nine SRAM computer memory modules will be embedded beneath the 3x3 aluminum material attachment plate, while onboard microcontrollers will monitor and quantify the bitflips occurring with each material. This will allow the radiation dose rate received by each module to be assessed for material comparison, providing greater understanding of how molecular structure influences the shielding capabilities of composite materials. The general space environment for various LEO orbits is being modeled using the Ansys STK software. Testing initiatives, including a future high-altitude balloon flight, will be conducted to verify subsystem designs and functionality. The ROSISat mission is projected to be flight-ready by 2028, with direct implications for future Earth-orbiting missions, including advancing the strength and reliability of shielding for EVA suits, manned craft, and long-term habitats.
Document Type
Event
Included in
Systems Progress Overview of ROSISat: The Radiation Orbital Shielding Investigation Satellite
Salt Palace Convention Center, Salt Lake City, UT
Exposure to space weather in the Low Earth Orbit (LEO) space weather environment poses significant challenges to both the integrity and longevity of orbital hardware, as well as the health of astronauts, driving the necessity for improved means of radiation shielding for future manned and unmanned missions. With a 1U CubeSat formfactor, ROSISat is a planned LEO mission that aims to characterize the radiation shielding capabilities of seven candidate materials. By comparing the shielding performance of each composite and constituent material, ROSISat will place a specific focus on correlating how molecular structure influences radiation shielding. Further, current simulations lack the fidelity to account for differences in molecular structure when analyzing shielding properties, thus emphasizing the necessity of in-situ testing. With one paired with each cell, nine SRAM computer memory modules will be embedded beneath the 3x3 aluminum material attachment plate, while onboard microcontrollers will monitor and quantify the bitflips occurring with each material. This will allow the radiation dose rate received by each module to be assessed for material comparison, providing greater understanding of how molecular structure influences the shielding capabilities of composite materials. The general space environment for various LEO orbits is being modeled using the Ansys STK software. Testing initiatives, including a future high-altitude balloon flight, will be conducted to verify subsystem designs and functionality. The ROSISat mission is projected to be flight-ready by 2028, with direct implications for future Earth-orbiting missions, including advancing the strength and reliability of shielding for EVA suits, manned craft, and long-term habitats.
