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US 2012/0067143 A1Published application
Miniature active standoff chamber
AssigneeRaytheon Company
InventorsEric J. GRIFFIN, Evan H. GRIFFIN
Life of this patent
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Abstract
One or more embodiments of a standoff chamber system configured to generate aerosolized clouds, useful in testing or calibrating standoff detectors in a laboratory environment, includes a chamber body having vertically recirculating vortices for generation of the clouds. The standoff chamber further includes a pair of aero-windows configured to surround a pair of apertures in the chamber body, filtering and preventing escape of the cloud, while allowing direct observation of the cloud by standoff detectors.
Claims12
A system for containing an aerosol comprising:
- a chamber for the aerosol having a pair of opposing apertures defining an unobstructed path extending through the chamber;
- a pair of internal flow generators positioned inside the chamber, each internal flow generator associated with one of the pair of opposing apertures, each internal flow generator configured to generate substantially vertical internal flows across the associated one of the pair of opposing apertures, inside the chamber;
- a filtering flow generator configured to generate filtering flows across each of the pair of opposing apertures, outside the chamber, substantially parallel to the internal flows;
- wherein the filtering flows are configured to entrain any of the aerosol that exits the containment chamber through the pair of opposing apertures;
- and
- wherein the filtering flows are filtered by one or more filters after flowing past the pair of opposing apertures.
3 more elements
A system for testing a standoff detector comprising:
- a chamber having a first aperture and a second aperture spaced to define an unobstructed path extending through the chamber, the chamber configured to generally contain an aerosol therein;
- a first internal flow generator associated with an interior side of the first aperture, configured to produce a first vortex of the aerosol in the chamber, the first vortex having a horizontal axis of revolution approximately perpendicular to the unobstructed path and including a first flow extending across at least a portion of the interior side of the first aperture;
- a second internal flow generator associated with an interior side of the second aperture, configured to produce a second vortex of the aerosol in the chamber, the second vortex having a horizontal axis of revolution perpendicular to the unobstructed path and including a second flow extending across at least a portion of the interior side of the second aperture;
- and
- an external flow generator configured to produce external flows, at least a portion of each of which extends across an exterior side of each of the first and second apertures, the external flows configured to capture any of the aerosol that escapes from the chamber through the first or second apertures, and direct said aerosol into one or more filters configured to filter the aerosol from the external flows;
- wherein the standoff detector is positioned to view the aerosol through the first and second apertures, so as to measure properties of the aerosol.
3 more elements
Dependencies are inferred from the claim text.