Attenuation of Scattered Thermal Energy Atomic Oxygen

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Attenuation of Scattered Thermal Energy Atomic Oxygen

Attenuation of Scattered Thermal Energy Atomic Oxygen

B. A. Banks / K. T. Seroka / J. B. McPhate / S. K. Miller

The attenuation of scattered thermal energy atomic oxygen is relevant to the potential damage that can occur within a spacecraft which sweeps through atomic oxygen in low Earth orbit (LEO). Although there can be significant oxidation and resulting degradation of polymers and some metals on the external surfaces of spacecraft, there are often openings on a spacecraft such as telescope apertures, vents, and microwave cavities that can allow atomic oxygen to enter and scatter internally to the spacecraft. Atomic oxygen that enters a spacecraft can thermally accommodate and scatter to ultimately react or recombine on surfaces. The atomic oxygen that does enter a spacecraft can be scavenged by use of high erosion yield polymers to reduce its reaction on critical surfaces and materials. Polyoxymethylene and polyethylene can be used as effective atomic oxygen scavenging polymers.

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Title :

Attenuation of Scattered Thermal Energy Atomic Oxygen

Contributors:

B. A. Banks (author) / K. T. Seroka (author) / J. B. McPhate (author) / S. K. Miller (author)

Publication date :

2011

Size :

9 pages

Type of media :

Report

Type of material :

No indication

Language :

English

Keywords :

Manned Spacecraft , Unmanned Spacecraft , Materials Degradation & Fouling , Plastics , Oxygen atoms , Polyethylenes , Thermal energy , Spacecraft construction materials , Damage , Degradation , Attenuation , Low earth orbits , Polymer chemistry , Scattering , Kapton(Trademark)

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