Airbus DS has been developing modular flexible radiator solutions through the use of laminated pyrolytic graphite material. These High Perfromance Radiators (HiPeR) are designed for ultra-lightweight thermal control and are scalable from nanoscale spacecraft (1U CubeSats) up to kilowatt level geosynchronous platforms.
HiPeR radiators are extremely versatile and can be used as a low mass replacement to existing radiators for backwards compatibility. Radiators can be made deployable, both with passive and with active means of deployment. For example, such radiators can be folded under stowed solar arrays and held in place by the already existing snubbers.
Radiative performance can be controlled during a mission through both geometric control and heat flow control. This eliminates the need for additional louvre-type systems. Alternatively, integration of dual purpose hinge systems and radiator surfaces to heat sinks is possible, with little impact on thermal efficiency because there is no loss through interfacing or moveable parts.
HiPeR technology can be used in combination with heat pumps to provide end-to-end thermal solutions for dissipating payloads. Some of these combinations of functionality have already been demonstrated in breadboard testing.
A summary of the state of the art of HiPeR radiators will be shown along with parametric studies demonstrating its scalability and associated mass performance efficiencies. Passive deployable systems using HiPeR can achieve up to 100W/Kg.