Radiation Hardness Assurance: Evolving for NewSpace

[摘要] During the past decade, government agencies, private companies and academic institutions, have launched hundreds of small satellites into space, with dramatically expanded dependence on advanced commercial-off-the-shelf (COTS) technologies and systems required for mission success. While the radiation effects vulnerabilities of components within small satellites are the same as those of their larger, traditional relatives, revised approaches are needed for risk management because of differences in technical requirements and programmatic resources. While moving to COTS components and systems may reduce direct costs and procurement lead times, it undermines many cost-reduction strategies used for conventional radiation hardness assurance (RHA). Limited resources are accompanied by a lack of radiation testing and analysis, which can pose significant risks. Small satellites have benefited from short mission durations in low Earth orbits with respect to their radiation response, but as mission objectives grow and become reliant on advanced technologies operating for longer and in harsher environments, requirements need to reflect the changing scope without hindering developers that provide new capabilities. In this course we suggest RHA strategies that engineers and scientists can apply to a wide range of aerospace systems, including constellations, with a focus on how to manage aggressive system scaling for smaller platforms.

[发布日期] 2019-09-16

[关键词] AEROSPACE SYSTEMS;COMMERCIAL OFF-THE-SHELF PRODUCTS;COST REDUCTION;FAILURE ANALYSIS;RADIATION EFFECTS;RADIATION HAZARDS;RISK ASSESSMENT;RISK MANAGEMENT;SATELLITE CONSTELLATIONS;SEMICONDUCTOR DEVICES;SINGLE EVENT UPSETS;SMALL SCIENTIFIC SATELLITES