Browse Publications Technical Papers 2000-01-2277
2000-07-10

Design and Ground Test Results of a Variable Emittance Radiator 2000-01-2277

The Smart Radiation Device (SRD) which is made from a ceramic material is a thin and light tile. The material undergoes a metal-insulator transition at around 290K and this allows the infrared emissivity of the device to change from low to high as the temperature is increased from 175K to 375K. This is beneficial for thermal control applications on spacecraft. For example, bonded only to the external surface of the spacecraft's instruments, SRD controls the heat radiated to deep space without electrical instruments or mechanical parts used for changing emissivity. It reduces the energy consumption of the electrical heater for thermal control, and decreases the weight and the cost of the thermal control system.
In this paper, the design of the new material for SRD and the ground test results such as the radiation tests of electrons and UV will be described.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Current Mechanically Pumped Two-Phase Thermal Control Loop Developments

2004-01-2507

View Details

TECHNICAL PAPER

Selection of an Alternate Biocide for the International Space Station Internal Active Thermal Control System Coolant Loops

2003-01-2568

View Details

TECHNICAL PAPER

Selection of an Alternate Biocide for the ISS Internal Thermal Control System Coolant - Phase II

2004-01-2472

View Details

X