ISSN Online: 2688-7231
ISBN Online: 978-1-56700-524-0
Proceedings of the 26thNational and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 17-20, 2021, IIT Madras, Chennai-600036, Tamil Nadu, India
Thermal Control System for Magnetometer Boom Instrument (MBI)
The Magnetometer Boom Instrument aims at measuring the
magnetic field at the first Sun-Earth Lagrangian point (L1). It
will be flown on-board a space solar observatory which will
orbit around L1 point. The magnetic field measurements at the
L1 point aim at the detection of solar plasma waves and to
measure the low intensity vector magnetic field occurring due
to dynamic solar activity. This will lead to a better
understanding of the magnetic storms which pose a hazard to
orbiting satellites, telecommunication facilities, electric power grid and air traffic on polar routes.
To deliver specified functional performance, the
instrument must be maintained in the specified temperature
range - hence the need for Thermal Control System (TCS). A
completely passive TCS is evolved to ensure magnetic
cleanliness in the proximity of the sensor, thereby prohibiting
use of electric heaters and sensors. Thermal design makes use
of optically selective surfaces and conductive isolations from
boom. Thermal constraints are identified in terms of
instrument orientation with respect to the sun.
This paper highlights the TCS designed for this type of
instrument, by considering various parameters.