Performance Results of the ESR from the Space Technology 5 Satellites

Energy Harvesting and Thermal Management System in Aerospace

“…The electrostatic switch radiator controls the gap between the high emissivity thin-film surface and the low emissivity substrate surface through electrostatic force in vacuum, and then adjusts the emissivity change (Moghaddam et al, 2007). NASA conducted flight experiments on electrostatic switched radiators, and the results showed that the difference between the maximum and minimum emissivity was as high as 0.7 (Biter et al, 2002;Biter and Oh, 2007). Hyun (Kim et al, 2017) designed a miniature electric bead electrostatic switch radiator.…”

Performance Analysis of an Electrostatic Switched Radiator Using Heat-Flux-Based Emissivity Measurement

“…The differences between the firstand second-generation ESRs are in the insulator and the membrane. In the first-generation ESR, the insulator function was built into the membrane, which was a polyimide film (insulator) metallized on the top surface (electrode), then painted with a high-emissivity paint [12]. In the secondgeneration ESR, the insulator function was shifted to the base and the metallized layer was on the bottom surface of the membrane, so that the electric field was no longer across the membrane.…”

“…Recent development of the heat-flux-based (HFB) emissivity measurement technique [10,11] has provided an opportunity to accurately characterize and enhance the ESR technology. As mentioned in [12], a second generation ESR device is expected to be flown as part of the sixth Materials International Space Station Experiment (MISSE-6) which is scheduled to be installed by a space shuttle crew on the exterior of the International Space Station in 2008. ATEC, Inc. and Sensortex, Inc. have been working together over the past two years on preparation of the MISSE-6 flight module and on advancing the ESR technology.…”

Near-field radiation assisted smart skin for spacecraft thermal control

“…One efficient solution is to tune the heat rejection into space using a tunable-emittance "skin" coated on the spacecraft radiator, in response to the variation of internal and external thermal conditions [6,8]. According to working principle, the tunableemittance approaches under study can be classified into three categories, i.e., mechanical radiators [6,[9][10][11][12], thermochromic devices [13][14][15][16][17][18][19][20] and electrochromic devices [2,3,5,[21][22][23][24][25]. The mechanical radiators adjust the shape of emitting surface by electrical (louvers) or thermal (smart surfaces) means, thus tuning radiative characteristics of the controlled surfaces.…”

“…This motivates us to explore new ways of designing thermal control skin. [6,[9][10][11][12] rapid and active tuning; large-range tunable mobile parts; high-powerconsuming 0.74 (Exp.) [9] Smart surfaces [26][27][28] all-solid-state; self-adaptive tuning; large-range tunable only working in passive mode 0.80 (Theory) [26] Electrochromic Inorganic material [2,21,22] active tuning; large-range tunable tunable only between two states ("colored" or "bleached") 0.71 (Exp.)…”