Controlling and mitigating spacecraft charging effects requires prudent design, test, and verification measures to related to material surface properties when exposed to a variety of operational and ...environmental conditions. In this paper we use two targeted sensors to characterize the surface charging environment and threat of surface / differential charging for June to October 2010. Surface potential measurements and ~4 keV to ~40 keV electron flux measurements are utilized to investigate the timescale of charging events, study complementary results amongst sensors on nearby spacecraft, and develop a process for near-real time charging threat assessment aboard host spacecraft. Findings are relevant for assessments of space system impacts resulting from surface discharges and ESD, simulations of surface charging, and laboratory testing of flight systems designs.
High energy heavy ion testing of LM139 and AD9042 performed at NASA Space Radiation Laboratory offers new insight into device SEE response in the space environment.
Challenges associated with the design, testing, and qualification of space solar arrays for operation in plasma environments have led to the creation of collection of ground test and design ...guidelines, standards, and requirements. Discussions summarized herein examine unique design aspects affecting array performance in plasma environments and review test / analysis routines appropriate for typical space solar array production methods.
Total dose tests of common devices reveal unexpected dose rate sensitivity. Devices from the same vendor procured to SMD versus military specifications exhibit substantially different dose rate ...effects. Behavior and critical parameters are compared and discussed.
