Continuous Large-Area Micrometeoroid Flux Measuring Instrument

Physics

Scientific paper

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Scientific paper

The characterization of dust populations between 100 microns and 1 cm is a key component to improving our understanding of the ongoing physical processes of asteroids, comets, Kuiper Belt objects, planetary rings and planetary satellites. It is also critical for satellite impact risk assessments in the near Earth environment, and future explorations to the Moon, Mars, Jupiter, Saturn, etc. There is a lack of data in this critical size regime, with present in situ detection capability limited to particles 10 microns or smaller.The instrument described here is capable of continuously measuring the flux of orbital debris in the near Earth environment, and micrometeoroids present in interplanetary space or on planetary surfaces for future solar system exploration missions. It uses a fiber optic displacement sensor suite installed on the framework supporting the thin fabric film. This sensor suite monitors fabric motion generated by particle impacts, while also providing a record of fabric tension and integrity. Such an instrument is particularly well suited for use on large area structures, such as inflatable structures and solar sails (Fig. 1).

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