VO2-based switchable radiator for spacecraft thermal control
نویسندگان
چکیده
منابع مشابه
Fuzzy Sliding Mode for Spacecraft Formation Control in Eccentric Orbits
The problem of relative motion control for spacecraft formation flying in eccentric orbits is considered in this paper. Due to the presence of nonlinear dynamics and external disturbances, a robust fuzzy sliding mode controller is developed. The slopes of sliding surfaces of the conventional sliding mode controller are tuned according to error states using a fuzzy logic and reach the pre-define...
متن کاملDevelopment of spacecraft black thermal control coatings using the synthesized mesoporous Co3O4 pigment
The thermo-optical properties of coated surface are important for spacecraft thermal control coatings which depend on the optical properties and structure of the coating material. These coatings control the temperature by their capability of outer energy absorption and its emission. The optical properties of pigment can be improved if the pigment contains a high fraction of voids in its structu...
متن کاملEarth’s Magnetic Field for Spacecraft Attitude Control Applications (TECHNICAL NOTE)
In this paper the earth’s magnetic field is simulated precisely while the intensity and direction of the field are verified with one of the standard references for selected points on the earth and the results are compared with some low-order models. In another simulation, the complete model is compared with a common approximate model. The magnetic field in orbital frame is described and to empl...
متن کاملSwitchable Thermal Interfaces Based on Discrete Liquid Droplets
We present a switchable thermal interface based on an array of discrete liquid droplets initially confined on hydrophilic islands on a substrate. The droplets undergo reversible morphological transition into a continuous liquid film when they are mechanically compressed by an opposing substrate to create low-thermal resistance heat conduction path. We investigate a criterion for reversible swit...
متن کاملApproach for Sizing and Turndown Analysis of a Variable Geometry Spacecraft Radiator
Over the past few years, NASA has funded the development of several prototype radiator designs which use shape memory alloys to actuate cylindrical panels in response to changes in temperature. By adjusting each panel’s view to space, variable geometry radiators aim to improve the variable heat rejection capabilities of future manned vehicles in a consumable free manner. A system level radiator...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scientific Reports
سال: 2019
ISSN: 2045-2322
DOI: 10.1038/s41598-019-47572-z