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Small Business Innovation Research/Small Business Tech Transfer

Spacecraft Cabin Particulate Monitor, Phase II

Completed Technology Project

Project Introduction

Spacecraft Cabin Particulate Monitor, Phase II
We have built and tested an optical extinction monitor for the detection of spacecraft cabin particulates. This sensor sensitive to particle sizes ranging from a few nanometer to tens of micrometers in diameter. Designed to utilize commercial off- the-shelf components, the monitor, once calibrated, requires minimal recalibration and only periodic baseline determinations, a process which can be automated as part of the operation of the instrument. It employs no consumables. This monitor employs cavity attenuation phase shift technology and involves the use a light emitting diode coupled to a low-loss optical cavity. The Phase I project involved a proof-of-principle demonstration that demonstrated a sensitivity of less than 0.1 micrograms per cubic meter. During the Phase II project, a prototype sensor will be delivered to NASA for the purpose of laboratory and field measurements. A major goal will be to miniaturize the monitor. More »

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This is a historic project that was completed before the creation of TechPort on October 1, 2012. Available data has been included. This record may contain less data than currently active projects.