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In spacecraft design, a Sun shield restricts or reduces heat caused by sunlight hitting a spacecraft. [6] An example of use of a thermal shield is on the Infrared Space Observatory . [ 6 ] The ISO sunshield helped protect the cryostat from sunlight, and it was also covered with solar panels.
Heat pipes must be tuned to particular cooling conditions. The choice of pipe material, size, and coolant all have an effect on the optimal temperatures at which heat pipes work. When used outside of its design heat range, the heat pipe's thermal conductivity is effectively reduced to the heat conduction properties of its solid metal casing alone.
A long term objective is the design of a system of heat pipes containing fluids of low toxicity more efficient than an active system that is currently used on the ISS. It is not only space that benefits from research conducted on heat pipes: thanks to ARTE two patents were filed for technologies used on Earth and they have started new heat ...
Such space systems require advanced high-temperature thermal control systems. Liquid metal heat pipes with conventional radiators are considered ideally suited for such applications. [5] However, the required radiator surface area is huge, hence, the system mass is very large. The liquid droplet radiator (LDR) has an advantage in terms of the ...
Multi-layer insulation (MLI) is thermal insulation composed of multiple layers of thin sheets and is often used on spacecraft and cryogenics. Also referred to as superinsulation, [1] MLI is one of the main items of the spacecraft thermal design, primarily intended to reduce heat loss by thermal radiation.
The International Space Station (ISS) External Active Thermal Control System (EATCS) [1] maintains an equilibrium when the ISS environment or heat loads exceed the capabilities of the Passive Thermal Control System (PTCS). Note Elements of the PTCS are external surface materials, insulation such as Multi-Layer Insulation (MLI), or Heat Pipes.
A loop heat pipe (LHP) is a two-phase heat transfer device that uses capillary action to remove heat from a source and passively move it to a condenser or radiator. LHPs are similar to heat pipes but have the advantage of being able to provide reliable operation over long distance and the ability to operate against gravity .
The Space Shuttle thermal protection system (TPS) is the barrier that protected the Space Shuttle Orbiter during the extreme 1,650 °C (3,000 °F) heat of atmospheric reentry. A secondary goal was to protect from the heat and cold of space while in orbit.