Determination of Magnetic Effect of the 600°C Hot Plate Setup for Testing the Heat Shield of Solar-Orbiter

Abstract

A new test facility was designed and built in order to heat up the Solar Orbiter Heat-Shield to 560° Celsius in vacuum conditions. A heated plate of steal with the dimension of 3m x 2.4m was used as a heat source. This heated plate was heated by radiated heat flux of a heating system with seven heating circles consisted of nine heating coils running. The electric current was up to 300A RMS at a voltage up to 60V at the power grid frequency of 50Hz in vacuum conditions. In order to ensure the magnetic requirements of Solar Orbiter it was indicated that no piece of flight hardware shall be exposed to magnetic fields higher than $200\ \mu\mathrm{T}$. The decision was taken to monitor the process of development with respect to magnetic cleanliness. The overall magnetic design/modelling process is presented as well as the verification steps performed on the real 600°C Hot Plate Setup.